УСТАНОВКА ДЛЯ РАДИОЧАСТОТНОЙ ТЕРАПИИ

Изобретение относится к медицинской технике. Аппаратура для радиочастотной терапии содержит кабель для подсоединения к блоку источника питания и управления и наконечник, обеспеченный электродом. Тепловая камера блока источника питания и управления функционально связана с экраном для воспроизведения полученных данных. Тепловая камера является ориентируемой в направлении области пациента, которая подвергается медицинской или эстетической радиочастотной терапии. Блок источника питания и управления размещен внутри коробообразного корпуса. Экран дисплея расположен на поверхности коробообразного корпуса, которая направлена в сторону оператора, использующего наконечник. Обеспечивается обратная связь для оператора при управлении аппаратурой путем постоянного наблюдения за экраном дисплея и ручного изменения параметров радиочастотной эмиссии (интенсивность и/или частота), что позволяет адаптировать лечение к ощущениям пациента с использованием навыков и опыта оператора. 8 з.п. ф-лы, 1 ил.

Electrode for a system for heating biological tissue via rf energy

Position-biasing thermocouple

A thermocouple assembly may feature a plurality of temperature sensors formed by thermocouple junctions. The sensors may be disposed upon a substrate, that has a curvature that biases each of the plurality of temperature sensors in a desired direction. (CY Aj ...

METHODS AND DEVICES FOR ABLATION

An ablating device (522) has a cover (460) which holds an interface material such as a gel. The cover (460) contains the interface material during initial placement of the device (522). The ablating device (522) may also have a removable tip or a membrane (520) filled with fluid. In still another aspect the ablating device (522) may be submerged in liquid during operation.

TISSUE ABLATION SYSTEMS

Tissue is treated using a radiofrequency power supply connected to an applicator having a chamber filled with an electrically non-conductive gas surrounded by a thin dielectric wall. A radiofrequency voltage is applied at a level sufficient to ionize the gas into a plasma and to capacitively couple the ionized plasma with the tissue to deliver radiofrequency current to ablate or otherwise treat the tissue.

TECHNIQUES FOR PREDICTING RECURRENCE OF CANCEROUS CELLS USING IMPEDANCE DETECTION

One embodiment of the present application sets forth a method for predicting recurrence of cancerous cells in a patient that includes measuring, by a first subset of electrodes included in an electrode array operating at a first frequency, a first impedance of a first section of a first sample of tissue excised from the patient, computing a first Cole relaxation frequency for the first section of the first sample based on the first impedance, and generating a first prediction relating to cancerous cells in the patient based at least in part on the first Cole relaxation frequency.

METHODS AND APPARATUS FOR CONTROLLED RF TREATMENTS AND RF GENERATOR SYSTEM

Electrosurgical systems and components thereof configured to deliver RF energy to a target site of a human or other animal patient with selectable RF energy delivery profiles, temperature sensors and controls, and/or electrodes configured to more uniformly or effectively delivery energy to target tissue.

SYSTEM AND METHOD FOR PULMONARY TREATMENT

An apparatus and method for pulmonary treatment by denervation is provided. The apparatus includes an elongate member configured for insertion into the trachea to a position adjacent a pulmonary plexus. The apparatus further includes at least one energy delivery element disposed on the elongate member. The energy delivery element is positionable to target at least one nerve in the tracheal wall when the elongate member is positioned in the trachea. Energy from the energy delivery element is delivered to the at least one nerve to treat pulmonary symptoms, conditions, and/or diseases, such as asthma, COPD, obstructive lung diseases, or other pulmonary diseases ...

DEVICE AND METHODS FOR NERVE MODULATION USING A NOVEL ABLATION CATHETER WITH POLYMERIC ABLATIVE ELEMENTS

The disclosure pertains to an intravascular catheter for nerve modulation, comprising an elongate member having a proximal end and a distal end, a balloon having a lumen and a balloon wall, the balloon wall comprising RF permeable sections and non-electrically conductive sections, an electrode disposed within the balloon and extending distally to the furthest distal RF permeable section. The RF permeable sections may comprise a plurality of RF permeable windows, each window having a greater circumferential dimension than an axial dimension. The intravascular system is suited for modulation of renal nerves.

METHODS AND SYSTEMS FOR EVALUATING THE INTEGRITY OF A UTERINE CAVITY

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., CO2) 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.

TISSUE ABLATION SYSTEMS

Tissue is treated using a radiofrequency power supply connected to an applicator having a chamber filled with an electrically non-conductive gas surrounded by a thin dielectric wall. A radiofrequency voltage is applied at a level sufficient to ionize the gas into a plasma and to capacitively couple the ionized plasma with the tissue to deliver radiofrequency current to ablate or otherwise treat the tissue.

Thermally isolated thermocouple

A thermocouple assembly may feature a plurality of temperature sensors formed by thermocouple junctions. The sensors may be disposed within an inner diameter of the tubular element and sealed within the tubular element by thermally conductive material. An air gap may be defined by the thermally conductive material and the interior diameter of the tubular element between each pair of adjacent temperature sensors to improve thermal isolation. ~:\ S.,--------------------- 82 64 78 64 25W 424C 1080 29 sec 50 W60C 1500 70 g 40 50 $00 130 56 200 504 506 502 90 28 10 L A A -a -70114 0 6 12 18 24 30 sec 25W 600 531 830 29 sec 50W60C Iso 70 g 40 50 130!56 30 460 110142 20 90j28 100A 0 70 14 0 6 12 18 24 30sec ...

