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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 1574. Отображено 100.
22-03-2012 дата публикации

Material delivery system

Номер: US20120071715A1
Автор: Mordechay Beyar, Oren Globerman, Rami Keller
Принадлежит: By Pass Inc

A method for injecting a therapeutic agent into a target tissue, the method comprising: (a) providing an expandable member; (b) positioning said expandable member in proximity to the target tissue; (c) Introducing the therapeutic agent into the expandable member until a desired pressure is achieved; and (d) creating a plurality of small apertures in the expandable member.

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Номер записи: 1
21-06-2012 дата публикации

Irrigated ablation electrode assemblies

Номер: US20120157990A1
Автор: Steven C. Christian
Принадлежит: St Jude Medical Atrial Fibrillation Division Inc

An irrigated ablation electrode assembly comprises a distal member, a first manifold, and a second manifold. The distal member includes an outer surface; an inner surface; and at least one radially extending passageway that extends from the inner surface of the distal member to the outer surface of the distal member. The first manifold includes an outer surface, an inner cavity, and at least one radially extending passageway that extends from the inner cavity to the outer surface of the first manifold. The second manifold includes an outer surface, an inner surface, and at least one radially extending passageway that extends from the inner surface of the second manifold to the outer surface of the second manifold. Other irrigated ablation electrode assemblies are also presented.

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Номер записи: 2
13-09-2012 дата публикации

System and method for renal artery occlusion during renal denervation therapy

Номер: US20120232409A1
Автор: Allan C. Shuros, Jeffrey E. Stahmann
Принадлежит: Boston Scientific Scimed Inc

A catheter includes a flexible shaft having a length sufficient to access a patient's renal artery relative to a percutaneous access location. A treatment arrangement is provided at a distal end of the shaft and configured for deployment in the renal artery. The treatment arrangement includes an ablation arrangement configured to deliver renal denervation therapy. An occlusion arrangement is configured for deployment in the renal artery and for altering blood flow through the renal artery during or subsequent to renal denervation therapy delivery. A monitoring unit is configured for monitoring for a change in one or more physiologic parameters influenced by the renal denervation therapy. The monitoring unit is configured to produce data useful in assessing effectiveness of the renal denervation therapy based on the physiologic parameter monitoring.

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Номер записи: 3
25-04-2013 дата публикации

Cryosurgical system

Номер: US20130103020A1
Автор: Alexander Levin
Принадлежит: Individual

An invention relates to the area of cryosurgical equipment. It proposes a cryosurgical system, which incorporates measuring and computing means for estimation of a real time ice ball diameter and operation temperature of a cryotip (the distal section of a cryosurgical probe). The cryosurgical probe of the cryosurgical system operates by blowing in a gaseous medium at cryogenic temperature.

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Номер записи: 4
02-05-2013 дата публикации

Cryogenic balloon device with radiofrequency tip

Номер: US20130110098A1
Автор: Jean-Pierre Lalonde
Принадлежит: MEDTRONIC CRYOCATH LP

An intravascular ablation device, including a flexible elongate body; an expandable element positioned on the elongate body; a radiofrequency or electroporation treatment segment located distally of the expandable element; a cryogenic coolant source in fluid communication with an interior of the expandable element; and a radiofrequency or electroporation energy source in communication with the radiofrequency or electroporation treatment segment.

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Номер записи: 5
11-07-2013 дата публикации

Enhanced medical device for use in bodily cavities, for example an atrium

Номер: US20130178851A1
Автор: Aldo Antonio Salvestro, Ashkan Sardari, Douglas Goertzen, Fernando Lopes, Jorge Jaramillo, Peter Hawes, Saar Moisa
Принадлежит: Kardium Inc

Systems, methods, and devices allow intravascular or percutaneous mapping, orientation and/or ablation, in bodily cavities or lumens. A device includes elongate members, moveable between an unexpanded configuration and an expanded or fanned configuration. The elongate members form a stack in the unexpanded configuration to fit through a catheter sheath. The elongate members follow respective arcuate or curvilinear paths as advanced from the sheath into the bent or coiled stack configuration, adopting volute, scroll or rho shapes, and may be nested. The elongated members are fanned or radially spaced circumferentially with respect to one another into the expanded or fanned configuration. Transducer elements carried by elongate members sense various physiological characteristics of or proximate tissue, and/or may apply energy to or proximate tissue. The elongate members are rotatable in groups or as a group in the expanded configuration. The device is retractable.

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Номер записи: 6
10-10-2013 дата публикации

Methods and Apparatus for Ablating Lung Nodules with Vapor

Номер: US20130267939A1
Автор: Brian Thomas Cran, Daniel Lawrence Reddy, Dean T. Corcoran, Erik Henne, Robert Lawrence Barry
Принадлежит: Uptake Medical Corp

Devices and systems are described for lung nodules with heated condensable vapor. The device can have an elongated shaft coupled to a vapor generator. High temperature vapor can be directed through the shaft into the lung to treat the lung nodule. In some embodiments, the device comprises a needle configured to deliver the vapor to the lung nodules. An expandable member, such as a balloon, can be provided on a distal portion of the shaft to prevent proximal flow of the high temperature vapor upon discharge from the device. Methods of use are also provided.

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Номер записи: 7
24-10-2013 дата публикации

Skin treatment devices and methods

Номер: US20130282085A1
Автор: Daniel Lischinsky, Yoram Harth
Принадлежит: EndyMed Medical Ltd

A skin treatment device for home use is provided herein. The device has enhanced safety features and improved operation efficiency. RF energy is delivered under strict control to a relatively small and well localized volume of the skin, avoiding excessive heating of the skin surface. Surface heating is monitored both by direct temperature measurement and by movement monitoring of the device to ensure proper use and prevent skin overheating and the pain associated therewith.

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Номер записи: 8
14-11-2013 дата публикации

Enhanced medical device for use in bodily cavities, for example an atrium

Номер: US20130304065A1
Автор: Aldo Antonio Salvestro, Ashkan Sardari, Douglas Wayne GOERTZEN, Fernando Luis De Souza Lopes, Jorge Jaramillo, Peter Josiah Hawes, Saar Moisa
Принадлежит: Kardium Inc

Systems, methods, and devices allow intravascular or percutaneous mapping, orientation or ablation, or combinations thereof in bodily cavities or lumens. A device includes a plurality of elongate members which are moveable between an unexpanded configuration, a bent or coiled stack configuration and an expanded or fanned configuration. The elongate members form a stack arrangement in the unexpanded configuration to fit through a catheter sheath. The elongate members follow respective arcuate or curvilinear paths as advanced from the sheath into the bent or coiled stack configuration, adopting volute, scroll or rho shapes, and may be nested. The elongated members are fanned or radially spaced circumferentially with respect to one another into the expanded or fanned configuration. Transducers carried by elongate members may sense various physiological characteristics of or proximate tissue, for instance temperature, and/or may apply energy to or proximate tissue, for example to perform ablation. The device is retractable.

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Номер записи: 9
16-01-2014 дата публикации

Devices and Systems for Carotid Body Ablation

Номер: US20140018788A1
Автор: Charles Lennox, Howard Levin, Kenneth M. Martin, Marat FUDIM, Mark Gelfand, Mark Leung, Martin M. GRASSE, Marwan Abboud, Michael Brick MARKHAM, Miriam H. Taimisto, Robert Brommer, Scott H. West, Zoar Jacob ENGELMAN
Принадлежит: Cibiem Inc

Methods and endovascular catheters for assessing, and treating patients having sympathetically mediated disease, involving augmented peripheral chemoreflex and heightened sympathetic tone by reducing chemosensor input to the nervous system via transmural carotid body ablation.

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Номер записи: 10
07-01-2021 дата публикации

DEVICES, SYSTEMS, AND METHODS FOR CRYOGENIC BIOPSY SAMPLING

Номер: US20210000521A1
Автор: Dong Jing, Ferrokhi Hamid, Otuya David, Tearney Guillermo J., Verma Yogesh
Принадлежит:

In some embodiments, devices, systems, and methods for cryogenic biopsy sampling are provided. In some embodiments, a device for cryogenic biopsy sampling is provided, the device including: a dual lumen tube; an elongated probe tip coupled to the distal end of the dual lumen tube, with a first lumen extending into a hollow portion in the tip and a second lumen in fluid communication with the hollow portion; a first port in fluid communication with the first lumen; a second port in fluid communication with the second lumen, wherein the first lumen, the elongated probe element, and the second lumen provide a closed pathway through which a substance introduced through the first port can flow through the first lumen into the elongated probe element, and out of the elongated probe element through the second lumen to the second port. 1. A device for cryogenic biopsy sampling , comprising:a dual lumen tube having a proximal end and a distal end; a first lumen of the dual lumen tube extending into a hollow portion of the elongated probe element, and', 'a second lumen of the dual lumen tube being in fluid communication with the hollow portion;, 'an elongated probe element coupled to the distal end of the dual lumen tube,'}a housing coupled to the proximal end of the dual lumen tube;a first port coupled to the housing and in fluid communication with the first lumen; and 'the first lumen, the elongated probe element, and the second lumen providing a closed pathway through which a substance introduced through the first port flows through the first lumen into the elongated probe element and out of the elongated probe element through the second lumen to the second port.', 'a second port coupled to the housing and in fluid communication with the second lumen,'}2. The device for cryogenic biopsy sampling of claim 1 , wherein the elongated probe element comprises aluminum.3. The device for cryogenic biopsy sampling of claim 1 , wherein at least a portion of the inner surface of the ...

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Номер записи: 11
07-01-2021 дата публикации

Medical device for use in bodily lumens, for example an atrium

Номер: US20210000537A1
Автор: Daniel Gelbart, Douglas Wayne GOERTZEN, Fernando Luis De Souza Lopes
Принадлежит: Kardium Inc

A device positionable in a cavity of a bodily organ (e.g., a heart) may discriminate between fluid (e.g., blood) and non-fluid tissue (e.g., wall of heart) to provide information or a mapping indicative of a position and/or orientation of the device in the cavity. Discrimination may be based on flow, or some other characteristic, for example electrical permittivity or force. The device may selectively ablate portions of the non-fluid tissue based on the information or mapping. The device may detect characteristics (e.g., electrical potentials) indicative of whether ablation was successful. The device may include a plurality of transducers, intravascularly guided in an unexpanded configuration and positioned proximate the non-fluid tissue in an expanded configuration. Expansion mechanism may include helical member(s) or inflatable member(s).

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Номер записи: 12
04-01-2018 дата публикации

System and method for testing electrosurgical generators

Номер: US20180000532A1
Автор: II Robert J. Behnke, Peter L. Valentyik, Scott E.M. Frushour
Принадлежит: COVIDIEN LP

A system is provided. The system includes an electrosurgical generator configured to measure, collect and record data pertaining to a characteristic of tissue as the tissue is being electrosurgically treated. A tuner configured to couple to the electrosurgical generator includes a tuning circuit providing a load having a variable complex impedance for the electrosurgical generator when the electrosurgical generator is connected thereto. A controller including stored data pertaining to impedance values is in operable communication with the electrosurgical generator for retrieving the recorded data pertaining to the characteristic of tissue. The controller is in operable communication with the tuner for varying a complex impedance of the load. The controller configured to compare the recorded data pertaining to the at least one characteristic of tissue with the stored data pertaining to the plurality of impedance values and to adjust the tuner to one of the plurality of impedance values.

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Номер записи: 13
05-01-2017 дата публикации

NON-THERMAL PLASMA

Номер: US20170000546A1
Автор: HOLBECHE Thomas Bickford, Mason Rodney Stewart
Принадлежит:

A plasina-generation device for applying plasma to a human body, having a reservoir containing a gas, a plasma zone in fluid connection with the reservoir, and means for generating a plasma by electrical discharge in the plasma zone. The gas has a composition of 92% to 99.5% Helium and 0.5% to 8% Argon; or 95% to 99.5% Helium and 1% to 20% Neon; or 99.95% to 99.99% Helium and 0.01% to 0.05% Oxygen. 1. A plasma-generation device for applying plasma to a human body , the device comprising:a reservoir containing a gas,a plasma zone in fluid connection with the reservoir, andmeans for generating a plasma by electrical discharge in the plasma zone, the gas comprises from 92% to 99.5% Helium and from 0.5% to 8% Argon; or', 'the gas comprises from 95% to 99.5% Helium and from I% to 20% Neon; or', 'the gas comprises from 99.95% to 99.99% Helium and from 0.01% to 0.05% Oxygen., 'wherein2. The plasma-generation device of claim 1 , wherein:the gas comprises from 95% to 99% Helium and from 1% to 5% Argon; orthe gas comprises from 96% to 99% Helium and from 1 to 10% Neon orthe gas comprises from 99.96% to 99.98% Helium and from 0.02% to 0.04% Oxygen.3. The plasma-generation device of claim 1 , wherein the means for generating a plasma comprises a power supply and a dielectric electrode for placing in proximity to a human body claim 1 , and wherein claim 1 , in use claim 1 , the plasma zone is formed between the dielectric electrode and a surface of a human body.4. The plasma.-generation device of claim 1 , wherein the means for generating a plasma comprises a power supply claim 1 , and first and second electrodes claim 1 , and wherein claim 1 , in use claim 1 , the plasma zone is formed between the first and second electrodes and wherein a flow of gas from the reservoir through the plasma zone provides a flow of plasma to contact a surface of a human body.5. The plasma-generation device of claim 1 , wherein the means for generating a plasma comprises a power supply claim 1 , and ...

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Номер записи: 14
01-01-2015 дата публикации

Current Delivery Systems, Apparatuses and Methods

Номер: US20150005759A1
Автор: Daniel Hohm, Richard Shaun Welches
Принадлежит: Cynosure LLC

In part, the disclosure relates to an electromagnetic current displacement apparatus that includes one or more magnetic field sources and an alternating current source. The apparatus includes current delivery electrodes that may be part of a cuff, a hand held device, or individual electrode pads suitable for temporary fixation to skin. In one embodiment, an alternating current is transcutaneously delivered using skin contacting electrodes sized and arranged to avoid hotspots and provide a uniform delivery of the current. In turn, current attractors and repulsors can be arranged on the skin or in a suitable device to push or pull sections of the current that is disposed below such elements. Magnetic fields can be applied and focused to the regions through which the current passes, effectively pushing the current deeper into a target region below the surface of the skin.

