ИНГАЛЯТОР

Группа изобретений относится к медицинской технике. Ингалятор, содержащий корпус и картридж, при этом картридж содержит отсек для хранения доз и воздушный канал. Отсек для хранения доз подходит для содержания множества доз вдыхаемого медикамента, при этом воздушный канал содержит мундштук на его конце, устройство ингалятора сконфигурировано и сконструировано так, что доза вдыхаемого медикамента из отсека для хранения доз может быть доступна и расположена в конфигурации выдачи для выдачи пользователю через воздушный канал во время вдоха пользователем через мундштук, при этом картридж прикреплен к корпусу с возможностью высвобождения. 2 н. и 14 з.п. ф-лы, 8 ил.

СПОСОБ ВЫЯВЛЕНИЯ ОРДС И СИСТЕМЫ ДЛЯ ВЫЯВЛЕНИЯ ОРДС

СИСТЕМА И СПОСОБ ДЛЯ ВЫДАЧИ СУБЪЕКТУ УКАЗАНИЙ НА ИЗМЕНЕНИЕ ОДНОГО ИЛИ БОЛЕЕ ПАРАМЕТРОВ ДЫХАНИЯ

... 1. Система, сконфигурированная для выдачи субъекту указания на сознательное изменение одного или более параметров дыхания, при этом система включает в себя:устройство, сконфигурированное для создания потока пригодного для дыхания газа под давлением для доставки в дыхательные пути субъекта;интерфейс пользователя, сконфигурированный для передачи субъекту информации, относящейся к функционированию устройства и/или потоку пригодного для дыхания газа под давлением;процессор, сконфигурированный (i) для управления устройством таким образом, что устройство настраивает один или более параметров газа для газа в потоке пригодного для дыхания газа под давлением для выдачи субъекту контрольных сигналов дыхания, которые выдают субъекту указание на сознательное изменение одного или более параметров вдоха и выдоха, и (ii) для управления интерфейсом пользователя таким образом, что интерфейс пользователя выдает субъекту информацию, относящуюся к значению контрольных сигналов дыхания, выдаваемых субъекту ...

System zur Bereitstellung eines Gases für die Beatmung eines Patienten

System (10) zur Bereitstellung eines Gases für die Beatmung eines Patienten (P), umfassend eine Gasquelle (12) zur Lieferung eines Gases mit Niederdruck, eine an die Gasquelle (12) angeschlossene Ventilanordnung (14) mit zumindest einem Proportionalventil (16, 17, 18), wobei ein Auslass (20) der Ventilanordnung (14) mit einer Leitungsanordnung (22) einer Beatmungsvorrichtung (24), die eine Inspirationsleitung (26) und eine Exspirationsleitung (28) aufweist, zumindest pneumatisch koppelbar ist, ein Auslassventil (30), durch das eine Exspirationsströmung beeinflussbar ist, eine mit der Ventilanordnung (14) steuerungstechnisch verbundene Steuereinrichtung (32), durch die die Schaltstellung des zumindest einen Proportionalventils (16, 17, 18) in der Ventilanordnung (14) einstellbar ist, und eine erste Messeinrichtung (34), die stromabwärts der Ventilanordnung (14) vorgesehen ist, um zumindest den Druck und/oder den Volumenstrom des aus dem Auslass (20) der Ventilanordnung (14) in Richtung der ...

Hygenic condition determining method for e.g. cable-bound patient near breath stream sensor, involves comparing temperature events with comparison values, so that indication, output and/or alarm are caused during exceedence of values

The method involves storing temperature events of an additional part (1) e.g. cable-bound patient near breath stream sensor, corresponding to a temperature exceedence of a given temperature with the corresponding times. The stored temperature events with the corresponding times are compared with comparison values for temperature and time, so that an indication, output and/or an alarm at a medical basic equipment (3) e.g. anaesthesia equipment, are caused during exceedence of the comparsion value of the temperature for a given total time or for a given number of the temperature events. An independent claim is also included for a device for executing a method for determining a hygenic condition of an additional part.

Deterministically controlled humidification system

A respiratory humidification system for providing heated and humidified respiratory gases to a patient comprising a liquid flow controller 110 providing a controlled flow of a liquid and a heating system including a heating surface 114 configured to receive the controlled flow of liquid. The system comprises one or more temperature sensors measuring a surface temperature of the heating surface and one or more liquid sensors 117 configured to detect whether the heating surface is wetted in at least one region. The system comprises one or more hardware processors providing deterministic control of a humidity level of gases passing through the system by instructing the liquid flow controller to adjust the controlled flow of liquid received at the heating system and instructing the heating system to adjust the surface temperature of the heating surface. Adjusting the surface temperature of the heating surface provides control to produce a known evaporative area. A heater plate is also provided ...

Zone heating for respiratory circuits

Some embodiments provide for an inspiratory limb for a breathing circuit that includes a first segment that comprises a first heater wire circuit and a second segment that comprises a second heater wire circuit The inspiratory limb can include an intermediate connector that includes a connection circuit that electrically couples the first heater wire circuit to the second heater wire circuit The inspiratory limb can be configured to operate in two modes wherein, in a first mode, electrical power passes through the first electrical connection to provide power to the first beater wire circuit without providing power to the second heater wire circuit, and in a second mode, electrical power pass through the first electrical connection to provide power to both the first heater wire circuit and the second heater wire circuit.

A user interface and system for supplying gases to an airway

Sensing for respiratory circuits

Some embodiments provide a breathing assistance apparatus comprising a conduit for conveying gases therein, the conduit comprising circuitry. The circuitry may comprise at least one heater wire part to heat gases in the conduit, in use, and at least one sensor wire part comprising at least one sensor for monitoring a parameter of the gases in the conduit. There is also provided a controller to control provision of AC power or AC voltage to the heater wire part; and control selective reading of the sensor. The controller may be configured to read the sensor at or about a particular portion of the AC power waveform provided to the heater wire part.

Humidifier

There is provided a humidifier for a respiratory therapy system that includes a humidification chamber having an inner wall spaced from an outer wall to forma wall cavity between the inner and outer walls. A gas flow path is located within the wall cavity. Gas, such as air, flows along the gas flow path from an inlet to the humidification chamber to an outlet of the humidification chamber. Optionally, the gas flow path may follow a helical route through the wall cavity.

HUMIDIFICATION SYSTEM

HUMIDIFICATION SYSTEM A humidification system can include a heater base, a chamber, and a breathing circuit. The heater base includes a heater plate positioned in a recessed region, and a heat conductive portion of the chamber is configured to contact the heater plate. The heater base includes a guard configured to control movement of the chamber into and out of the recessed region. The guard includes an anti-racking mechanism. The chamber includes an inlet port, an outlet port. A downward extension extends into the chamber from the inlet port, and a baffle is disposed at a lower end of the downward extension. A component of the breathing circuit can include a conduit hanging end cap for shipping and storage. The end cap can include a hanging component to allow the breathing circuit component to be hung from a medical stand. The system can detect when breathing circuits are connected in reverse.

Pressure safety device for bag valve mask

A pressure safety device is used with a bag valve mask (BVM) for preventing over-pressurization. The BVM includes a bag assembly having a bag connector for detachably mating to a mask connector on a patient mask. The pressure safety device has a housing with a bag port, a mask fitting, and a flow path from the bag port to the mask fitting. The bag port detachably connects to the bag connector on the BVM, and the mask fitting detachably connects to the mask connector on the BVM. The pressure safety device includes an automatic flow reduction valve located on the flow path in the housing and impedes flow when pressure on a bag connector side of the valve exceeds a maximum threshold value.

Methods and Apparatus for the Systemic Control of Ventilatory Support in the Presence of Respiratory Insufficiency

Breathing assistance apparatus

Breathing assistance apparatus includes a gases supply unit adapted to, in use, deliver a stream of pressurised gases from an outlet. The gases supply unit is adapted to vary the pressure of the stream of pressurised gases. A supply path includes a flexible self-supporting gases transportation pathway having a first end connected to the outlet so that the gases transportation pathway receives the stream of gases and conveys the gases to a patient. A patient interface is connected to the second end of the gases transportation pathway receives a stream of gases. At least one sensor measures at least one information parameter of the supply path. A control system associated with the gases supply unit receives the information parameter. The control system contains reference data, and compares the received data to reference data, and determines a supply path based on the comparison.

Synthesis of nitric oxide gas for inhalation

In some additional aspects, an apparatus can include a chamber having an inlet valve for receiving a reactant gas and an outlet valve for delivering a product gas, a piston positioned inside the chamber and configured to move along a length of the chamber for adjusting pressure in the chamber, a sensor for collecting information related to one or more conditions of a respiratory system associated with a patient, a controller for determining one or more control parameters based on the collected information, and one or more pairs of electrodes positioned inside the chamber for initiating a series of electric arcs external to the patient to generate nitric oxide based on the determined control parameters.

Oxygen concentrator systems and methods

Described herein are various embodiments of an oxygen concentrator system. In some embodiments, oxygen concentrator system includes one or more components that improve energy usage during operation of the oxygen concentrator system.

Ventilation mask

A nasal ventilation mask having one or more attachment ports located adjacent to and overlying an upper lip of a patient when worn.

Breathing control using high flow respiration assistance

High flow therapy is used to treat Cheyne-Stokes respiration and other types of periodic respiration disorders by periodic application of high flow therapy, adjustment of high flow therapy flow rates and/or periodic additions of CO2 or O2 into the air flow provided to the patient.

Zone heating for respiratory circuits

Some embodiments provide for an inspiratory limb for a breathing circuit that includes a first segment that comprises a first heater wire circuit and a second segment that comprises a second heater wire circuit. The inspiratory limb can include an intermediate connector that includes a connection circuit that electrically couples the first heater wire circuit to the second heater wire circuit. The inspiratory limb can be configured to operate in two modes wherein, in a first mode, electrical power passes through the first electrical connection to provide power to the first heater wire circuit without providing power to the second heater wire circuit, and in a second mode, electrical power pass through the first electrical connection to provide power to both the first heater wire circuit and the second heater wire circuit.

Respiratory care apparatus

Described herein is a respiratory care apparatus capable of performing multitude of therapy for secretion management and breath assistance therapy. The respiratory care apparatus comprises an electromechanical air router assembly (EARA) and an interfacing assembly. The EARA includes independent first and second pressure generating sources for assisted inhalation/insufflation and assisted exhalation/exsufflation process. The interfacing assembly includes a patient interface port and a patient interface tube. The interfacing assembly forms two pneumatically separate paths. The respiratory care apparatus is configured to generate alternate positive and negative pressure at the patient interface port for assisted inhalation/insufflation and assisted exhalation/exsufflation processes respectively. The assisted inhalation/insufflation and assisted exhalation/exsufflation processes are carried out independently through separate conduits/passages to reduce contamination and infection. Further, ...

AUTOMATIC CONTROL SYSTEM FOR MECHANICAL VENTILATION FOR ACTIVE OR PASSIVE SUBJECTS

A method and an apparatus for controlling a ventilator to automatically adjust ventilation assistance to an active or passive subject. The method includes determining volume and flow rate of gas to the patient during inspiration on an ongoing basis, and generating control signals in proportion to the volume and flow rate of gas to the patient wherein proportionality factors, and support levels for the elastic and resistive components of pressure are automatically adjusted by the ventilator. The ongoing pressure applied by the ventilator is a sum of elastic and resistive pressures that are automatically controlled by the system. When the patient breathes spontaneously, the support levels are automatically adjusted based on the patient's requirements. If the patient does not breathe spontaneously, the ventilator provides ventilation at an optimal level and rate. The method may be used in weaning or in a management phase of ventilation.

FUNCTIONAL CONTROL AND AGE VERIFICATION OF ELECTRONIC DEVICES THROUGH VISUAL COMMUNICATION

An aerosol delivery or electronic nicotine delivery systems ("ENDS") device may include smoking articles that produce aerosol. The device may operate upon authentication. The authentication may first include an age verification before an authentication allows for operation of the device. The authentication may include a control signal communication to the device. The control signal communication may include an audio signal, such as an authentication tone that is detected by a microphone or pressure sensor on the device. The control signal communication may include a visual, optical, or light signal that is detected by a light sensor or photodiode on the device.

PRESSURE SAFETY DEVICE FOR BAG VALVE MASK

A pressure safety device is used with a bag valve mask (BVM) for preventing over-pressurization. The BVM includes a bag assembly having a bag connector for detachably mating to a mask connector on a patient mask. The pressure safety device has a housing with a bag port, a mask fitting, and a flow path from the bag port to the mask fitting. The bag port detachably connects to the bag connector on the BVM, and the mask fitting detachably connects to the mask connector on the BVM. The pressure safety device includes an automatic flow reduction valve located on the flow path in the housing and impedes flow when pressure on a bag connector side of the valve exceeds a maximum threshold value.

AN ELECTRO-MECHANICAL RESUSCITATING APPARATUS

The present invention is a mechanical ventilation device which delivers intermittent positive pressure ventilation by compressing AMBU. As the device uses existing AMBU for the ventilation, it is intended to automate the process of hand ventilation and will hence keep the costs and skill requirement low. Due to usage of the AMBU and simple mechanics, it is easy to manufacture and maintain the device.

RESPIRATORY HUMIDIFICATION DEVICE

A respiratory humidification device includes: a casing; a separator wall to divide an interior space into filling and humidification chambers, wherein a bottom edge of the separator wall leaves a space between it and the casing bottom to define a passage allowing water to flow atop the casing bottom between the chambers, and enabling the water level to rise enough to block the passage to prevent respiratory gas from passing therethrough; a valve and float within the filling chamber to control water flow into the filling chamber to prevent the water level from rising higher than a threshold; and wherein an outer wall of the casing and the separator wall cooperate with the water surface within the humidification chamber to define an elongate tube-like pathway through which respiratory gas proceeds along a path extending generally parallel to the water surface within the humidification chamber to be humidified.

APPARATUS FOR USE IN A RESPIRATORY SUPPORT SYSTEM

This invention relates to a connector for a component of a medical breathing circuit. The connector comprises an inner body and an outer body. The inner body and the outer body being separate components. The inner body having a retention mechanism configured to engage another connector, and an outer body configured to at least partly surround the inner body, the outer body having a tube engagement mechanism.

METHODS AND SYSTEMS FOR DRIVE PRESSURE SPONTANEOUS VENTILATION

This disclosure describes systems and methods for providing drive pressure ventilation of a patient. The disclosure describes a novel breath type that provides a spontaneous breath type that allows for the calculation of drive pressure that does not require invasive monitoring.

INSPIRATORY SYNTHESIS OF NITRIC OXIDE

SYSTEM AND METHOD FOR COOLING THE BRAIN OF A HUMAN SUBJECT

A system for cooling the brain of a human subject* the system including a cooling subsystem configured to input a flow of air or breathable gas, cool the air or breathable gas, and output cooled air or breathable gas to a line coupled to a device adapted to deliver the cooled air or breathable gas to a human subject. A flow control device coupled to the cooling subsystem is configured to control a flow rate of the flow of the air or breathable gas input to the cooling subsystem and a flow rate of the cooled air or breathable gas output to the line. One or more How rate sensors coupled to the cooling subsystem are configured to measure at least a flow rate of flow of cooled air or breathable gas. One or more temperature sensors are configured to measure at least a temperature of a brain or a brain correlative site of the human subject and the temperature of the flow of cooled air or breathable gas. A controller is coupled to the cooling subsystem, the flow control device, the one or more ...

RESPIRATORY ASSISTANCE APPARATUS

A head-mounted respiratory assistance apparatus configured to provide a respiratory gases stream to a user. The head-mounted respiratory assistance has a main body securable to the head of a user and a blower unit that is operable to generate a pressurised gases stream from a supply of gases from the surrounding atmosphere. A patient interface is provided on the main body that has a gases inlet which is fluidly connected to the blower unit and which is configured to deliver the pressurised gases to the user's nose and/or mouth.

SYSTEMS AND METHODS FOR EX VIVO ORGAN CARE

The invention. in various embodiments, provides systems, methods and solutions for perfusing an organ ex vivo.

CONDUIT CONNECTOR FOR A PATIENT BREATHING DEVICE

In an embodiment, a connector or connector assembly for attaching a nasal cannula with a gas delivery hose includes a sensor port for a sensor probe positioned near an end of a nasal cannula, which can allow the sensor probe to be placed closer to the patient's nostrils than previous connector parts allowed. In an embodiment, the connector is configured to advantageously allow the nasal cannula to rotate relative to the gas delivery hose, thereby allowing a patient or healthcare provider to untangle or otherwise straighten the hose or the cannula. In an embodiment, the connector assembly is configured to automatically align locking protrusions on a first component with locking recesses on a second component, where insertion of the second component within the first component causes the second component to rotate relative to the first component, thereby aligning the locking protrusions with associated locking recesses.

A METHOD FOR ESTIMATING LEAKS FROM VENTILATOR CIRCUITS

Gas leakage from a ventilator circuit and patient interface is estimated by a method that relies on breath-by-breath or time-to-time variability in the pattern of pressure delivery by the ventilator, comprising generating signals that correspond to pressure (PCIRCUIT) and flow rate (Flow) in the ventilator circuit, integrating flow (Integrated Flow), measuring the change in Integrated Flow (?V) over an INTERVAL extending from a selected point in the expiratory phase of a ventilator cycle to a selected point during the expiratory phase of a nearby ventilator cycle, repeating the measurement of ?V for at least two said INTERVALS, processing PCIRCUIT to produce an index or indices that reflect(s) the pattern of pressure delivery by the ventilator during each of said INTERVALS, applying statistical methods to determine the relation between the differences in ?V among INTERVALS and the corresponding differences in said index or indices of PCIRCUIT, and establishing from said relation the leak ...

ADAPTIVE TEMPERATURE SENSOR FOR BREATH MONITORING DEVICE

A system and method for sleep monitoring, diagnosing and sensing temperature and pressure for a breathing cycle of a patient including a sensing device suitable for both nasal and oral breath monitoring for measuring respiratory air wave and airflow information during sleep apnea diagnostic session and processing the acquired air wave and airflow breathing information for input to conventional polysomnography equipment.

ADAPTIVE TEMPERATURE SENSOR FOR BREATH MONITORING DEVICE

A system and method for sleep monitoring, diagnosing and sensing temperature and pressure for a breathing cycle of a patient including a sensing device suitable for both nasal and oral breath monitoring for measuring respiratory air wave and airflow information during sleep apnea diagnostic session and processing the acquired air wave and airflow breathing information for input to conventional polysomnography equipment.

DEVICE FOR DELIVERING HYDROGEN TO A SUBJECT

There is provided herein devices for delivering hydrogen to a subject comprising a flow path including a breather bag and an inhalation outlet for engagement with the subject respiratory system; and a breathing gas supply source comprising hydrogen gas and in fluid communication with the flow path. Also provided are devices for the cutaneous delivery of hydrogen.

Ventilator and method for controlling ventilator.

Die Erfindung betrifft ein Beatmungsgerät (15), das mit einer Sensorik (30) sowie mit einer Steuerung (24) verbunden ist, wobei die Sensorik (30) zur Erfassung von zumindest zwei Messdaten (31) sowie zum Übertragen der erfassten Messdaten (31) an das Beatmungsgerät (15) oder das Steuerlogikmodul (25) ausgebildet ist. Weiters ist die Steuerung (24) mit zumindest einer Anzeigeeinrichtung (35) verbunden, wobei die zumindest eine Anzeigeeinrichtung (35) einen konfiguralen Bildschirm (33) umfasst. Die Steuerung (24) ist zur Bereitstellung von Anzeigedaten (62, 65) auf Basis der erfassten Messdaten (31) ausgebildet, welche auf einer ersten Grafikeinheit (29) auf der zumindest einen Anzeigeeinrichtung (35) einblendbar sind. Darüber hinaus betrifft die Erfindung ein Verfahren zum Steuern eines Beatmungsgeräts (15).

METHOD AND SYSTEM OF CALIBRATION OF GAS FLOW USING FLOW RATE SENSOR ON APPARATUS FOR INHALATION ANESTHESIA

USE OF INHALED NITROGEN OXIDE (OF II) FOR TREATMENT OF PULMONARY HYPERTENSION, PULMONARY DISEASE CONNECTED WITH

Method and apparatus for monitoring and controlling pressure support device

A system is configured to generate a pressurized flow of gas comprised of a first gas having a partial pressure that varies in a predetermined manner. This may be used, for example, to simulate a previous and/or theoretical respiratory gas flow that was produced (or could have been produced) by a subject. The system is configured to deliver the pressurized flow of gas to a testing system configured to measure the partial pressure the first gas in flows of gas. This may provide an opportunity to determine the response of individual testing systems to various clinical circumstances.