VESSEL SEALING SYSTEM USING CAPACITIVE RF DIELECTRIC HEATING

An electrosurgical system for sealing vessels using capacitive (RF) dielectric heating and a method thereof are provided. The system includes an electrosurgical instrument having an end effector with parallel plate electrodes that will clamp onto a vessel and maintain a specified gap distance; however, the electrodes will be coated with a non-conductive dielectric material. Such an end effector will ensure that direct conduction between the electrodes does not occur through tissue or fluids and effectively creates a parallel plate capacitor with a dielectric, e.g., tissue and coating, in between the plates. The electrosurgical instrument will be activated with an AC signal at a specified RF frequency, e.g., a Debye resonance frequency, via an electrosurgical generator. An effective AC current will flow through the tissue and cause heating due to fictional losses from rotating polar molecules in the tissue.

TISSUE ABLATION SYSTEMS

Tissue is treated using a radiofrequency power supply connected to an applicator having a chamber filled with an electrically non-conductive gas surrounded by a thin dielectric wall. A radiofrequency voltage is applied at a level sufficient to ionize the gas into a plasma and to capacitively couple the ionized plasma with the tissue to deliver radiofrequency current to ablate or otherwise treat the tissue.

Techniques for predicting recurrence of cancerous cells using impedance detection

One embodiment of the present application sets forth a method for predicting recurrence of cancerous cells in a patient that includes measuring, by a first subset of electrodes included in an electrode array operating at a first frequency, a first impedance of a first section of a first sample of tissue excised from the patient, computing a first Cole relaxation frequency for the first section of the first sample based on the first impedance, and generating a first prediction relating to cancerous cells in the patient based at least in part on the first Cole relaxation frequency.

SYSTEM AND METHOD FOR ENDOMETRIAL ABLATION

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., CO2) 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.

Grounded electrode surgical implement and system

КАТЕТЕР С ОХЛАЖДЕНИЕМ НА НЕАБЛЯЦИОННОМ ЭЛЕМЕНТЕ

Изобретения относятся к медицинской технике, а именно к катетерам, имеющим активный дистальный участок, включая орошаемый концевой электрод, особенно полезный в случае абляции сердечной ткани. Катетер содержит удлиненный корпус катетера и концевой электрод, расположенный дистально относительно корпуса катетера. Концевой электрод содержит оболочку, имеющую проксимальный участок шейки и дистальную камеру; опорный элемент, имеющий проксимальный и дистальный участки; и канал для текучей среды, предусмотренный между участком шейки оболочки и дистальным участком опорного элемента. Проксимальный участок опорного элемента вставлен в участок шейки оболочки. Дистальный участок опорного элемента продолжается в камеру оболочки. Проксимальный участок опорного элемента имеет сквозное отверстие для текучей среды, которое проходит сквозь внутреннюю часть проксимального участка опорного элемента. Канал для текучей среды расположен на наружной поверхности дистального участка опорного элемента и сообщается ...

УСТАНОВКА ДЛЯ РАДИОЧАСТОТНОЙ ТЕРАПИИ

Conductive optical element

A device having an optical element with a conductive coating. The device may include an optical element, a conductive material and at least one connector. The conductive material is disposed on at least a portion of the optical element. The optical element, for example, may be an object lens of an endoscope or an optical coupler. The connectors (acting as terminals) are capable of providing energy (such as electrical energy) to the conductive material. In one aspect, the conductive material is an optically transparent material. Advantageously, the device may allow visualization of an object - such as body tissue or other matter - concurrent with the application of energy to the object via the conductive coating. This allows the user to observe the alteration of tissue and other matter in real time as the energy is delivered.

SYSTEM AND METHOD FOR INTERACTIVE EVENT TIMELINE

An interactive event timeline system and method are disclosed. Multiple events and/or signal indicators are captured during a medical procedure, such as a cardiac procedure. Event data relevant to the cardiac procedure may include, tags, user generated points, ablation events, pacing events and other like events. An interactive event timeline is generated from the captured events and displayed on a visual display device. The interactive event timeline is correlated with a vertical listing of the events and a selected event viewer. All three views may be displayed simultaneously. The interactive event timeline allows a physician or user (collectively "user") to see temporal relationships between the captured events. The user can see, for example, simultaneous events, long duration events versus short duration events, continuous events and specific event types. 00r Cl)~ Wz U) IJ z o) 0 6 U) 0C/ z H I~C dC) u C)) c ...

VAGINAL REMODELING DEVICE AND METHOD

This invention provides devices and methods for remodeling the female genital tissue, the device comprising a treatment tip, wherein the distal end of the treatment tip is conical, spherical, hemispherical, oval or circular in shape. The device further comprises one or more energy delivery elements for simultaneous cooling of the vaginal epithelium and transmission of energy for heating the tissues underneath the epithelium. In one embodiment, said device may further comprise one or more of the following: one or more temperature sensors for measuring the temperature at or below the epithelium; one or more directional sensors mounted on the hand piece or treatment tip; and one or more depth markers to show the depth of penetration of the treatment tip into the vagina. In another embodiment, this invention provides a device having a finger holder with electrodes for remodeling the female genital tissue.

METHODS AND SYSTEMS FOR EVALUATING THE INTEGRITY OF A UTERINE CAVITY

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., CO2) 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.