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Номер записи: 15
27-01-2022 дата публикации

System(s), method(s) and device(s) for the prevention of esophageal fistula during catheter ablation

Номер: US20220022993A1
Автор: Colin Brahmstedt, Fergus Wong, Matthew Kuhn, William Cohn
Принадлежит: Ethicon Inc

The present invention is directed to systems, devices and methods for trans-septally delivering carbon dioxide through a minimally invasive catheter to create a gaseous pocket or emphysema between the posterior wall of the left atrium and the esophagus during cardiac ablation of the left atrium. This pocket of gas expanded tissue serves to thermally insulate and separate the esophagus from the left atrium during ablation to prevent the formation of an atrial-esophageal fistula. The system comprises a control system to precisely deliver the gas to a desired location through a needle-based catheter assembly.

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Номер записи: 16
16-01-2020 дата публикации

System and Method for Independent or Simultaneous Control of Multiple Radiofrequency Probes During an Ablation Procedure

Номер: US20200015879A1
Автор: Christopher W. THURROTT, Joseph A. Cesa, Lee RHEIN, Lisa M. MCGREGOR, Morgan RUDOLPH, Scott WOODRUFF, Tyler W. CRONE
Принадлежит: Avent Inc

A system and method for delivering energy to a patient's body includes a plurality of probes each having an elongate member with a distal region having an electrically non-conductive outer circumferential portion and a proximal region. Each of the plurality of probes further includes an electrically conductive energy delivery device extending distally from the electrically non-conductive outer circumferential portion for delivering one of electrical and radiofrequency energy to the patient's body. The energy delivery devices further include an electrically conductive outer circumferential surface. The system also includes at least one controller communicatively coupled to each of the plurality of probes. The controller includes a user interface having a control screen. The control screen includes an independent control module and a simultaneous control module that allows a user to select between independent control or simultaneous control of the plurality of probes.

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Номер записи: 17
24-01-2019 дата публикации

APPARATUS AND METHODS OF INDUCING WEIGHT LOSS USING BLOOD FLOW CONTROL

Номер: US20190021890A1
Автор: Asirvatham Samuel J., Bingener-Casey Juliane, Bruce Charles J., Buttar Navtej S., Farrugia Gianrico, Friedman Paul A., Levy Michael J., Rajan Elizabeth, Wong Kee Song Louis-Michel
Принадлежит:

Methods and apparatus for inducing weight loss using blood flow control are described herein. The apparatus and methods operate by controlling blood flow to the stomach and/or small bowel. 112-. (canceled)13. A method of inducing weight loss , the method comprising reducing blood flow to the gastrointestinal tract by ablating one or more blood vessels that supply the stomach and/or small bowel to limit dilation of the blood vessels to increase flow after the ablating.14. A method according to claim 13 , wherein the ablating is configured to cause fibrosis of the one or more blood vessels that supply the stomach and/or small bowel claim 13 , wherein the fibrosis limits dilation of the blood vessels to increase flow.1518-. (canceled)19. A system for inducing weight loss claim 13 , the system comprising:a controller operably connected to one or more input devices, wherein the controller is configured to determine that a patient is ingesting food; andone or more blood flow constriction devices operably connected to the controller, the one or more blood flow constriction devices configured to reduce blood flow to the gastrointestinal tract.20. A system according to claim 19 , wherein the one or more input devices comprise one or more of: a sensor configured to detect distention and/or increased pressure in a stomach claim 19 , a sensor configured to detect swallowing claim 19 , and a sensor configured to detect flow into a stomach.21. A system according to claim 19 , wherein the one or more input devices comprise a direct input device actuated by a patient to provide a signal to the controller that food is being ingested.22. A system according to claim 19 , wherein the one or more blood flow constriction devices comprises a device configured to mechanically constrict one or more blood vessels that supply the stomach and/or small bowel.23. A system according to claim 19 , wherein the one or more blood flow constriction devices comprises a device configured to cool an ...

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Номер записи: 18
01-02-2018 дата публикации

CRYOGENIC BALLOON DEVICE WITH ELECTROPORATION TREATMENT REGION

Номер: US20180028252A1
Автор: LALONDE Jean-Pierre
Принадлежит:

An intravascular ablation device, including a flexible elongate body; an expandable element positioned on the elongate body; a radiofrequency or electroporation treatment segment located distally of the expandable element; a cryogenic coolant source in fluid communication with an interior of the expandable element; and a radiofrequency or electroporation energy source in communication with the radiofrequency or electroporation treatment segment. 1. A method of treating tissue , the method comprising: an elongate catheter body having a proximal portion and a distal portion;', 'an expandable first treatment region coupled to the distal portion of the elongate catheter body; and', 'a second treatment region coupled to the distal portion of the catheter body at a location that is distal to the cryogenic treatment region and defines an outer surface and a distal tip of the medical device;, 'positining a medical device proximate a first tissue area, the medical device includingactivating the expandable first treatment region to create a first treatment pattern in the first tissue area;deactivating the expandable first treatment region;repositioning the medical device such that the second treatment region is proximate a second tissue area; andactivating the second treatment region to treat a second treatment pattern in the second tissue area, the second treatment pattern being different than the first treatment pattern.2. The method of claim 1 , wherein the second treatment region is at least one of a radiofrequency treatment region and an electroporation treatment region.3. The method of claim 1 , wherein the second treatment region includes at least one electrode.4. The method of claim 3 , wherein the second treatment region is an electroporation treatment region.5. The method of claim 4 , further comprising a power source in communication with the at least one electrode and being configured to transmit electrical pulses claim 4 , activation of the second treatment ...

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Номер записи: 19
01-02-2018 дата публикации

Devices, Systems and Methods for Evaluation and Feedback of Neuromodulation Treatment

Номер: US20180028256A1
Автор: Andrew Wu, David Herzfeld, Denise Zarins, Mark S. Leung, Paul Friedrichs, Robert J. Beetel, Sowmya Ballakur
Принадлежит: Medtronic Ardian Luxembourg SARL

The present disclosure relates to devices, systems and methods for evaluating the success of a treatment applied to tissue in a patient, such as a radio frequency ablative treatment used to neuromodulate nerves associated with the renal artery. A system monitors parameters or values generated during the course of a treatment. Feedback provided to an operator is based on the monitored values and relates to an assessment of the likelihood that a completed treatment was technically successful. In other embodiments, parameters or values generated during the course of an incomplete treatment (such as due to high temperature or high impedance conditions) may be evaluated to provide additional instructions or feedback to an operator.

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Номер записи: 20
24-04-2014 дата публикации

Catheter system

Номер: US20140114307A1
Автор: Marius J. Postma, Saar Moisa
Принадлежит: Kardium Inc

A manipulable portion of a catheter system advances out of a lumen of a catheter sheath at a distal end of a shaft, which is also within the lumen of the catheter sheath. The catheter system causes different advancement and retraction trajectories of a manipulable portion out of and into the lumen based at least upon different relative movements between the catheter sheath and the shaft. A projection and a corresponding receiver may be used to control relative positioning of the catheter sheath and the shaft, as well as to control positioning of the manipulable portion. The catheter system may control metering rates of a control element coupled to the manipulable portion during advancement and retraction of the manipulable portion. A control element of the catheter system has varying amounts of length outside a distal end of the catheter sheath during advancement and retraction of the manipulable portion.

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Номер записи: 21
08-02-2018 дата публикации

Medical device for use in bodily lumens, for example an atrium

Номер: US20180036075A1
Автор: Daniel Gelbart, Douglas Wayne GOERTZEN, Fernando Luis De Souza Lopes
Принадлежит: Kardium Inc

A device positionable in a cavity of a bodily organ (e.g., a heart) may discriminate between fluid (e.g., blood) and non-fluid tissue (e.g., wall of heart) to provide information or a mapping indicative of a position and/or orientation of the device in the cavity. Discrimination may be based on flow, or some other characteristic, for example electrical permittivity or force. The device may selectively ablate portions of the non-fluid tissue based on the information or mapping. The device may detect characteristics (e.g., electrical potentials) indicative of whether ablation was successful. The device may include a plurality of transducers, intravascularly guided in an unexpanded configuration and positioned proximate the non-fluid tissue in an expanded configuration. Expansion mechanism may include helical member(s) or inflatable member(s).

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Номер записи: 22
07-02-2019 дата публикации

Instrument For Therapeutically Cytotoxically Ablating Parathyroidal Tissue Within A Parathyroid Gland

Номер: US20190038334A1
Автор: Schwartz Alan N.
Принадлежит:

An instrument for therapeutically cytotoxically ablating parathyroidal tissue is disclosed. A substance is capable of transforming the parathyroid gland from overproduction of parathyroid hormone when the substance's quantity exceeds a set amount, and is capable of transforming the parathyroid gland from overproduction only when activated by application of sufficient units of an electromagnetic energy having a frequency ranging from 400 THz to 30 PHz when the substance's quantity is below the set amount. A delivery device is operable to introduce the substance into the parathyroidal tissue and to quantitatively limit the quantity to below the set amount. An energy device is operable to apply units of the electromagnetic energy after the substance has been introduced. A sensor is operable to monitor the activation of the substance as the electromagnetic energy is applied. The energy device is further operable to modulate applying the electromagnetic energy when the substance has been activated. 1. An instrument for therapeutically cytotoxically ablating parathyroidal tissue within a parathyroid gland , comprising:a substance capable of cytotoxic ablation of a parathyroid gland of a living human, wherein the substance alone is capable of transforming the parathyroid gland from overproduction to non-overproduction of parathyroid hormone when a quantity of the substance exceeds a set amount, and the substance is capable of transforming the parathyroid gland from overproduction to non-overproduction of the parathyroid hormone only when activated in the parathyroidal tissue by application of sufficient units of an electromagnetic energy having a frequency ranging from 400 THz to 30 PHz when the quantity of the substance is below the set amount;a substance delivery device operable to introduce the substance into the parathyroidal tissue and to quantitatively limit the quantity of the substance being introduced to below the set amount;an electromagnetic energy treatment ...

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Номер записи: 23
18-02-2016 дата публикации

Flow rate verification monitor for fluid-cooled microwave ablation probe

Номер: US20160045258A1
Автор: Joseph D. Brannan, Richard A. Willyard
Принадлежит: COVIDIEN LP

A microwave ablation system includes an antenna assembly configured to deliver microwave energy from an energy source to tissue and a coolant source operably coupled to the energy source and configured to selectively provide fluid to the antenna assembly via a fluid path. The system also includes a controller operably coupled to the energy source and a piezoelectric transducer operably coupled to the fluid path to detect a force of fluid flow through the fluid path. The piezoelectric transducer is configured to generate a signal based on the detected force of fluid through the fluid path. The controller is configured to control the energy source output based on the generated signal.

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Номер записи: 24
12-02-2015 дата публикации

Cyrogenic treatment systems

Номер: US20150045780A1
Автор: Benjamin D. Voiles, Brian M. Neil, Daniel R. BURNETT, David Beaulieu, Ric Cote, William W. Malecki
Принадлежит: Channel Medsystems Inc

Methods and apparatus for the treatment of a body cavity or lumen are described where a heated fluid and/or gas may be introduced through a catheter and into treatment area within the body contained between one or more inflatable/expandable members. The catheter may also have optional pressure and temperature sensing elements which may allow for control of the pressure and temperature within the treatment zone and also prevent the pressure from exceeding a pressure of the inflatable/expandable members to thereby contain the treatment area between these inflatable/expandable members. Optionally, a chilled, room temperature, or warmed fluid such as water may then be used to rapidly terminate the treatment session.

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Номер записи: 25
19-02-2015 дата публикации

Surgical forceps including thermal spread control

Номер: US20150051598A1
Автор: J. Bruce Dunne, James H. Orszulak
Принадлежит: COVIDIEN LP

A surgical instrument includes one or more electrically-conductive plates adapted to connect to a source of energy for supplying energy to tissue to treat tissue, a temperature sensing element, and a thermal spread control assembly coupled to the temperature sensing element. The thermal spread control assembly is configured to determine a flow rate of heat energy across the temperature sensing element and to control the energy applied to the electrically-conductive plate and/or control active cooling of the temperature sensing element in accordance with the determined flow rate of heat energy.

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Номер записи: 26
17-03-2022 дата публикации

ELECTROSURGICAL SYSTEM

Номер: US20220079651A1
Автор: Augustus Devon, Elliott Patrick, Nguyen Duy, Pope Ryan, Rodriguez Vincent, Siazon Kevin
Принадлежит:

An electrosurgical system is provided and includes a bipolar electrosurgical instrument and an electrosurgical generator. The bipolar electrosurgical instrument is arranged to seal and cut tissue captured between jaws of the instrument. The jaws include particularly positioned, shaped and/or oriented electrodes to perform the sealing of tissue. The electrosurgical generator is arranged to supply RF energy through the instrument, monitor the supplied RF energy and adjust or terminate the supplied RF energy to optimally seal the tissue. 1. An electrosurgical system comprising:an electrosurgical instrument; and supply RF energy having an initial voltage spike to the electrosurgical instrument, wherein the initial voltage spike has a voltage increasing between a first predetermined voltage level to a second predetermined voltage level,', 'change voltage of the supplied RF energy from the second predetermined voltage level to a third predetermined voltage level with a following voltage ramp up to a fourth predetermined voltage level, wherein the third predetermined voltage level is less than the second predetermined voltage level,', 'monitor current of the supplied RF energy during the following voltage ramp,', 'terminate the following ramp up and hold the voltage of the supplied RF energy at a post-ramp voltage level when the monitored current drops below a pre-determined current threshold, and', 'end the supply of the RF energy to the electrosurgical instrument after holding the voltage of the supplied RF energy at the post-ramp voltage level for a pre-determined period of time., 'an electrosurgical generator removably coupled to the electrosurgical instrument, the electrosurgical generator configured to2. The electrosurgical system of claim 1 , wherein the electrosurgical generator is configured to further monitor for one or more error conditions claim 1 , wherein detection of one of the one or more error conditions causes the supply of RF energy to the ...

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Номер записи: 27
09-03-2017 дата публикации

Systems and methods for arc detection and drag adjustment

Номер: US20170065328A1
Автор: Brian L. Roberts, Craig A. Keller, James A. Gilbert, Robert H. Wham
Принадлежит: COVIDIEN LP

Controlling a level of electrosurgical energy provided to tissue based on detected arcing patterns or impedance changes. The drag force imposed on an electrode or blade of an electrosurgical instrument may be controlled by adjusting the level of electrosurgical energy based on the arcing patterns or impedance changes. The arcing patterns or impedance changes may be detected by sensing and analyzing voltage and/or current waveforms of the electrosurgical energy. The current and/or voltage waveform analysis may involve calculating impedance based on the voltage and current waveforms and calculating changes in impedance over time. The waveform analysis may involve detecting harmonic distortion using FFTs, DFTs, Goertzel filters, polyphase demodulation techniques, and/or bandpass filters. The waveform analysis may involve determining a normalized difference or the average phase difference between the voltage and current waveforms.