VENTILATOR WITH MONITORING AN ABSENCE OF CONTRACTIONS THORACIC

L'invention porte sur un appareil d'assistance respiratoire (1) apte à délivrer un flux de gaz à un patient (P) comprenant un conduit d'acheminement de gaz (2) pour acheminer un flux de gaz ; des moyens de mesure (6) conçus pour mesurer au moins un paramètre représentatif du flux de gaz et fournir au moins un signal correspondant audit moins un paramètre représentatif dudit flux de gaz; des moyens de traitement de signal (8) conçus pour traiter ledit au moins un signal provenant des moyens de mesure (6) et déduire dudit signal au moins une information relative à une réalisation et/ou à un arrêt de réalisation de contractions thoraciques (CT); des moyens de comptage configurés pour comptabiliser au moins une durée d'arrêt ou d'absence de contractions thoraciques (tNCT) pendant laquelle au moins une information relative à un arrêt ou une absence de contractions thoraciques (CT) est déterminée par les moyens de traitement de signal (8); et des moyens de mémorisation (12) conçus pour enregistrer ...

VENTILATION APPARATUS FOR CARDIOPULMONARY RESUSCITATION WITH DISPLAY OF THE TRENDED CO2

CONNECTION CONDUIT FOR A RESPIRATORY DEVICE PATIENT

DELIVERING VARIABLE POSITIVE AIRWAY PRESSURE DEPENDING ON AWAKE STATE AND SLEEP DISORDERED BREATHING

호흡 가스 흐름 측정에서의 중단들에 대한 보상

... 본 발명은 전반적으로 호흡 가스 흐름 측정이 이용할 수 없거나 또는 신뢰할 수 없을 때와 같이 호흡 가스 흐름 측정에 중단을 보상하기 위한 기술들을 이용하여 환자에게 치료용 가스를 전달하는 시스템들 및 방법들에 관한 것이다. 이런 기술들은 이력 호흡 가스 유량 데이터, 예컨대 움직이는 평균 유량들, 움직이는 중간 유량들 및/또는 흐름 파형들을 이용하는 것을 포함한다. 이들 기술들 중 적어도 일부는 치료용 가스 전달의 중단이 최소화되거나 또는 배제되는 것을 보장할 수 있다.

método e dispositivo respiratório de pressão de ar negativa, sistema que compreende o dito dispositivo, método de tratar apneia do sono, bem como uso do dispositivo ou sistema

Inhalation device for use in aerosol therapy

A HUMIDIFIER RESERVOIR

A reservoir configured to retain a volume of liquid for use in an apparatus for humidifying a flow of pressurised air comprises a base portion and a lid portion. The reservoir may be configured to improve its level of thermal contact to the heater plate using the flow of pressurised air. The reservoir may be configured to improve thermal contact between the reservoir and the heater plate by pre-compression upon engagement of the reservoir with the humidifier. The reservoir may comprise a removable intermediate portion, which may include the inlet tube and/or the outlet tube, for improved access for cleaning. The reservoir may also be configured to prevent overfilling. Overfill prevention features in the reservoir may include defined flow egress paths and/or formation of air locks.

VENT ARRANGEMENT FOR RESPIRATORY DEVICE

A vent arrangement for a respiratory pressure therapy device may include one or a plurality of vents configured with a variable aperture for communicating a flow of breathable gas. The vent arrangement may be configured with a cross section profile exposed to the flow of breathable gas communicating through the vent that does not change as the aperture size changes. A vent arrangement may include a plurality of the vents and the aperture size of each vent may be controlled independently or together, and may be controlled according to one or more input signals from one or more sensors. Examples of suitable input signals include flow, pressure, noise, accelerometer outputs, orientation of a patient or presence of any obstructions. A patient interface or an air circuit may include the vent arrangement, or the vent arrangement may be configured to connect with a patient interface or an air circuit.

SYSTEM, DEVICE AND PROCESS FOR REMOTELY CONTROLLING A MEDICAL DEVICE

A system for controlling medical devices, wherein this system can comprise a device having at least one wireless or cellular based communication module. The module can be in the form of a GPRS module associated with a SIM card, or a CDMA module. The SEvI card can be adapted such that it contains additional memory for storing a program for controlling the device or the system. Multiple cellular communication modules can also be installed in this system. Additional communication modules such as wireless modules including but not limited to Bluetooth, IRDA, RF, or any other wireless module can also be incorporated into the system. Wired modules can also be used, for example these wired modules can be RS- 232 modules, USB, Serial adapters, phone and fax modem. Other modules can include audio modules such as speaker and microphone jacks, and video modules such as a camera for processing video readings. All of these components can be installed on a first side of a motherboard, which is disposed ...

APPARATUS FOR VENTILATING A PATIENT

Oxygen and pressurized air are fed to the adjustable mixing valve device (5), which allows for setting the desired oxygen content in the supply duct (6). The volume flow in the supply duct (6) is controlled using an adjustable valve device (8). The binary gatekeeper valve (10a) is controlled for intermittent supply of pressurized gas to the main inlet (12) of the venturi (11). In order to achieve decelerating flow profiles, a proportional valve (10b) is used. From the outlet (14) of the venturi (11), the inspiration gas is fed to the patient port (16). An injection duct (19) bypassing the venturi (11) is provided for intermittent injection of oxygen from the cylinder (1) to the patient port (16). The injection valve (20) allows controlled injection of oxygen during an initial phase of the inspiration phase. Through the recirculation duct (22) exhaled gas is fed to the side inlet (13) of the venturi (11) for recirculating. An absober unit (23) reduces the concentration of carbon-dioxide ...

RESPIRATORY GAS FLOW SENSOR WITH SAMPLING PORT

The accurate measurement of inspired and expired gas volume flow and gas composition are important in respiratory therapy. Combining the two measurement functions often results in excessive deadspace and/or in the two measurement systems adversely affecting each other. The invention provides a gas flow sensor (19) for a ventilator comprising: a flow path (22) extending between a first end that connects to a supply of gas and a second end that couples to a patient airway interface; and a constant temperature anemometer sensor (23) arranged within the flow path between those ends. It further comprises a sampling port (5) that may be coupled to a gas analyser device; and an orifice (24) which is in fluid communication with the flow path and the sampling port so that in use gas may be drawn from the flow path (22) for analysis, the gas being drawn from the flow path at a position located between the anemometer sensor and the first end.

Electrodes for nitric oxide generation

Systems and methods for nitric oxide (NO) generation systems are provided. In some embodiments, an NO generation system comprises at least one pair of electrodes configured to generate a product gas containing NO from a flow of a reactant gas. The electrodes have elongated surfaces such that a plasma produced is carried by the flow of the reactant gas and glides along the elongated surfaces from a first end towards a second end of the electrode pair. A controller is configured to regulate the amount of NO in the product gas by the at least one pair of electrodes using one or more parameters as an input to the controller. The one or more parameters include information from a plurality of sensors configured to collect information relating to at least one of the reactant gas, the product gas, and a medical gas into which the product gas flows.

Determination of leak and respiratory airflow

Methods and apparatus for determining leak and respiratory airflow are disclosed. A pressure sensor (34) and a differential pressure sensor (32) have connection with a pneumotach (24) to derive instantaneous mask pressure and airflow respectively. A microcontroller (38) estimates a non-linear conductance of any leak path occurring at a mask (12) as being the low pass filtered instantaneous airflow divided by the low pass filtered square root of the instantaneous pressure. The instantaneous leak flow is then the conductance multiplied by the square root of the instantaneous pressure, and the respiratory airflow is calculated as being the instantaneous airflow minus the instantaneous leak flow. The time constants for the low pass filtering performed by the microcontroller (38) can be dynamically adjusted dependent upon sudden changes in the instantaneous leak flow.

Determination of leak and respiratory airflow

Methods and apparatus for determining leak and respiratory airflow are disclosed. A pressure sensor (34) and a differential pressure sensor (32) have connection with a pneumotach (24) to derive instantaneous mask pressure and airflow respectively. A microcontroller (38) estimates a non-linear conductance of any leak path occurring at a mask (12) as being the low pass filtered instantaneous airflow divided by the low pass filtered square root of the instantaneous pressure. The instantaneous leak flow is then the conductance multiplied by the square root of the instantaneous pressure, and the respiratory airflow is calculated as being the instantaneous airflow minus the instantaneous leak flow. The time constants for the low pass filtering performed by the microcontroller (38) can be dynamically adjusted dependent upon sudden changes in the instantaneous leak flow.

Methods and systems for leak estimation

The systems and methods include providing, displaying, and/or utilizing leak estimation during ventilation of a patient with a ventilator. The systems and methods include providing, displaying, and/or utilizing internal leak estimation, total leak estimation, and/or external leak estimation during ventilation of a patient with a ventilator.

System and Method for Diagnosis and Treatment of a Breathing Pattern of a Patient

Described is a system including a sensor and a processing arrangement. The sensor measures data corresponding to a patient's breathing patterns. The processing arrangement analyzes the breathing patterns to determine whether the breathing patterns are indicative of a REM sleep state. In another embodiment, the processing arrangement analyzes the breathing patterns to determine whether the breathing patterns are indicative of one of the following states: (i) a wake state and (ii) a sleep state. In another embodiment, a neural network analyzes the data to determine whether the breathing patterns are indicative of one of the following states: (i) a REM sleep state, (ii) a wake state and (iii) a sleep state. In another embodiment, the processing arrangement analyzes the data to determine whether the breathing pattern is indicative of an arousal.

Pressure support system with inductive tubing

A pressure support system includes a gas flow generating system a patient interface device, and a tubing. The gas flow generating system includes a gas source, a controller, and a first inductive coil. The patient interface device includes a second inductive coil and an input element. The tubing is disposed between the flow generating system and the patient interface device to carry a flow of gas from the gas source to the patient interface device. The tubing includes a third inductive coil structured to transmit power and/or a signal between the first inductive coil of the pressure support system controller and the second inductive coil of the patient interface device.

VENTILATOR SYSTEMS AND METHODS

Described herein are various embodiments of an oxygen concentrator system. In some embodiments, an oxygen concentrator system may be used to provide oxygen enriched gas to a patient undergoing ventilation.

BREATHING AIR SUPPLY WITH REBREATHING SYSTEM

An apparatus for supplying breathing air to a person includes a rebreathing system arranged in the air supply circuit, which removes CO2 at least in part present in the person's expiration air with a CO2 absorber, and treats the expiration air to supply treated air to the person again as inhalation air. The apparatus includes a condensate collection container (9) collecting water forming in the air supply circuit. The condensate collection container (9) is arranged at least in part below a reaction zone (17) of the CO2 absorber (1). At least one heat exchanger (10, 14) is provided in the CO2 absorber, via which heat from the air, which flows through the CO2 absorber and is heated as a result of the exothermic CO2 absorption reaction occurring in the reaction zone of the CO2 absorber, is dissipated.

Systems for inhalation of therapeutic and diagnostic gas and methods of use thereof

In one embodiment, the present invention provides a system to deliver at least one therapeutic gas to a spontaneously breathing patient, wherein the rate of delivery of the at least one therapeutic gas exceeds the patient's inspiratory flow rate, and the amount of the at least one therapeutic gas that is wasted is minimized or eliminated.

Vent arrangement for a respiratory device

A vent arrangement for a respiratory pressure therapy device may include one or a plurality of vents configured with a variable aperture for communicating a flow of breathable gas. The vent arrangement may be configured with a cross section profile exposed to the flow of breathable gas communicating through the vent that does not change as the aperture size changes. A vent arrangement may include a plurality of the vents and the aperture size of each vent may be controlled independently or together, and may be controlled according to one or more input signals from one or more sensors. Examples of suitable input signals include flow, pressure, noise, accelerometer outputs, orientation of a patient or presence of any obstructions. A patient interface or an air circuit may include the vent arrangement, or the vent arrangement may be configured to connect with a patient interface or an air circuit.

WATER RESERVOIR AND RESPIRATORY PRESSURE DEVICE

The present invention relates to a water reservoir (5110) for an apparatus (5000) for humidifying a flow of air. The water reservoir includes a base portion (5112) configured to hold a volume of water and a lid portion (5114) comprising an inlet (5118) and an outlet (5122). The lid portion is pivotably connected to the base portion to allow the water reservoir to be convertible between an open and a closed configuration. The water reservoir comprises a rotation guide (5220) and a rotation stop (5222) to define a range of rotation of the lid portion, wherein one end of the range of rotation is defined by the water reservoir being in the closed configuration and wherein the other end of the range of rotation is defined by a fully open position of the water reservoir. The rotation guide interferes with the rotation stop at the fully open position.

INTEGRATION AND MODE SWITCHING FOR RESPIRATORY APPARATUS

ПОДАЧА ПИТАНИЯ НА УСТРОЙСТВО ДЛЯ ДОСТАВКИ АЭРОЗОЛЯ

Изобретение относится к устройствам для доставки аэрозоля. Управляющий корпус, соединенный или выполненный с возможностью соединения с картриджем, который оснащен нагревательным элементом и содержит композицию предшественника аэрозоля, причем управляющий корпус соединен или выполнен с возможностью соединения с картриджем с образованием устройства для доставки аэрозоля, в котором нагревательный элемент выполнен с возможностью активирования и испарения компонентов композиции предшественника аэрозоля, при этом управляющий корпус содержит источник питания, соединенный с электрической нагрузкой, которая включает в себя нагреватель, когда управляющий корпус соединен с картриджем, при этом источник питания содержит суперконденсатор, выполненный с возможностью подачи питания на электрическую нагрузку и представляющий собой гибридный конденсатор; преобразователь (DC-DC) постоянного напряжения в постоянное, соединенный с суперконденсатором между суперконденсатором и электрической нагрузкой; демпферную ...

СИНТЕЗ ОКСИДА АЗОТА ДЛЯ ВДЫХАНИЯ

Группа изобретений относится к медицинской технике. Способ генерации оксида азота предусматривает сбор информации, относящейся к одному или нескольким инициирующим событиям, связанным с вдыхаемым воздухом; определение одного или нескольких контрольных параметров на основании собранной информации и возбуждение ряда электрических дуг для генерации оксида азота на основании определенных контрольных параметров. Раскрыты аппарат для генерации оксида азота, система генерирования оксида азота и имплантируемые аппараты для генерирования оксида азота. Технический результат состоит в обеспечении синтеза азота для дыхания. 5 н. и 40 з.п. ф-лы, 38 ил.

СИСТЕМА ГЕНЕРИРОВАНИЯ АЭРОЗОЛЯ С КОНТРОЛЕМ ПОТРЕБЛЕНИЯ И ОБРАТНОЙ СВЯЗЬЮ

Изобретение относится к системе генерирования аэрозоля, которая выполнена для оральной или назальной доставки генерируемого аэрозоля пользователю, и содержащая нагревательный элемент, выполненный для нагревания образующей аэрозоль основы для генерирования аэрозоля; источник питания, соединенный с нагревательным элементом; контроллер, соединенный с нагревательным элементом и с источником питания, при этом контроллер выполнен для управления работой нагревательного элемента, причем контроллер включает в себя или соединен со средством выявления изменения потока воздуха мимо нагревательного элемента; первое средство хранения данных, соединенное с контроллером, для записи выявленных изменений потока воздуха мимо нагревательного элемента и данных, относящихся к работе нагревательного элемента; и второе средство хранения данных, содержащее базу данных, соотносящую изменения потока воздуха и данные, относящиеся к работе нагревательного элемента, со свойствами аэрозоля, доставляемого пользователю ...

НЕИНВАЗИВНАЯ ОЦЕНКА ВНУТРИПЛЕВРАЛЬНОГО ДАВЛЕНИЯ И/ИЛИ ВЫЧИСЛЕНИЕ РАБОТЫ ДЫХАНИЯ НА ОСНОВАНИИ НЕИНВАЗИВНОЙ ОЦЕНКИ ВНУТРИПЛЕВРАЛЬНОГО ДАВЛЕНИЯ

Группа изобретений относится к медицине, а именно к определению физиологического состояния субъекта. Предложен способ определения внутриплеврального давления субъекта, включающий: получение первого физиологического параметра, представляющего собой неинвазивно измеренное давление в дыхательных путях субъекта; получение второго физиологического параметра, представляющего собой неинвазивно измеренный воздушный поток в легкие субъекта; определение объема легких субъекта посредством математического интегрирования второго физиологического параметра; неинвазивную оценку третьего физиологического параметра, представляющего собой внутриплевральное давление субъекта, на основании первого и второго физиологических параметров и объема легких, генерацию сигнала, представляющего собой этот параметр. Также предложен способ определения работы дыхания, включающий: получение неинвазивно оцененного внутриплеврального давления субъекта; определение объема легких субъекта, основанное на неинвазивно измеренном ...

СПОСОБ УПРАВЛЕНИЯ ДАВЛЕНИЕМ И ГАЗОВОЙ СМЕСЬЮ ДЛЯ НЕИНВАЗИВНОЙ ИСКУССТВЕННОЙ ВЕНТИЛЯЦИИ ЛЕГКИХ

Группа изобретений относится к медицинской технике, а именно к устройству (100) для искусственной вентиляции легких и способу управления давлением и газовой смесью для воздушного потока устройства для искусственной вентиляции легких. Устройство (100) выполнено с возможностью управления давлением и газовой смесью для потока воздуха и содержит источник (220) газа. Устройство имеет пропорциональный клапан (210), выполненный с возможностью управления скоростью потока газа из источника газа. Устройство включает контроллер (170) смеси, сообщающийся с пропорциональным клапаном. Контроллер смеси выполнен с возможностью мониторинга потока газа, проходящего через нагнетатель воздуха, и дополнительно выполнен с возможностью управления процентным содержанием кислорода в выходном потоке. Устройство включает двигатель (160) нагнетателя воздуха и контроллер (162) двигателя нагнетателя воздуха, выполненный с возможностью управления скоростью двигателя нагнетателя воздуха с использованием контура обратной ...

НЕИНВАЗИВНАЯ ОЦЕНКА ВНУТРИПЛЕВРАЛЬНОГО ДАВЛЕНИЯ И/ИЛИ ВЫЧИСЛЕНИЕ РАБОТЫ ДЫХАНИЯ НА ОСНОВАНИИ НЕИНВАЗИВНОЙ ОЦЕНКИ ВНУТРИПЛЕВРАЛЬНОГО ДАВЛЕНИЯ

ДЫХАТЕЛЬНЫЙ АППАРАТ

... 1. Аппарат, содержащий:нагнетатель, выполненный с возможностью обеспечивать подачу дыхательного газа;трубку для доставки, выполненную с возможностью обеспечивать подачу дыхательного газа в дыхательный интерфейс пользователя, причем трубка для доставки имеет внутренний диаметр приблизительно 15 мм или менее;систему управления, выполненную с возможностью предоставлять управляющий сигнал нагнетателю для управления давлением подачи дыхательного газа между приблизительно 1 см HO и приблизительно 6 см HO в дыхательном интерфейсе пользователя, причем управляющий сигнал основан, по меньшей мере, частично на одном из давления и скорости потока подачи дыхательного газа в дыхательном интерфейсе пользователя.2. Аппарат по п. 1, в котором нагнетатель выполнен с возможностью подавать дыхательный газ, который имеет пиковое давление приблизительно 25 мбар при скорости потока приблизительно 100 л/мин на выпуске нагнетателя.3. Аппарат по п. 1, в котором нагнетатель выполнен с возможностью подачи дыхательного ...

СИСТЕМЫ И СПОСОБЫ ОПРЕДЕЛЕНИЯ ДОЛИ ВДЫХАЕМОГО КИСЛОРОДА ВО ВРЕМЯ ВЕНТИЛЯЦИИ ЛЕГКИХ

... 1. Дыхательное устройство, содержащее(a) генератор (140) давления, выполненный с возможностью создания потока дыхательного газа под давлением для подачи в дыхательные пути пациента;(b) интерфейс (180) пациента, выполненный с возможностью направления потока дыхательного газа под давлением в дыхательные пути пациента, при этом интерфейс пациента содержит объем мертвого пространства;(c) один или более датчиков (142), выполненных с возможностью создания выходных сигналов, передающих информацию, связанную с расходом и/или давлением в интерфейсе пациента; и(d) один или более процессоров (110), выполненных с возможностью исполнения компьютерных программных модулей, причем компьютерные программные модули содержат(i) управляющий модуль (111), выполненный с возможностью управления генератором давления для создания потока дыхательного газа под давлением, по меньшей мере, для частичной механической вентиляции легких пациента;(ii) модуль (112) определения параметров, выполненный с возможностью:(1) определения ...