PLASMA TREATMENT UNIT

A plasma treatment unit having a high-voltage stage (5, 6), arranged in a housing, for generating high-voltage signals suitable for the generation of a plasma, and having a head part (2) which is connectable to the high-voltage stage (5, 6) and in which there is situated an electrode arrangement (13) shielded by a dielectric (9), is suitable for plasma treatments in particular in the body interior by virtue of the fact that the head part (2) has an elongate transition piece (10) which is attachable to the housing and on that end of which which is not connectable to the housing there is arranged a treatment head (16, 16′), the dimensions of which perpendicular to the longitudinal direction of the transition piece (10) greatly exceed the dimensions of the transition piece (10), and that, in the treatment head (16, 16′), the electrode arrangement (13) forms a spatially closed flexible sheath (12) around a resiliently elastic core (14) and is covered at its outer lateral surface by a thin layer ...

Permanente Wundauflage mit Plasmaelektrode

Ein Behandlungsgerät für eine dielektrisch behinderte Plasmabehandlung einer Wund- oder Hautfläche, mit einer flexiblen flächigen Elektrodenanordnung mit wenigstens einer flächigen Elektrode (6, 6') und einer die wenigstens eine Elektrode (6, 6') zumindest teilweise einbettenden Dielektrikumsschicht (5), die eine der Wund- oder Hautfläche zugewandte Auflageseite (7) aufweist und die flächige Elektrode (6, 6') elektrisch von der Wund- oder Hautfläche so abschirmt, dass nur ein dielektrisch behinderter Stromfluss von der Elektrode (6, 6') zur Wund- oder Hautfläche möglich ist, und mit einem ein separates Gehäuse (25) aufweisenden Steuergerät (2), über das die Elektrode (6, 6') mit einer Betriebsspannung verbindbar ist, ermöglicht eine vereinfachte Wundbehandlung dadurch, dass die Anordnung aus Elektrode (6, 6') und Dielektrikumsschicht (5) für eine ununterbrochene Auflage auf der Wund- oder Hautfläche ausgelegt ist und dass das Gehäuse (25) des Steuergeräts (2) mit einer Befestigungsvorrichtung ...

Techniques for predicting recurrence of cancerous cells using impedance detection

One embodiment of the present application sets forth a method for predicting recurrence of cancerous cells in a patient that includes measuring, by a first subset of electrodes included in an electrode array operating at a first frequency, a first impedance of a first section of a first sample of tissue excised from the patient, computing a first Cole relaxation frequency for the first section of the first sample based on the first impedance, and generating a first prediction relating to cancerous cells in the patient based at least in part on the first Cole relaxation frequency.

Techniques for predicting recurrence of cancerous cells using impedance detection

One embodiment of the present application sets forth a method for predicting recurrence of cancerous cells in a patient that includes measuring, by a first subset of electrodes included in an electrode array operating at a first frequency, a first impedance of a first section of a first sample of tissue excised from the patient, computing a first Cole relaxation frequency for the first section of the first sample based on the first impedance, and generating a first prediction relating to cancerous cells in the patient based at least in part on the first Cole relaxation frequency.

ELECTROSURGICAL INSTRUMENT WITH IMPEDANCE TRANSFORMER FOR DELIVERING MICROWAVE ENERGY

An electrosurgical instrument for delivering microwave energy having a predetermined frequency into biological tissue in contact with the instrument, wherein the instrument comprises a first coaxial transmission line having a second coaxial transmission line connected to the distal end thereof, the second coaxial transmission line having a length and a characteristic impedance that are configured to match the impedance of the first coaxial transmission line to the load impedance at the distal end of the distal coaxial transmission line when the instrument is in contact with the tissue, at the operating frequency.

SYSTEM AND METHOD FOR INTERACTIVE EVENT TIMELINE

An interactive event timeline system and method are disclosed. Multiple events and/or signal indicators are captured during a medical procedure, such as a cardiac procedure. Event data relevant to the cardiac procedure may include, tags, user generated points, ablation events, pacing events and other like events. An interactive event timeline is generated from the captured events and displayed on a visual display device. The interactive event timeline is correlated with a vertical listing of the events and a selected event viewer. All three views may be displayed simultaneously. The interactive event timeline allows a physician or user (collectively "user") to see temporal relationships between the captured events. The user can see, for example, simultaneous events, long duration events versus short duration events, continuous events and specific event types.

VESSEL SEALING SYSTEM USING CAPACITIVE RF DIELECTRIC HEATING

An electrosurgical system for sealing vessels using capacitive (RF) dielectric heating and a method thereof are provided. The system includes an electrosurgical instrument having an end effector with parallel plate electrodes that will clamp onto a vessel and maintain a specified gap distance; however, the electrodes will be coated with a non-conductive dielectric material. Such an end effector will ensure that direct conduction between the electrodes does not occur through tissue or fluids and effectively creates a parallel plate capacitor with a dielectric, e.g., tissue and coating, in between the plates. The electrosurgical instrument will be activated with an AC signal at a specified RF frequency, e.g., a Debye resonance frequency, via an electrosurgical generator. An effective AC current will flow through the tissue and cause heating due to fictional losses from rotating polar molecules in the tissue.