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Номер записи: 28
15-03-2018 дата публикации

Ablation electrode assemblies and methods for using same

Номер: US20180071018A1
Автор: Reed R. Heimbecher, Steven C. Christian
Принадлежит: St Jude Medical Atrial Fibrillation Division Inc

Ablation electrode assemblies include an inner core member and an outer shell surrounding the inner core member. The inner core member and the outer shell define a space or separation region therebetween. The inner core member is constructed from a thermally insulative material having a reduced thermal conductivity. In an embodiment, the space is a sealed or evacuated region. In other embodiments, irrigation fluid flows within the space. The ablation electrode assembly further includes at least one thermal sensor in some embodiments. Methods for providing irrigation fluid during cardiac ablation of targeted tissue are disclosed that include calculating the energy delivered to irrigation fluid as it flows within the ablation electrode assembly through temperature measurement of the irrigation fluid. Pulsatile flow of irrigation fluid can be utilized in some embodiments of the disclosure.

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Номер записи: 29
15-03-2018 дата публикации

DEVICES AND METHODS FOR COOLING MICROWAVE ANTENNAS

Номер: US20180071022A1
Автор: Kim Steven, Prakash Mani N., Rossetto Francesca, Turovskiy Roman
Принадлежит:

Devices and methods for cooling microwave antennas are disclosed herein. The cooling systems can be used with various types of microwave antennas. One variation generally comprises a handle portion with an elongate outer jacket extending from the handle portion. A microwave antenna is positioned within the handle and outer jacket such that cooling fluid pumped into the handle comes into contact directly along a portion of the length, or a majority of the length, or the entire length of the antenna to allow for direct convective cooling. Other variations include cooling sheaths which form defined cooling channels around a portion of the antenna. Yet another variation includes passively-cooled systems which utilize expandable balloons to urge tissue away from the surface of the microwave antenna as well as cooling sheaths which are cooled through endothermic chemical reactions. Furthermore, the microwave antennas themselves can have cooling lumens integrated directly therethrough. 1. (canceled)2. A microwave antenna assembly comprising:a feedline including a first conductor;a radiating portion extending from a distal end of the feedline; and an external tubular member extending along a portion of a length of the first conductor and defining a first channel for delivering fluid; and', 'an outer tubular member coaxially aligned with the first conductor, the outer tubular member defining a second channel in fluid communication with the first channel such that fluid is exchangeable therebetween, the first conductor being disposed within the second channel, and a longitudinal axis defined by the outer tubular member being laterally offset from a longitudinal axis defined by the external tubular member., 'a cooling system including3. The microwave antenna assembly of claim 2 , wherein the external tubular member is externally located from the outer tubular member.4. The microwave antenna assembly of claim 2 , wherein the external tubular member is non-electrically ...

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Номер записи: 30
22-03-2018 дата публикации

Design of handle set for ablation catheter with indicators of catheter and tissue parameters

Номер: US20180078300A1
Автор: Belhe Kedar Ravindra, Cao Hong, Hassett James A., Paul Saurav, Thao Riki
Принадлежит:

An electrode coupling output system provides indication to the physician, via electrode guidance instrumentation, concerning the electrical coupling of an electrode, such as an ablative or mapping electrode, with a patient. The output can be provided to the physician via an output device incorporated into the handle set of the electrode catheter. For example, a visual, audio or mechanical output can be provided via the handle set. Additionally or alternatively, the output can be provided to the physician via a navigation system. The indication may be provided by changing the color or other display characteristics of the electrode on the navigation system display or by way of providing a waveform indicating the electrode coupling. In this manner, electrode coupling information is provided to a physician in a manner that minimizes physician distraction. 1. (canceled)2. A method for use with an electrode catheter , the method comprising:passing a sensing current between a reference electrode and an ablation electrode of the electrode catheter while the ablation electrode is disposed within a blood pool of a patient body and is free of contact with tissue of the patient body;measuring a baseline phase angle waveform while the ablation electrode is within the blood pool and free of contact with the tissue of the patient body;after contacting the tissue with the ablation electrode, passing said sensing current between the ablation electrode and the reference electrode in connection with applying ablation energy to the ablation electrode;measuring a current phase angle waveform while the ablation electrode contacts the tissue of the patient;identifying a change between said baseline phase angle waveform and said current phase angle waveform; andgenerating an output based on said change between said baseline phase angle waveform and said phase angle waveform.3. The method of claim 2 , further comprising displaying at least one of:said baseline phase angle waveform;said ...

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Номер записи: 31
22-03-2018 дата публикации

APPARATUS AND METHOD FOR TREATING RHINITIS

Номер: US20180078327A1
Автор: Lin Bryant, Moosavi David, Saadat Mojgan, SAADAT Vahid
Принадлежит:

Devices and methods for treating rhinitis are described where the devices are configured to ablate a single nerve branch or multiple nerve branches of the posterior nasal nerves located within the nasal cavity. A surgical probe may be inserted into the sub-mucosal space of a lateral nasal wall and advanced towards a posterior nasal nerve associated with a middle nasal turbinate or an inferior nasal turbinate into a position proximate to the posterior nasal nerve where neuroablation of the posterior nasal nerve may be performed with the surgical probe. The probe device may utilize a visible light beacon that provides trans-illumination of the sub-mucosal tissue or an expandable structure disposed in the vicinity of the distal end of the probe shaft to enable the surgeon to visualize the sub-mucosal position of the distal end of the surgical probe from inside the nasal cavity using, e.g., an endoscope. 1a surgical probe shaft having an elongated hollow structure with a proximal end and a distal end, wherein the surgical probe shaft is sized for insertion into and advancement within a sub-mucosal space of a lateral nasal wall from within a nasal cavity of a patient;a handle coupled to the proximal end to facilitate handling and positioning of the surgical probe shaft within the nasal cavity;a position indicator disposed in the vicinity of the distal end of the surgical probe shaft to facilitate visual tracking of a position of the distal end of the surgical probe shaft within the sub-mucosal space of the lateral nasal wall; anda cryo-ablation element coupled to the distal end of the surgical probe shaft configured to cryogenically ablate at least one nasal nerve to reduce at least one symptom of rhinitis.. A cryo-surgical probe having a position indicator for treating rhinitis of a patient, the cryo-surgical probe comprising: The present application is a Continuation of U.S. application Ser. No. 14/808,690 filed Jul. 24, 2015, which claims the benefit of U.S. ...

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Номер записи: 32
19-03-2020 дата публикации

Electrosurgical generator

Номер: US20200085488A1
Автор: Daniel Ramin, Stefan SCHIDDEL, Thomas Fähsing
Принадлежит: OLYMPUS Winter and Ibe GmbH

An electrosurgical generator having connectors for an electrosurgical instrument including a high-voltage generator electrically connected to the connectors and produces a high-frequency alternating current in its activated state and output said high-frequency alternating current via the connectors. The electrosurgical generator has an effective power determination unit including a phase shift determination unit that supplies an output signal representing a phase shift between the current and the voltage of an alternating current output during operation. The phase shift determination unit produces a pulsed DC voltage signal, in which the pulse width reflects a time difference between the zero crossings of the current and the voltage—and consequently the phase shift—and to process the pulsed DC voltage signal by way of a low-pass filter to form a low-pass filter output signal, the magnitude of which depends on the pulse width of the pulses of the pulsed DC voltage signal.

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Номер записи: 33
09-04-2015 дата публикации

Blood flow rate measurement device

Номер: US20150099989A1
Автор: Risato KOBAYASHI
Принадлежит: Terumo Corp

A blood flow rate acquisition device which does not require an injection operation for injecting a cooling saline into a blood vessel and can acquire a blood flow rate inside the blood vessel includes an elongated member that is insertable into a blood vessel, a flow velocity measuring member that is disposed in a distal end of a distal end portion of the elongated member in order to measure a flow velocity of blood flow, a cross-sectional area measuring member that is disposed on a side surface in the distal end portion of the elongated member in order to measure a cross-sectional area of a lumen of the blood vessel, and an acquisition device that acquires the blood flow rate by using detection values detected by the flow velocity measuring member and the cross-sectional area measuring member.

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Номер записи: 34
04-04-2019 дата публикации

Electrosurgical apparatus for generating radiofrequency energy and microwave energy for delivery into biological tissue

Номер: US20190099218A1
Автор: Christopher Paul Hancock, Malcolm White, Nuwan DHARMISIRI
Принадлежит: Creo Medical Ltd

An isolating circuit for electrosurgical generator arranged to produce radiofrequency (RF) energy and microwave energy for treating biological tissue. The generator has an RF channel and a microwave channel which are combined at signal combiner to enable the RF energy and microwave energy to be delivered into tissue along a common feed path. The isolating circuit comprises a tunable waveguide isolator at a junction between the microwave channel and signal combiner, and can include a capacitive structure between a ground conductor of the signal combiner and a conductive input section of the waveguide isolator to inhibit coupling of the RF energy and leakage of the microwave energy. The isolating circuit can combine into a single tunable unit all the necessary components to isolate the microwave and RF channels from one another whilst providing a high withstanding voltage.

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Номер записи: 35
04-04-2019 дата публикации

CATHETER HAVING FLEXIBLE TIP WITH MULTIPLE FLEXIBLE SEGMENTS

Номер: US20190099585A1
Автор: de la Rama Alan, Hata Cary
Принадлежит:

A catheter apparatus includes an elongated body having a distal portion including a distal end, a plurality of flexible segments, and at least one intermediate segment that is less flexible than the flexible segments. Adjacent flexible segments are spaced from each other longitudinally by the at least one intermediate segment. Each of the flexible segments include a sidewall having at least one elongated gap extending at least partially therethrough and forming interlocking members. The at least one intermediate segment is shorter than the flexible segments. 138.-. (canceled)39. A catheter apparatus comprising:an elongated body having a distal portion including a sidewall, a distal end, a plurality of flexible segments, and at least one intermediate segment that is less flexible than said flexible segments, wherein adjacent said flexible segments are spaced from each other longitudinally by said at least one intermediate segment, wherein each said flexible segment comprises a sidewall formed of interlocking members, wherein said at least one intermediate segment is shorter than said flexible segments,a lumen extension member having a sidewall and a lumen extending therethrough, said lumen extension member extends beyond a proximal most flexible segment, has a length that does not compromise a flexibility of said distal portion, and is coupled to said distal portion; anda plurality of openings extending through said lumen extension member.40. A catheter in accordance with wherein each said flexible segment comprises an electrode and said at least one intermediate segment comprises a non-conductive member.41. A catheter in accordance with wherein said plurality of openings includes a first set of openings and a second set of openings claim 39 , a size of said openings in said first set being larger than a size of said openings in said second set.42. A catheter in accordance with wherein a size of said openings is configured to provide a substantially constant outflow ...

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Номер записи: 36
19-04-2018 дата публикации

METHODS FOR EVALUATING THE INTEGRITY OF A UTERINE CAVITY

Номер: US20180103999A1
Автор: Bek Robin, FILLOUX Dominique, Mazmudar Tejas N., Toth Akos, Truckai Csaba
Принадлежит:

Methods, systems and devices for evaluating the integrity of a uterine cavity. A method comprises introducing transcervically a probe into a patient's uterine cavity, providing a flow of a fluid (e.g., CO) through the probe into the uterine cavity and monitoring the rate of the flow to characterize the uterine cavity as perforated or non-perforated based on a change in the flow rate. 1. A method of characterizing a patient's uterus , the method comprising:positioning an expandable structure in a patient's uterine cavity, the expandable structure comprising a portion of an energy application system for delivering ablation energy to uterine tissue;expanding the expandable structure within the uterine cavity;introducing a gas into the uterine cavity exterior of expandable structure expanded within the uterine cavity;introducing a gas into the expandable structure as the expandable structure expands;monitoring a flow rate of the gas introduced into the expandable structure as the expandable structure expands;monitoring a flow rate of the gas introduced into the uterine cavity exterior of the expandable structure as the expandable structure expands; anddetermining whether the uterine cavity is perforated or non-perforated based on the monitored flow rate of the gas introduced into the expandable structure and the monitored flow rate of the gas introduced into the uterine cavity exterior of the expandable structure,wherein the uterine cavity is determined as perforated if the flow rate of the gas introduced into the expandable structure impinges the flow rate of the gas introduced into the uterine cavity exterior of the expandable structure.2. The method of wherein the positioning step comprises transcervically introducing a probe into the uterine cavity claim 1 , the probe carrying the expandable structure.3. The method of wherein the gas introduced into the uterine cavity is CO.4. The method of wherein the gas introduced into the expandable structure is Argon.5. The ...

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Номер записи: 37
23-04-2015 дата публикации

Cryocatheter with single phase coolant fluid cooled thermoelectric module and cerebral medical procedures employing local ice ball

Номер: US20150112195A1
Автор: Abraham Berger, Avri Hazan
Принадлежит: Berger Thermal Research Ltd

Cryocatheter including an elongated flexible catheter member having a short rigid catheter tip for introduction into a therapy site and a heat exchange arrangement for freezing the catheter tip to a cryo-temperature from between about −15° C. to about −30° C. for freezing human tissue at the therapy site. Cerebral medical procedures include inter alia employing a local ice ball for sealing a bleeding rupture in an arterial wall in the case of a stroke hemorrhage, employing a local ice ball for mapping electrical disorder foci in a brain, for example, epileptic foci, and the like.

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Номер записи: 38
20-04-2017 дата публикации

Catheter device including flow sensing

Номер: US20170105795A1
Автор: Clifford Liu, Fernando QUIVIRA, John Work, Lauren E. KLINKER, Roozbeh Ghaffari, Stephen P. Lee, Yung-Yu Hsu
Принадлежит: MC10 Inc

Devices and methods are provided for performing an ablation procedure on tissue with flow monitoring using flow sensors. The devices include a catheter, and at least one flow sensor disposed on the catheter, and a component for applying the ablation procedure. An assessment module provides an indication of the efficacy of the ablation procedure based on the flow measurement from the flow sensor.

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Номер записи: 39
20-04-2017 дата публикации

Apparatus and methods of inducing weight loss using blood flow control

Номер: US20170105860A1
Автор: Charles J. Bruce, Elizabeth Rajan, Gianrico Farrugia, Juliane Bingener-Casey, Louis-Michel Wong Kee Song, Michael J. Levy, Navtej S. Buttar, Paul A. Friedman, Samuel J. Asirvatham
Принадлежит: Mayo Foundation for Medical Education and Research

Methods and apparatus for inducing weight loss using blood flow control are described herein. The apparatus and methods operate by controlling blood flow to the stomach and/or small bowel.