Zone heating for respiratory circuits

A heater base for supplying humidified gases to a patient

Closed loop oxygen control

The present disclosure provides for a flow therapy apparatus that can implement one or more closed loop control systems to control the flow of gases of a flow therapy apparatus. The flow therapy apparatus can monitor blood oxygen saturation (SpO2) of a patient and control the fraction of oxygen delivered to the patient (FdO2). The flow therapy apparatus can automatically adjust the FdO2 in order to achieve a targeted SpO2 value for the patient.

Zone heating for respiratory circuits

Conduit connector for a patient breathing device

A first connector 120 has at least one ridge formed on an inside surface of the connector, a first aperture 155 to receive a connecting adapter 140, and a second aperture to receive a conduit such as oxygen delivery tubes 110 leading to a nasal cannula. The connector may also (or instead) have a locking groove formed around the circumference of an interior surface. The connecting adapter is to couple the connector with a second connector 125 which could be attached to an oxygen supply hose. The connecting adapter has an annular locking channel 160 bounded by a collar. The ridge or ridges on the interior surface of the first connector are configured to engage and lock with the locking channel, and the locking groove locks onto the collar. The connecting adapter may also have locking fingers 153 with locking recesses 154 which engage with locking tabs on the interior of the second connector. There may be alignment tabs on the interior surface of the second connector to guide the locking fingers ...

Deterministically controlled humidification system

Zone heating for respiratory circuits

A medical tube, such as an inspiratory limb 202 for an incubator, with first 202a and second 202b segments each with heater wires 206a. Each segment includes a first spirally wound elongate hollow body [1203, figure 17B], and a second elongate member [1205 figure 17b] spirally wound between adjacent turns of the first member, which may be for support. The spiral members may define the lumen of the tube for conveying gases in breathing circuit. The segments may be different lengths and may be electronically and mechanically coupled by an intermediate section. The first elongate hollow body may be perforated, flexible and/or filled with gas. The inspiratory limb can be controlled by a switch to operate in two modes; in a first mode, where power is provided to the heater wire circuit of the first segment, and a second mode which provides power to both the heater wires of the first and second segments.

Closed loop oxygen control

Deterministically controlled humidification system

A user interface and system for supplying gases to an airway

Closed loop oxygen control

Breathing assistance apparatuses and/or components thereof and/or uses thereof

This disclosure enables displaying of an intuitive and engaging enquiry on a touchscreen of a medical device (e.g., breathing apparatus, breathing assistance apparatus) that a patient is already using (e.g., in-home medical device). Since the patient is already accustomed to using the medical device for medical treatment control, the patient, who may be unwell, is more likely to access the enquiry and complete the enquiry. Further, making the enquiry intuitive and engaging encourages the patient to regularly interact with the enquiry, while ensuring that the enquiry is not overly tedious to complete. Responding to the enquiry can be made mandatory by refraining from activating or preventing activation of a component of the apparatus until a predetermined set of responses has been received.

MORE ZERST�UBER

DETERMINATION OF A LEAKAGE AIR CURRENT

A control device for an electronic aerosol provision system

A control device for an electronic aerosol provision system is provided. The control device is configured to receive a replaceable component to form an electronic aerosol provision system. The control device includes a communication interface for performing communications external to the electronic aerosol provision system; a memory configured to hold a set of stored identifiers; and a control system. The control system is configured to: receive control information from a remote server via the communication interface; update the set of stored identifiers based on the control information received from the remote server; receive an identifier from a replaceable component received by the control device; make a comparison of the received identifier against the set of stored identifiers; and perform a control action for the electronic aerosol provision system dependent upon the result of said comparison.

Use of inhaled nitric oxide for the treatment of pulmonary hypertension associated with lung disease

Described herein are methods of using inhaled nitric oxide for treating pulmonary hypertension and/or improving oxygen saturation in a patient with a ventilation-perfusion (V/Q) mismatch and/or pulmonary hypertension associated with lung disease.

Positive airway pressure system with integrated oxygen

A device and a system that delivers continuous positive airway pressure in conjunction with oxygen delivery is disclosed. The system is portable so that patients may be mobile and conveniently travel. Several means are disclosed for integrating oxygen production into a positive airway pressure (PAP) device, including oxygen production machinery entirely integrated into the PAP housing, oxygen production machinery that mates with a PAP device but which may operate independently, and where portions of the oxygen production machinery are located in the PAP housing and other portions (for example, the compressor) are located in a separate module, such as, for example, an AC-to-DC power conversion module.

Automated sleep phenotyping

Method and Apparatus for Detecting and Treating Heart Failure

Devices and systems provide methods of detecting a heart failure condition of a patient that may be based on one or more respiratory parameters of a patient. In an example embodiment, a monitoring device determines one or more heart failure condition indicators based on a measure of the patient respiratory airflow and/or a measure of treatment pressure. Respiratory parameters such as respiration rate, hypopneas, apneas, Cheyne-Stokes breathing patterns or apnea-hypopnea counts may be compared to thresholds that are selected to represent a change in the condition of a heart failure patient such as an onset of a decompensation event. Results of the comparisons may trigger a pressure treatment change and/or one or more warnings or messages to notify a patient or physician of a pending change to the patient's heart failure condition so that the patient may more immediately seek medical attention to treat the heart failure condition. Fig. 1 ...

System and method for entraining the breathing of a subject

A respiration appliance (10) is configured to entrain the breathing of a subject. The breathing of the subject is entrained to modulate the autonomic nervous system of the subject to decrease sympathetic nerve activity and/or to reduce sympathetic/parasympathetic balance in order to provide relaxation to the subject. The respiration appliance (10) restricts the exhalation of the subject, while permitting substantially unencumbered inhalation, to impact the breathing of the subject in a manner that enhances relaxation.

Humidification apparatus having RFID tag sensor at patient end of gas pathway

Distinguishing closed and open respiratory airway apneas by complex admittance values

Methods and apparatus are disclosed for determining the occurrence of a closed or open apnea. Respiratory air flow from a patient is measured to give an air flow signal. The determination of an apnea is performed by applying an oscillatory pressure waveform of known frequency to a patient's airway, calculating a complex quantity representing a patient admittance (12) and comparing its value with ranges (14,16) indicative of open or closed apneas. The method distinguishes open from closed apneas even when the model used to calculate admittance is not based on details of the respiratory apparatus. In addition the patient admittance may be compared with admittance during normal breathing to avoid having to characterize the airway.

Method and Apparatus for Detecting and Treating Heart Failure

Devices and systems provide methods of for evaluating a heart failure condition with a respiratory treatment apparatus. The method comprises determining a measure of treatment pressure delivered by the respiratory treatment apparatus with a sensor; and controlling a determination of a heart failure condition change indicator with a processor based on changes in the measure of pressure over time, the indicator representing information about a change in a heart failure condition of the patient. Fig. 1 ...

Systems and Methods for Diagnosing and Treating Sleep Disorders

A method for diagnosing and treating sleep disorders with a sleep therapy auto-titrator for in-home use by the patient includes the step of collecting, recording and analyzing sleep data in real time with the auto-titrator. Corrective action is provided in real time to the patient to mitigate sleep events based upon the collected sleep data. The collected sleep data is transmitted, via a global computer information system, to a remote server for storage. The stored sleep data is analyzed by a computer programmed with an algorithm to monitor therapy effectiveness daily and for identifying one or more therapy intervention recommendations. An alert is provided to at least one of the patient or a sleep therapy professional associated with the patient communicating the one or more intervention recommendations.

Systems and Methods of Adjusting Ventilator Modes and Settings Visually Via a Touchscreen

The systems and methods of the present application provides a graphical user interface (GUI) for adjusting the modes and settings of a patient ventilator. Upon selecting the type of breath setting (mechanical and/or pressure supported), and the target and control parameters for each breath setting, an ideal set of pressure, flow and volume waveforms are displayed on a touch-screen GUI. The user is then able to adjust any of the waveforms using the touch-screen GUI to the desired ventilator settings for that particular patient. The user then confirms the settings and the ventilator operates according to the user-set waveforms.

Inhaler

An inhaler, the inhaler including a body ( 104 ) and a cartridge ( 106 ), the cartridge comprising a dose storage portion ( 122 ) and an airway ( 124 ), 102 the dose storage portion being suitable for containing a plurality of doses of an inhalable medicament, the airway including a mouthpiece ( 128 ) at an end thereof, the inhaler device configured and arranged such that a dose of inhalable medicament from the dose storage portion can be accessed and arranged in a delivery configuration for delivery to a user through the airway upon inhalation through the mouthpiece by the user, the inhaler characterised in that the cartridge is replaceably removable from the body.

Virtual ventilation screen

A method for displaying ventilator data at a remote device. The method includes accessing ventilator data of a ventilator associated with a patient, by a remote device; and displaying the ventilator data, at the remote device.

Childbirth labor coach with paced breathing

A system ( 10 ) configured to prompt a subject ( 12 ) to consciously alter one or more breathing parameters during childbirth. The system includes a pressure generator ( 14 ) that generates a pressurized flow of breathable gas for delivery to an airway of the subject during childbirth and a processor ( 22 ) that controls the pressure generator to adjust one or more gas parameters of the gas in the pressurized flow of breathable gas to provide breathing cues to the subject in accordance with a breathing regime associated with labor contractions, wherein the breathing cues prompt the subject to consciously alter one or more breathing parameters of respiration.

METHODS AND APPARATUS FOR THE SYSTEMIC CONTROL OF VENTILATORY SUPPORT IN THE PRESENCE OF RESPIRATORY INSUFFICIENCY

A method and apparatus for providing ventilatory assistance to a spontaneously breathing patient an error signal () is computed that is the difference between a function of respiratory airflow () over a period of time and a target value (). Using a servo loop, air is delivered to the patient at a pressure that is a function of the error signal, the phase of the current breathing cycle, and a loop gain that varies depending on the magnitude of the error signal. The loop gain increases with the magnitude of the error signal, and the gain is greater for error signals below a ventilation target than for error signals above the ventilation target value. The target value () is an alveolar ventilation that takes into account the patient's physiologic dead space. 1. A method for providing ventilatory assistance to a spontaneously breathing patient comprising continuously repeating the steps of:determining respiratory airflow,computing a measure of the difference between a function of respiratory airflow over a period of time and a target value,determining the phase of the current breathing cycle, anddelivering air to the patient at a pressure that is a function of the product of (a) said difference measure, (b) the amplitude at the determined phase of the current breathing cycle of an amplitude-versus-phase template that is appropriate for a normal breathing cycle, and (c) a gain factor that varies depending on the magnitude of said difference measure.2. A method for providing ventilator assistance in accordance with wherein said gain factor increases with the magnitude of said difference measure.3. A method for providing ventilator assistance in accordance with wherein for equal difference measures below and above said target value claim 2 , the gain factor is greater for difference measures below said target value.4. A method for providing ventilator assistance in accordance with wherein said target value is an alveolar ventilation that takes into account the patient's ...

DRIVING METHOD FOR METERING PUMP, DRIVING APPARATUS FOR METERING PUMP, VAPORIZER, AND ANESTHESIA APPARATUS

[Problems] To provide a driving method for a metering pump, a driving apparatus for a metering pump, a vaporizer and an anesthesia apparatus which are capable of suppressing a pulsation in the metering pump, and lowering the costs and reducing the sizes of the vaporizer and the anesthesia apparatus. 1. A driving method for a metering pump which includes an eccentric mechanism converting a revolving motion of a motor into a reciprocating motion of a plunger of the metering pump , and makes a constant liquid delivery by sucking and discharging a liquid through variations in the cubic volume of a cylinder of the metering pump caused by the reciprocating motion of the plunger ,wherein a discharge period of the metering pump is set to be longer than a suction period of the metering pump, and the revolution speed of the motor is controlled so that the travelling speed of the plunger is kept constant during the discharge period.2. The driving method for the metering pump according to claim 1 , wherein during the discharge period of the metering pump claim 1 , to vary the revolution speed of the motor in a sinusoidal form at intervals of a predetermined angle so that the motor makes a sinusoidal revolving motion.3. A driving apparatus for a metering pump claim 1 , comprising:a motor;a control section controlling the revolution of the motor; and 'wherein the control section sets a discharge period of the metering pump to be longer than a suction period of the metering pump, and controls the revolution speed of the motor so that the travelling speed of the plunger is kept constant during the discharge period.', 'a metering pump joined to the motor, the metering pump including an eccentric mechanism converting a revolving motion of the motor into a reciprocating motion of a plunger of the metering pump, and making a constant liquid delivery by sucking and discharging a liquid through variations in the cubic volume of a cylinder of the metering pump caused by the reciprocating ...

Systems and methods for concurrent airway stabilization and pulmonary stretch receptor activation

A method for the concurrent treatment of obstructive sleep apnea and hypertension in a patient, the method comprises: a) providing a flow of treatment to an airway of the patient in accordance with an initial set of flow parameters; b) determining that the patient has achieved stable breathing while receiving the provided flow of treatment gas in accordance with the initial set of parameters; c) increasing the flow parameters; d) providing the flow of treatment gas to the airway of the patient in accordance with the increased flow parameters until it is determined that a predetermined period of time has elapsed; e) further increasing the flow parameters; and f) providing the flow of treatment gas to the airway of the patient in accordance with the further increased flow parameters for a predetermined time.

System and Method for Concentrating Gas

Embodiments of gas concentrating systems and methods are provided. These systems and methods comprise configuration of hardware and software components to monitor various sensors associated the systems and methods of concentrating gas as described herein. These hardware and software components are further configured to utilize information obtained from sensors throughout the system to perform certain data analysis tasks. Through analysis, the system may, for example, calculate a time to failure for one or more system components, generate alarms to warn a user of pending component failure, modify system settings to improve functionality in differing environmental conditions, modify system operation to conserve energy, and/or determine optimal setting configurations based on sensor feedback.

System and method for sleep disorders: screening, testing and management

The present invention provides a system and/or platform that can efficiently monitor/manage patients with sleep disorders. In one embodiment, the system and platform can train and/or certify (or help in training/certifying) service providers/professionals. In one embodiment, the system and platform is integrated with a software or an information system to manage data related to patients. In one embodiment, the system and platform utilizes home sleep test which is more convenient and acceptable. In one embodiment, the system/platform provides the information and knowledge related to a subject's conditions.

AUTOTITRATING METHOD AND APPARATUS

An apparatus and method of controlling the delivery of therapeutic gas delivered to a patient undergoing positive airway pressure therapy is described. The method includes providing a flow of gas to a patient's airway at a pressure, obtaining information from the range of 0 to 25 Hz of the frequency domain of the flow, and adjusting the pressure based on the information. The apparatus includes a blower for providing a flow of gas to a patient's airway at a pressure, a sensor to measure a characteristic of the flow, a controller to obtain information from the range of 0 to 25 Hz of the frequency domain of the characteristic, and a pressure regulator for adjusting the pressure based on the information. 150-. (canceled)51. A positive airway pressure therapy apparatus comprising:a blower configured to provide a flow of gas to an airway of a patient at a pressure; and causing a decrease of the pressure responsive to detection of the normal breathing event; and', causing an increase of the pressure of the flow of gas by a preset pressure increase or a pressure increase determined based on a magnitude of the pressure decrease,', 'wherein a determination of whether to increase the pressure by the preset pressure increase or the pressure increase determined based on the magnitude of the pressure decrease is based on the magnitude of the pressure decrease., 'responsive to detection of the sleep disordered breathing event preceded by a pressure decrease], 'a controller configured to adjust the pressure of the flow of gas responsive to detection of a normal breathing event or a sleep disordered breathing event by52. The apparatus of claim 51 , wherein the preset pressure increase is based on a type of the sleep disordered breathing event claim 51 , and wherein the type of the sleep disordered breathing event comprises a partial airway obstruction claim 51 , apnea claim 51 , or hypopnea.53. The apparatus of claim 51 , wherein an amount of the pressure increase is further ...

SYSTEM AND METHOD OF DETECTION OF WATER IN A CONDUIT FOR USE IN A RESPIRATORY THERAPY SYSTEM

We provide a respiratory therapy system comprising: 1. A respiratory therapy system configured to detect the presence of liquid water in a breathing gases respiratory conduit for use in respiratory treatment of a patient , the system comprising a controller configured to:a) retrieve at least one first signal associated with or indicative of a gases flow and/or pressure in the respiratory conduit;b) determine a measure of at least one first parameter associated with gases flow perturbations and/or pressure perturbations for at least one portion of the retrieved at least one first signal; andc) determine the presence of liquid in the respiratory conduit based at least in part on the measure(s) of the at least one first parameter meeting a first threshold.2. The respiratory therapy system of claim 1 , wherein the controller is further configured to:a) determine at least one further first parameter associated with flow perturbations and/or pressure perturbations for at least one further portion of the received at least one first signal; andb) determine the presence of liquid in the respiratory conduit further based at least in part on the at least one further first parameter meeting the first threshold.3. The respiratory therapy system of or claim 1 , wherein the controller is configured to identify the gases flow perturbations and/or pressure perturbations for the associated portion of the retrieved at least one first signal based at least in part on a comparison between that at least one portion of the retrieved signal and a reference.4. The respiratory therapy system of claim any preceding claim claim 1 , wherein the controller is further configured to:a) retrieve information indirectly related to gases flow and/or pressure;b) determine a measure of at least one second parameter associated with the retrieved information, and wherein the determination the presence of liquid in the respiratory conduit is further based at least in part on the measure(s) of the at least ...

Delivering variable positive airway pressure depending on awake state and sleep disordered breathing

Positive airway pressure (“PAP”) systems and methods are provided which supply a patient with a range of pressures for treatment when the patient is determined to be asleep, and an awake pressure for use when the patient is determined to be awake, the awake pressure configured for the comfort of the patient. The awake pressure is configured to be lower than the lower bound of the pressure range and can be a therapeutic or sub-therapeutic pressure. The PAP systems and methods disclosed herein advantageously allow for the pressure range to be tailored for effective treatment of sleep disordered breathing while allowing the awake pressure to be set for the comfort of the patient. This can advantageously increase both the efficacy of the treatment of SDB and patient compliance with the treatment.

Pressure range adjustment for respiratory therapy device

An automatic positive airway pressure (AutoPAP) therapy device can be configured such that the minimum and/or maximum pressures deliverable by the device can automatically change. The minimum and/or maximum pressures can change as a function of pressures delivered over the course of the current therapy session and/or over the course of prior therapy sessions. The minimum and/or maximum pressures can also change as a function of the presence, absence, type, severity, or length of sleep disordered breathing events (SDBE) detected by the device over the course of the current therapy session and/or over the course of prior therapy sessions.

System and Method For Cooling The Brain Of A Human Subject

A system for cooling the brain of a human subject, includes a cooling subsystem which inputs a flow of air or breathable gas, cool the air or breathable gas, and outputs cooled air or breathable gas which is delivered to a human subject. A flow control device controls a flow rate of the flow of the air or breathable gas input to the cooling subsystem and a flow rate of the cooled air or breathable gas delivered to the human subject. One or more flow rate sensors measure at least a flow rate of flow of cooled air or breathable gas. One or more temperature sensors measure at least a temperature of a brain and the temperature of the flow of cooled air or breathable gas. A controller adjusts a cooling rate, the temperature, and the flow rate of flow of cooled air or breathable gas delivered to the human subject to cool the brain of the human subject.