ELECTRODE ASSEMBLY AND HANDPIECE WITH ADJUSTABLE SYSTEM IMPEDANCE, AND METHODS OF OPERATING AN ENERGY-BASED MEDICAL SYSTEM TO TREAT TISSUE

Electrode assemblies and handpieces for energy-based treatment systems that utilize an impedance assembly to facilitate impedance matching between the system and a patient. The electrode assembly (18; 18a; 18b; 18c; 18d; 18e; 18e; 18f) and/or handpiece (14; 14a; 14b; 14c; 14d; 14e; 14e) may include one or more circuit elements configured to introduce at least one supplemental impedance into an electrical circuit coupling the electrode assembly and handpiece. The supplemental impedance, which is related to the impedance of the treatment system (10) and patient, is introduced when the electrode assembly is coupled with the handpiece.

VAGINAL REMODELING DEVICE AND METHOD

This invention provides devices and methods for remodeling the female genital tissue, the device comprising a treatment tip, wherein the distal end of the treatment tip is conical, spherical, hemispherical, oval or circular in shape. The device further comprises one or more energy delivery elements for simultaneous cooling of the vaginal epithelium and transmission of energy for heating the tissues underneath the epithelium. In one embodiment, said device may further comprise one or more of the following: one or more temperature sensors for measuring the temperature at or below the epithelium; one or more directional sensors mounted on the hand piece or treatment tip; and one or more depth markers to show the depth of penetration of the treatment tip into the vagina. In another embodiment, this invention provides a device having a finger holder with electrodes for remodeling the female genital tissue.

CATHETER WITH COOLING ON NONABLATING ELEMENT

A catheter tip electrode has a tissue contacting surface which electrically conducts RF energy to the tissue and is more thermally conductive than adjacent non-electrically conductive coating or cover which prevents RF conduction to the tissue contacting that surface. The tip electrode has a shell with a nonablating hollow proximal neck portion and a distal ablating portion defining a fluid chamber, and a plug-like support member which is configured with a fluid channel on its outer surface so a fluid passage is provided between the member and the neck portion for convective or direct cooling of the nonablating neck portion and nonconductive tubing covering it.

Hemostasis instrument

The invention relates to a hemostasis instrument (1, 1', 1") for actively stopping the bleeding, in particular after an open, laparoscopic, or endoscopic operation on a patient, comprising several hemostasis components. The hemostasis instrument comprises at least the following hemostasis components: - a thermal hemostasis device for tissue coagulation by producing a temperature above the coagulation temperature of biological tissue (23) by means of a coagulation electrode (19); - a biochemical hemostasis device for producing a silent electric discharge by means of at least one discharge electrode (19, 27), and an insulating device (21, 21'), wherein the insulating device is arranged between the discharge electrode (19, 27) and the tissue (23) to be treated; - a supplying device (5, 7') for supplying substances that influence blood clotting to the tissue to be treated, and - a supply device (5) for supplying noble gas to the tissue to be treated.

Vaginal remodeling device and method

This invention provides devices and methods for remodeling the female genital tissue, the device comprising a treatment tip, wherein the distal end of the treatment tip is conical, spherical, hemispherical, oval or circular in shape. The device further comprises one or more energy delivery elements for simultaneous cooling of the vaginal epithelium and transmission of energy for heating the tissues underneath the epithelium. In one embodiment, said device may further comprise one or more of the following: one or more temperature sensors for measuring the temperature at or below the epithelium; one or more directional sensors mounted on the hand piece or treatment tip; and one or more depth markers to show the depth of penetration of the treatment tip into the vagina. In another embodiment, this invention provides a device having a finger holder with electrodes for remodeling the female genital tissue.

ELECTROPHYSIOLOGY CATHETER DESIGN

The present invention relates to a method, device, and system for improved mapping and/or ablation of a tissue. The device may generally include an elongate body and a distal assembly affixed to the elongate body that includes a treatment electrode having a conductive mapping region and a selectively conductive ablation region that is conductive of high-frequency current and substantially non-conductive of low-frequency current. Alternatively, the device may generally include a treatment electrode having a conductive mapping or ablation region and a region that is coated with an electrically insulated but thermally conductive layer.

Systems and methods for performing endometrial ablation

A method and system of providing therapy to a patient's uterus is provided, which can include any number of features. The method can include the steps of inserting a uterine device into the uterus and performing a uterine integrity test to determine that the uterus is intact and not perforated. If it is determined that the uterus is not perforated, a patency test can be performed to determine that the uterine device is not clogged or embedded in tissue. If the uterus is intact and the device is not clogged or embedded in tissue, the uterus can be treated with the uterine device, e.g., uterine ablation. Systems for performing these methods are also disclosed.

Switched diverter circuits for minimizing heating of an implanted lead and/or providing EMI protection in a high power electromagnetic field environment

An energy management system that facilitates the transfer of high frequency energy induced on an implanted lead or a leadwire includes an energy dissipating surface associated with the implanted lead or the leadwire, a diversion or diverter circuit associated with the energy dissipating surface, and at least one switch for diverting energy in the implanted lead or the leadwire through the diversion circuit to the energy dissipating surface. In alternate configurations, the switch may be disposed between the implanted lead or the leadwire and the diversion circuit, or disposed so that it electrically opens the implanted lead or the leadwire when diverting energy through the diversion circuit to the energy dissipating surface. The switch may comprise a single or multi-pole double or single throw switch. The diversion circuit may be either a high pass filter or a low pass filter.