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Номер записи: 40
03-07-2014 дата публикации

Methods, apparatus, and systems for tissue dissection and modification

Номер: US20140188111A1
Автор: Paul Joseph Weber
Принадлежит: TDM SURGITECH Inc

Methods, apparatus and systems for tissue dissection and modification are disclosed herein. A method for tissue dissection and modification may comprise inserting a tissue dissecting and modifying wand (TDM) through an incision in a patient's body. The TDM may comprise a tip having a plurality of protrusions with lysing segments positioned between the protrusions to dissect and/or modify tissue. The TDM may also comprise an energy window positioned on top of the TDM that is configured to deliver energy to modify tissues. After separating tissue using the lysing segment(s) to define a target region, the energy window may be activated and moved around within the target region to modify tissues. In some implementations, the energy window may be activated prior to and/or during dissection of the tissue such that the tissue is separated while tissue is modified within the target region.

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Номер записи: 41
11-04-2019 дата публикации

ELECTROSURGICAL SYSTEM

Номер: US20190105096A1
Автор: Albrecht Jeremy, Durant Dan, Elliott Patrick, Gorin Igor, Hudson Kevin, Jacobs Hank, JOHNSON GARY, Kowalski Gerald, Linville-Engler Benjamin, LOGAN Michael, Matthews Thomas, McFarland Daniel, Nguyen Duy, Sabarad Jagdish, Tiberia Lou, Whitlock Michael
Принадлежит:

An electrosurgical generator arranged to supply radio frequency (RF) energy to fuse tissue is provided. The generator is arranged to supply RF energy through a removably coupled electrosurgical instrument to fuse tissue grasped by the instrument. The generator monitors a phase angle of the supplied RF energy and adjusts or terminates the supplied RF energy based on the monitored phase angle in comparison to predetermined thresholds and conditions to optimally fuse the tissue. The electrosurgical instrument conducts radio frequency energy to fuse tissue captured between the jaws and a blade to mechanically cut tissue between the jaws. A conductive post positioned on the jaw adjacent to the blade 1. An electrosurgical system comprising:an electrosurgical instrument arranged to grasp and fuse tissue using radio frequency (RF) energy; andan electrosurgical generator connectable to the electrosurgical instrument and configured to supply the RF energy through the electrosurgical instrument, the generator comprising:an RF amplifier arranged to supply RF energy through the electrosurgical instrument in which voltage of the supplied RF energy is applied in a ramping fashion and subsequently held constant.2. The system of wherein the voltage of the supplied RF energy is held constant at a predetermined voltage.3. The system of further comprising a controller arranged to monitor a phase angle of the supplied RF energy claim 2 , the controller signals the RF amplifier to terminate the supply of RF energy when the monitored phase angle is less than a predefined phase value.4. The system of wherein the predefined phase value is less than zero degrees.5. The system of wherein the voltage of the supplied RF energy applied in a ramping fashion starts from a voltage being 25 percent of a predefined voltage setting to a voltage being 80 percent of the predefined voltage setting.6. The system of wherein the voltage of the supplied RF energy is held constant at its current voltage level ...

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Номер записи: 42
26-04-2018 дата публикации

METHOD AND SYSTEM FOR CONSISTENT, REPEATABLE, AND SAFE CRYOSPRAY TREATMENT OF AIRWAY TISSUE

Номер: US20180110556A1
Автор: Davidson Marc, Fan Wei Li, Hanley Brian M., Mulcahey Thomas, Sheets Ellen E.
Принадлежит:

A method and system for automated and semi-automated predictable, consistent, safe, effective, and lumen-specific and patient-specific cryospray treatment of airway tissue in which treatment duration is automatically set by the system following entry of patient information and treatment location information into the system by the user, and treatment spray is automatically stopped by the system when the automatically selected treatment duration has been achieved as determined by the system. 1. A system comprising:a source of cryogen in fluid communication with a delivery device for the cryogen;one or more valves configured to adjust a flow of the cryogen from the source through the delivery device in response to a control signal;a temperature sensor disposed on the delivery device; and receive temperature information from the temperature sensor;', 'determine a quantity of the flow of the cryogen based on the temperature information; and', 'adjust the control signal to the valves based on the determined quantity., 'a controller configured to2. The system of claim 1 , wherein the temperature information is a rate of change of temperature of the temperature sensor measured in real time during the flow of the cryogen.3. The system of claim 2 , wherein the controller is further configured to determine if the rate of change of temperature is within a threshold safety range.4. The system of claim 3 , wherein the controller is further configured to adjust the control signal to terminate the flow of cryogen when the rate of change is not within the threshold safety range.5. The system of claim 1 , wherein the controller is further configured to receive a user input of at least one location for treatment and to compare the temperature information received from the temperature sensor to a threshold temperature that is based upon the treatment location.6. The system of claim 1 , wherein the controller is further configured to measure an elapsed time of the flow of the cryogen ...

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Номер записи: 43
26-04-2018 дата публикации

SURGICAL OPERATION SYSTEM

Номер: US20180111009A1
Автор: Honda Ryoichi, HONDA Yoshitaka, Mihori Takashi, TANAKA Kazue
Принадлежит: OLYMPUS CORPORATION

A surgical operation system includes a US signal output section, an HV signal output section, a probe having a treatment section which has an HV signal applied thereto and vibrates by ultrasound, an HV signal main controller that performs feedback control of the HV signal output section based on the HV signal, a US signal main controller that performs feedback control of the US signal output section based on a US signal, and an HV signal auxiliary controller that controls the HV signal output section based on the US signal, and has a response time shorter than that of the HV signal main controller. 1. A surgical operation system , comprising: a high-frequency signal output generator configured to output a high-frequency signal; and', 'a high-frequency signal main controller configured to control the high-frequency signal output generator;, 'a high-frequency current signal generating apparatus including;'}a counter electrode plate connected to the high-frequency current signal generating apparatus and configured to recover the high-frequency signal outputted from the high-frequency current signal generating apparatus; a drive signal output generator configured to generate a drive signal; and', 'a drive signal main controller configured to control the drive signal output generator; and, 'an ultrasound transducer drive signal generating apparatus including an ultrasound transducer configured to perform ultrasound vibration by the drive signal;', 'a shaft connected to the ultrasound transducer and configured to transmit the ultrasound vibration; and', 'a treatment portion to which the ultrasound vibration and the high-frequency signal are simultaneously applied, the treatment portion being placed at a distal end of the shaft;, 'a handpiece includingwherein the high-frequency signal is a signal of a coagulation waveform, the high-frequency signal being capable of causing moisture of a parenchyma organ with low impedance to be vaporized, to thereby denature the parenchyma ...

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Номер записи: 44
18-04-2019 дата публикации

Fluid detection assembly for a medical device

Номер: US20190110828A1
Автор: Claude Despatie
Принадлежит: Boston Scientific Scimed Inc

A fluid detection assembly for detecting fluid contamination within a medical device includes a first pair of detection wires and a controller. The first pair of detection wires includes an input first detection wire and a spaced apart output first detection wire that are in fluid communication with one another. The input first detection wire conducts a first electrical signal and the output first detection wire receives the first electrical signal. The controller receives the first electrical signal from the output first detection wire and determines a first propagation delay. The controller can determine a type of fluid contamination, such as blood or saline, based on the first propagation delay. The fluid detection assembly can include a second pair of detection wires that is spaced apart from the first pair of detection wires.

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Номер записи: 45
04-05-2017 дата публикации

Multi-Electrode Apposition Judgment Using Pressure Elements

Номер: US20170119463A1
Автор: Nishant R. Srivastava
Принадлежит: Medtronic Ardian Luxembourg SARL

Apparatus and methods for determining positioning of a energy delivery element include deploying a energy delivery element at a treatment site proximal to a vessel wall; using a multi-region pressure sensing apparatus to sense pressures applied in a plurality of directions about the energy delivery element; and determining an orientation of the energy delivery element based on the pressures measured in the plurality of directions about the energy delivery element.

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Номер записи: 46
24-07-2014 дата публикации

Skin treatment devices and methods

Номер: US20140207217A1
Автор: Daniel Lischinsky, Yoram Harth
Принадлежит: EndyMed Medical Ltd

Radiofrequency (RF) skin treatment devices and methods are provided herein. RF energy is delivered via electrodes in a phase-controlled manner which heats skin volumes below the surface more than the skin surface itself. At least one electrode at least partially encloses at least one other electrode. The combination of controlling the phases of the RF energy delivered to different electrodes and the enclosing configuration of the electrodes allows concentrating the delivered energy in specific regions below the skin surface at a particularly high efficiency. Configurations of the enclosing and the enclosed electrodes, their forms and combinations with other electrodes and the phase polarities applied to the electrodes are also provided.

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Номер записи: 47
10-05-2018 дата публикации

MEASUREMENT AND CONTROL SYSTEMS AND METHODS FOR ELECTROSURGICAL PROCEDURES

Номер: US20180125563A1
Автор: BEHNKE ROBERT
Принадлежит:

An energy delivery system for use in performing a medical procedure is provided. The medical procedure can employ an energy source, the energy source can be connected to an energy delivering device via a transmission line. The energy delivery system can include a measurement system, the measurement system can be configured to sample an output signal generated by the energy source. The energy delivery system includes a control system, which includes a calibration unit. The calibration unit can be configured to generate a calibration signal. The calibration signal can have a magnitude and phase, wherein the magnitude and phase is representative of the output signal and the transmission line loss information. The energy delivery system can also include a control unit, the control unit being configured to receive the calibration signal and adjust the energy source as needed. 114-. (canceled)15. A measurement and control system for use in performing a medical procedure , employing an energy source , the measurement and control system comprising:a measurement system, including a directional coupler configured to sample an output signal generated by the energy source, the output signal having a magnitude and phase; and a calibration unit configured to receive and store loss information for a transmission line, the calibration unit further configured to generate a calibration signal having a magnitude and phase that are representative of the output signal of the measurement system and of the loss information for the transmission line; and', 'a control unit configured to receive the calibration signal and adjust the energy source in response to a value of the calibration signal., 'a control system operatively connected to the measurement system and including16. The measurement and control system according to claim 15 , wherein the transmission line is a coaxial cable.17. The measurement and control system according to claim 15 , wherein the loss information of the ...

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Номер записи: 48
11-05-2017 дата публикации

Gynecological treatment methods

Номер: US20170128127A1
Автор: Eugene Skalnyi
Принадлежит: Minerva Surgical Inc

An energy applicator is introduced to a uterine cavity through an endocervical canal while a gas is being introduced into the uterine cavity. The endocervical canal is sealed, and visually observing a flow rate of the gas allows a user to determine if the seal is effective. Inflation of the cavity facilitates opening of a working end of the applicator within the cavity.

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Номер записи: 49
28-05-2015 дата публикации

SYSTEMS AND METHODS FOR TREATING TISSUE REGIONS OF THE BODY

Номер: US20150148701A1
Автор: Bek Robin, Gaiser John W., Rimroth Patrick, WEST SCOTT
Принадлежит: Mederi Therapeutics Inc

Systems and methods deploy a therapeutic or diagnostic element into contact with a body tissue region. The systems and methods can sense position of the therapeutic or diagnostic element relative to a targeted tissue region without direct or indirect visualization, by sensing fluid pressure in a fluid path having an outlet located at or near the therapeutic or diagnostic element. The systems and methods can also inflate the therapeutic or diagnostic element during use, while taking steps to avoid over-inflation and/or while dynamically monitoring the pressure conditions within the expanded element. 111-. (canceled)12. A method for sensing position of a device relative to a body region based on fluid pressure detection , the method comprising the steps of:a) providing a device having an operative or diagnostic element, a fluid path to convey fluid, and a fluid outlet to body tissue located at or near the operative or diagnostic element, the fluid outlet communicating with the fluid path to output fluid to the body region;b) inserting the device into the body region of a patient;c) providing pressurized fluid through the fluid path of the device to exit the fluid outlet at or near the operative or diagnostic element so the fluid comes into contact with body tissue as the device is moved;d) sensing fluid pressure in the fluid path to detect impeding of fluid from the fluid outlet to sense a position of the device as increased tissue pressure generates a back pressure in the fluid path from the fluid outlet detectable by the sensor;e) indicating to a user the sensed fluid pressure or changes in the sensed fluid pressure to provide an indication of the position of the device relative to the body region; andf) subsequent to step (e) operating the operative or diagnostic element of the device.13. The method of claim 12 , further comprising the step of expanding an expandable basket of the device after sensing fluid pressure claim 12 , the fluid pressure sensed when the ...

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Номер записи: 50
24-05-2018 дата публикации

Systems and methods for selecting, activating, or selecting and activating transducers

Номер: US20180140363A1
Автор: Daniel Martin Reinders, Daniel Robert Weinkam, Jeffery Charles Brewster
Принадлежит: Kardium Inc

Transducer-based systems can be configured to display a graphical representation of a transducer-based device, the graphical representation including graphical elements corresponding to transducers of the transducer-based device, and also including between graphical elements respectively associated with a set of the transducers and respectively associated with a region of space between the transducers of the transducer-based device. Selection of graphical elements and/or between graphical elements can cause activation of the set of transducers associated with the selected elements. Selection of a plurality of graphical elements and/or between graphical elements can cause visual display of a corresponding activation path in the graphical representation. Visual characteristics of graphical elements and between graphical elements can change based on an activation-status of the corresponding transducers. Activation requests for a set of transducers can be denied if it is determined that a transducer in the set of transducers is unacceptable for activation.

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Номер записи: 51
04-06-2015 дата публикации

Systems and methods for endometrial ablation

Номер: US20150150622A1
Автор: Csaba Truckai
Принадлежит: Minerva Surgical Inc

A system for treating uterine tissue having a seal assembly configured for positioning in a patient's cervical canal and uterine cavity; an expandable distal balloon portion; an expandable elongate medial balloon portion configured for movement between a first transversely expanded shape for engaging a cervical canal and a second transversely non-expanded shape for trans-cervical insertion; and a fluid source in communication with distal balloon portion and medial balloon portion for expansion of said balloon portions.

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Номер записи: 52
16-05-2019 дата публикации

SYSTEMS AND METHODS FOR EVALUATING THE INTEGRITY OF A UTERINE CAVITY

Номер: US20190142331A1
Автор: Clapper Dave, Darby Sean, FILLOUX Dominique, Hilario Estela, Mazmudar Tejas N., Toth Akos
Принадлежит: Minerva Surgical, Inc.