ZONE HEATING FOR RESPIRATORY CIRCUITS

Some embodiments provide for an inspiratory limb for a breathing circuit that includes a first segment that comprises a first heater wire circuit and a second segment that comprises a second heater wire circuit. The inspiratory limb can include an intermediate connector that includes a connection circuit that electrically couples the first heater wire circuit to the second heater wire circuit. The inspiratory limb can be configured to operate in two modes wherein, in a first mode, electrical power passes through the first electrical connection to provide power to the first heater wire circuit without providing power to the second heater wire circuit, and in a second mode, electrical power pass through the first electrical connection to provide power to both the first heater wire circuit and the second heater wire circuit. 126.-. (canceled)27. A breathing circuit comprising: a first segment and a second segment, a patient end of the first segment configured to be coupled to a chamber end of the second segment, and a patient end of the second segment configured to be coupled to a patient interface,', 'the first segment including a first heater wire circuit and the second segment including a second heater wire circuit;, 'an inspiratory tube configured to be used in more than one distinct zone, the inspiratory tube includingan intermediate connector mechanically coupling the first and second segments, the intermediate connector comprising electrical connectors connecting the first heater wire circuit and the second heater wire circuit, the intermediate connector including a diode between the first heater wire circuit and the second heater wire circuit, andan expiratory tube including an expiratory heater wire circuit,wherein the diode prevents power of a first polarity that is delivered to the first heater wire circuit from being delivered to the second heater wire circuit, and allows power of a second polarity that is delivered to the first heater wire circuit to be ...

MULT-NIGHT TITRATION PRESSURE DETERMINATION

A multi-night titration (MNT) process to find an optimal single therapeutic pressure of a CPAP device. This single therapeutic pressure can then be used on an on-going basis by the patient after the titration period. The MNT process differs from current auto adjusting processes used for titration (or ongoing use) in that the MNT process does not respond locally by adjusting pressures to individual events. With existing devices, the continuous adjustment of supplied air pressure always responds to one or a small number of events and thus fails to compensate for a patient's adaptation thereto, resulting in the supply of a less than optimal therapeutic pressure to the patient. While auto adjusting processes often capture and respond well to short-term and transient conditions, the MNT process of the current disclosure seeks to capture long term trends and find the most suitable average single pressure for a patient. 1. A continuous positive airway pressure (CPAP) system comprising:an air pressure supply arrangement providing at least a first air pressure to a patient airway during a first time period and a second air pressure during a second time period;a sensor detecting the flow to the patient's airways to generate flow data; anda hardware processor configured to analyze the flow data from the sensor, the processor controlling the air pressure delivered to the airway based on a titration process, the titration process including a fast titration process and a slow titration process;wherein the fast titration process responds quickly to patient breathing events in order to adjust a pressure supplied to a patient; andwherein the slow titration process maintains a constant pressure over a predetermined period of time without responding with pressure changes to individual or small groups of patient breathing events.2. The CPAP system of claim 1 , wherein patient breathing events comprise one or more of apneas claim 1 , hypopneas claim 1 , short periods of inspiratory flow ...

ZONE HEATING FOR RESPIRATORY CIRCUITS

Some embodiments provide for an inspiratory limb for a breathing circuit that includes a first segment that comprises a first heater wire circuit and a second segment that comprises a second heater wire circuit. The inspiratory limb can include an intermediate connector that includes a connection circuit that electrically couples the first heater wire circuit to the second heater wire circuit. The inspiratory limb can be configured to operate in two modes wherein, in a first mode, electrical power passes through the first electrical connection to provide power to the first heater wire circuit without providing power to the second heater wire circuit, and in a second mode, electrical power pass through the first electrical connection to provide power to both the first heater wire circuit and the second heater wire circuit. 126.-. (canceled)27. A respiratory humidification system comprising:a humidification unit; andan inspiratory limb configured to deliver respiratory gases from the humidification unit to a patient, the inspiratory limb comprising a first segment and a second segment, the first segment including first inspiratory heater wires and the second segment including second inspiratory heater wires;wherein the humidification unit is configured to identify a connected tube through detection, or measurement, or both of an identification resistor, and,wherein, in response to identifying the connected tube, the humidification unit is configured to selectively operate in both a first mode in which power is provided to the first inspiratory heater wires and a second mode in which power is provided to the first and second inspiratory heater wires.28. The respiratory humidification system of claim 27 , further comprising an expiratory limb configured to transport exhaled gases away from the patient claim 27 , the expiratory limb comprising expiratory heater wires.29. The respiratory humidification system of claim 27 , wherein the connected tube is the inspiratory ...

Vent arrangement for respiratory mask

A control system provides automated control of gas washout of a patient interface, such as a mask or nasal prongs. A gas washout vent assembly of the system may include a variable exhaust area, such as one defined by gears, radial exhaust revolvers and/or flow diverters for a conduit having a variable gas passage channel. The vent assembly may be attached substantially near or included with the patient interface. An actuator of the assembly, such as a solenoid, motor or voice coil, manipulates the vent assembly. The actuator may be configured for control by a processor to change the exhaust area of the vent assembly based on various methodologies including, for example, sleep detection, disordered breathing event detection and/or leak detection. 1. An apparatus for automated control of gas washout of a patient interface of a respiratory treatment apparatus comprising:a vent assembly having a variable exhaust area, the vent assembly being associated with a patient interface to vent expiratory gas, the vent assembly including a first gear having a first flow bore; andan actuator to manipulate orientation of the flow bore of the first gear to vary the exhaust area.2. The apparatus of further comprising a second gear claim 1 , the second gear including a second flow bore claim 1 , the first and second gears adapted in a meshed configuration.3. The apparatus of wherein a rotation of the first and second gears closes of the first and second flow bores to prevent a transfer of gas through a conduit of the vent assembly.4. The apparatus of wherein a rotation of the first and second gears opens the first and second flow bores to permit a transfer of gas through a conduit of the vent assembly.5. The apparatus of wherein the first gear comprises a set of teeth surrounding a periphery of the first gear.6. The apparatus of further comprising a controller including a processor claim 1 , the controller coupled with the actuator claim 1 , the controller configured to operate the ...

Nasal Airway Pressure Monitoring System

A nasal airway pressure monitoring system and method for use with neonatal patients is provided. The nasal airway pressure monitoring system has a nasal catheter, a pressure monitor, and a respiratory circuit supplying a respiratory gas. The nasal catheter is connected at a first end to the pressure monitor via a sample line and the second end of the nasal catheter is positioned in a nares. Upon delivery of gas flow through the patient respiratory circuit, the nasal catheter transmits pressure waveform data from the nasal airway to the pressure monitor. The pressure monitor processes the pressure waveform data. If the mean airway pressure is outside of a pre-set range of maximum and minimum limits, an alarm is triggered.

DESIGN AND IMPLEMENTATION OF A LOW-COST BREATHING SUPPORT DEVICE

Respiratory diseases affect a large part of world population, especially in developing world. In this invention, we present a breathing support system to provide life-saving support to such patients. The system automates and regulates the use of a bag valve mask (commonly known as an ambu bag). The system uses mechanical actuators, sensors and a smart feedback control mechanism to automate and regulate the operation of the ambu bag to implement core functions of mechanical ventilation for life-saving applications. The system can also be used to provide better breathing support to newborns (e.g. to prevent hypoxia). The system can be used to save hundreds of thousands of lives in the developing world, in emergencies and during transportation globally. 1. A breathing support device comprising ,a system control unit that receives information from a sensing unit and commands from a user and generates signals to control a mechanical actuation unit;wherein, the mechanical actuation unit moves a gas volume generator to generate the desired breathing pattern;wherein the gas volume generator stores air, oxygen or their mixture for current breathing cycle;wherein the sensing unit comprises of gas flow and pressure sensors to ensure safe and effective operation of the breathing cycle;a power management unit to power the system using either an alternating current source or direct current source;a user-interface unit to get desired breathing parameters from medical practitioners and to display system status.2. The system control unit of claim 1 , further comprising a microcontroller to process signal from different sensors and to generate commands to control mechanical actuation unit.3. The mechanical actuation unit of claim 1 , further comprising a pair of rounded jaws that are moved by an electrical motor through a gear assembly consisting of two gears.4. The mechanical actuation unit of claim 1 , further comprising a pair of rounded jaws that are move to-and-fro by rack-and- ...

INSPIRATORY SYNTHESIS OF NITRIC OXIDE

A system for generating nitric oxide can include an apparatus positioned in a trachea of a mammal, the apparatus in-eluding a respiration sensor for collecting information related to one or more triggering events associated with the trachea, an oxygen sensor for collecting information related to a concentration of oxygen in a gas, and one or more pairs of electrodes for initiating a series of electric arcs to generate nitric oxide, and the system for generating nitric oxide can also include a controller for determining one or more control parameters based on the information collected by the respiration sensor and the oxygen sensor, wherein the series of electric arcs is initiated based on the control parameters determined by the controller. 147-. (canceled)48. An apparatus comprising:a reaction chamber including one or more pairs of electrodes configured to generate a series of electric arcs to synthesize a reactant gas containing at least nitrogen and oxygen to a product gas containing nitric oxide;a sensor configured to measure one or more characteristics of the reactant gas or the product gas; anda controller in communication with the one or more pairs of electrodes and the sensor, the controller being configured to detect a triggering event based on the one or more characteristics of the reactant gas or the product gas and initiate the series of electric arcs a predetermined amount of time ahead of the triggering event to increase a concentration of nitric oxide in the product gas.49. The apparatus of claim 48 , wherein the predetermined amount of time ahead of the triggering event is configured to be adjusted to control the concentration of nitric oxide in the product gas.50. The apparatus of claim 48 , wherein the one or more characteristics include at least one of a direction of flow of the reactant gas claim 48 , a tidal volume of a flow of the reactant gas claim 48 , a timing of a flow of the reactant gas claim 48 , a change in temperature of a flow of the ...

Discrimination of cheyne-stokes breathing patterns

A method of a processor for detecting a presence of Cheyne-Stokes respiration from a respiration signal includes accessing data representative of a respiration signal. Data is assessed to detect apnea and/or hypopnea events. A cycle length histogram is determined based on the events and an incident of Cheyne-Stokes respiration is detected based on the cycle length histogram.

PATIENT INTERFACE HAVING ILLUMINATED PORTION

A coupling for use in a system () for communicating a flow of gas from a pressure generating device () to an airway of a patient includes a first portion () adapted to be coupled in fluid communication with the pressure generating device and a second portion () selectively coupled to the first portion. The second portion is adapted to be coupled in fluid communication with the airway of the patient. At least one of the first portion and the second portion includes an illuminated portion (), the illuminated portion being adapted to be visible to a patient when the first and second portions are uncoupled and adapted to be not visible to a user when the first and second portions are coupled. The illuminated portion assists a user in locating and recoupling the first and second portions of the coupling in a darkened room. 1. A coupling for use in a system for communicating a flow of gas from a pressure generating device to an airway of a patient , the coupling comprising:a first portion disposed at an end of a flexible conduit adapted to be coupled in fluid communication with the pressure generating device; anda second portion selectively coupled to the first portion, the second portion adapted to be coupled in fluid communication with the airway of the patient, wherein at least one of the first portion and the second portion comprises an illuminated portion, wherein the illuminated portion is adapted to be visible to a patient when the first and second portions are uncoupled and wherein the illuminated portion is adapted to be not visible to a user when the first and second portions are coupled.2. The coupling of claim 1 , wherein the illuminated portion is adapted to be visible to a patient when the first and second portions are partially uncoupled.3. The coupling of claim 1 , wherein the illuminated portion comprises a photoluminescent material.4. The coupling of claim 1 , wherein the illuminated portion comprises an electrically powered light source.5. The coupling ...

Ventilator for high-flow oxygen therapy

A ventilator (100) ventilates a patient (102) by a high-flow oxygen therapy via a tube system (104). The ventilator has at least one sensor element (110), at least one actuatable inhalation valve or exhalation valve (120) and a control unit (130). The sensor element is arranged and configured to determine and to output a measured variable (112) within the tube system. The measured variable indicates a gas flow within the tube system. The actuatable inhalation valve or exhalation valve is arranged and configured to make possible a flow of a breathing gas from a ventilation circuit (107) of the ventilator. The control unit regulates a ventilation pressure provided by the ventilator via the at least one sensor element and the at least one inhalation valve or exhalation valve such that a predefined maximum pressure is not exceeded in a predefined area (140) of the tube system.

LEAK DETERMINATION IN A BREATHING ASSISTANCE SYSTEM

Systems and methods for estimating a leak flow in a breathing assistance system including a ventilation device connected to a patient are provided. Data of a flow waveform indicating the flow of gas between the ventilation device and the patient is accessed. A specific portion of the flow waveform is identified, and a linear regression of the identified portion of the flow waveform is performed to determine an estimated leak flow in the breathing assistance system. 123.-. (canceled)24. A ventilation device for delivering respiratory gases to a patient , the ventilation device having a controller operative to:monitor a flow of gas between the ventilation device and the patient, wherein the monitored flow of gas is represented by a flow waveform;determine a first flow rate for a first period of the flow waveform;determine a second flow rate for at least a second period of the flow waveform;when the second flow rate varies from the first flow rate by less than a defined percentage, define a steady phase portion of the flow waveform to include the first period and the second period;determine an estimated leak flow based on the steady phase portion of the flow waveform; andbased on the estimated leak flow, determine a leak factor adapted to compensate for the estimated leak flow.25. The ventilation device of claim 24 , wherein the leak factor is used to calculate a patient flow.26. The ventilation device of claim 25 , wherein the patient flow is compared to a flow value measured by a flow sensor.27. The ventilation device of claim 24 , wherein the estimated leak flow is used to calculate a tidal volume.28. The ventilation device of claim 24 , wherein the estimated leak flow is used to determine an end of an inspiration phase.29. The ventilation device of claim 24 , wherein the estimated leak flow is determined over a plurality of breath cycles claim 24 , and wherein the estimated leak flow is displayed on a user interface for the plurality of breath cycles.30. The ...

DEVICE FOR DELIVERING HYDROGEN TO A SUBJECT

There is provided herein devices for delivering hydrogen to a subject comprising a flow path including a breather bag and an inhalation outlet for engagement with the subject respiratory system; and a breathing gas supply source comprising hydrogen gas and in fluid communication with the flow path. Also provided are devices for the cutaneous delivery of hydrogen. 1. A device for delivering hydrogen to a subject comprising:a. a flow path including a breather bag and an inhalation outlet for engagement with the subject respiratory system; andb. a breathing gas supply source comprising hydrogen gas and in fluid communication with the flow path.2. The device of claim 1 , further comprising a controller system for controlling a level of hydrogen in the device and/or delivered to the subject.3. The device of claim 2 , wherein the level of hydrogen is maintained at about 4% or less.4. The device of claim 2 , wherein the controller system comprises a hydrogen sensor.5. The device of claim 2 , wherein the controller system further controls a level of oxygen in the device and/or delivered to the subject.6. The device of claim 2 , wherein the controller system further comprises an oxygen sensor.7. The device of claim 2 , wherein the controller system further controls a level of COin the device and/or delivered to the subject.8. The device of claim 2 , wherein the controller system further comprises a COsensor.9. The device of claim 1 , wherein the breathing gas supply source generates hydrogen using electrolysis.10. The device of claim 1 , further comprising a COabsorber disposed along the flow path.11. The device of claim 1 , further comprising a suction disposed along the flow path for venting excess gas and/or exhaled gas.12. The device of claim 1 , further comprising a source of oxygen in fluid communication with the flow path.13. The device of claim 1 , wherein the inhalation outlet comprises a nose and mouth mask.14. The device of claim 1 , wherein the inhalation outlet ...

System and Method for Real-Time Carbon Dioxide and Pressure Sensing to Verify Placement of Tube in Airway or Esophagus

A catheter sensor assembly for use in conjunction with electronic catheter guidance systems is provided and includes a catheter and a sensor. The catheter extends in a longitudinal direction and has a proximal end and a distal end that define a lumen therebetween. Further, the catheter is configured for placement within a digestive tract or respiratory tract of a patient. The sensor includes a carbon dioxide sensor, pressure sensor, or both, and can be located in an air sampling chamber connected to the catheter. The sensor can communicate with a processor to deliver carbon dioxide and/or pressure readings to a display device, which can indicate placement of the catheter in the digestive tract or in the respiratory tract. A catheter guidance system and a method for accurately placing a is also provided.

SPRAY DELIVERY DEVICE

There is disclosed a device for delivering a fluid spray to a mouth of a user, either directly, or via a flow conductor such as a tube or pipe. The spray device uses a vibrating perforate membrane to create the spray and the vibration of the membrane is controlled in response to input from a flow rate sensor which detects a flow rate through the device or through the flow conductor. There is further disclosed a corresponding method of controlling a spray head in a spray delivery device. 1. A spray delivery device for delivering a fluid spray to a fluid flow conductor , comprising:a spray generator,a spray controller; andan air flow sensor;wherein the spray generator comprises a perforate membrane and actuation means configured to ultrasonically vibrate the perforate membrane in response to a drive signal from the spray controller, such that vibration of the perforate membrane causes liquid droplets to be ejected from an ejection side of the perforate membrane; andwherein the flow sensor is configured to provide a flow signal representative of an air flow rate through the flow conductor, such that the spray controller can modulate a spray rate of the spray generator in response to the sensed air flow rate.2. A device according to claim 1 , wherein the flow signal is proportional to the air flow rate.3. A device according to claim 1 , wherein the flow signal is proportional to a function of the air flow rate.4. A device according to claim 1 , wherein the spray controller is configured to generate no spray when the sensed air flow is below a predetermined threshold value.5. A device according to claim 1 , wherein the spray controller is configured to modulate the drive signal using time based modulation.6. A device according to claim 1 , wherein the spray controller is configured to modulate the drive signal by amplitude based modulation.7. A device according to claim 1 , wherein the spray controller is configured to modulate the drive signal by shifting a frequency of ...

MANUAL VENTILATION FEEDBACK SENSOR FOR USE IN CLINICAL AND TRAINING SETTINGS

A manual ventilation feedback sensor for use in clinical and training settings is disclosed. Namely, a manual resuscitator device is disclosed that comprises a bag valve mask, a one-way valve, a manual ventilation bag, and a sensing module, wherein the sensing module can comprise a pressure sensor and/or flow transducer. Sensing module may further comprise a controller for processing information from the pressure sensor and/or flow transducer; namely for determining and indicating a ventilation rate. Indicators are provided to guide the user with respect to a target or desired ventilation rate. 1. A manual resuscitator device comprising a bag valve mask , a manual ventilation bag , and a pressure sensor or flow transducer , wherein the pressure sensor or flow transducer is positioned in line between the bag valve mask and the manual ventilation bag or at a pressure port of the manual ventilation bag , and wherein the pressure sensor or flow transducer is contiguous with a passage way of air flow from the manual ventilation bag to the bag valve mask , such that the pressure sensor or flow transducer is capable of measuring a streaming pressure or air flow output value between the manual ventilation bag and the bag valve mask , wherein the streaming pressure or air flow output value is indicative of a ventilation rate of the device.2. The manual resuscitator device of claim 1 , further comprising an end tidal COsensor claim 1 , wherein the end tidal COsensor is configured to be in line with the pressure sensor or flow transducer.3. The manual resuscitator device of claim 1 , wherein the pressure sensor or flow transducer is encased in a housing.4. The manual resuscitator device of claim 3 , wherein the housing comprises a sealed compartment in which the pressure sensor or flow transducer is contiguous with airflow circuit claim 3 , but does not interrupt the airflow.5. The manual resuscitator device of claim 1 , wherein the pressure sensor or flow transducer is in ...

SYSTEM AND METHOD FOR CONTROLLING INSUFFLATION PRESSURE DURING INEXSUFFLATION

The present disclosure pertains to a system and method for controlling insufflation pressure during inexsufflation of a subject. The system inexsufflates the subject such that tidal flow and/or tidal volume are monitored during insufflation, and insufflation pressure is adjusted to maintain the flow rate of the pressurized flow of breathable gas until a target tidal volume is reached for the insufflation. When the target tidal volume has substantially been reached, the system is causes gas to be evacuated from the airway of the subject. This may provide for more precise, customized therapy for the subject than is provided by conventional inexsufflation systems in which inspiratory flow may not be monitored and/or controlled. In one embodiment, the system comprises one or more of a pressure generator, a subject interface, one or more sensors, a processor, a user interface, electronic storage, and/or other components. 1. A system configured to inexsufflate a subject , the system comprising:a pressure generator configured to generate and control delivery of a pressurized flow of breathable gas to an airway of the subject;one or more sensors configured to generate output signals conveying information related to one or more gas parameters of the pressurized flow of breathable gas; andone or more processors configured to execute computer program modules, the computer program modules comprising:a target module configured to obtain a target tidal flow rate and a target tidal volume, to determine when the target tidal volume has been reached during an individual insufflation based on the output signals, to monitor a tidal flow rate based on the output signals, and to compare the monitored tidal flow rate with the target tidal flow rate; anda control module configured to control the pressure generator, based on the output signals, to control an insufflation pressure of the pressurized flow of breathable gas during an insufflation of the subject to maintain the flow rate of ...