Electrosurgical systems with integrated and external power sources

A surgical system comprising a generator and a surgical instrument configured to receive power from the generator is disclosed. The surgical instrument comprises a housing, a shaft defining a longitudinal axis, an end effector, and an internal charge accumulator. The housing comprises a motor. The end effector is operably responsive to actuations from the electric motor, transitionable between an open and closed configuration, and rotatable about an articulation axis transverse to the longitudinal axis. The generator is incapable of supplying a sufficient power directly to the motor to perform the actuations. The internal charge accumulator is in electric communication with the generator and supplies power to the motor. The internal charge accumulator is chargeable by the generator to a threshold value at a charge rate dependent on a charge level of the internal charge accumulator. The charge rate is independent of a charge expenditure by the surgical instrument.

Multi-purpose sensing and radiofrequency (RF) ablation spiral electrode for catheter

An electrical apparatus includes a spiral electrode and an interface circuit. The spiral electrode is disposed on a distal end of a probe for insertion into a body of a patient. The interface circuit is configured to (a) transfer a radiofrequency (RF) ablation signal to the electrode for ablating tissue in the body, (b) output a voltage that develops across the electrode in response to an external magnetic field, for measuring a position of the distal end in the body, and (c) transfer electrical current through the electrode for measuring a resistivity that is indicative of tissue temperature in a vicinity of the electrode.

УСТРОЙСТВО И СПОСОБ РЕКОНСТРУКЦИИ ВЛАГАЛИЩА

... 1. Устройство для реконструкции ткани женских гениталий, содержащее:обрабатывающий наконечник и рукоятку, причемобрабатывающий наконечник соединен с дистальным концом рукоятки посредством средств соединения,дистальный конец обрабатывающего наконечника имеет прямоугольную, коническую, сферическую, полусферическую, овальную или круглую форму и имеет поверхность, содержащую один или большее количество элементов для подачи энергии, имеющих внутреннюю поверхность и контактирующую с эпителием поверхность, а указанное устройство дополнительно содержит одно или большее количество из следующего:(a) один или большее количество датчиков температуры для измерения температуры на эпителии и под ним,(b) один или большее количество датчиков направления и(c) одна или большее количество меток глубины, показывающих глубину проникновения обрабатывающего наконечника во влагалище.2. Устройство по п. 1, в котором обрабатывающий наконечник оборудован держателем пальца.3. Устройство по п. 2, в котором обрабатывающий ...

POSITION-CONTROLLED THERMOCOUPLE

A thermocouple assembly may feature a plurality of temperature sensors formed by thermocouple junctions. The sensors may be disposed upon a positioner, that has a configuration that displaces each of the plurality of temperature sensors from a longitudinal axis of the positioner.

sonda de ablação eletrocirúrgica e sistema compreendendo a mesma

SYSTEM FOR RF HYPERTHERMIA

The invention relates to an energy application system for applying energy to an object like a tumor. The system comprises several energy application devices (3) to be introduced into the object, which are adapted to receive electromagnetic radiation (2) and to generate heat depending on a frequency distribution of the received electromagnetic radiation, wherein the dependency of the heat generation on the frequency distribution of the electromagnetic radiation is different for different energy application devices. The system further comprises an electromagnetic radiation providing device (1) for providing electromagnetic radiation having a certain frequency distribution for stimulating the energy application devices to generate a predefined heat pattern. Since the dependency of the heat generation on the frequency distribution of the electromagnetic radiation is different for different energy application devices, even a relatively complexly shaped predefined heat pattern can relatively ...

TREATMENT APPARATUS AND METHODS FOR INDUCING MICROBURN PATTERNS IN TISSUE

Treatment apparatus and methods for inducing microburn patterns in tissue. The treatment apparatus comprises a delivery device (10) positionable adjacent to the tissue (34) and a plurality of energy-transfer elements (132). The energy-transfer elements (132) are adapted to contact the skin surface (32) and transfer energy to the tissue (34) over discrete surface contact areas for forming damaged regions in the form of microburns (13) at a corresponding plurality of locations in the tissue (34). Energy may be transferred between the energy-transfer elements (132) and the tissue (34) by either electrical conduction or thermal conduction. Adjacent microburns (13) are separated by non-damaged regions (33), which promotes wound healing and efficacy.

METHOD AND SYSTEM FOR SKIN TREATMENT

Methods are provided for remodeling and/or reducing target tissue, body contouring, tightening skin tissue and many other skin rejuvenation processes and treatments, as well as for pain relief, applying electromagnetic waves to the targeted areas of the body. The electromagnetic waves cause thermal and non-thermal effects and their parameters may be finely adjusted to achieve more indications and/or higher efficiency treatment in one session. The electromagnetic energy may be applied via one or more applicators without touching the skin.

ELECTRODE ASSEMBLY AND HANDPIECE WITH ADJUSTABLE SYSTEM IMPEDANCE, AND METHODS OF OPERATING AN ENERGY-BASED MEDICAL SYSTEM TO TREAT TISSUE

ПОДАЮЩЕЕ УСТРОЙСТВО С КОАКСИАЛЬНЫМ КАБЕЛЕМ, ПРИБОР, СОДЕРЖАЩИЙ УКАЗАННОЕ УСТРОЙСТВО, И СПОСОБ

Группа изобретений относится к медицинской технике. Устройство содержит наружный проводник и внутренний проводник, расположенные приблизительно коаксиально относительно друг друга. Наружный проводник расположен вокруг внутреннего проводника. Наружный проводник и внутренний проводник расположены и выполнены таким образом, чтобы генерировать электромагнитное поле, силовые линии которого проходят от передней поверхности внутреннего проводника к передней поверхности наружного проводника. Предлагаемое устройство содержит также окно подачи энергии, расположенное перед наружным проводником и внутренним проводником. 3 н. и 18 з.п. ф-лы, 9 ил.