A system for accessing a patient's uterine cavity and detecting perforations in the uterus includes an elongated probe having a flow channel extending to a terminal outlet in a distal region of the probe. A fluid source is coupled to the flow channel, and a seal on the probe is positionable in an endocervical canal. The probe may be trans-cervically inserted into the uterine cavity, and a fluid may be introduced through the channel to flow outwardly from the terminal outlet into the uterine cavity. A parameter of said fluid flow is monitored to detect a perforation in the uterus. 1. A method for detecting perforations in a uterus , comprising:providing a probe assembly including a deployable energy applicator at a distal end thereof, said deployable energy applicator having a contracted state and an expanded state, wherein the contracted shape is configured for trans-cervical introduction and the expanded shape has a triangular form with an exterior surface configured for positioning proximate walls of a uterine cavity; andtrans-cervically inserting the probe assembly into the uterine cavity;delivering a fluid flow through a plurality of flow pathways having outlets along a length of the energy applicator including an outlet in a distal tip of the energy applicator; andmonitoring a parameter of said fluid flow to detect a perforation in the uterus.2. The method of wherein the fluid flows outwardly from at least a first distal outlet in a first apex of said triangular form and a second distal outlet in a second apex of said triangular form.3. The method of further comprising positioning a member in the cervical canal to prevent a fluid flow outwardly from the uterine cavity through the cervical canal.4. The method of further comprising delivering and monitoring the fluid flow using a controller.5. The method of wherein the controller is configured to deliver the fluid flow at a rate of between 0.01 slpm and 0.10 slpm.6. The method of wherein the controller is ...

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Номер записи: 53
23-05-2019 дата публикации

THERMAL TREATMENT DEVICES

Номер: US20190151141A1
Автор: Phan Hieu, Taylor Gregory S., Titov Alexey
Принадлежит:

A temperature management device for warming or cooling a person's body includes a device body, which has a fluid conduit for flowing fluid through the device body. The device body includes a contact surface to face and contact the person's body on which the device body is applied and is configured to conform to the person's body wherein the contact surface contacts the person's body and follows a surface topography of the person's body, and further provides a thermally conductive surface for transmitting thermal energy from the fluid flowing through the fluid conduit to the person's body. 1. A temperature management device for warming or cooling a person's body , said temperature management device comprising:a device body, said device body having a fluid conduit for flowing a thermal fluid through said device body;said device body including a contact surface to face and contact the person's body on which said device body is applied; andsaid device body having (1) a granular material or (2) a material that undergoes a state or phase transition when the thermal fluid is flowing through the device body, which is configured to conform to the person's body wherein said contact surface contacts the person's body and follows a surface topography of the person's body and further provides a thermally conductive surface for transmitting thermal energy from the thermal fluid flowing through said fluid conduit to the person's body.2. The temperature management device according to claim 1 , wherein said device body includes a granular material to assist said device body to conform to the person's body claim 1 , optionally said granular material comprising a granular material with a density greater than the density of the fluid.3. The temperature management device according to claim 2 , wherein said granular material comprises a thermally conductive or thermally insulative material.4. The temperature management device according to claim 3 , wherein said granular material ...

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Номер записи: 54
08-06-2017 дата публикации

Multiple use subassembly with integrated fluid delivery system for use with single or dual-lumen peristaltic tubing

Номер: US20170156783A1
Автор: Jennifer McKernon, Ryan Bean, Scott WHEELER, Wesley Joe
Принадлежит: Angiodynamics Inc

The present disclosure relates to systems and methods for regulating, maintaining and/or controlling the temperature of fluids and tissues during therapeutic or ablative tissue treatment applications. In particular, the present disclosure relates to a multi-purpose subassembly that is easy to use, supports all infusion and fluid-cooled ablation systems, and readily and reliably accepts a variety of tubing designs to decrease preparation time and minimize user error during setup and use.

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Номер записи: 55
24-06-2021 дата публикации

Powered endoscopic device with haptic feedback

Номер: US20210186304A1
Автор: Michael S. H. Chu, Sharmad S. Joshi
Принадлежит: Boston Scientific Scimed Inc

An endoscopic deployment device includes a body mountable on an endoscopic device, the body having a movable carrier couplable to an end effector device, the end effector device having an end effector shaft covered by an outer sheath and an end effector extending from a distal end of the end effector shaft, the outer sheath being sized and shaped for insertion through a working channel of the endoscopic device, the body having a carrier channel for the carrier to slide therein, wherein the end effecter is actuatable between an open position and a closed position; and a motor having a drive shaft coupled to the carrier, rotation of the drive shaft sliding the carrier in the carrier channel and actuating the end effector in response to a signal from one or more actuation buttons; wherein at least one vibration motor generates vibrations as an angular position of the motor changes.

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Номер записи: 56
21-05-2020 дата публикации

ELECTROSURGICAL SYSTEM

Номер: US20200155219A1
Автор: Augustus Devon, Elliott Patrick, Nguyen Duy, Pope Ryan, Rodriguez Vincent, Siazon Kevin
Принадлежит:

An electrosurgical system is provided and includes a bipolar electrosurgical instrument and an electrosurgical generator. The bipolar electrosurgical instrument is arranged to seal and cut tissue captured between jaws of the instrument. The jaws include particularly positioned, shaped and/or oriented electrodes to perform the sealing of tissue. The electrosurgical generator is arranged to supply RF energy through the instrument, monitor the supplied RF energy and adjust or terminate the supplied RF energy to optimally seal the tissue. 1. An electrosurgical system comprising:an electrosurgical instrument having a handle assembly and jaws connected to the handle assembly; andan electrosurgical generator removably coupled to the electrosurgical instrument, the electrosurgical generator configured to supply RF energy to the electrosurgical instrument starting at a predefined first voltage and increasing to a predefined second voltage within a predetermined first time period.2. The system of wherein the generator is configured to adjust voltage of the supplied RF energy to start at a predefined third voltage.3. The system of wherein the generator is configured to adjust voltage of the supplied RF energy to start at a predefined third voltage after an expiration of the predetermined first time period.4. The system of wherein the generator is configured to adjust voltage of the supplied RF energy to start at a predefined third voltage after voltage of the supplied RF energy reaches the predefined second voltage.5. The system of wherein the generator is configured to adjust voltage of the supplied RF energy to increase from the predefined third voltage to a predefined fourth voltage within a predetermined second time period.6. The system of wherein the predetermined first time period is shorter than the predetermined second time period.7. The system of wherein the predefined fourth voltage is greater than the predefined third voltage.8. The system of wherein the predefined ...

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Номер записи: 57
21-06-2018 дата публикации

NEUTRAL DRIVE FEEDBACK LOOP COMPENSATION FOR DETECTED ELECTROSURGICAL UNIT SIGNAL

Номер: US20180168708A1
Автор: Bakalos Pericles Nicholas
Принадлежит:

Methods and apparatuses are provided for neutral drive feedback loop compensation of detected electrosurgical unit signals. An apparatus includes an electrosurgery unit (ESU) signal detection circuit, a compensation switch, and an ESU filter switch. Both switches activate based on an output of the ESU signal detection circuit. A neutral drive feedback loop circuit is configured to compensate for a phase change characteristic of an ESU filter circuit. 1. An apparatus comprising:an electrosurgery unit (ESU) signal detection circuit;a compensation switch and an ESU filter switch both electrically coupled to an output of the ESU signal detection circuit; anda neutral drive feedback loop circuit configured, based on the compensation switch being in an active state, to compensate for a phase change characteristic of an ESU filter circuit activated by the ESU filter switch being in an active state.2. The apparatus according to claim 1 , wherein the ESU signal detection circuit comprises:a peak voltage detector configured to measure an ESU voltage level;a threshold circuit configured to set a threshold voltage for comparison with the measured ESU voltage level; andan ESU signal operational amplifier configured to compare the threshold voltage and the measured ESU voltage level.3. The apparatus according to claim 2 , wherein the peak voltage detector comprises:a series resistor-capacitor (RC) circuit, wherein an electrode input signal is connected to a resistor of the series RC circuit;a parallel inductor diode circuit having a first diode and an inductor, the parallel inductor diode circuit electrically coupled between a capacitor of the series RC circuit and earth ground;a second diode electrically coupled in series with the parallel inductor diode circuit, wherein an anode end of the second diode is connected to a cathode end of the first diode; and a parallel RC circuit electrically coupled between a cathode end of the second diode and earth ground,wherein the measured ...

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Номер записи: 58
06-06-2019 дата публикации

THERMAL CONTROL SYSTEM

Номер: US20190167470A1
Автор: Campbell Jonathan David, Constant Marco, Holmberg Roy E., Hopper Christopher John, Schultz Brian
Принадлежит:

A thermal control unit for delivering temperature-controlled fluid to one or more patient therapy devices (e.g. pads, blankets, etc.) that are in contact with a patient is disclosed. The thermal control unit allows multiple patient therapy devices to be fluidly coupled thereto and to individually monitor the temperatures, flow rates, and/or connections/disconnections of the patient therapy devices. A user interface enables a user to designate outlet ports to the therapy devices as active or inactive, and the control unit provides notifications to the user if any of the active ports experience an undesired condition, or if a patient therapy device is connected to an inactive port. The user interface further allows the user to designate one of multiple patient temperature probes as a primary probe. The primary probe is used to control the temperature of the fluid circulating through the control unit. 1. A thermal control unit comprising:a first fluid outlet adapted to fluidly couple to a first fluid supply line;a second fluid outlet adapted to fluidly couple to a second fluid supply line;a first fluid inlet adapted to fluidly couple to a first fluid return line;a second fluid inlet adapted to fluidly couple to a second fluid return line;a heat exchanger;a pump for circulating fluid from the first and second fluid inlets through the heat exchanger and to the first and second fluid outlets;a sensing subsystem adapted to detect if the first fluid outlet becomes disconnected from the first fluid supply line and if the second fluid outlet becomes disconnected from the second fluid supply line; anda controller in communication with the pump, the heat exchanger, and the sensing subsystem, the controller adapted to provide a first indication to a user if the first fluid outlet becomes disconnected from the first fluid supply line and to provide a second indication to the user if the second fluid outlet become disconnected from the second fluid supply line.2. The thermal ...

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Номер записи: 59
08-07-2021 дата публикации

System, apparatus, and method for powering a bipolar energy controller

Номер: US20210204997A1
Автор: Scott E.M. Frushour
Принадлежит: COVIDIEN LP

A power device is configured couple to an electrosurgical generator (410). The power device includes at least one connector (420, 422, 423, 510, 511), a rectifier (113), an energy storage device (115), and a bipolar energy controller (101). The at least one connector (420, 422, 423, 510, 511) is configured to couple to the electrosurgical generator (410) and receive electrosurgical energy. The rectifier (113) is configured to rectify at least a portion of the electrosurgical energy and provide rectified energy. The energy storage device (115) is configured to store at least a portion of the rectified energy. The bipolar energy controller (101) is configured to be powered by the energy storage device (115) and to control providing of an output bipolar energy.

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Номер записи: 60
29-06-2017 дата публикации

Estimating a temperature during ablation

Номер: US20170181794A1
Автор: Andres Claudio Altmann, Assaf Govari, Yaron Ephrath
Принадлежит: Biosense Webster Israel Ltd

A method for use with an intra-body probe, a distal end of which includes an ablation electrode and a temperature sensor, is described. While (i) the ablation electrode is driving an ablating current into tissue of a subject, and (ii) fluid is passed from the distal end of the intra-body probe at a fluid-flow rate, a processor receives a temperature sensed by the temperature sensor. The processor estimates a temperature of the tissue, based at least on the sensed temperature and at least one parameter selected from the group consisting of: the fluid-flow rate, and a parameter of the ablating current. The processor generates an output in response to the estimated temperature. Other embodiments are also described.

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Номер записи: 61
18-09-2014 дата публикации

Quantification of renal denervation via alterations in renal blood flow pre/post ablation

Номер: US20140276124A1
Автор: Martin Cholette, Sergio Shkurovich
Принадлежит: St Jude Medical Cardiology Division Inc

A renal denervation catheter includes a catheter shaft, at least one ablation member, and a sensor, and is operable to perform a renal denervation procedure. The catheter shaft includes a distal end portion insertable into a renal artery. The at least one ablation member is positioned at the distal end portion of the catheter shaft and operable to ablate renal nerves along a wall of the renal artery. The sensor provides information that correlates to blood flow in the renal artery. A change in blood flow rate in the renal artery resulting from the ablation is indicative of the efficacy of the renal denervation procedure.

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Номер записи: 62
18-09-2014 дата публикации

Feedback systems and methods utilizing two or more sites along denervation catheter

Номер: US20140276746A1
Автор: Edward Karst, Kritika Gupta, Stuart Rosenberg, Xiaoyi Min, Yelena Nabutovsky
Принадлежит: St Jude Medical Cardiology Division Inc

A renal denervation system includes a renal denervation catheter and a flow determining system. The renal denervation catheter includes a plurality of ablation members positioned at a distal end portion thereof. The renal denervation catheter is insertable into a renal artery. The flow determining system includes a processor and first and second flow determining members spaced apart on the renal denervation catheter. The processor is configured to determine a change in blood flow through the renal artery resulting from a renal denervation procedure using the renal denervation catheter in response to input from the first and second flow determining members.

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Номер записи: 63
16-07-2015 дата публикации

Systems and methods for multifrequency cable compensation

Номер: US20150196349A1
Автор: Alexander M. Waskiewicz, Andrey Y. Belous, Anthony D. Ricke, Robert H. Wham
Принадлежит: COVIDIEN LP

The electrosurgical systems and methods of the present disclosure perform cable compensation using an electrosurgical generator that includes a plurality of sensors configured to sense voltage and current waveforms, a plurality of medium-band filters, a plurality of narrowband filters, and a signal processor. The plurality of medium-band filters and narrowband filters pass sensed voltage and current waveforms at a plurality of predetermined frequencies. The signal processor calculates medium-band RMS voltage and current values using the output from the plurality of medium-band filters, calculates narrowband phase and magnitude values using the output from the plurality of narrowband filters, calculates tissue impedance based on the medium-band RMS voltage and current values and the narrowband phase value, and generates a control signal to control the energy generated by the electrosurgical generator based on the calculated tissue impedance.