System and method for accurate estimation of intentional and unintentional leaks in flow generation systems

In one embodiment, a method for accurate leak estimation in a flow generation system includes measuring a total flow through the flow generation system, measuring a pressure in in the primary flow circuit of the flow generation system, determining when the measured pressure is within a predetermined threshold of EPAP, and calculating an intentional leak flowrate and an unintentional leak flowrate based on the relationship Q FS (t)=Q IL (t)+Q UL (t) when the measured pressure is within the predetermined threshold. In another embodiment, a flow generation system includes in one embodiment an airflow generator connected in-line to a flow sensor, a pressure sensor and a patient interface connection by a first gas flow circuit, and a controller electrically coupled to the airflow generator, the flow sensor and the pressure sensor.

DEVICE AND METHOD FOR DETERMINING AN INFORMATION RELATING TO A TREATMENT

The present invention pertains to a device and corresponding method for determining information relating to the treatment of a patient, preferably relating to a patient having a respiratory disorder. The device comprises a fluid channel configured to be in fluid communication with a medical gas source at a first end and with a patient interface at a second end, a sensor arrangement having at least a first sensor for measuring a value of a first flow parameter in the channel and a second sensor for measuring a value of a second flow parameter in the channel, wherein the first sensor and the second sensor are spaced apart from each other along a longitudinal axis of the channel, and a control unit in communication with the first sensor and the second sensor. The control unit determines flow direction of a medical gas in the channel based on sensor measurements. 1. Device for determining information relating to an adherence of a patient having a respiratory disorder , comprising:a fluid channel configured to be in fluid communication with a medical gas source at a first end and with a patient interface at a second end,a sensor arrangement having at least a first sensor for measuring a value of a first flow parameter in said channel and a second sensor for measuring a value of a second flow parameter in said channel, anda control unit in communication with the first sensor and the second sensor, wherein the control unit is configured to determine a flow direction of a medical gas in the channel based on a received measurement of the first sensor and/or second sensor and to determine the information based on the determined flow direction wherein the first sensor and the second sensor are spaced apart from each other along a longitudinal axis of the channel and are arranged at opposing ends of the channel, wherein the device is configured such that either end of the channel is configured to be coupled to a medical gas source or a patient interface, wherein the determined ...

NON-INVASIVE ESTIMATION OF INTRAPLEURAL PRESSURE

Systems and methods for non-invasively estimating intrapleural pressure and muscle pressure are disclosed. The disclosed estimation of intrapleural pressure functions in the presence of a leak and/or leak-compensated flow and does not require a maneuver. In examples, the muscle pressure is represented as a muscle pressure model with model parameters that are unique from breath to breath. An equation of motion relates the muscle pressure, respiratory mechanics, and measured ventilation data (e.g., airway pressure and flow). Based on past measured ventilation data, values for the respiratory mechanics and the model parameters are estimated. Constraints may be set on these values. An intrapleural pressure profile may be generated for past inhalation phases, based on the past measured ventilation data and the estimated model parameters and/or the estimated respiratory mechanics. The estimated respiratory mechanics may be used for real-time estimates of intrapleural pressure with real-time ventilation data. 1. A method for delivering ventilation , the method comprising:receiving a support setting identifying an amount of proportional assistance to provide to the patient;receiving a set of measurements, the set of measurements including at least one airway pressure and at least one flow measurement;based on the set of measurements, estimating a lung compliance and a lung resistance, without using a hold maneuver;receiving a real-time airway pressure and a real-time flow for a current breath;based on the real-time airway pressure, the real-time flow, the estimated lung compliance, and the estimated lung resistance, estimating at least one of a real-time intrapleural pressure or a real-time muscle pressure; anddelivering ventilation to the patient based on the support setting and the at least one of the real-time intrapleural pressure or the real-time muscle pressure.2. The method of claim 1 , wherein the set of measurements includes a first subset of measurements from a ...

Automatic positive pressure breathing apparatus

An automatic positive pressure breathing apparatus is provided, applicable to connect an upper respiratory tract of a user, which includes a gas generator, a gas flow sensing device, a humidification device, a heating device, a breathing tube, and a mask device. The gas generator includes a signal processing module and a filter. Wherein the signal processing module includes a control circuit and the filter is embedded in the gas generator. The first connecting end of the gas flow sensing device is positioned at one end of the gas flow sensing device and is connected to one side of the gas generator. The second connecting end is positioned at the other end of the gas flow sensing device. The gas flow sensing device includes a first pressure sensing element, a second pressure sensing element, and a radial structure.

DEVICE FOR VENTILATING A PATIENT AND PROCESS FOR THE OPERATION OF THE DEVICE

A patient module () is intended for use when ventilating a patient with a pressure source () that can be fluidically coupled via the patient module () to a patient interface (), which can be connected to the airways of a patient. The patient module () includes a housing () and a valve section () in the housing () as well as an HME filter () spaced apart from the valve section (). The HME filter () is located upstream of the valve section () in relation to an expiratory volume flow, so that the HME filter () divides an interior of the housing () into a dry area and an area coming into contact with the moisture carried along by the exhaled breathing gas. The valve section () is located in the dry area. A process for operating the patient module () includes calibration steps. 1. A patient module for ventilating a patient , the patient module comprising:a housing with an input for fluidic connection of a pressure source and an output for fluidic connection to a patient interface, which can be connected to the airways of a patient to provide an inhalation volume flow path to the patient interface and an expiratory volume flow path from the patient interface;a valve section in the housing;a heat moisture exchange (HME) filter in the housing and spaced apart from the valve section, the HME filter being located upstream of the valve section in relation to an expiratory volume flow.2. A patient module in accordance with claim 1 , wherein the valve section comprises a plurality of exhalation valves.3. A patient module in accordance with claim 2 , wherein:the valve section further comprises a central inhalation valve; andthe exhalation valves are arranged uniformly distributed about the central inhalation valve within the valve section.4. A patient module in accordance with claim 1 , wherein the valve section comprises at least one inhalation valve.5. A patient module in accordance with claim 1 , further comprising a particle filter arranged between the HME filter and the ...

Clinical Decision Support System and Methods

The present invention provides clinical decision support that can be used with non-portable and portable systems when delivering and/or monitoring delivery of a therapeutic gas comprising nitric oxide to a patient. Further, clinical decision support can be used with non-portable and portable systems during delivery and/or monitoring of delivery of therapeutic gas when nebulized drugs may and/or may not be being delivered to a patient (e.g., when nebulizers are delivered upstream in the inspiratory limb of the breathing circuit, into a breathing gas delivery system, etc.). 1. A computer implemented method of providing clinical decision support to users of a therapeutic gas delivery system , the method comprising:storing, in processor readable memory accessible by processors of a therapeutic gas delivery system, logic based information for a nebulizer mode;displaying, in a graphical user interface of the therapeutic gas delivery system, an option to activate a nebulizer mode;receiving, via input in the graphical user interface and storing in processor readable memory, run information including start nebulizer mode information and duration run nebulizer mode information;processing, using processors of the therapeutic gas delivery system, the logic based information for nebulizer mode and the run nebulizer mode information thereby starting nebulizer mode, wherein when nebulizer mode starts sampling stops for a duration of time based on the received duration run nebulizer mode information; anddisplaying, in a graphical user interface of the therapeutic gas delivery system, delivery information indicating delivery of therapeutic gas when sampling has stopped.2. The method of claim 1 , wherein the delivery information is provided in a bar graph indicating that over delivery claim 1 , under delivery claim 1 , or appropriate delivery.3. The method of claim 1 , wherein the delivery information is comprising concentration information in parts per million (PPM).4. The method of ...

Nasal pillows with high volume bypass flow and method of using same

A fan unit which in use forms part of a gases supply unit, the gases supply unit suitable for use as part of a system for providing heated humidified gases to a user, the fan unit having a casing that has an inlet aperture and an outlet passage, the outlet passage including an exit aperture, the fan unit also including a fan which is located inside the casing and which is adapted for connection to a motor to drive rotation of the fan in use, the fan drawing gases into the casing via the inlet aperture, and forcing these gases out of the casing via the outlet passage as a gases stream, the outlet passage further including at least one bypass vent hole independent of the exit aperture and arranged at an angle to the path of the gases stream through the outlet passage.

Ventilation devices and systems and methods of using same

A ventilation system having a mask, a blowing assembly, and a processor. The mask has a mask body and a pressure sensor operatively associated with the mask body and configured to measure pressure within the mask. The mask body defines an inlet opening and a plurality of leak openings. The blowing assembly is positioned in fluid communication with the inlet opening of the mask body and configured to direct air to the inlet opening of the mask body. The processor is positioned in operative communication with the blowing assembly and the pressure sensor of the mask. The processor is configured to selectively control the blowing assembly based upon at least the measured pressure within the mask.

INSPIRATORY SYNTHESIS OF NITRIC OXIDE

A system for generating nitric oxide can include an apparatus positioned in a trachea of a mammal, the apparatus in eluding a respiration sensor for collecting information related to one or more triggering events associated with the trachea, an oxygen sensor for collecting information related to a concentration of oxygen in a gas, and one or more pairs of electrodes for initiating a series of electric arcs to generate nitric oxide, and the system for generating nitric oxide can also include a controller for determining one or more control parameters based on the information collected by the respiration sensor and the oxygen sensor, wherein the series of electric arcs is initiated based on the control parameters determined by the controller. 147.-. (canceled)48. An apparatus comprising:a reaction chamber including one or more pairs of electrodes configured to generate a series of electric arcs to synthesize a reactant gas containing at least nitrogen and oxygen to a product gas containing nitric oxide, the reaction chamber being at least partially positioned within a tube into which the product gas is delivered;a sensor configured to measure one or more characteristics of a flow of a gas in the tube; and{'sub': '2', 'a controller in communication with the one or more pairs of electrodes and the sensor, the controller being configured to initiate the series of electric arcs based on the one or more characteristics of the flow of the gas in the tube to minimize a concentration of NOin the product gas.'}49. The apparatus of claim 48 , wherein the one or more pairs of electrodes include a noble metal.50. The apparatus of claim 48 , wherein the one or more pairs of electrodes include iridium.51. The apparatus of claim 48 , wherein the one or more characteristics include at least one of a direction of the flow of the gas claim 48 , a tidal volume of the flow of the gas claim 48 , a timing of the flow of the gas claim 48 , a change in temperature of the flow of the gas ...

CONDUIT CONNECTOR FOR A PATIENT BREATHING DEVICE

In an embodiment, a connector or connector assembly for attaching a nasal cannula with a gas delivery hose includes a sensor port for a sensor probe positioned near an end of a nasal cannula, which can allow the sensor probe to be placed closer to the patient's nostrils than previous connector parts allowed. The connector can be configured to advantageously allow the nasal cannula to rotate relative to the gas delivery hose, thereby allowing a patient or healthcare provider to untangle or otherwise straighten the hose or the cannula. The connector assembly can be configured to automatically align locking protrusions on a first component with locking recesses on a second component, where insertion of the second component within the first component causes the second component to rotate relative to the first component, thereby aligning the locking protrusions with associated locking recesses. 120-. (canceled)21. A connector assembly for a gas delivery conduit of a respiratory system , the respiratory system configured for providing respiratory gases to a patient , the connector assembly comprising:a sensor probe configured to measure one or more parameters of a gases flow through the connector assembly and provide an electrical signal indicative of at least one parameter of the gases flow to a respiratory control system;a gas delivery conduit configured for providing at least a portion of a gases pathway between a gas source and patient interface; anda connector connected to at least one end of the gas delivery conduit, the connector comprising a connector body, and at least one receptacle on the connector body, the at least one receptacle comprising a channel for receiving the sensor probe, wherein the connector is configured to removably couple the gas delivery conduit to a corresponding connector of a second gas delivery conduit.22. The connector assembly of claim 21 , wherein the at least one channel extends partially claim 21 , or wholly claim 21 , within an ...

Inhalation device with cylindrical rotatable dial for input of a target amount of inhaled substance

An inhalation device for e.g., nicotine products which receives a user input regulating the amount of nicotine the user wants to receive. Once the selected amount has been delivered to the user, the device shuts off its atomizer to conclude operation.

ANESTHESIA APPARATUS OR VENTILATOR WITH A HOT WIRE SENSOR, HOT WIRE SENSOR AND HOT WIRE SENSOR MODULE FOR A HOT WIRE SENSOR

A medical device, for example, an anesthesia apparatus or ventilator, including a hot wire sensor (); a hot wire sensor () and a hot wire module () for a hot wire sensor () are provided. A first hot wire and a second hot wire (), namely, a measuring wire () and a compensation wire (), are connectable to the hot wire sensor (), for example, in the form of a hot wire module (), in an electrically conductive manner. A first contact pair () is associated with the measuring wire () for contacting same and a second contact pair () is associated with the compensation wire () for contacting same. The contacts of the second contact pair () are configured as leading contacts in relation to at least one of the contacts of the first contact pair (). 1. A hot wire sensor comprising a hot wire module which can be connected to a circuit of the hot wire sensor in an electrically and mechanically detachable manner , wherein the hot wire module comprises:a first hot wire comprising a measuring wire;measuring wire contacts for the electrically conductive connection of the measuring wire to the circuit of the hot wire sensor;a second hot wire comprising a compensation wire; andcompensation wire contacts for the electrically conductive connection of the compensation wire to the circuit of the hot wire sensor, the compensation wire contacts forming a part of a chronological contact means for chronologically electrically connecting the contacts of the compensation wire prior to connecting the contacts of the measuring wire.2. A hot wire sensor according to claim 1 , wherein the chronological contact means is formed with the compensation wire contacts configured as leading contacts in relation to at least one of the measuring wire contacts for an electrically conductive connection of the compensation wire to the circuit in advance of an electrically conductive connection of the measuring wire to the circuit.3. A hot wire module for an electrically and mechanically detachable connection to ...

TEXTILE TUBE FOR A THERAPY DEVICE

An air circuit for use in an air therapy device that is lightweight and comfortable for a user that is configured to also limit air leakage. The air circuit may include a tubular structure formed from various textile structures including circular weaving, circular knitting, braiding and other structures. 1. An apparatus for providing positive pressure respiratory therapy to a patient breathing in a respiratory cycle including an inhalation portion and an exhalation portion , said apparatus comprising:a controllable motor-blower configured to generate a supply of air at a positive pressure relative to ambient pressure by rotating an impeller at an impeller speed,a housing holding said motor-blower, the housing comprising an inlet and a patient-connection port, the patient-connection port being structured to communicate said supply air at said positive pressure from the motor-blower to a patient interface via an air circuit in use;a sensor to monitor at least one of pressure and a flow rate of the supply of air at positive pressure and to generate a sensor output; anda controller configured to adjust an operating parameter of said motor-blower in accordance with said sensor output to maintain a minimum positive pressure in said patient interface during a treatment session by causing an increase in the impeller speed during the inhalation portion of the respiratory cycle and causing a decrease in the impeller speed during the exhalation portion of the breathing cycle, a tubular structure;', 'the tubular structure having a circular woven structure; the tubular structure being seamless along a length of the tubular structure;', 'the tubular structure including a plurality of warp threads and a plurality of weft threads;', 'the plurality of weft threads including a first monofilament weft thread and a second monofilament weft thread;', 'the first monofilament weft thread being located adjacent to at least one non-monofilament weft thread, the second monofilament weft ...

DISTINGUISHING CLOSED AND OPEN RESPIRATORY AIRWAY APNEAS BY COMPLEX ADMITTANCE VALUES

Methods and apparatus are disclosed for determining the occurrence of a closed or open apnea. Respiratory air flow from a patient is measured to give an air flow signal. The determination of an apnea is performed by applying an oscillatory pressure waveform of known frequency to a patient's airway, calculating a complex quantity representing a patient admittance () and comparing its value with ranges () indicative of open or closed apneas. The method distinguishes open from closed apneas even when the model used to calculate admittance is not based on details of the respiratory apparatus. In addition the patient admittance may be compared with admittance during normal breathing to avoid having to characterize the airway. 1. (canceled)2. A method for distinguishing between closed and open respiratory apneas in a patient using a CPAP apparatus having a mask and a flow generator comprising:applying, by the flow generator, a pressure having an oscillatory component to the patient's airway,computing an oscillatory component of pressure at the mask,computing an oscillatory component of the respiratory air flow of the patient using the oscillatory component of pressure at the mask,computing a complex patient admittance from the oscillatory component of pressure and the oscillatory component of the respiratory air flow, andcomparing the complex patient admittance to values representative of closed or open apneas to distinguish between closed and open apneas.3. The method of claim 2 , wherein computing an oscillatory component of pressure at the mask uses an air flow signal representing a flow rate of air being generated by the flow generator claim 2 , and a pressure signal representing a pressure of air being generated by the flow generator.4. The method of claim 3 , wherein computing an oscillatory component of pressure at the mask uses a two-port network model.5. The method of claim 3 , wherein computing an oscillatory component of pressure at the mask uses a hose ...

A USER INTERFACE AND SYSTEM FOR SUPPLYING GASES TO AN AIRWAY

The invention relates to a respiratory system comprising a first patient interface for delivery of a first flow of gases to a patient, a second patient interface for delivery of a second flow of gases to the patient, and a device and/or sensing arrangement that is configure to facilitate a switching of the system between a first respiratory mode where the device allowing delivery of the first flow of gases to an outlet of the first patient interface when the second patient interface is absent from the patient, and a second respiratory mode where the device reducing or stopping delivery of the first flow of gases to the outlet of the first patient interface when the second patient interface is located together with the first patient interface upon the patient. 1. A respiratory apparatus for providing respiratory support to a patient , the apparatus comprising:a nasal interface and a gas conduit for delivering a flow of gases to an outlet of the nasal interface, and a device and/or a sensing arrangement adapted to configure the apparatus between a first configuration for providing a first level of the flow of gases to the outlet and a second configuration for providing a second level of the flow of gases to the outlet, the second level less than the first level, wherein the device and/or the sensor arrangement is located at the nasal interface or at or near to a patient end of the conduit.2. A respiratory apparatus for providing respiratory support to a patient , the apparatus comprising:a nasal interface and a gas conduit for delivering a flow of gases to an outlet of the nasal interface, and a device adapted to configure the gas conduit between a first configuration for providing a first level of the flow of gases to the outlet and a second configuration for providing a second level of the flow of gases to the outlet, the second level less than the first level,a sensing arrangement comprising a first pressure sensor located downstream of the device, and a second ...

SYSTEMS AND METHODS FOR TRACKING SPONTANEOUS BREATHING IN A MECHANICALLY VENTILATED PATIENT

There is provided system for monitoring spontaneous breathing of a mechanically ventilated target individual, comprising: a feeding tube for insertion into a distal end of an esophagus of the individual, sensor(s) disposed on the feeding tube at a location such that the sensor(s) is located at the distal end of the esophagus of the individual when the feeding tube is in use, wherein the sensor(s) is positioned for sensing values by contact with the tissue of the esophagus including a lower esophageal sphincter (LES) and/or tissue in proximity to the LES, and code for computing an indication of a frequency band of diaphragm movement of the individual according to an analysis of values sensed by the sensor(s), and for adjustment of parameter(s) of a mechanical ventilator for mechanically ventilating the individual, wherein the instructions for adjustment are computed while the feeding tube is in use. 1. A system for monitoring spontaneous breathing of a mechanically ventilated target individual , the system comprising:a feeding tube for insertion into a distal end of an esophagus of the mechanically ventilated target individual;at least one sensor disposed near the distal end of the feeding tube at a location such that the at least one sensor is located at the distal end of the esophagus of the target individual when the feeding tube is located within the esophagus and in use, wherein the at least one sensor is positioned for sensing values by contact with the tissue of the esophagus including at least one of a lower esophageal sphincter (LES) and tissue in proximity to the LES; anda non-transitory memory having stored thereon a code for execution by at least one hardware processor of a computing device, the code comprising code for computing an indication of a frequency band of diaphragm movement of the mechanically ventilated target individual according to an analysis of values sensed by the at least one sensor, and computing instructions for adjustment of at least ...