УСТРОЙСТВО И СПОСОБ РЕКОНСТРУКЦИИ ВЛАГАЛИЩА

Изобретения относятся к медицинской технике. Устройство с держателем пальца для реконструкции ткани женских гениталий содержит обрабатывающий наконечник (1) и рукоятку (2). Обрабатывающий наконечник (1) соединен с дистальным концом рукоятки (2) с помощью средств (3) соединения. Поверхность дистального конца обрабатывающего наконечника (1) имеет коническую, сферическую, полусферическую, овальную или круглую форму и содержит элементы (4) для подачи энергии, выполненные с возможностью контакта с целевой тканью на 360 градусов, которые пользователь может выборочно включить или выключить. Устройство содержит датчики температуры для измерения температуры на эпителии и под ним, датчики направления и метки глубины, показывающие глубину проникновения обрабатывающего наконечника во влагалище. Датчики направления представляют собой акселерометры или гироскопы и установлены на рукоятке (2) или обрабатывающем наконечнике (1). Захватывающие средства устройства соединены с рукояткой (2) и имеют держатель ...

ПОДАЮЩЕЕ УСТРОЙСТВО С КОАКСИАЛЬНЫМ КАБЕЛЕМ, ПРИБОР, СОДЕРЖАЩИЙ УКАЗАННОЕ УСТРОЙСТВО, И СПОСОБ

КАТЕТЕР С ОХЛАЖДЕНИЕМ НА НЕАБЛЯЦИОННОМ ЭЛЕМЕНТЕ

... 1. Катетер, содержащий:удлиненный корпус катетера;концевой электрод, расположенный дистально относительно корпуса катетера; причем концевой электрод содержит:оболочку, имеющую проксимальный участок шейки и дистальную камеру;опорный элемент, имеющий проксимальный и дистальный участки, при этом проксимальный участок вставлен в участок шейки оболочки, а дистальный участок продолжается в камеру оболочки, причем проксимальный участок имеет сквозное отверстие для текучей среды; иканал для текучей среды, предусмотренный между участком шейки оболочки и проксимальным участком опорного элемента, с образованием прохода для текучей среды между сквозным отверстием и камерой.2. Катетер по п. 1, дополнительно содержащий датчик положения, который по меньшей мере частично заключен в дистальном участке опорного элемента.3. Катетер по п. 1, в котором канал для текучей среды образован на наружной поверхности дистального участка опорного элемента.4. Катетер по п. 3, в котором канал для текучей среды имеет спиральный ...

Lösbarer Isoliereinsatz zur Verwendung in einem Resektoskop

Die Erfindung betrifft einen elektrisch isolierenden Isoliereinsatz zur lösbaren Verbindung mit dem distalen Endbereich eines Resektoskopschaftes, dadurch gekennzeichnet, dass der Isoliereinsatz einen hohlen Abschnitt mit einem länglichen Hohlraum zum Hindurchführen von Durchgangsinstrumenten aufweist und dass der Isoliereinsatz Befestigungsmittel zur lösbaren Verbindung mit dem Resektoskopschaft aufweist. Darüber hinaus ist die Erfindung auch mit einem mit diesem Isoliereinsatz verbundenen Elektrodeninstrument sowie einem diese umfassenden Resektoskop befasst.

Electrosurgical instrument with impedance transformer for delivering microwave energy

An electrosurgical instrument for delivering microwave energy having a predetermined frequency into biological tissue in contact with the instrument, wherein the instrument comprises a first coaxial transmission line having a second coaxial transmission line connected to the distal end thereof, the second coaxial transmission line having a length and a characteristic impedance that are configured to match the impedance of the first coaxial transmission line to the load impedance at the distal end of the distal coaxial transmission line when the instrument is in contact with the tissue, at the operating frequency.

Plasma therapeutic instrument

METHODS AND DEVICES FOR ABLATION

An ablating device has a cover which holds an interface material such as a gel. The cover contains the interface material during initial placement of the device. The ablating device may also have a removable tip or a membrane filled with fluid. In still another aspect, the ablating device may be submerged in liquid during operation.

Methods and devices for ablation

An ablating device has a cover which holds an interface material such as a gel. The cover contains the interface material during initial placement of the device. The ablating device may also have a removable tip or a membrane filled with fluid. In still another aspect, the ablating device may be submerged in liquid during operation.

Method and apparatus for destroying dividing cells

The present invention provides a method and apparatus for selectively destroying dividing cells in living tissue formed of dividing cells and non-dividing cells. The dividing cells contain polarizable intracellular members and during late anaphase or telophase, the dividing cells are connected to one another by a cleavage furrow. According to the present method the living tissue is subjected to electric field conditions sufficient to cause movement of the polarizable intracellular members toward the cleavage furrow in response to a non-homogenous electric field being induced in the dividing cells. The non-homogenous electric field produces an increased density electric field in the region of the cleavage furrow. The movement of the polarizable intracellular members towards the cleavage furrow causes the break down thereof which results in destruction of the dividing cells, while the non-dividing cells of the living tissue remain intact.