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Номер записи: 64
12-07-2018 дата публикации

DEVICE AND METHOD OF ABLATIVE CUTTING WITH HELICAL TIP

Номер: US20180193095A1
Автор: Grace Kenneth P., Hendrick Brandon Thomas
Принадлежит:

Catheter devices for ablation and removal of occlusions from blood vessels and methods of using the same are provided. Catheter devices are useful to ablate, cut, dislodge, and otherwise remove occlusions within a blood vessel that may limit or prevent proper circulation. Distal features of the catheter devices comprise arrangements of laser ablative or mechanical cutting features that generally provide enhanced surface areas and cutting functions. Spiral or helical arrangements are provided to aid in cutting operations. 120-. (canceled)21. A catheter assembly , comprising: a distal tip comprising a helical configuration, the helical configuration comprising a first terminus and a second terminus, the second terminus being disposed distally relative to the first terminus;', 'a lumen disposed interiorly to the helical configuration and extending proximally from the distal tip; and', 'an orifice forming an entrance to the lumen; and, 'a catheter comprisinga plurality of optical fibers comprising distal ends, the distal ends being disposed in the helical configuration of the distal tip.22. The catheter assembly of claim 21 , wherein the distal tip further comprises a surface connecting the first terminus of the helical configuration to the second terminus of the helical configuration.23. The catheter assembly of claim 22 , wherein the surface is parallel with a longitudinal axis of the catheter.24. The catheter assembly of claim 22 , wherein the surface is a sharp cutting surface.25. The catheter assembly of claim 24 , wherein the sharp cutting surface is parallel with a longitudinal axis of the catheter.26. The catheter assembly of claim 24 , wherein the sharp cutting surface is a blade.27. The catheter assembly of claim 26 , wherein the blade is parallel with a longitudinal axis of the catheter.28. The catheter assembly of claim 22 , wherein the helical configuration and the distal ends of the plurality of optical fibers extend 360 degrees about a longitudinal axis ...

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Номер записи: 65
12-07-2018 дата публикации

SYSTEMS, DEVICES AND METHODS FOR PERFORMING MEDICAL PROCEDURES IN THE INTESTINE

Номер: US20180193590A1
Автор: Caplan Jay, FLAHERTY J. Christopher, Gardner Craig M., Rajagopalan Harith
Принадлежит: Fractyl Laboratories, Inc.

A method for performing a medical procedure in an intestine of a patient is provided. The method comprises providing a system comprising: a catheter for insertion into the intestine, the catheter comprising: an elongate shaft comprising a distal portion; and a functional assembly positioned on the shaft distal portion and comprising at least one treatment element. The catheter is introduced into the patient, and target tissue is treated with the at least one treatment element. The target tissue comprises mucosal tissue of the small intestine, and the medical procedure can be configured to treat at least one of non-alcoholic fatty liver disease (NAFLD) or non-alcoholic steatohepatitis (NASH). 1. A method for performing a medical procedure in an intestine of a patient , comprising:selecting a patient diagnosed with at least one of non-alcoholic fatty liver disease (NAFLD) or non-alcoholic steatohepatitis (NASH);providing a system comprising:a catheter for insertion into the intestine, the catheter comprising:an elongate shaft comprising a distal portion; anda functional assembly positioned on the shaft distal portion and comprising at least one treatment element;introducing the catheter into the patient diagnosed with at least one of NAFLD or NASH; andtreating target tissue with the at least one treatment element, wherein the target tissue comprises mucosal tissue of the patient's small intestine;wherein the medical procedure is configured to treat the at least one of NAFLD or NASH.2. The method according to claim 1 , wherein the medical procedure is further configured to treat insulin resistance.3. The method according to claim 1 , wherein the medical procedure is further configured to treat a disease or disorder selected from the group consisting. of: Type 2 diabetes; Type 1 diabetes; “Double diabetes”; gestational diabetes; hyperglycemia; pre-diabetes; impaired glucose tolerance; insulin resistance; and combinations thereof.4. The method according to claim 1 , ...

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Номер записи: 66
18-06-2020 дата публикации

SYSTEM AND METHOD FOR ASSESSING LESIONS IN TISSUE

Номер: US20200188016A1
Автор: Deno Don Curtis, Miller Stephan P., Paul Saurav, Teplitsky Liane R.
Принадлежит:

A method and system for assessing lesion formation in tissue is provided. The system includes an electronic control unit (ECU). The ECU is configured to acquire values for first and second components of a complex impedance between the electrode and the tissue, and to calculate an index responsive to the first and second values. The ECU is further configured to process the ECI to assess lesion formation in the tissue. 128-. (canceled)29. A method for assessing a degree of coupling between an electrode on an elongate medical device and tissue in a body , the method comprising:acquiring, by an electronic control unit (ECU), a phase angle value of a complex impedance between the electrode and the tissue responsive to an output of a complex impedance sensor;calculating, by the ECU, an electrical coupling index responsive to at least the phase angle value and indicative of a degree of electrical coupling between the electrode and the tissue in the body;acquiring, by the ECU, a force measurement, responsive to an output of a force sensor, indicative of a degree of force exerted between the electrode and the tissue in the body; anddetermining, by the ECU, a degree of coupling between the electrode and the tissue in the body based on the electrical coupling index and the force measurement;wherein determining the degree of coupling between the electrode and the tissue in the body comprises determining when the electrode moves from a position of no contact to a position of contact with the tissue.30. The method of claim 29 , wherein calculating the electrical coupling index comprises calculating claim 29 , by the ECU claim 29 , the electrical coupling index based on at least the phase angle value and an additional parameter.31. The method of claim 30 , wherein the additional parameter comprises one or more of a temperature of the body claim 30 , an electrolyte concentration in the body claim 30 , and a size of the electrode.32. The method of claim 29 , further comprising ...

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Номер записи: 67
28-07-2016 дата публикации

Catheter or guidewire device including flow sensing and use thereof

Номер: US20160213424A1
Автор: John A. Wright, Jr., John Work, Lauren Klinker, Roozbeh Ghaffari, Stephen Lee
Принадлежит: MC10 Inc

Devices and methods are provided for performing procedure on tissue with flow monitoring using flow sensors. The devices include an elongated member, and at least one flow sensor disposed on the elongated member. The flow sensor includes at least one temperature sensor and at least one heating element having a cavity. At least a portion of the at least one temperature sensor is housed in the cavity. A temperature measurement of the temperature sensor provides an indication of the flow rate of a fluid proximate to the flow sensor.

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Номер записи: 68
06-08-2015 дата публикации

Systems and methods for activating transducers

Номер: US20150216584A1
Автор: Danai Bisalputra, Daniel Martin Reinders, Daniel Robert Weinkam, Roxanne Wai Tak Louie
Принадлежит: Kardium Inc

Transducer-based systems and methods may be configured to display a graphical representation of a transducer-based device, the graphical representation including graphical elements corresponding to transducers of the transducer-based device, and also including between graphical elements respectively associated with a set of the transducers and respectively associated with a region of space between the transducers of the transducer-based device. Selection of graphical elements and/or between graphical elements can cause activation of the set of transducers associated with the selected elements. Transducer activation characteristics, such as initiation time, activation duration, activation sequence, and energy delivery characteristics, can vary based on numerous factors. Visual characteristics of graphical elements and between graphical elements can change based on an activation-status of the corresponding transducers. Activation requests for a set of transducers can be denied if it is determined that a transducer in the set of transducers is unacceptable for activation.

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Номер записи: 69
25-06-2020 дата публикации

Flow Rate Control for a Cooled Medical Probe Assembly

Номер: US20200197066A1
Автор: Wang Ruoya
Принадлежит:

Cooling systems for medical probe assemblies are provided. For example, a cooling system comprises a pump assembly including a control unit having a controller, a motor, and a pump head driven by the motor; a fluid reservoir; a lumen for delivering a cooling fluid to the medical probe assembly distal end; tubing extending through the pump head for conveying the cooling fluid from the fluid reservoir to the lumen; and a flow sensor for sensing the cooling fluid flow rate. The pump head is disposed between the fluid reservoir and the medical probe assembly to pump the cooling fluid from the fluid reservoir to the lumen. The flow sensor is disposed between the pump head and the medical probe assembly to sense the cooling fluid flow rate. Methods for controlling fluid flow rate through a cooling circuit and systems for using a plurality of medical probe assemblies also are provided.

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Номер записи: 70
26-07-2018 дата публикации

ELECTROSURGICAL INSTRUMENTS AND CONNECTIONS THERETO

Номер: US20180206909A1
Автор: Brustad John, Elliott Patrick, Falkenstein Zoran, JOHNSON GARY, Linville-Engler Benjamin, Wixey Matthew
Принадлежит:

An electrosurgical instrument includes jaws having an electrode configuration utilized to electrically modify tissue in contact with one or more electrodes. The instrument is removably connectable to an electrosurgical unit via an electrosurgical connector extending from the instrument and a receptacle on the electrosurgical unit. The electrosurgical instrument is rotatable without disrupting electrical connection to the electrodes of the jaws. One or more of the electrodes is retractable. The electrosurgical unit and instrument optimally seals and/or cuts tissue based on identifying the tissue and monitoring the modification of the tissue by the application of radio frequency energy. 1. An electrosurgical system comprising an elongate shaft;', 'an actuator coupled to the elongate shaft; and', 'first and second jaws coupled to the elongate shaft, the first jaw comprising a first electrode, the second jaw comprising a second electrode and a third electrode, and the actuator arranged to open and close the first and second jaws; and, 'an electrosurgical instrument comprisingan electrosurgical generator arranged to supply radiofrequency (RF) energy to the electrosurgical instrument removably coupled to the electrosurgical generator, the generator being arranged to supply RF energy between the first electrode and the second electrode, determine a phase value of the supplied RF energy and to determine when the determined phase value of the supplied RF energy equals or exceeds a predetermined phase value; and the generator, after determining the determined phase value of the supplied RF energy equals or has exceeded the predetermined phase value, is arranged to supply RF energy between the second and third electrodes instead of the first and second electrodes and to increase voltage of the supplied RF energy between the second and third electrodes.2. The system of wherein:the first jaw comprises a fourth electrode being outside the first and second jaws and not between the ...

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Номер записи: 71
26-07-2018 дата публикации

IRRIGATED ABLATION ELECTRODE ASSEMBLIES

Номер: US20180206912A1
Автор: Christian Steven C.
Принадлежит:

An irrigated ablation electrode assembly comprises a distal member, a first manifold, and a second manifold. The distal member includes an outer surface; an inner surface; and at least one radially extending passageway that extends from the inner surface of the distal member to the outer surface of the distal member. The first manifold includes an outer surface, an inner cavity, and at least one radially extending passageway that extends from the inner cavity to the outer surface of the first manifold. The second manifold includes an outer surface, an inner surface, and at least one radially extending passageway that extends from the inner surface of the second manifold to the outer surface of the second manifold. Other irrigated ablation electrode assemblies are also presented. 140-.(canceled)41. An irrigated ablation electrode assembly comprising:a body comprising a distal portion and a proximal portion, wherein the distal portion defines at least one irrigation port configured to direct irrigation fluid proximally.42. The assembly of claim 41 , wherein the distal portion of the body further defines at least one axially extending passageway claim 41 , and the at least one irrigation port is configured to direct a fluid from the at least one axially extending passageway.43. The assembly of claim 42 , wherein the at least one axially extending passageway extends for substantially a length of the distal portion of the body.44. The assembly of claim 41 , wherein the distal portion of the body comprises a distal portion outer diameter; the proximal portion of the body comprises a proximal portion outer diameter; and the distal portion outer diameter is larger than the proximal portion outer diameter.45. The assembly of claim 41 , further comprising a cap comprising a first portion that is disposed within a bore in the distal portion of the body and a second portion that extends outside the body claim 41 , wherein the second portion of the cap includes at least one ...

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Номер записи: 72
05-08-2021 дата публикации

Adaptive blend of electrosurgical cutting and coagulation

Номер: US20210236189A1
Автор: Jeffrey J. Nelson, Kester Julian Batchelor, Richard J. Curtis
Принадлежит: Gyrus ACMI Inc

An electrosurgical system can include a surgical device configured to adjust energy delivery in accordance with a specified cutting-to-coagulation relationship. The specified cutting-to-coagulation relationship can be determined based at least in part on an impedance or other parameter associated with tissue or an environment at or near the one or more electrodes. The specified cutting-to-coagulation relationship can be determined automatically (e.g., without requiring user input) and adaptively based on the sensing, such as in real-time as the therapy progresses.

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Номер записи: 73
02-07-2020 дата публикации

Adjusting Phases of Multiphase Ablation Generator to Detect Contact

Номер: US20200205876A1
Автор: Assaf Govari
Принадлежит: Biosense Webster Israel Ltd

A radio frequency ablation system, includes a single frequency RF signal generator, control circuitry configured to set phases and amplitudes of a plurality of replicas of the RF signal, a plurality of non-linear amplifiers, configured to amplify the plurality of replicas of the RF signal, and to drive a respective plurality of ablation electrodes in a patient body with the amplified replicas. A processor is configured to receive a superposition of the plurality of replicas as a return signal from a body surface patch electrode, and to adaptively adjust phases and amplitudes of the amplified replicas in response to the return signal with the control circuitry to zero crosstalk currents. In a tissue contact check mode of operation the phases of the amplified replicas are identical, and in an ablation mode of operation the phases of the amplified replicas differ from one another.

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Номер записи: 74
02-07-2020 дата публикации

Irrigation Pump with Ablation and Non-Ablation Operational Modes

Номер: US20200206410A1
Автор: Assaf Govari, Gili ATTIAS, Ilya Sitnitsky, Yehuda Algawi
Принадлежит: Biosense Webster Israel Ltd

A pump includes a cylinder, a piston and a controller. The cylinder has first and second ends and includes first and second inlet-outlet ports, each of the first and second inlet-outlet ports is configured to alternately intake a fluid to the cylinder and output the fluid from the cylinder. The piston is configured to be moved within the cylinder between the first and second ends by alternately reversing a direction of movement of the piston, so as to pump the fluid through the first and second inlet-outlet ports. The controller is configured to control the movement of the piston within the cylinder, including: (a) choosing between first and second operational modes, (b) in the first operational mode, controlling the piston to oscillate over a predefined interval that does not exceed a predefined distance from the first end or from the second end, and (c) in the second operational mode, controlling the piston to move at a selected speed between the first end and the second end.

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Номер записи: 75
16-10-2014 дата публикации

Methods for tissue ablation measurement and control and devices thereof

Номер: US20140309632A1
Автор: Alireza Yavari, Steven Meyer, Wayne Ogata, Xiang Ian Gu
Принадлежит: RetroVascular Inc

An apparatus comprises a first longitudinal member and a second longitudinal member configured to be located near a tissue region. An energy source is coupled to first longitudinal member and second longitudinal member. A measuring device is configured to measure at least one characteristic of the tissue region. An energy controller is coupled to the energy source and the measuring device. The energy controller includes a processor coupled to a memory and configured to execute programmed instructions stored in the memory, comprising initiating a delivery of energy to the tissue region from the energy source. One or more items of data are received from the measuring device based on the delivery of energy to the tissue region. The delivery of energy to the tissue region is adjusted based on the one or more items of data.

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Номер записи: 76
09-08-2018 дата публикации

SYSTEMS, DEVICES AND METHODS FOR PERFORMING MEDICAL PROCEDURES IN THE INTESTINE

Номер: US20180221622A1
Автор: Caplan Jay, FLAHERTY J. Christopher, Gardner Craig M., Rajagopalan Harith
Принадлежит: Fractyl Laboratories, Inc.