METHODS AND APPARATUS FOR FLOW THERAPY

A method of estimating respiratory demand of a patient being administered flow therapy comprising: administering a gas flow rate to the patient through both nostrils using a flow therapy apparatus with a patient interface for each nostril, measuring a parameter associated with that nostril, the parameter being one or more of: respiratory demand of that nostril, indicative of respiratory demand of that nostril, or a parameter from which respiratory demand of that nostril can be derived, determining respiratory demand (or parameter indicative of respiratory demand) for the patient from the nostril parameter for each nostril. 1. A method of estimating respiratory demand of a patient being administered flow therapy comprising:administering a gas flow rate to the patient through both nostrils using a flow therapy apparatus with a patient interface respiratory demand of that nostril,', 'indicative of respiratory demand of that nostril, or', 'a parameter from which respiratory demand of that nostril can be derived,, 'for each nostril, measuring a parameter associated with that nostril, the parameter being one or more ofdetermining respiratory demand (or parameter indicative of respiratory demand) for the patient from the nostril parameter for each nostril.2. A method according to wherein respiratory demand is:inspiratory demand, and/orexpiratory demand3. A method according to or wherein the parameter associated with each nostril is pressure of the nasal passage for that nostril and/or a pressure of a conduit leading to the nasal passage of that nostril.4. A method according to wherein the respiratory demand for the patient is determined by:combining the pressure of the nasal passage for each nostril, and using a relationship to determine an offset flow rate or respiratory demand flow rate for the patient using the combined pressure, and/orusing a relationship, determining and combining an offset flow rate or respiratory demand flow rate for each nostril using the nasal ...

Oxygen concentrator systems and methods

Described herein are various embodiments of an oxygen concentrator system. In some embodiments, oxygen concentrator system includes one or more components that improve energy usage during operation of the oxygen concentrator system.

Vapor prediction model for a vaporizer device

Features relating to a model that predicts an amount of vapor production of a vaporizable material from a vaporizer device are provided. The model, for example a machine learning model and/or a statistical model, is developed as a function of various factors relating to operation of the vaporizer device. The model may be integrated in a system to provide user control and visibility into the amount of vapor production. In accordance with implementations of the current subject matter, an amount of consumed vapor may be determined. Such determination advantageously allows for a user to be informed of an amount consumed as well as optionally limit or otherwise control an amount consumed.

THERMISTOR FLOW SENSOR HAVING MULTIPLE TEMPERATURE POINTS

A gases flow rate sensing system may be configured to operate in at least two different target temperature modes, based upon a measured temperature of the gases flow. In some embodiments, the gases flow sensing system may have a voltage divider containing a thermistor. The gases flow rate may be determined based upon a voltage output indicating an amount of power needed to maintain the thermistor at a target temperature as specified by the target temperature mode, and a measured temperature of the gases flow.

Two-way communications in a medical device

A respiratory therapy system for providing continuous positive air pressure (CPAP) to a patient may include a flow generator for generating a supply of breathable gas, a sensor to measure a physical quantity while the breathable gas is supplied, and a computing device. The computing device may be configured to: receive sensor data that is based on measured physical property of the supply of breathable gas; control the flow generator to adjust a property of the supply of breathable gas; display a question and a plurality of selectable responses; receive a first input selecting one of the selectable responses; and display a coaching response corresponding to the selected response.

Humidifier reservoir

A reservoir configured to retain a volume of liquid for use in an apparatus for humidifying a flow of pressurised air comprises a base portion and a lid portion. The reservoir may be configured to improve its level of thermal contact to the heater plate using the flow of pressurised air. The reservoir may be configured to improve thermal contact between the reservoir and the heater plate by pre-compression upon engagement of the reservoir with the humidifier. The reservoir may comprise a removable intermediate portion, which may include the inlet tube and/or the outlet tube, for improved access for cleaning. The reservoir may also be configured to prevent overfilling. Overfill prevention features in the reservoir may include defined flow egress paths and/or formation of air locks.

DESIGN AND IMPLEMENTATION OF A LOW-COST BREATHING SUPPORT DEVICE

Respiratory diseases affect a large part of world population, especially in developing world. In this invention, we present a breathing support system to provide life-saving support to such patients. The system automates and regulates the use of a bag valve mask (commonly known as an ambu bag). The system uses mechanical actuators, sensors and a smart feedback control mechanism to automate and regulate the operation of the ambu bag to implement core functions of mechanical ventilation for life-saving applications. The system can also be used to provide better breathing support to newborns (e.g. to prevent hypoxia). The system can be used to save hundreds of thousands of lives in the developing world, in emergencies and during transportation globally. 1. A breathing support device comprising ,a system control unit that receives information from a sensing unit and commands from a user and generates signals to control a mechanical actuation unit;wherein, the mechanical actuation unit moves a gas volume generator to generate the desired breathing pattern;wherein the gas volume generator stores air, oxygen or their mixture for current breathing cycle;wherein the sensing unit comprises of gas flow and pressure sensors to ensure safe and effective operation of the breathing cycle;a power management unit to power the system using either an alternating current source or direct current source;a user-interface unit to get desired breathing parameters from medical practitioners and to display system status.2. The system control unit of claim 1 , further comprising a microcontroller to process signal from different sensors and to generate commands to control mechanical actuation unit.3. The mechanical actuation unit of claim 1 , further comprising a pair of rounded jaws that are moved by an electrical motor through a gear assembly consisting of two gears.4. The mechanical actuation unit of claim 1 , further comprising a pair of rounded jaws that are move to-and-fro by rack-and- ...

MANUAL VENTILATION FEEDBACK SENSOR FOR USE IN CLINICAL AND TRAINING SETTINGS

A manual ventilation feedback sensor for use in clinical and training settings is disclosed. Namely, a manual resuscitator device is disclosed that comprises a bag valve mask, a one-way valve, a manual ventilation bag, and a sensing module, wherein the sensing module can comprise a pressure sensor and/or flow transducer. Sensing module may further comprise a controller for processing information from the pressure sensor and/or flow transducer; namely for determining and indicating a ventilation rate. Indicators are provided to guide the user with respect to a target or desired ventilation rate. 1. A manual resuscitator device comprising a bag valve mask , a manual ventilation bag , and a pressure sensor or flow transducer , wherein the pressure sensor or flow transducer is positioned in line between the bag valve mask and the manual ventilation bag or at a pressure port of the manual ventilation bag , and wherein the pressure sensor or flow transducer is contiguous with a passage way of air flow from the manual ventilation bag to the bag valve mask , such that the pressure sensor or flow transducer is capable of measuring a streaming pressure or air flow output value between the manual ventilation bag and the bag valve mask , wherein the streaming pressure or air flow output value is indicative of a ventilation rate of the device.2. The manual resuscitator device of claim 1 , further comprising an end tidal COsensor claim 1 , wherein the end tidal COsensor is configured to be in line with the pressure sensor or flow transducer.3. The manual resuscitator device of claim 1 , wherein the pressure sensor or flow transducer is encased in a housing.4. The manual resuscitator device of claim 3 , wherein the housing comprises a sealed compartment in which the pressure sensor or flow transducer is contiguous with airflow circuit claim 3 , but does not interrupt the airflow.5. The manual resuscitator device of claim 1 , wherein the pressure sensor or flow transducer is in ...

Secure electronic vaporizer and nebulizer systems

Methods and systems are described herein for fluid handling and dispensing liquid substances using vaporization or nebulization in a controlled, safe manner. A dispensing device may be configured to receive one or more cartridges storing different types of vaporizable or nebulizable substances. A controller may be provided to regulate the amount of a given substance dispensed over a defined time period. Optionally, in response to detecting tampering of the dispensing device and/or a liquid cartridge the dispensing device may be disabled and/or a liquid stored in a substance cartridge may be rendered inert.

SYSTEMS AND METHODS FOR TRACKING SPONTANEOUS BREATHING IN A MECHANICALLY VENTILATED PATIENT

There is provided system for monitoring spontaneous breathing of a mechanically ventilated target individual, comprising: a feeding tube for insertion into a distal end of an esophagus of the individual, sensor(s) disposed on the feeding tube at a location such that the sensor(s) is located at the distal end of the esophagus of the individual when the feeding tube is in use, wherein the sensor(s) is positioned for sensing values by contact with the tissue of the esophagus including a lower esophageal sphincter (LES) and/or tissue in proximity to the LES, and code for computing an indication of a frequency band of diaphragm movement of the individual according to an analysis of values sensed by the sensor(s), and for adjustment of parameter(s) of a mechanical ventilator for mechanically ventilating the individual, wherein the instructions for adjustment are computed while the feeding tube is in use. 1. A system for mechanically ventilating a target individual , the system comprising:a probe for insertion into a distal end of an esophagus of the mechanically ventilated target individual;at least one sensor comprising at least one electrode for sensing impedance values disposed near the distal end of the probe at a location such that the at least one electrode is located at the distal end of the esophagus of the target individual when the probe is located within the esophagus and in use, wherein the at least one electrode is positioned for sensing impedance values when contacting the tissue of the esophagus including at least one of a lower esophageal sphincter (LES) and tissue in proximity to the LES; anda non-transitory memory having stored thereon a code that in response to execution by at least one hardware processor of a computing device, causes the computing device to extract a frequency band of diaphragm movement and a phase of the diaphragm movement of the mechanically ventilated target individual from the impedance values sensed by the at least one electrode ...

Uvc sterilization systems and methods for patient ventilation

A ventilator system includes a gas flow chamber configured to receive ventilation gas circulating in a ventilation gas pathway of the ventilator and at least one UVC lamp. The UVC lamp is configured to radiate UVC spectrum light into the gas flow chamber to inactivate pathogens in the ventilation gas. A flow sensor is configured to measure a gas flow rate of the ventilation gas and a controller is configured to receive the gas flow rate, determine an intensity based on the gas flow rate, and control power to the UVC lamp based on the intensity.

Methods and systems for adaptive base flow and leak compensation

This disclosure describes systems and methods for providing adaptive base flow scheduling during ventilation of a patient to optimize patient-machine synchrony and accuracy of estimated exhaled as well as inhaled tidal volumes. Further, this disclosure describes systems and methods for providing adaptive inspiratory trigger threshold scheduling during the adaptive base flow scheduling. Further still, this disclosure describes systems and methods for determining an estimated leak flow and adjusting the adaptive base flow scheduling and the adaptive inspiratory trigger threshold scheduling based on the estimated leak flow. Moreover, this disclosure describes systems and methods for determining a change in the estimated leak flow and adjusting the adaptive base flow scheduling and the adaptive inspiratory trigger threshold scheduling based on the change in the estimated leak flow.

RESPIRATORY DEVICE

A respiratory device comprises a respirator having a controllable respiratory gas source, a programmable control unit and at least one sensor unit for determining pressure and/or flow of respiratory gas. The control unit controls a respiratory gas source to specify a first respiration pattern. The respiratory device comprises at least two further sensor units, a first sensor unit comprising a plurality of individual sensors for generating and/or measuring electrical potentials and noninvasively determining the electrical impedance of the lungs of a patient, a second sensor unit for noninvasively determining the carbon dioxide supply and a third sensor unit for noninvasively determining the oxygen supply of the patient. The control unit evaluates the measured values of the first, second and third sensor units to determine the instantaneous ventilation of the lungs during the respiration using the first respiration pattern, the instantaneous carbon dioxide supply and the instantaneous oxygen supply. 123.-. (canceled)24. A respiratory device , wherein the device comprises at least one respirator having at least one controllable respiratory gas source and a programmable control unit and at least one sensor unit for determining pressure and/or flow of a respiratory gas , wherein the control unit controls the respiratory gas source to specify a first respiration pattern with respect to pressure , flow , volume , frequency , wherein the respiratory device comprises at least two further sensor units selected from a first sensor unit comprising a plurality of individual sensors configured for generating and/or measuring electrical potentials and noninvasively determining an electrical impedance of lungs of a patient , a second sensor unit configured for noninvasively determining a carbon dioxide supply , and a third sensor unit configured for noninvasively determining an oxygen supply of the patient , and wherein the control unit evaluates (i) measured values of the first ...

SYSTEMS AND METHODS FOR AN INDUCTIVELY HEATED ANESTHETIC VAPORIZER

Methods and systems are provided for delivering anesthetic agent to a patient. In one embodiment, an anesthetic vaporizer includes a vaporizing chamber configured to hold a liquid anesthetic agent; a grid disposed within the vaporizing chamber; and a heating element positioned relative to the vaporizing chamber and configured to increase the temperature of the grid. 1. A system for an anesthesia vaporizer , comprising:a vaporizing chamber configured to hold a liquid anesthetic agent;a grid disposed within the vaporizing chamber; anda heating element positioned relative to the vaporizing chamber and configured to increase the temperature of the grid.2. The system of claim 1 , wherein the heating element is an inductive heating element positioned exterior to the vaporizing chamber and the grid is comprised of metal.3. The system of claim 1 , wherein the grid is fully submerged in the liquid anesthetic agent while the anesthesia vaporizer is operated to deliver anesthetic agent to a patient.4. The system of claim 1 , further comprising a controller storing executable instructions in non-transitory memory that claim 1 , when executed claim 1 , cause the controller to:adjust an amount of power provided to the heating element based on a desired temperature of the grid relative to a measured temperature of the grid and/or a desired temperature of the liquid anesthetic agent relative to a measured temperature of the liquid anesthetic agent.5. The system of claim 4 , wherein the measured temperature of the grid is measured by a temperature sensor coupled to the grid and the measured temperature of the liquid anesthetic agent is measured by a temperature sensor immersed in the liquid anesthetic agent claim 4 , and the desired temperature of the grid is selected from a plurality of preset temperatures stored in memory based on user input.6. The system of claim 4 , wherein the instructions that cause the controller to adjust the amount of power provided to the heating element ...

Systems for anesthetic agent vaporization

Methods and systems are provided for delivering anesthetic agent to a patient. In one embodiment, a liquid anesthetic agent container includes a base region, an interior of the base region configured to hold liquid anesthetic agent, an adapter region, and a capillary force vaporizer (CFV) housed in the adapter region. The adapter region includes a coupling end configured to couple to a patient breathing circuit to supply anesthetic agent vaporized by the CFV to a patient.

A METHOD AND A DEVICE FOR ESTIMATING AN AMOUNT OF A POWDER SHAPED MATERIAL PASSING A BEND IN A FLOW CHANNEL

The present invention provides a method for estimating an amount of a powder shaped material passing a bend in a flow channel, such as how much drug from an inhaler reaches the lungs of a person. The estimation is based on both the flow rate of the inhalation as well as the rate of release of the drug into the flow channel, where the rate or release itself depends on the flow. 19-. (canceled)10. A method for estimating an amount of a powder shaped material passing a bend in a throat of a person , the method comprising the steps of:providing a closed, container comprising a predetermined quantity of the powder-shaped material,opening the container,wherein the method further comprises the steps of:sensing a flow of a gas, caused by an inhalation of the person, through a flow channel comprising the throat, at least part of the gas flow being provided through the opened container,the at least part of the gas flow through the container releasing, during a first time interval, the predetermined quantity of the material into the gas flow in the flow channel,receiving, during the first time interval, information relating to the gas flow, andcalculating, for a number of points of time during the first time interval:a rate of release of the material into the flow channel andan amount of the released material having passed the bend.11. The method of claim 10 , wherein the step of determining the rate of release of the material into the flow channel comprises basing the determination of the rate of release on the actual flow of the gas in the flow channel.12. The method of claim 10 , wherein the calculation of the amount of the released material having passed the bend is based on a comparison of the actual flow in the channel to a first flow interval.13. The method of claim 10 , wherein the calculated amount of material having passed the bend is determined on the basis of the determined rate of release.14. The method of claim 10 , wherein the calculation is terminated when a ...

LUMINOUS RESPIRATORY VENTILATION DEVICE

A respiratory ventilation device—configured to send an airflow, generated by a fan, into a duct that extends between the device and a breathing mask configured to be worn by a user—comprises an air inlet intended to admit air into the device; a fan; and an air outlet configured to be connected to the duct, such that, when the fan is in operation, the air flows from the air inlet successively toward the fan and then toward the air outlet. The device also comprises a flow rate sensor configured to measure a flow rate of air circulating through the device, and/or a pressure sensor configured to measure a pressure between the fan and the air outlet. A control unit is connected to the flow rate sensor and/or to the pressure sensor. The device also includes at least one source of light. 1. A respiratory ventilation device , configured to send an airflow , generated by a fan , into a duct , the duct extending between the device and a respiratory mask , configured to be worn by a user , the device comprising:an air inlet, intended to admit air into the device;a fan;an air outlet, the air outlet being configured to be connected to the duct; a flow sensor, configured to measure a flow rate of air flowing through the device, and/or a pressure sensor, configured to measure a pressure between the fan and the air outlet;', 'a control unit, connected to the flow sensor and/or to the pressure sensor;, 'such that when the fan is operating, air flows, through the device, from the air inlet successively to the fan then to the air outlet;'} the enclosure extending, around a longitudinal axis, between a base and a top;', 'the enclosure comprising a side wall connecting the base and the top, the side wall extending around the longitudinal axis;', 'the enclosure comprising at least one holder, forming a curve, and extending inside the enclosure, around the longitudinal axis, the holder being placed facing the side wall, the holder bearing a plurality of light sources, each light source ...

RESPIRATORY ASSISTANCE APPARATUS

A respiratory assistance apparatus guides gas from a gas supply source to a connection part via an inspiratory pathway. A check valve that allows the gas from the gas supply source to pass to the connection part side and prevents exhaled air discharged from the nose or mouth from flowing into the gas supply source side is arranged on the inspiratory pathway. An expiratory valve is arranged on the inspiratory pathway closer to the connection part than the check valve is, and the expiratory valve is opened to discharge the exhaled air from the inspiratory pathway during expiration. This eases a respiratory load on the patient and reduces contamination of the apparatus. 1. A respiratory assistance apparatus comprising:a gas supply source configured to supply a gas;a connection part that is connected to a nose or mouth and configured to supply the gas thereto;an inspiratory pathway configured to make the gas supply source communicate with the connection part and guide the gas;a backflow prevention mechanism that is arranged on the inspiratory path and configured to allow the gas of the gas supply source to pass to the connection part side and to prevent exhaled air discharged from the nose or mouth via the connection part from flowing into a side of the gas supply source; andan air hole that is formed in a pathway constituting member constituting the inspiratory pathway and configured to discharge the exhaled air, the air hole being formed closer to the connection part than the backflow prevention mechanism is.2. The respiratory assistance apparatus according to claim 1 , wherein the backflow prevention mechanism is a check valve that operates mechanically by using a pressure or flow of the exhaled air.3. The respiratory assistance apparatus according to claim 1 , wherein the backflow prevention mechanism is an actuated valve that operates by using an electrical signal obtained by detecting the exhaled air.4. The respiratory assistance apparatus according to claim 1 , ...

GAS FLOW ALARM

Aspects and embodiments relate to a gas flow alarm apparatus and gas flow alarm method. The apparatus comprises: a device configurable to introduce back pressure into a flow of gas, a supply sensor configured to determine whether gas flow to the device is enabled; a pressure sensor configured to determine whether a flow of gas through the device has developed back pressure; and logic circuitry in communication with the supply sensor and the pressure sensor configured to determine whether gas flow to the device is enabled and whether a flow of gas through the device has developed back pressure and, if not, to activate an alarm condition. Aspects and embodiments can provide a system which operates to warn a user against various adverse conditions in which a flow of therapeutic gas to a patient is required, yet not being provided. 1. The gas flow alarm apparatus comprising:a device configurable to introduce back pressure into a flow of gas;a supply sensor configured to determine whether supply flow to the device is enabled;a pressure sensor configured to determine whether the flow of gas through the device has developed back pressure; determine whether the supply flow to the device is enabled and whether the flow of gas through the device has developed back pressure; and', 'if the supply flow is not enabled or the flow of gas has not developed back pressure, to activate an alarm condition., 'logic circuitry in communication with the supply sensor and the pressure sensor configured to2. The gas flow alarm apparatus according to claim 1 , further comprising an alarm sounder activatable by the alarm condition.3. The gas flow alarm apparatus according to claim 2 , wherein an audible alarm signal is generated by the alarm sounder when the logic circuitry detects a non-zero supply flow and back pressure across the device is not sensed.4. The gas flow alarm apparatus according to claim 3 , wherein the audible alarm signal is generated after the logic circuitry detects the non ...