Electrosurgical instrument

An electrosurgical instrument for delivering both microwave and radio frequency (RF) energy in which a pair of longitudinally spaced electrodes are combined with an intermediate tuning element to enable both effective bipolar RF ablation and/or coagulation and microwave ablation with a field shape that is constrained around the instrument tip. The instrument comprises a radiating tip disposed at a distal end of a coaxial cable. The tip has a distal electrode and a proximal electrode disposed on a surface of a dielectric body and physically separated by an intermediate portion of the dielectric body. A tuning element is mounted in the intermediate portion.

Vessel sealing system using capacitive RF dielectric heating

Grounded electrode medical implement and system

Vessel sealing system using capacitive RF dielectric heating

Conductive optical element

A device having an optical element with a conductive coating. The device may include an optical element, a conductive material and at least one connector. The conductive material is disposed on at least a portion of the optical element. The optical element, for example, may be an object lens of an endoscope or an optical coupler. The connectors (acting as terminals )) are capable of providing energy (such as electrical energy) to the conductive material. In one aspect, the conductive material is an optically transparent material. Advantageously, the device may allow visualization of an object - such as body tissue or other matter - concurrent with the application of energy to the object via the conductive coating. This allows the user to observe the alteration of tissue and other matter in real time as the energy is delivered.

Positioning cartridge for electrode

A positioning cartridge is disclosed for use during manufacture of an electrode. The positioning cartridge may have a plurality of positioning inserts, each with proximal and distal ends, and a scaffold secured to the proximal ends of each positioning insert. The scaffold may be configured to place the positioning inserts in a defined orientation with respect to each other that corresponds to a plurality of longitudinal bores of the electrode. An electrode may be manufactured using the positioning cartridge. The positioning cartridge may have a plurality of components, such that at least one component is associated with each positioning insert. The plurality of components may be temperature sensors. The positioning cartridge may be configured to position each temperature sensor at a location adjacent an outer surface of the electrode.

ELECTROSURGICAL INSTRUMENT WITH IMPEDANCE TRANSFORMER FOR DELIVERING MICROWAVE ENERGY

An electrosurgical instrument for delivering microwave energy having a predetermined frequency into biological tissue 5 in contact with the instrument, wherein the instrument comprises a first coaxial transmission line having a second coaxial transmission line connected to the distal end thereof, the second coaxial transmission line having a length and a characteristic impedance that are configured to match the 10 impedance of the first coaxial transmission line to the load impedance at the distal end of the distal coaxial transmission line when the instrument is in contact with the tissue, at the operating frequency. WO 2016/203257 PCT/GB2016/051817 SUBSTITUTE SHEET (RULE 26) ...

SYSTEM AND METHOD FOR PULMONARY TREATMENT

An apparatus and method for pulmonary treatment by denervation is provided. The apparatus includes an elongate member configured for insertion into the trachea to a position adjacent a pulmonary plexus. The apparatus further includes at least one energy delivery element disposed on the elongate member. The energy delivery element is positionable to target at least one nerve in the tracheal wall when the elongate member is positioned in the trachea. Energy from the energy delivery element is delivered to the at least one nerve to treat pulmonary symptoms, conditions, and/or diseases, such as asthma, COPD, obstructive lung diseases, or other pulmonary diseases ...

ADJUSTABLE IMPEDANCE ELECTROSURGICAL ELECTRODES

An electrosurgical system is disclosed. The electrosurgical system includes at least one electrosurgical electrode having a resistive element and a capacitive elemen t configured in series. The electrosurgical system also including an electrosurgical generator configured to generate electrosurgical energy having a first frequency which generates a first impedance in the at least one electrode due to capacitive reactance of the capacitive element in serie s. The generator is further configured to adjust the first frequency to at least one other frequency to generate a different impedance in the at least one electrode due to capacitive reactanc e of the capacitive element in series, thereby adjusting the temperature of at least one electrosurgical electrode.

CONDUCTIVE OPTICAL ELEMENT

A device having an optical element with a conductive coating. The device may include an optical element, a conductive material and at least one connector. The conductive material is disposed on at least a portion of the optical element. The optical element, for example, may be an object lens of an endoscope or an optical coupler. The connectors (acting as terminals )) are capable of providing energy (such as electrical energy) to the conductive material. In one aspect, the conductive material is an optically transparent material. Advantageously, the device may allow visualization of an object - such as body tissue or other matter - concurrent with the application of energy to the object via the conductive coating. This allows the user to observe the alteration of tissue and other matter in real time as the energy is delivered.

ELECTROSURGICAL INSTRUMENT WITH IMPEDANCE TRANSFORMER FOR DELIVERING MICROWAVE ENERGY

Electrophysiology catheter design

The present invention relates to a method, device, and system for improved mapping and/or ablation of a tissue. The device may generally include an elongate body and a distal assembly affixed to the elongate body that includes a treatment electrode having a conductive mapping region and a selectively conductive ablation region that is conductive of high-frequency current and substantially non-conductive of low-frequency current. Alternatively, the device may generally include a treatment electrode having a conductive mapping or ablation region and a region that is coated with an electrically insulated but thermally conductive layer.

COMBINATION OF RADIOFREQUENCY AND MAGNETIC TREATMENT METHODS

Methods and an apparatus for treatment of target biological structure by combination of magnet treatment and electromagnetic treatment. The method and apparatus may be used for aesthetic applications, e.g. cellulite treatment, body shaping, skin rejuvenation or enhancing skin appearance.