A method for performing a medical procedure in an intestine of a patient is provided. The method comprises providing a system comprising: a catheter for insertion into the intestine, the catheter comprising: an elongate shaft comprising a distal portion; and a functional assembly positioned on the shaft distal portion and comprising at least one treatment element. The catheter is introduced into the patient, and target tissue is treated with the at least one treatment element. The target tissue comprises mucosal tissue of the small intestine, and the medical procedure can be configured to treat polycystic ovarian syndrome (PCOS). 1. A method for treating a patient diagnosed as having polycystic ovarian syndrome , said method comprising:treating a target mucosal tissue of the patient's small intestine to modify at least one of nutrient absorption by the target mucosal tissue, hormonal signaling from the target mucosal tissue, or secretions of the target tissue, wherein the treatment is configured to treat polycystic ovarian syndrome.2. The method according to claim 1 , wherein the medical procedure is further configured to treat insulin resistance.3. The method according to claim 1 , wherein the medical procedure is further configured to treat a disease or disorder selected from the group consisting of: Type 2 diabetes;Type 1 diabetes; “Double diabetes”; gestational diabetes; hyperglycemia; pre-diabetes; impaired glucose tolerance; insulin resistance; and combinations thereof.4. The method according to claim 1 , wherein treatment is performed with a system comprising:a catheter for insertion into the intestine, the catheter comprising:an elongate shaft comprising a distal portion;a functional assembly positioned on the shaft distal portion and comprising at least one treatment element; anda console operably attached to the functional assembly, and wherein the console comprises one or more variable console parameters used to control the functional assembly;and wherein ...

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Номер записи: 77
30-08-2018 дата публикации

Ablation Catheter with Sensor System for Detecting the Ablation Success

Номер: US20180243031A1
Автор: Kai Ulf Markus
Принадлежит: VIMECON GmbH

An ablation catheter for ablation of biological tissue, including at least one optical fiber for transporting laser light along the ablation catheter and at least one coupling-out region for decoupling the laser light transported by the optical fiber from the catheter. A sensor system that continuously detects parameters, from which ablation success can be determined.

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Номер записи: 78
31-08-2017 дата публикации

Flow rate verification monitor for fluid-cooled microwave ablation probe

Номер: US20170245932A1
Автор: Joseph D. Brannan, Richard A. Willyard
Принадлежит: COVIDIEN LP

A microwave ablation system includes an antenna assembly configured to deliver microwave energy from an energy source to tissue and a coolant source operably coupled to the energy source and configured to selectively provide fluid to the antenna assembly via a fluid path. The system also includes a controller operably coupled to the energy source and a piezoelectric transducer operably coupled to the fluid path to detect a force of fluid flow through the fluid path. The piezoelectric transducer is configured to generate a signal based on the detected force of fluid through the fluid path. The controller is configured to control the energy source output based on the generated signal.

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Номер записи: 79
08-08-2019 дата публикации

TISSUE SAMPLING AND CATHETER SELECTION CANCER TREATMENT METHODS

Номер: US20190240505A1
Автор: ALJURI Nikolai, Mantri Surag
Принадлежит: PROCEPT BioRobotics Corporation

A catheter treatment apparatus comprises an elongate tubular member and an expandable support. The expandable support comprises a radioactive substance to treat cancerous tissue and is configured to expand from a narrow profile for insertion to a wide profile to engage and treat tissue remaining after resection. The expandable support can be sized to fit within a volume of removed tissue to place the radioactive substance in proximity to the capsule and remaining tissue, to spare the capsule and proximate nerves and vessels to treat tissue in proximity to the capsule. The elongate tubular member may comprise a channel such as a lumen to pass a bodily fluid such as urine when the expandable support engages the tissue to treat the patient for a plurality of days. The treatment apparatus can be used to resect and diagnose tissue concurrently. Based on the diagnosis, targeted segmental treatment may be given. 1. A method of treating a patient , the method comprising:removing a sample of a tissue from the patient using a water jet source;placing a first catheter or a second catheter in the patient subsequent to removing the sample, the first catheter comprising a radioactive substance to treat a cancer of the patient subsequent to surgery, the second catheter without the radioactive substance for cancer treatment; andreceiving the sample using a device, and determining using the device whether the patient has the cancer in order to select the first catheter or the second catheter for placement in the patient.2. The method of claim 1 , comprising: using the first catheter comprising the radioactive substance to treat the cancer of the patient subsequent to surgery.3. The method of claim 1 , comprising: using the second catheter without the radioactive substance to treat the patient subsequent to surgery.4. The method of claim 1 , comprising: determining whether the patient has the cancer in order to select the first catheter or the second catheter for placement in the ...

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Номер записи: 80
15-08-2019 дата публикации

System(s), method(s) and device(s) for the prevention of esophageal fistula during catheter ablation

Номер: US20190247139A1
Автор: Colin Brahmstedt, Fergus Wong, Matthew Kuhn, William Cohn
Принадлежит: Ethicon Inc, Johnson and Johnson Vision Care Inc

The present invention is directed to systems, devices and methods for trans-septally delivering carbon dioxide through a minimally invasive catheter to create a gaseous pocket or emphysema between the posterior wall of the left atrium and the esophagus during cardiac ablation of the left atrium. This pocket of gas expanded tissue serves to thermally insulate and separate the esophagus from the left atrium during ablation to prevent the formation of an atrial-esophageal fistula. The system comprises a control system to precisely deliver the gas to a desired location through a needle-based catheter assembly.

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Номер записи: 81
08-10-2015 дата публикации

Systems and methods for optimizing emissions from simultaneous activation of electrosurgery generators

Номер: US20150282857A1
Автор: Donald W. Heckel, Randall L. Anderson
Принадлежит: COVIDIEN LP

A method for optimizing emissions from simultaneous activation of electrosurgery generators is presented including delivering first energy to a first target tissue via a first energy module, the first energy represented as a first waveform having a first phase, delivering second energy to a second target tissue via a second energy module, the second energy represented as a second waveform having a second phase, applying the first energy in a first energy mode, and applying the second energy in a second energy mode. The method further includes the steps of comparing the first phase of the first energy waveform with the second phase of the second energy waveform and adjusting a relative phase between the first and second energy waveforms based on the comparison step.

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Номер записи: 82
08-10-2015 дата публикации

Thermal regulation catheter system

Номер: US20150282858A1
Автор: Anthony T. Robilotto, Jennie F. MCKAIN, John M. Baust, Joshua T. Smith
Принадлежит: CPSI HOLDINGS LLC

A thermal regulation catheter system and method of use are disclosed, for moderating the temperature and other parameters of tissue surrounding a target tissue for an ablation procedure, or for performing a thermal treatment procedure. In an embodiment, the device includes a catheter having a shaft with a fluid supply line and a fluid return line disposed therein, and an inflatable heat exchange vessel at a distal end of the shaft. The fluid supply line supplies fluid to inflate the heat exchange vessel, and the fluid return line conducts fluid away from the heat exchange vessel.

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Номер записи: 83
27-09-2018 дата публикации

TISSUE EXTRACTION DEVICES AND METHODS

Номер: US20180271596A1
Автор: Germain Aaron, Klein Kyle, Shadduck John H., Truckai Csaba, Walker Michael D.
Принадлежит: BOSTON SCIENTIFIC SCIMED, INC.

Tissue may be cut and extracted from an interior location in a patient's body using a probe or tool which both effects cutting and causes vaporization of a liquid or other fluid to propel the cut tissue through an extraction lumen of the cutting device. The cutting may be achieved using an electrosurgical electrode assembly, including a first electrode on a cutting member and a second electrode within a cutting probe or tool. 1. A system for resecting tissue , comprising: an outer sleeve having a side window configured to receive tissue therein, the outer sleeve comprising a first polarity electrode; and', 'an inner sleeve disposed within the outer sleeve, the inner sleeve comprising a second polarity electrode;', 'wherein the inner sleeve is movable relative to the outer sleeve between a window-open position and a window-closed position; and, 'a tissue resecting probe includinga controller including an RF generator operatively connected to the tissue resecting probe;wherein in a first RF mode, the controller is configured to supply RF current between the first polarity electrode and the second polarity electrode to resect tissue extending into the side window.2. The system of claim 1 , wherein the controller is configured to selectively move or terminate movement of the inner sleeve relative to the outer sleeve.3. The system of claim 2 , wherein in the first RF mode claim 2 , the controller is configured to supply RF current between the first polarity electrode and the second polarity electrode to resect tissue extending into the side window while the inner sleeve is moving relative to the outer sleeve.4. The system of claim 2 , wherein in a second RF mode claim 2 , the controller is configured to supply RF current between the first polarity electrode and the second polarity electrode to coagulate tissue.5. The system of claim 4 , wherein the controller is configured to supply RF current between the first polarity electrode and the second polarity electrode to ...

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Номер записи: 84
27-09-2018 дата публикации

Apparatus and Method for Treating Rhinitis

Номер: US20180271612A1
Автор: Lin Bryant, Moosavi David, Saadat Mojgan, SAADAT Vahid
Принадлежит:

Devices and methods for treating rhinitis are described where the devices are configured to ablate a single nerve branch or multiple nerve branches of the posterior nasal nerves located within the nasal cavity. A surgical probe may be inserted into the sub-mucosal space of a lateral nasal wall and advanced towards a posterior nasal nerve associated with a middle nasal turbinate or an inferior nasal turbinate into a position proximate to the posterior nasal nerve where neuroablation of the posterior nasal nerve may be performed with the surgical probe. The probe device may utilize a visible light beacon that provides trans-illumination of the sub-mucosal tissue or an expandable structure disposed in the vicinity of the distal end of the probe shaft to enable the surgeon to visualize the sub-mucosal position of the distal end of the surgical probe from inside the nasal cavity using, e.g., an endoscope. 1. A method for treating rhinitis of a patient , the method comprising:bluntly dissecting with a distal end of a surgical probe along a surgical plane into a sub-mucosal space of a lateral nasal wall within a nasal cavity of a patient, the surgical probe comprising a surgical probe shaft with a proximal end and the distal end, a handle coupled to the proximal end, and a cryotherapy element disposed on the distal end;advancing the distal end of the surgical probe shaft within the sub-mucosal space of the lateral nasal wall tissue and towards at least one nasal nerve associated with the lateral nasal wall tissue; andcryogenically treating the at least one nasal nerve with the cryotherapy element to reduce at least one symptom of rhinitis.2. The method of claim 1 , wherein the distal end of the surgical probe shaft comprises a flexible segment and bluntly dissecting comprises flexibly bending the distal end of the surgical probe shaft to laterally traverse the distal end of the surgical probe shaft along the surgical plane.3. The method of claim 1 , wherein bluntly ...

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Номер записи: 85
20-08-2020 дата публикации

THERMAL CONTROL SYSTEM

Номер: US20200261261A1
Автор: Campbell Jonathan David, Constant Marco, Holmberg, Hopper Christopher John, III Roy E., Schultz Brian
Принадлежит:

A thermal control unit for delivering temperature-controlled fluid to one or more patient therapy devices (e.g. pads, blankets, etc.) that are in contact with a patient is disclosed. The thermal control unit allows multiple patient therapy devices to be fluidly coupled thereto and to individually monitor the temperatures, flow rates, and/or connections/disconnections of the patient therapy devices. A user interface enables a user to designate outlet ports to the therapy devices as active or inactive, and the control unit provides notifications to the user if any of the active ports experience an undesired condition, or if a patient therapy device is connected to an inactive port. The user interface further allows the user to designate one of multiple patient temperature probes as a primary probe. The primary probe is used to control the temperature of the fluid circulating through the control unit. 1. A thermal control unit comprising:a first fluid outlet adapted to fluidly couple to a first fluid supply line;a first fluid inlet adapted to fluidly couple to a first fluid return line;a heat exchanger;a removable reservoir adapted to provide fluid to the thermal control unit and to be lifted out of the thermal control unit, the removable reservoir including a valve integrated into a wall of the removable reservoir, the valve adapted to automatically open when the removable reservoir is inserted into the thermal control unit and to automatically close when the removable reservoir is lifted out of the thermal control unit;a pump for circulating the fluid from the first fluid inlet through the heat exchanger and to the first fluid outlet;a temperature sensor for detecting a temperature of the fluid;a control panel adapted to receive a temperature input from a user; anda controller in communication with the pump, the heat exchanger, the temperature sensor, and the control panel, the controller adapted to control the heat exchanger such that the temperature of the fluid ...

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Номер записи: 86
20-10-2016 дата публикации

Method for employing single fault safe redundant signals

Номер: US20160302848A1
Автор: James E. Krapohl
Принадлежит: COVIDIEN LP

An electrosurgical system includes an electrosurgical instrument coupled to an electrosurgical generator. The electrosurgical system may include a first sensor and a second sensor, which are configured to detect redundant tissue properties and output a signal corresponding thereto. The electrosurgical system has a signal processing circuit for receiving and modifying the output signal from the second sensor. The electrosurgical generator may include a controller for receiving an output signal from the first sensor and a processed signal from the signal processing circuit. The controller compares the two signals received and shuts down the system based on the comparison of the first sensor and a processed signal.

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Номер записи: 87
29-10-2015 дата публикации

IMAGE-GUIDED THERAPEUTIC APPARATUS AND METHOD OF PREPARATION OF AN IMAGE-GUIDED THERAPEUTIC APPRATUS FOR TREATMENT OF TISSUE

Номер: US20150305821A1
Автор: Lacoste Francois, PECHOUX Thierry, YON Sylvain
Принадлежит:

An image-guided therapeutic apparatus () comprises a treatment device (), preferably a HIFU transducer, for treating tissue, at least one imaging device () for guidance of a treatment, a mechanism for providing an image (), a display () for displaying an image and planning mechanism () for planning a treatment. The planning mechanism () is adapted to create a lesion representation () of a lesion that will be created in tissue on the image () and to overlay the lesion representation () over the image (). The size and/or shape and/or position of the lesion representation () is changeable, in particular, depending on the characteristics of the tissue. 119-. (canceled)20. An image-guided therapeutic apparatus comprising: at least one imaging device for guidance of a treatment,', 'means for providing an image,', 'a display for displaying said image, and', 'planning means for planning a treatment', 'wherein the planning means is adapted to create a lesion representation of a lesion that will be created in tissue and to overlay said lesion representation over said image,, 'a treatment device for treating tissue,'}wherein characteristics of the lesion representation are changeable.21. The image-guided therapeutic apparatus according to claim 20 , wherein the characteristics of the lesion representation include at least one of a size claim 20 , a shape and a position of the lesion.22. The image-guided therapeutic apparatus according to claim 20 , wherein the characteristics of the lesion representation are changeable in dependence on the characteristics of the tissue.23. The image-guided therapeutic apparatus according to claim 20 , wherein the planning means comprises a manual adjusting unit useable by an operator for adjusting the lesion representation.24. The image-guided therapeutic apparatus according to claim 20 , wherein the planning means comprise an automatic image analysis unit to define and analyze and adapt the lesion representation of the treatment.25. The image ...