Breathing control using high flow respiration assistance

High flow therapy is used to treat Cheyne-Stokes respiration and other types of periodic respiration disorders by periodic application of high flow therapy, adjustment of high flow therapy flow rates and/or periodic additions of CO2 or O2 into the air flow provided to the patient.

SYSTEM FOR PNEUMATIC TESTING OF GAS FLOW MODULE AND METHOD OF OPERATION THEREOF

A gas flow monitoring system (A, B, ) for monitoring a patient gas flow and having pressure sensors (), a pneumatic system (), valves (), and a pump (), the system including a controller () configured to: determine whether a test mode is selected; configure the pump and the valves to pressurize at least a portion of the pneumatic system when in a test mode; obtain sensor information indicating pressure within at least a portion of the pneumatic system, when in the test mode; and determine whether a leak test fails based upon at least the sensor information. 1. A gas flow monitoring system for monitoring a patient gas flow and having at least one port , pressure sensors , a pneumatic system , valves , and a pump , the system comprising: configure the pump and the valves to pressurize at least a portion of the pneumatic system when in a test mode;', 'obtain sensor information indicating pressure within at least a portion of the pneumatic system, when in the test mode;', 'determine whether a leak test fails based upon at least the sensor information; and', 'determine whether an accessory is coupled to the at least one port, the accessory including at least one of a patient-type interface or a test-type interface., 'a controller configured to2. The gas flow monitoring system of claim 1 , wherein the controller is configured to render results of the determination indicating whether the leak test has failed.3. The gas flow monitoring system of claim 1 , wherein the at least one port comprises a gas flow portion that is proximal to the patient.4. (canceled)5. The gas flow monitoring system of claim 1 , wherein the controller is configured to determine a type of accessory when it is determined that an accessory is coupled to the at least one port.6. The gas flow monitoring system of claim 1 , wherein the accessory comprises identification information which identifies a type of the accessory.7. The gas flow monitoring system of claim 6 , wherein the controller is configured ...

COMPENSATING FOR DISRUPTIONS IN BREATHING GAS FLOW MEASUREMENT

The present disclosure generally relates to systems and methods for delivery of therapeutic gas to patients, using techniques to compensate for disruptions in breathing gas flow measurement, such as when breathing gas flow measurement is unavailable or unreliable. Such techniques include using historical breathing gas flow rate data, such as moving average flow rates, moving median flow rates and/or flow waveforms. At least some of these techniques can be used to ensure that interruption in therapeutic gas delivery is minimized or eliminated. 1. A nitric oxide gas delivery apparatus for use with a ventilator , the apparatus comprising: a breathing gas flow inlet;', 'a nitric oxide (NO) flow inlet; and', 'a combined breathing gas and NO flow outlet operable to provide a combined flow of breathing gas and NO to a patient, in need thereof;, 'an injector module operable to be placed in fluid communication with a breathing circuit affiliated with the ventilator, the injector module comprisinga breathing gas flow sensor configured to sense breathing gas flow rate;one or more NO flow sensors operable to measure the flow of NO; and a memory operable to track and store historical NO flow rate data by the one or more NO flow sensors; and', 'a processor operable to calculate a historical average NO flow rate from the historical NO flow rate data in a first mode and detect a disruption of breathing gas flow rate data from the breathing gas flow sensor,', 'wherein upon detection of the disruption in breathing gas flow rate data, the controller operates in a backup mode to control a delivery flow rate of the NO based on the historical average NO flow rate., 'a controller comprising2. The apparatus of claim 1 , wherein the controller operating in backup mode controls the delivery flow rate of the NO at the historical average NO flow rate.3. The apparatus of claim 1 , wherein the historical average NO flow rate is referenced to calculate a desired NO flow rate for a new set dose of ...

Ventilation trigger detection method and apparatus, ventilation device

A ventilation trigger detection method performed by a ventilation device is disclosed. The method includes monitoring a ventilation parameter during mechanical ventilation for a user, the ventilation parameter including at least one of an airway pressure and an airway flow, and determining patient-ventilator synchrony during the ventilation according to a change in the ventilation parameter. Furthermore, this disclosure also relates to a ventilation trigger detection apparatus, a ventilation device, and a storage medium.

COUGH ASSISTANCE AND MEASUREMENT SYSTEM AND METHOD

Systems and methods are configured to inexsufflate a subject and provide cough-by-cough feedback during treatment and/or therapy of the subject. Through sensors that are included in the systems, various gas and/or respiratory parameters maybe measured and/or determined in real-time, such as, for example, peak cough flow and/or inspiratory tidal volume. 1. A system configured to in-exsufflate a subject , the system comprising:a pressure generator configured to generate a pressurized flow of breathable gas for delivery to an airway of the subject;a subject interface configured to guide the pressurized flow of breathable gas to the airway of the subject;one or more sensors configured to generate one or more output signals conveying information related to one or more parameters, wherein the one or more parameters include one or both of a gas parameter and/or a respiratory parameter; and a control module configured to control the pressure generator to provide an inexsufflation to the subject; and', 'a parameter determination module configured to determine a peak cough flow parameter during the inexsufflation, wherein the determination is based on the one or more output signals., 'one or more processors configured to execute computer program modules, the computer program modules comprising2. The system of claim 1 , further comprising:an electronic display configured to display information; andan interface module configured to control the electronic display such that the displayed information is based on the peak cough flow parameter.3. The system of claim 1 , wherein the determination of the peak cough flow parameter includes compensation for a part of the subject interface disposed between one or more sensors and the airway of the subject.4. The system of claim 2 , wherein the parameter determination module is further configured to determine inspiratory tidal volume claim 2 , and wherein the displayed information is further based on the inspiratory tidal volume.5. The ...

Inhaler and evaluation unit therefor

An inhaler with an evaluation unit, a housing with a mouthpiece and a chamber with a container unit. Provided between the container unit and a chamber wall is an annular gap, through which air is sucked in and mixes with medium flowing through a discharge. The evaluation unit is mounted on the container unit and is pressed down together with a container of the container unit and detects air sucked through the annular gap. A measuring channel forms part of a first flow path for air flowing into the chamber from a surrounding area and a flow sensor detects the air flowing through the measuring channel. A second flow path is provided for air flowing into the chamber from a surrounding area, the flow resistance of which second path is equal to or lower than that of the first flow path.

Ventilation mask

A nasal ventilation mask having one or more attachment ports located adjacent to and overlying an upper lip of a patient when worn.

SYSTEM AND METHOD FOR ADAPTIVE SCHEDULING OF PAUSE MANEUVERS USED FOR ESTIMATION OF COMPLIANCE AND/OR RESISTANCE DURING MECHANICAL VENTILATION

A ventilation device includes a mechanical ventilator (), respiratory sensors () configured to acquire measurements of respiratory variables including at least measurements of airway pressure and airway flow, and an electronic processor () programmed to perform a ventilation method including: operating the mechanical ventilator to provide mechanical ventilation controlled using measurements acquired by the respiratory sensors; performing a pause maneuver comprising closing at least one of an inhalation valve () and an exhalation valve () for a pause interval and estimating a respiratory mechanics index from one or more respiratory system parameters estimated from measurements acquired by the respiratory sensors during or after the pause interval; and triggering a pause maneuver in response to detecting a change in the estimated respiratory mechanics index. 1. A ventilation device comprising:a mechanical ventilator;respiratory sensors configured to acquire measurements of respiratory variables including at least measurements of airway pressure and airway flow;an electronic processor; and operating the mechanical ventilator to provide mechanical ventilation controlled using measurements acquired by the respiratory sensors,', 'performing a pause maneuver comprising closing at least one of an inhalation valve and an exhalation valve for a pause interval and estimating a respiratory mechanics index from one or more respiratory system parameters estimated from measurements acquired by the respiratory sensors during or after the pause interval, and', estimating the respiratory mechanics index by computing a time constant (τ) of a decay of airway flow measured by the respiratory sensors during an exhalation phase of a breath, detecting the change in the estimated respiratory mechanics index as a detected change in the time constant computed over successive breaths, and triggering a pause maneuver in response to the detected change in the time constant over successive ...

PRESSURE BASED GAS LEAK TESTING

Gas-pressure-based testing, in some embodiments, features a self-leak-testing module () that includes an internal sensor and is configured for measuring, using the sensor, gas leakage () from a set of walls that defines respective gas passageways that both exist within the module and are incident to the gas pressure measured. One or more walls of the set may extend outside the module. The module can be configured for deciding, based on a result of the measuring, whether a magnitude of the leakage exceeds a predetermined threshold. A source for applying the pressure may be internal () or external (). Gas pressure based pattern recognition can be used to identify, optionally during treatment and in real time, one or more leak sites responsible for the leakage. The module is implementable as a ventilation monitoring module that measures differential flow of a breathing circuit, the testing serving to prevent cross-contamination of patients. 1. A self-leak-testing ventilator monitoring module comprising:an internal sensor;internal valves;pressure transmission conduits having a proximal end coupled to module input ports and a distal end of the pressure transmission conduits are terminated by a receptacle external to said self-leak-testing ventilator monitoring module, wherein the receptacle is configured for being releasably coupled to at least one of (i) a leak-test-fixture having a gas charging capability from a fixture pressure source, (ii) a self-test plug and (iii) a connector coupled at one end of flexible tubing of a disposable flow sensor, wherein an opposite end of the flexible tubing includes an airway adaptor configured for being coupled within a breathing circuit wherein the self-test and the disposable flow sensor rely on an existing pressure source for providing a gas charging capability;gas passageways coupled between the internal sensor and the internal valves, and further coupled to said pressure transmission conduits anda microcontroller configured for ...

DISTINGUISHING CLOSED AND OPEN RESPIRATORY AIRWAY APNEAS BY COMPLEX ADMITTANCE VALUES

Methods and apparatus are disclosed for determining the occurrence of a closed or open apnea. Respiratory air flow from a patient is measured to give an air flow signal. The determination of an apnea is performed by applying an oscillatory pressure waveform of known frequency to a patient's airway, calculating a complex quantity representing a patient admittance () and comparing its value with ranges () indicative of open or closed apneas. The method distinguishes open from closed apneas even when the model used to calculate admittance is not based on details of the respiratory apparatus. In addition the patient admittance may be compared with admittance during normal breathing to avoid having to characterize the airway. 1. (canceled)2. An apparatus for providing a supply of continuous positive airway pressure to an airway of a patient at a desired treatment pressure , the apparatus comprising:a flow generator adapted to provide a supply of continuous positive airway pressure, the flow generator adapted to couple with an air delivery tube coupled with a patient interface configured to sealingly engaged with a face of the patient;a means for determining respiratory air flow and pressure in the patient interface;a means for measuring a patient impedance of the airway during a period of a breathing cycle when an apnea is not occurring; anda controller to control operation of the flow generator based on the determined respiratory air flow and pressure, controlling application of an oscillatory pressure waveform of known frequency to the patient interface for delivery to the airway of the patient in use;', 'measuring an apnea impedance of the airway during the apnea; and', 'comparing the measured apnea impedance with the patient impedance to determine whether the airway is patent., 'the controller configured in use to detect the occurrence of an apnea and to determine patency of the airway of the patient during the apnea by performing3. The apparatus according to claim 2 ...

Method, apparatuses and computer program product for enabling operation of an aerosol generation device

A method of enabling an operation of an aerosol generation device including at the aerosol generation device: determining whether an aerosol generation device held operation enablement message is valid or invalid, and enabling the operation if the aerosol generation device held operation enablement message is determined to be valid, at the personal computing device attempting to obtain a server generated operation enablement message, transmitting the server generated operation enablement message to the aerosol generation device if the server generated operation enablement message is obtained, and generating a personal computing device generated operation enablement message and transmitting the personal computing device operation enablement message to the aerosol generation device if the server generated operation enablement message is not obtained. The aerosol generation device uses whichever of the operation enablement messages it receives from the personal computing device as the aerosol generation device held operation enablement message.

RESPIRATORY HUMIDIFICATION DEVICE

A respiratory humidification device includes: a casing; a separator wall to divide an interior space into filling and humidification chambers, wherein a bottom edge of the separator wall leaves a space between it and the casing bottom to define a passage allowing water to flow atop the casing bottom between the chambers, and enabling the water level to rise enough to block the passage to prevent respiratory gas from passing therethrough; a valve and float within the filling chamber to control water flow into the filling chamber to prevent the water level from rising higher than a threshold; and wherein an outer wall of the casing and the separator wall cooperate with the water surface within the humidification chamber to define an elongate tube-like pathway through which respiratory gas proceeds along a path extending generally parallel to the water surface within the humidification chamber to be humidified. 1. A respiratory humidification device comprising:a casing comprising a casing top having an at least partially cylindrical shape and a casing bottom having an at least partially circular shape that cooperate to enclose an interior space, wherein the casing bottom defines an underside portion of the casing that is formed from thermally conductive material to conduct heat into the interior space from a heating component positioned external to and underneath the casing to heat water within the casing;an at least partially cylindrical separator wall within the interior space that extends downward from the casing top and toward the casing bottom to divide the interior space into a filling chamber and an annular humidification chamber that surrounds the filling chamber, wherein a bottom edge of the separator wall leaves a space between the separator wall and the casing bottom that defines a main passage between the filling chamber and the humidification chamber that allows the water to flow atop the casing bottom between the filling chamber and the humidification ...

METHODS AND SYSTEMS FOR LEAK ESTIMATION

The systems and methods include providing, displaying, and/or utilizing leak estimation during ventilation of a patient with a ventilator. The systems and methods include providing, displaying, and/or utilizing internal leak estimation, total leak estimation, and/or external leak estimation during ventilation of a patient with a ventilator. 123-. (canceled)24. A method of determining leakage during ventilation of a patient , comprising:delivering a flow of breathing gases to the patient via a ventilation tubing system including a patient interface;receiving output indicative of at least one of a flow measurement and a pressure measurement from sensors that are operatively coupled to the ventilation tubing system, the sensors including a proximal sensor and at least one of an inspiratory sensor or an expiratory sensor;estimating internal leak flow by modeling internal leakage through a first internal orifice of fixed size and a second internal orifice of varying size using sensor output from at least the proximal sensor; andestimating total leak flow by modeling total leakage in the ventilation tubing system through a first circuit orifice of fixed size and a second circuit orifice of varying size using sensor output from at least one of the inspiratory sensor or the expiratory sensor.25. The method of claim 24 , further comprising:displaying the internal leak flow and the total leak flow.26. The method of claim 24 , further comprising:estimating an external leak flow based on the internal leak flow and the total leak flow.27. The method of claim 24 , further comprising:calculating a ratio of internal leak flow to total leak flow.28. The method of claim 27 , further comprising:comparing the ratio to a disconnect threshold; andbased on the comparing, detecting whether a disconnection exists in the ventilation tubing system.29. The method of claim 28 , further comprising:when a disconnection is detected, displaying a disconnect notification.30. The method of claim 24 , ...

Conduit with magnetic connector

A therapy device that includes an air conduit that is configured both to secure the patient interface to the patient as well as provide pressurised air to the patient. The positioning and stabilising structure of the patient interface may include magnets that assist in positioning the positioning and stabilising structure and also assist in positioning the air conduit of the positioning and stabilising structure to interact with the mask assembly.

METHOD AND APPARATUS FOR RESOLVING UPPER AIRWAY OBSTRUCTION, RESISTANCE OR INSTABILITY

A CPAP apparatus has a variable rise time (iii) from a base level of positive air pressure during expiration (EPAP) to a higher level during inspiration (IPAP). The rise time is adjusted in order to reduce obstruction, resistance or instability in the upper airway. 1. (canceled)2. A method for operating a positive airway pressure apparatus having a flow generator , a patient interface , an air delivery conduit for delivering air from the flow generator to the patient interface , and a controller that causes air to be delivered from the flow generator through the air delivery conduit at desired pressures at the patient interface , the method comprising:(i) controlling the flow generator to reduce the air flow through the delivery conduit to the patient interface to deliver a lower base level of positive air pressure (“EPAP”) in the patient interface during an expiratory portion of the patient's respiratory cycle;(ii) controlling the flow generator to increase air flow through the delivery conduit to the patient interface during inhalation so as to maintain the pressure in the patient interface at a higher level (“IPAP”) suitable for inhalation, wherein the time for the flow generator to increase the pressure from EPAP to a proportion of the IPAP is a variable rise time; and(iii) monitoring the shape of the inspiratory portion of the respiratory airflow and increasing the rise time upon detection of a shape indicative of the presence of upper airway obstruction, resistance or instability.3. The method of wherein the proportion comprises a percentage of the IPAP.4. The method of wherein the proportion comprises ninety percent.5. The method of wherein the monitoring comprises detecting patient effort.6. The method of wherein the monitoring comprises detecting a patient breath.7. The method of wherein the monitoring comprises detecting obstruction.8. The method of wherein the monitoring comprises detecting resistance.9. The method of wherein the monitoring comprises ...

ARTIFICIAL RESPIRATION SYSTEM WITH TIMING CONTROL AND AUTOMATIC MASK DETECTION

A ventilator system and method can deliver artificial respirations to a person receiving cardiopulmonary resuscitation. The system and method may provide intermittent breath delivery (e.g., with interruptions), so that activation of the device gives a specific predetermined number of breaths, interspersed with a set time period of no breath. This pattern may be by default, manually triggered where one activation gives a set number of breaths followed by a pause until the next activation for breath (one activation gives one breath cycle), or one activation results in continuous cycle of intermittent breaths). In some embodiments, a signaling mechanism may deliver signals to a rescuer relating to timing of chest compressions of the person. The timing of the chest compressions for the signals may be based on a time of delivery of the artificial respirations. In certain embodiments, different sized masks each include a gas flow restrictor which is unique for the size of mask. The ventilator system may assess the size of the mask based on a pressure differential created by the unique gas flow restrictor. 1. A ventilator system , comprising:a set of two or more ventilator masks, wherein each of at least two of the ventilator masks is configured in a size that will fit upon a different range of sizes of human faces than at least one other ventilator mask in the set of two or more ventilator masks, wherein each of the at least two ventilator masks comprises a gas flow restrictor that is different from a gas flow restrictor of the other ventilator masks of the at least two ventilator masks; and an air/oxygen source;', 'a connector configured to couple with each of the at least two ventilator masks; and', 'an air/oxygen supply system comprising a detection system capable of determining a pressure created by the application of air/oxygen to a mask coupled to the ventilator supply system, and', 'a controller coupled to the detection system, wherein the controller determines, ...

Determining of subject zero flow using cluster analysis

Systems and method for determining zero subject flow rate for correcting leak estimation in respiratory devices. Estimating leak in respiratory devices is necessary for proper ventilation of the subject. Correctly estimating leak allows synchronous triggering and enables accurate measurements of respiratory parameters such as tidal volumes and peak flows to be performed. The systems ( 10 ) and the method ( 100 ) herein provide a solution to correct ( 116 ) for errors in leak estimation methods through analysis ( 108, 110, 112 ) of flow rate of the pressurized flow of breathable gas generated ( 104 ) by a pressure generator ( 12 ) of a respiratory device, and identification or estimation ( 114 ) of the flow rate of the pressurized flow at which zero subject flow rate occurs, wherein adjustments to the employed leak estimation method can be thereafter made. The analysis and determination or estimation involve clustering methods, in particular analysis of a histogram of flow rate parameter values determined for individual sampling intervals, wherein the flow rate parameter value corresponding to zero subject flow rate is determined on the basis of the histogram and may involve determining a histogram bin or range value having the highest number of flow rate parameter values or mode of the histogram.

Anesthesia Station for Laboratory Animals and Method for Determining the Organohalogen Saturation Rate of the Filters of Such an Anesthesia Station

Provided herein is an anesthesia station for at least one laboratory animal, including an anesthesia area connected to at least one peripheral receiving the laboratory animal. The anesthesia area is able to supply the peripheral with, halogenated anesthetic gases. The station further includes a system for aspirating the halogenated gases from the peripheral and at least one filter having a determined organohalogen concentration retention capacity. The filter is arranged in such a way as to be crossed by the halogenated anesthetic gases from the peripheral during operation of the aspiration system. The station also includes a system for the automatic determination in real-time of the organohalogen saturation rate of the filter. 1. An anesthesia station for one or more laboratory animals , comprising:an anesthesia area connected to at least one peripheral receiving the laboratory animal, said anesthesia area being able to deliver halogenated anesthetic gases to said peripheral;a system for aspirating halogenated gases from the peripheral;at least one filter having a predetermined organohalogen concentration retention capacity, said filter being arranged in such a way as to be crossed by the halogenated anesthetic gases originating from the peripheral during operation of the aspirating system; anda system for automatically determining, in real time, the organohalogen saturation rate of the filter, said system comprising:a device for measuring instantaneous flow rates of the halogenated anesthetic gases passing through the filter, at given time intervals;a device for determining the concentration of the halogenated gases retained in the filter, on the basis of the instantaneous flow rates of the halogenated anesthetic gases measured at each given time interval; and,a control unit for calculating the saturation rate of the filter on the basis of the concentrations of the halogenated anesthetic gases determined at each time interval and on the basis of the predetermined ...

SYSTEMS AND METHODS FOR DRIVE PRESSURE SPONTANEOUS VENTILATION

This disclosure describes systems and methods for providing drive pressure ventilation of a patient. The disclosure describes a novel breath type that provides a spontaneous breath type that allows for the calculation of drive pressure that does not require invasive monitoring. 1. A method for drive pressure ventilation of a patient with a ventilator comprising:ventilating the patient with the ventilator in a spontaneous breath subtype, wherein the spontaneous breath subtype does not include a proportional assist (PA) breath subtype;non-invasively monitoring respiratory data of the patient with at least one of a pressure sensor and a flow sensor operatively coupled to at least one of a patient circuit or a pressure generating system;analyzing the respiratory data to detect a patient effort;delivering inspiratory gas to the patient with the ventilator in response to a detected patient effort;determining an occurrence of a condition by the ventilator based on information gathered by the ventilator,in response to the condition, determining a percent support setting for the PA breath subtype based on a target setting or the respiratory data from the spontaneous breath subtype;automatically and temporarily switching from the spontaneous breath subtype into the PA breath subtype for at least three breaths in response to calculating the percent support setting;estimating a respiratory system compliance and a respiratory system resistance of the patient during the PA breath subtype based on the respiratory data;returning to the spontaneous breath subtype after the at least three breaths;calculating a drive pressure of the patient during the spontaneous breath subtype utilizing the respiratory system compliance, the respiratory system resistance, and the respiratory data received after the return; anddisplaying the drive pressure.2. The method of claim 1 , wherein the condition is a change in monitored pressure claim 1 , monitored tidal volume claim 1 , or monitored flow of ...

SYSTEM AND METHOD FOR DETERMINING VENTILATOR LEAKAGE DURING STABLE PERIODS WITHIN A BREATH

This disclosure describes systems and methods for compensating for leaks in a ventilation system based on data obtained during periods within a breath in which the patient is neither inhaling nor exhaling. The methods and systems described herein more accurately and quickly identify changes in leakage. This information is then to estimate leakage later in the same breath or in subsequent breaths to calculate a more accurate estimate of instantaneous leakage based on current conditions. The estimated leakage is then used to compensate for the leak flow rates, reduce the patient's work of breathing and increase the patient's comfort (patient-ventilator breath phase transition synchrony). 124.-. (canceled)25. A method for determining leakage in a respiratory gas supply system , the respiratory gas supply system having a controller adapted for delivering a flow of respiratory gases to a breathing patient , the method comprising:monitoring data indicative of at least one of pressure or flow in the respiratory gas supply system;determining, by the controller, that the data indicative of at least one of pressure or flow has been stable for a period of time within a breath of a patient;calculating leakage information based at least in part on the data determined to be stable during the period of time within the breath;determining, by the controller, a leakage rate after the period of time based at least in part on the leakage information; andadjusting at least one of a pressure and a flow delivered to the patient based on the determined leakage rate.26. The method of claim 25 , wherein determining that the data indicative of at least one of pressure or flow has been stable for a period of time is based on a comparison to at least one stability criterion.27. The method of claim 25 , further comprising:displaying the leakage rate to a user on a display.28. The method of wherein determining the leakage rate further comprises:determining an instantaneous leakage rate after the ...

Vent arrangement for respiratory mask

A control system provides automated control of gas washout of a patient interface, such as a mask or nasal prongs. A gas washout vent assembly of the system may include a variable exhaust area, such as one defined by gears, radial exhaust revolvers and/or flow diverters for a conduit having a variable gas passage channel. The vent assembly may be attached substantially near or included with the patient interface. An actuator of the assembly, such as a solenoid, motor or voice coil, manipulates the vent assembly. The actuator may be configured for control by a processor to change the exhaust area of the vent assembly based on various methodologies including, for example, sleep detection, disordered breathing event detection and/or leak detection.

Respiratory assistance apparatus

A head-mounted respiratory assistance apparatus configured to provide a respiratory gases stream to a user. The head-mounted respiratory assistance has a main body securable to the head of a user and a blower unit that is operable to generate a pressurised gases stream from a supply of gases from the surrounding atmosphere. A patient interface is provided on the main body that has a gases inlet which is fluidly connected to the blower unit and which is configured to deliver the pressurised gases to the user's nose and/or mouth.

PORTABLE AND COMPACT SYSTEM FOR DELIVERY OF HUMIDIFIED HIGH FLOW NASAL CANNULA (HHFNC) THERAPY IN NEONATES AND INFANTS

A portable system for delivery of humidified high flow nasal cannula therapy includes a portable system housing, a respiratory circuit positioned within the housing comprising an ambient air conduit and an oxygen conduit merging downstream into a blended air conduit, an air pump positioned within the housing and connected to an upstream end of the ambient air conduit, configured to transfer ambient air into the ambient air conduit, an oxygen supply connection element connected to an upstream end of the oxygen conduit and configured to connect to an oxygen supply, a humidification chamber connected to a downstream end of the blended air conduit and an upstream end of an air output conduit, and a humidification chamber seating portion connected to the housing and configured to seat the humidification chamber, where the humidification chamber seating portion comprises a sterilization light source. 1. A portable system for delivery of humidified high flow nasal cannula therapy comprising:a portable system housing;a respiratory circuit positioned within the housing comprising an ambient air conduit and an oxygen conduit merging downstream into a blended air conduit;an air pump positioned within the housing and connected to an upstream end of the ambient air conduit, configured to transfer ambient air into the ambient air conduit;an oxygen supply connection element connected to an upstream end of the oxygen conduit and configured to connect to an oxygen supply;a humidification chamber connected to a downstream end of the blended air conduit and an upstream end of an air output conduit; anda humidification chamber seating portion connected to the housing and configured to seat the humidification chamber, comprising a sterilization light source.2. The system of further comprising:a first heat source positioned near the humidification chamber and configured to heat water stored in the humidification chamber.3. The system of claim 2 , wherein the first heat source comprises a ...

Cough detection in a respiratory support system

The present disclosure pertains to a pressure support system configured to identify respiratory events of a subject. The system is configured to produce and analyze signals pertaining to one or more parameters of the pressurized flow of breathable gas to identify respiratory events. The respiratory events may include coughs and/or other respiratory events. The parameters may comprise a pressure, flow and/or volume of the pressurized flow of breathable gas. In some embodiments, cough detection may be based on a vibration in pressure, a negative spike in flow, a cessation in flow, and/or a large insufflation. In some embodiments, the system comprises one or more of a pressure generator, a subject interface, one or more sensors, a processor, a user interface, electronic storage, and/or other components.

FLOW GENERATOR CHASSIS ASSEMBLY WITH SUSPENSION SEAL

A seal for a chassis assembly of a flow generator is configured to provide a flow of breathable gas. The seal includes a blower receptacle sealing portion configured to seal a blower receptacle of the chassis assembly configured to receive a blower configured to generate the flow of breathable gas. The seal further includes a flow sensor sealing portion configured to seal a flow sensor provided in the chassis assembly and configured to measure the flow of breathable gas. The seal also includes a blower mount configured to receive a portion of the blower and mount the blower to the seal. In addition, the seal includes a blower mount suspension configured to connect the blower mount to the blower receptacle sealing portion. When assembled, the seal and the chassis assembly define a flow path from an inlet of the chassis assembly to an outlet of the chassis assembly. 1a blower receptacle sealing portion configured to seal a blower receptacle of the chassis assembly configured to receive a blower configured to generate the flow of breathable gas;a flow sensor sealing portion configured to seal a flow sensor provided in the chassis assembly and configured to measure the flow of breathable gas;a blower mount configured to receive a portion of the blower and mount the blower to the seal; anda blower mount suspension configured to connect the blower mount to the blower receptacle sealing portion, wherein in an assembled condition the seal and the chassis assembly define a flow path from an inlet of the chassis assembly to the blower receptacle of the chassis assembly to an outlet of the chassis assembly.. A seal for a chassis assembly of a flow generator configured to provide a flow of breathable gas, the chassis assembly including an upper chassis and a lower chassis, the seal comprising: This application is a continuation of U.S. application Ser. No. 14/556,343, filed Dec. 1, 2014, now allowed, which is a continuation of U.S. application Ser. No. 12/794,206, filed Jun. 4, ...

Inhalation device for use in aerosol therapy

An inhalation device having a base unit, a mouthpiece, and an aerosol head is provided. The base unit has an air inlet, an air outlet opening, a groove for receiving the mouthpiece, and key lock member(s). The mouthpiece has two segments: a first segment which is insertable into the groove of the base unit and has an air inlet opening and a lateral opening for receiving an aerosol generator and a second segment with an aerosol outlet. The aerosol head has an aerosol generator, a liquid reservoir, and key lock member(s) complementary to those of the base unit. The base unit, mouthpiece and aerosol head are connectable with one another such that when engaging the members of the key lock with the complementary members, the aerosol generator is inserted into the lateral opening of the mouthpiece.

In-exsufflation therapy auto-adjustment

The present disclosure pertains to a method and system configured to in-exsufflate a subject by controlling the in-exsufflation pressure waveform. In some embodiments, the system comprises a pressure generator, a subject interface, one or more sensors, one or more processors, electronic storage, a user interface, and/or other components. The system is configured to assist the subject to loosen and/or expel secretions by inducing a percussive pressure waveform delivered to the subject during inhalation and/or exhalation. The system is configured to control the in-exsufflation therapy delivered to the subject without requiring regular manual setting and/or adjustment of pressures, pressure amplitudes, a frequency range, and/or other parameters of the percussive pressure waveform.

DELIVERING VARIABLE POSITIVE AIRWAY PRESSURE DEPENDING ON AWAKE STATE AND SLEEP DISORDERED BREATHING

Positive airway pressure (“PAP”) systems and methods are provided which supply a patient with a range of pressures for treatment when the patient is determined to be asleep, and an awake pressure for use when the patient is determined to be awake, the awake pressure configured for the comfort of the patient. The awake pressure is configured to be lower than the lower bound of the pressure range and can be a therapeutic or sub-therapeutic pressure. The PAP systems and methods disclosed herein advantageously allow for the pressure range to be tailored for effective treatment of sleep disordered breathing while allowing the awake pressure to be set for the comfort of the patient. This can advantageously increase both the efficacy of the treatment of SDB and patient compliance with the treatment. 119.-. (canceled)20. A positive airway pressure device , the device comprising:a flow generator configured to provide gas at a pressure to a patient;a sensor configured to measure breathing of the patient; and detect sleep disordered breathing of the patient based at least in part on analysis of data acquired by the sensor;', 'determine a sleep state of the patient based at least in part on the analysis of data acquired by the sensor;', 'control the flow generator to provide a pressure within an effective therapeutic pressure range, the effective therapeutic pressure range being between a low pressure and a high pressure in response to the sleep state being determined to be asleep, the pressure provided based at least in part on whether sleep disordered breathing is detected; and', 'control the flow generator to provide an awake pressure different from the low pressure in response to the sleep state being determined to be awake, wherein the control system employs a transition function to ramp the pressure up from the awake pressure to the effective therapeutic pressure range and ramp the pressure down from the effective therapeutic pressure range to the awake pressure; and', ' ...

FLOW SENSING MEDICINE DELIVERY DEVICE

Methods, systems, computer-readable media, and apparatuses for determining a property of airflow delivered to a user of a medical inhalation device are disclosed. 1. A medical device , comprising:a housing that includes a mouthpiece;a transducer coupled to the housing, the transducer being configured to generate a signal corresponding to one or more sound waves generated by air flowing towards the mouthpiece, the one or more sound waves being within an ultrasonic frequency range, and the air including medication for delivery to a user of the medical device;andcircuitry coupled to the transducer, the circuitry being configured to determine, based on the signal, a property corresponding to the air flowing towards the mouthpiece.2. The medical device of claim 1 , wherein the ultrasonic frequency range does not include frequencies below twenty kilohertz.3. The medical device of claim 1 , wherein the one or more sound waves are within at least a one kilohertz frequency range.4. The medical device of claim 1 , wherein the medical device includes a physical feature configured to generate the one or more sound waves in response to the air flowing towards the mouthpiece.5. The medical device of claim 4 , wherein the physical feature is configured to divert a portion of the air flowing towards the mouthpiece.6. The medical device of claim 5 , wherein the physical feature includes a knife edge configured to divert the portion of the air flowing towards the mouthpiece in response to the air contacting the knife edge.7. The medical device of claim 4 , wherein the physical feature is configured to substantially generate the one or more sound waves when the air flows towards the mouthpiece and not to generate the one or more sound waves when the air flows away from the mouthpiece.8. The medical device of claim 4 , wherein the physical feature is configured to generate the one or more sound waves outside of the ultrasonic frequency range.9. The medical device of claim 8 , wherein ...

APPARATUS FOR RESPIRATING OF PATIENTS

Apparatus for the respiration of patients with means for the circulation in one direction of respiratory gas, with a connection for the patient and with further connections for the supply and discharge of the various components of the gas, whereby the device is provided with means by which the pressure in the line system can be varied according to a certain respiratory pattern, with a primary part that is connected to means for the generating of a work fluidum, the varying pressure of which can establish the varying of the pressure in the line system, and with a secondary part that is part of or is connected to the line system, whereby a cylinder is provided which is divided in a part that connects to the primary part and a part that connects to the secondary part by a disc that is movable relative to the inner wall thereof.

METHOD AND APPARATUS FOR BREATHING ASSISTANCE

Methods and system for treating obstructive sleep apnea and snoring are disclosed. The system generally comprises a mask for delivering pressurized air to patient's breathing orifice, a sensing mechanism for continuously assessing the state of patient's breathing and a pressure generator for generating the pressurized air in the mask. The pressurized air is applied to the breathing orifice only during selected portions of the breathing cycle, when such pressure might be required to prevent occlusion of the airway or to restore patency of the airway after such occlusion occurs. 1. A system to maintain upper airway patency of a subject during sleep , comprising:a mask adapted to be applied to at least one breathing orifice of the subject;a valve arrangement including at least one controllable breathing valve associated with said mask and configured to be connected between the at least one breathing orifice and ambient atmosphere, the at least one controllable breathing valve having an open state and at least one flow-restricting state;a controller adapted to control the at least one controllable breathing valve; anda sensor for providing to said controller an input indicative of a waveform of at least one of the subject's breathing cycles, said controller processing said waveform so as to identify within said waveform at least one spontaneous inspiration phase during at least part of which a pressure within said mask is negative and at least one spontaneous expiration phase, (a) allow substantially unrestricted spontaneous inspiration via the valve assembly;', '(b) allow spontaneous expiration via said at least one controllable breathing valve in said open state for a first part of said expiration phase; and', '(c) control said at least one controllable breathing valve to restrict flow during a second part of said spontaneous expiration phase, thereby achieving a temporarily elevated pressure within said mask., 'wherein said valve arrangement and said controller are ...

DEVICE FOR SUPPORTIVE RESPIRATION OF A LIVING BEING AND COMPUTER PROGRAM

The invention relates to a device () for supportive respiration of a living being (), said device having a sensor arrangement, a programmable control unit () and an air conveyance unit (), which is controllable by the control unit (). The sensor arrangement has a pressure sensor () and an air flow sensor (), which are designed for the temporally successive detection of respiratory pressure values and respiratory air flow values of the living being (). The programmable control unit () is designed to evaluate respiratory air pressure profiles and respiratory air flow profiles formed from the temporally successive respiratory pressure values and respiratory air flow values detected by the sensor arrangement In order to provide respiration for the living being () which is in particular comfortable and individually adapted to the current needs of the living being (), according to the invention the programmable control unit () is designed to detect unsuccessful respiratory movements of the living being () and the cause thereof on the basis of characteristic features of the respiratory pressure profiles and/or the respiratory air flow profiles. The invention furthermore relates to a computer program having program code means, designed to carry out a method for supportive respiration of a living being () by means of a respirator device () when the computer program is executed on a computer unit of the respirator device (). 1. A device for supportive ventilation of a living being , comprising:a sensor arrangement,a programmable control unit, andan air delivery unit controllable by the programmable control unit,wherein the sensor arrangement comprises a pressure sensor and an air flow sensor which are respectively designed for temporally successive detection of respiratory air pressure values and temporally successive detection of respiratory air flow values of the living being, andwherein the programmable control unit is designed to evaluate respiratory air pressure curves ...

RESPIRATORY ASSISTANCE APPARATUS

A head-mounted respiratory assistance apparatus configured to provide a respiratory gases stream to a user. The head-mounted respiratory assistance has a main body securable to the head of a user and a blower unit that is operable to generate a pressurised gases stream from a supply of gases from the surrounding atmosphere. A patient interface is provided on the main body that has a gases inlet which is fluidly connected to the blower unit and which is configured to deliver the pressurised gases to the user's nose and/or mouth. 157-. (canceled)58. A head-mountable respiratory assistance apparatus configured to provide a respiratory gases stream to a user , comprising:a patient interface; anda blower unit comprising a lightweight impeller, the blower unit being fixedly or releasably mounted to the front of the patient interface and having a gases inlet to receive a supply of gases from the surrounding atmosphere and being operable to generate a pressurised gases stream at a gases outlet,wherein the patient interface has a gases inlet which is fluidly connected to the gases outlet of the blower unit and which is configured to deliver the pressurised gases to the user's nose and/or mouth via one or more gases outlets,wherein a gases flow path from the gases inlet of the blower unit to the gases outlet(s) of the patient interface is substantially sealed such that there is zero bias flow along the gases flow path, andwherein the apparatus is configured so that excess exhaled gases from the user vent back through the gases flow path in the opposite direction of the pressurised gases stream and exit the head-mountable respiratory assistance apparatus into the atmosphere from the gases inlet of the blower unit.59. The head-mountable respiratory assistance apparatus according to wherein the gases flow path volume between the gases inlet of the blower unit and the gases outlet(s) of the patient interface is less than approximately 200 mL.60. The head-mountable respiratory ...

RESPIRATORY GAS SUPPLY SYSTEM

Disclosed is a respiratory gas supply system comprising a respiratory gas source, a control unit, a pressure control module, a flow control module, a pressure sensor device, a flow sensor device and a user interface for the specification of respiratory gas supply parameters or for the exchange of data. The control unit alternately activates the pressure control module and the flow control module, with the pressure control module controlling the respiratory gas source to specify a respiratory gas pressure in the range of 0-90 mbar and the flow control module controlling the respiratory gas source to specify a respiratory gas flow in the range of 0-90 l/min. 1. A system for respiratory gas supply , wherein the system comprises a respiratory gas source , a control unit , a memory , a pressure control module , a flow control module , a pressure sensor device , a flow sensor device , a user interface for a specification of parameters of the respiratory gas supply or for an exchange of data , comprising a respiratory gas tube and a patient interface , and additionally comprises at least one humidifier and/or an oxygen source and/or a nebulizer and/or a heater , the control unit alternately activating the pressure control module or the flow control module , the pressure control module controlling the respiratory gas source so as to specify a respiratory gas pressure , and the flow control module controlling the respiratory gas source so as to specify a respiratory gas flow.2. The system of claim 1 , wherein the control unit additionally activates the humidifier and the heater for heating and humidifying the respiratory gas when the flow control module is activated.3. The system of claim 1 , wherein the control unit additionally activates the humidifier and the heater and the oxygen source for conditioning the respiratory gas when the flow control module is activated.4. The system of claim 1 , wherein the flow control module controls the respiratory gas source to specify a ...