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Номер записи: 88
24-09-2020 дата публикации

Cryotherapy device flow control

Номер: US20200297403A1
Автор: Eyal Kochavi
Принадлежит: Vessi Medical Ltd

A cryotherapy system, including, an elongated cryotherapy device having a proximal end and a distal end shaped and sized to be positioned inside a body lumen, including: a cryo inflow path fluidically connecting a cryogenic fluid source with the distal end of the cryotherapy device, wherein the cryo inflow path is configured to allow cryogenic flow from the cryogenic fluid source into the body lumen; an optics assembly configured to visualize a field of view between the distal end and a target region inside the body lumen; a washing inflow path fluidically connecting a washing fluid source with at least one washing opening configured to aim washing fluid towards the optics assembly in the distal end and/or towards the field of view.

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Номер записи: 89
12-11-2015 дата публикации

Electrosurgical generator

Номер: US20150320481A1
Автор: Eric R. Cosman, Jr., Eric R. Cosman, SR.
Принадлежит: Chenes LLC

This invention relates to high-frequency ablation of tissue in the body using a cooled high-frequency electrode connected to a high frequency generator including a computer graphic control system and an automatic controller for control the signal output from the generator, and adapted to display on a real time graphic display a measured parameter related to the ablation process and visually monitor the variation of the parameter of the signal output that is controlled by the controller during the ablation process. In one example, one or more measured parameters are displayed simultaneously to visually interpret the relation of their variation and values. In one example, the displayed one or more parameters can be taken from the list of measured voltage, current, power, impedance, electrode temperature, and tissue temperature related to the ablation process. The graphic display gives the clinician an instantaneous and intuitive feeling for the dynamics and stability of the ablation process for safety and control. This invention relates to monitoring and controlling multiple ground pads to optimally carry return currents during high-frequency tissue ablation, and to prevent of ground-pad skin burns. This invention relates to the use of ultrasound imaging intraoperatively during a tissue ablation procedure. This invention relates to the use of nerve stimulation and blocking during a tissue ablation procedure.

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Номер записи: 90
02-11-2017 дата публикации

Device and Method for Real-Time Lesion Estimation During Ablation

Номер: US20170312009A1
Автор: Cao Hong, Paul Saurav
Принадлежит:

Disclosed herein are ablation systems and methods for providing feedback on lesion formation in real-time. The methods and systems assess absorptivity of tissue based on a degree of electric coupling or contact between an ablation electrode and the tissue. The absorptivity can then be used, along with other information, including, power levels and activation times, to provide real-time feedback on the lesions being created. Feedback may be provided, for example, in the form of estimated lesion volumes and other lesion characteristics. The methods and systems can provide estimated treatment times to achieve a desired lesion characteristic for a given degree of contact, as well as depth of a lesion being created. The degree of contact may be measured using different techniques, including the phase angle techniques and a coupling index. 143-. (canceled)44. An ablation control system , comprising:a temperature measurement circuit configured to measure a temperature of a tissue to be ablated with at least one ablation electrode; a time-variant power level of ablative energy applied to the tissue; and', 'a tissue temperature setting for lesion formation in the tissue., 'a lesion analysis processor configured to estimate a volume of a lesion forming in the tissue to be ablated with the at least one ablation electrode as a function of45. The system according to claim 44 , wherein the tissue temperature setting is between 50 degrees C. and 55 degrees C.46. The system according to claim 44 , wherein a maximum time-variant power level of ablative energy applied to the tissue exceeds a power level necessary to achieve the tissue temperature setting.47. The system according to claim 44 , wherein the lesion analysis processor is further configured to estimate the volume of the lesion forming in the tissue to be ablated as a function of a temperature increase in the tissue to be ablated.48. The system according to claim 47 , wherein:the lesion analysis processor utilizes a ...

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Номер записи: 91
15-11-2018 дата публикации

Ablation Device with Sensor

Номер: US20180325577A1
Автор: Martin Keith Edward, Park Christopher J., Privitera Salvatore
Принадлежит: AtriCure, Inc.

An electrosurgical device having a distal tip for creating a lesion on tissue includes a first electrode and a second electrode that are parallel for the delivery of RF energy to tissue. A sensor electrode is provided parallel to and spaced away from the first electrode a different distance than the second electrode. When the sensor electrode and at least one of the first and second electrodes are in contact with tissue. The electrosurgical device can perform at least one of the following: ablating tissue, and sensing at least one selected from the group of voltage, tissue impedance, electrical conduction, conduction time, conduction velocity, and signal phase angle. 1. An electrosurgical device having a distal tip for creating a lesion on tissue , the electrosurgical device comprising:a first pole electrode on the distal tip for the delivery of RF energy to tissue; a second pole electrode on the distal tip parallel to and spaced away from the first electrode a first distance, the second pole electrode for the delivery of RF energy to tissue; anda sensor electrode on the distal tip parallel to and spaced away from the first pole electrode a second distance, wherein when the sensor electrode and at least one of the first pole electrode and the second pole electrode are in contact with tissue, the sensor electrode enables a sensor to sense at least one selected from the group of voltage, tissue impedance, electrical conduction, conduction time, conduction velocity, and signal phase angle.2. The electrosurgical device of wherein the at least one sensor electrode is electrically coupled to one of the first pole electrode or the second pole electrode and capable of delivering RF energy to tissue.3. (canceled)4. The electrosurgical device of wherein the first pole electrode and the second pole electrode have a first width claim 1 , and the sensor electrode has a second width less than the first width to enhance sensing.5. The electrosurgical device of wherein the second ...

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Номер записи: 92
15-11-2018 дата публикации

MICROWAVE TREATMENT DEVICES AND METHODS

Номер: US20180325592A1
Автор: CHU Chun Yiu, EMMONS Clarence, MODY Dinesh I., SHROFF Ketan, WALKE Amrish J.
Принадлежит: MicroCube, LLC

The present invention discloses medical systems and methods adapted for the delivery of various medical components such as microwave antennas within or on a body for performing one or more medical procedures. Several embodiments herein disclose medical systems comprising a combination of one or more medical components and one or more elongate steerable or non-steerable arms that are adapted to mechanically manipulate the one or more medical components. Several embodiments of microwave antennas are disclosed that comprise an additional diagnostic or therapeutic modality located on or in the vicinity of the microwave antennas. 1. A microwave emitting device for delivering energy from an energy source and for use with a second power supply , the microwave emitting device comprising:a microwave antenna configured to be coupled to the energy source, the antenna having a proximal end, a distal end and an antenna axis, where the microwave antenna generates a microwave field upon application of energy from the energy source;an electrode positioned along the microwave antenna and between the proximal end and the distal end of the antenna, wherein the electrode is exposed to the microwave field and is electrically isolated from the antenna, where the electrode is coupleable to the second power supply; anda wire electrically coupled to the electrode wherein the wire is electrically isolated from the antenna and wherein a first portion of the wire exposed to the microwave field emitted by the antenna is helically disposed about the axis of the antenna such that arrangement of the conductive wire relative to the antenna reduces distortion of the microwave field due to the electrode.2. The system of claim 1 , where the electrode is located externally over the microwave antenna.3. The system of claim 1 , wherein the first portion of the wire is shaped in a helix having an axis and is disposed such that the helix axis is parallel to the antenna axis.4. The system of claim 1 , ...

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Номер записи: 93
10-12-2015 дата публикации

Method and system for consistent, repeatable, and safe cryospray treatment of airway tissue

Номер: US20150351822A1
Автор: Brian M. Hanley, Ellen Sheets, Marc Davidson, Thomas Mulcahey, Wei Li Fan
Принадлежит: Individual

A method and system for automated and semi-automated predictable, consistent, safe, effective, and lumen-specific and patient-specific cryospray treatment of airway tissue in which treatment duration is automatically set by the system following entry of patient information and treatment location information into the system by the user, and treatment spray is automatically stopped by the system when the automatically selected treatment duration has been achieved as determined by the system.

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Номер записи: 94
30-11-2017 дата публикации

Contact sensing systems and methods

Номер: US20170340377A1
Автор: Dorin Panescu, Jessi E. Johnson
Принадлежит: Epix Therapeutics Inc

According to some embodiments, a medical instrument comprises an elongate body having a proximal end and a distal end and a pair of electrodes or electrode portions (for example, a split-tip electrode assembly). Systems and methods are described herein that perform contact sensing and/or ablation confirmation based on electrical measurements obtained while energy of different frequencies are applied to the pair of electrodes or electrode portions. The contact sensing systems and methods may calibrate network parameter measurements to compensate for a hardware unit in a network parameter measurement circuit or to account for differences in cables, instrumentation or hardware used.

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Номер записи: 95
01-12-2016 дата публикации

Method for enhancing penetration property of wave and apparatus for performing previously set function by introducing wave into random medium

Номер: US20160349500A1
Автор: Won-Jun Choi, Won-Shik CHOI
Принадлежит: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

A method of enhancing transmittance of waves according to the invention comprises the following steps: (a) Generating a plurality of waves each of which has random phase; (b) grouping randomly the plurality of waves into a first group and a second group; (c) introducing the waves onto a disordered medium by fixing phase of waves constituting the first group and varying phase of waves constituting the second group; (d) measuring intensity of the waves based on overlapped waves of the first group and the second group which penetrated the disordered medium according to the phase variation of waves constituting the second group; (e) obtaining phase having the maximum intensity according to the phase variation among intensities measured at the step (d); and (f) adjusting phase of the waves constituting the second group based on phase obtained at the step (e).

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Номер записи: 96
22-12-2016 дата публикации

Fluid control system for a medical device

Номер: US20160367306A1
Автор: Chadi Harmouche, Jean-Luc Pageard, John W. Lehmann, Marwan Abboud, Rachid Mahrouche, Teresa Ann Mihalik
Принадлежит: MEDTRONIC CRYOCATH LP

The present invention provides a medical device having an elongate body with both a proximal end and a distal end, wherein the elongate body defines an intake lumen and an exhaust lumen. The medical device also has a first pliable element defining a cooling chamber disposed at a point along the elongate body, with the cooling chamber being in fluid communication with the intake lumen and the exhaust lumen. A second pliable element is provided which at least partially encloses the first pliable element, thereby defining a junction between the first and second pliable element. A check valve is included which is in fluid communication with the junction between the first pliable element and second pliable element, the valve further being in fluid communication with the exhaust lumen. Additionally, the medical device may include sensors or other monitoring means in fluid communication with the junction and the cooling chamber.

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Номер записи: 97
13-12-2018 дата публикации

TUNED RF ENERGY AND ELECTRICAL TISSUE CHARACTERIZATION FOR SELECTIVE TREATMENT OF TARGET TISSUES

Номер: US20180353239A1
Автор: Blanck Arthur G., Herscher Bret, Hoey Michael F., Michel Raphael M., STEINKE THOMAS A., Stone Corbett W., Truesdale Marlene Kay
Принадлежит:

A catheter and catheter system can use energy tailored for remodeling and/or removal of target material along a body lumen, often of atherosclerotic material of a blood vessel of a patient. An elongate flexible catheter body with a radially expandable structure may have a plurality of electrodes or other electrosurgical energy delivery surfaces to radially engage atherosclerotic material when the structure expands. An atherosclerotic material detector system may measure and/or characterize the atherosclerotic material and its location, optionally using impedance monitoring. 1. A system for characterizing and treating a target tissue in a patient body , the system comprising:a probe having an electrode for aligning with the target tissue of the patient body,an RF energy source couplable to the probe, the RF source having a first mode and a second mode, the RF source in the first mode configured to apply a tissue characterizing energy, the probe, the RF source, the target tissue, and a collateral tissue included in a circuit when the probe is coupled to the RF source and the electrode is aligned with the target tissue;a processor coupled to the RF source, the processor configured to:characterize the target tissue by measuring a phase angle of the circuit while the circuit is energized with, the characterization energy; anddetermine an appropriate treatment energy from the measured phase angle of the circuit for use in the second mode of the RF source so as to heat the target tissue.2. The system of claim 1 , wherein the RF energy source in the second mode applies the treatment energy with a treatment phase angle in response to a treatment phase angle input claim 1 , the processor configured to determine the treatment phase angle input so as to compensate for the measured phase angle.3. The system of claim 1 , the collateral tissue of the circuit having an associated impedance magnitude and an associated phase angle for each of a plurality of RF frequencies of the ...

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Номер записи: 98
29-12-2016 дата публикации

Electrosurgical apparatus for generating radiofrequency energy and microwave energy for delivery into biological tissue

Номер: US20160374752A1
Автор: Christopher Paul Hancock, Malcolm White, Nuwan DHARMISIRI
Принадлежит: Creo Medical Ltd

An isolating circuit for electrosurgical generator arranged to produce radiofrequency (RF) energy and microwave energy for treating biological tissue. The generator has an RF channel and a microwave channel which are combined at signal combiner to enable the RF energy and microwave energy to be delivered into tissue along a common feed path. The isolating circuit comprises a tunable waveguide isolator at a junction between the microwave channel and signal combiner, and can include a capacitive structure between a ground conductor of the signal combiner and a conductive input section of the waveguide isolator to inhibit coupling of the RF energy and leakage of the microwave energy. The isolating circuit can combine into a single tunable unit all the necessary components to isolate the microwave and RF channels from one another whilst providing a high withstanding voltage.

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Номер записи: 99
12-11-2020 дата публикации

Alternate power correction outputs in electrosurgical systems

Номер: US20200352629A1
Автор: Frank Breitsprecher, Kester Julian Batchelor, Wayne Williams
Принадлежит: Individual

Apparatus and associated methods relate to controlling electrical power of an electrotherapeutic signal that is provided to a biological tissue engaged by an electrosurgical instrument during a medical procedure. Electrical power—a product of a voltage difference across and an electrical current conducted by the engaged biological tissue—is controlled according to a therapeutic schedule. The electrotherapeutic schedule can be reduced or terminated in response to a termination criterion being met. In some examples, the termination criterion is a current characteristic, such as, for example, a decrease in current conducted by the engaged biological tissue. In some examples, the termination criterion is a biological tissue resistance characteristic, such as, for example, an increase in the biological tissue resistance that exceeds a predetermined delta resistance value.

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Номер записи: 100