ELECTRODE ASSEMBLIES WITH NON-CONTACT TEMPERATURE SENSING FOR THERMAL MEASUREMENTS

Devices for directing electromagnetic energy to tissue during cosmetic procedures, as well as methods of treatment and methods of device manufacture. An electrode assembly includes a housing, an electrode, and a thermal sensor arranged inside the housing. The electrode, which includes an aperture, is configured to deliver electrical energy to a targeted area of a patient. The thermal sensor is positioned relative to the aperture of the electrode to provide a field of view through the aperture to a surface of the targeted area. The thermal sensor is configured to generate sensor data indicative of a temperature at the surface of the targeted area, and to thereby provide non-contact temperature sensing.

VAGINAL REMODELING DEVICE AND METHOD

ELECTROSURGICAL APPARATUS TO PERFORM A TISSUE CUT ON THE BODY OF A HUMAN OR ANIMAL PATIENT

Electrosurgical instrument with impedance transformer for delivering microwave energy

An electrosurgical instrument for delivering microwave energy having a predetermined frequency into biological tissue in contact with the instrument, wherein the instrument comprises a first coaxial transmission line having a second coaxial transmission line connected to the distal end thereof, the second coaxial transmission line having a length and a characteristic impedance that are configured to match the impedance of the first coaxial transmission line to the load impedance at the distal end of the distal coaxial transmission line when the instrument is in contact with the tissue, at the operating frequency.

High permittivity electrosurgical electrode coating

A coating for the electrode of an electrosurgical instrument that increases the capacitance of the electrode. The coating comprises a high permittivity material such as barium titanate, lead zirconate titanate, calcium copper titanate, or a conjugated polymer. The coating may have a thickness of 0.0016 inches and can be included with one of more insulative layers.

Conductive optical element

A device having an optical element with a conductive coating. The device may include an optical element, a conductive material and at least one connector. The conductive material is disposed on at least a portion of the optical element. The optical element, for example, may be an object lens of an endoscope or an optical coupler. The connectors (acting as terminals) are capable of providing energy (such as electrical energy) to the conductive material. In one aspect, the conductive material is an optically transparent material. Advantageously, the device may allow visualization of an object - such as body tissue or other matter - concurrent with the application of energy to the object via the conductive coating. This allows the user to observe the alteration of tissue and other matter in real time as the energy is delivered.

Methods and apparatus for controlled RF treatments and RF generator system

Electrosurgical systems and components thereof configured to deliver RF energy to a target site of a human or other animal patient with selectable RF energy delivery profiles, temperature sensors and controls, and/or electrodes configured to more uniformly or effectively delivery energy to target tissue.

Delivery device with coaxial cable, apparatus comprising said device and method

The device comprises an outer conductor (7) and an inner conductor (9) arranged approximately coaxial with each other. The outer conductor surrounds the inner conductor. The outer conductor (7) and the inner conductor (9) are arranged and configured to generate an electromagnetic field with lines of force extending from a front surface (9A) of the inner conductor (9) to a front surface (7C) of the outer conductor (7). The device further comprises an energy delivery window (13) arranged in front of the outer conductor and the inner conductor.

ELECTROSURGICAL INSTRUMENT

An electrosurgical instrument for delivering both microwave and radio frequency (RF) energy in which a pair of longitudinally spaced electrodes are combined with an intermediate tuning element to enable both effective bipolar RF ablation and/or coagulation and microwave ablation with a field shape that is constrained around the instrument tip. The instrument comprises a radiating tip disposed at a distal end of a coaxial cable. The tip has a distal electrode and a proximal electrode disposed on a surface of a dielectric body and physically separated by an intermediate portion of the dielectric body. A tuning element is mounted in the intermediate portion.

HIGH PERMITTIVITY ELECTROSURGICAL ELECTRODE COATING

A coating for the electrode of an electrosurgical instrument that increases the capacitance of the electrode. The coating comprises a high permittivity material such as barium titanate, lead zirconate titanate, calcium copper titanate, or a conjugated polymer. The coating may have a thickness of 0.0016 inches and can be included with one of more insulative layers.

APPARATUS AND METHODS FOR TREATING A TUMOR WITH AN ALTERNATING ELECTRIC FIELD AND FOR SELECTING A TREATMENT FREQUENCY BASED ON ESTIMATED CELL SIZE

Tumors can be treated with an alternating electric field. The size of cells in the tumor is determined (1110) prior to the start of treatment and a treatment frequency is chosen (1120) based on the determined cell size. The cell size can be estimated during the course of treatment and the treatment frequency is adjusted to reflect changes in the cell size. A suitable apparatus for this purpose includes a device for measuring the tumor impedance, an AC signal generator with a controllable output frequency, a processor for estimating the size of tumor cells and setting the frequency of the AC signal generator based thereon and at least one pair of electrodes operatively connected to the AC signal generator such that an alternating electric field is applied to the tumor.

SYSTEM AND METHOD FOR ENDOMETRIAL ABLATION

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., CO2) 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.

Electrosurgical instrument

An electrosurgical instrument for delivering both microwave and radiofrequency (RF) energy in which a pair of longitudinally spaced electrodes are combined with an intermediate tuning element to enable both bipolar RF ablation and/or coagulation and microwave ablation with a field shape that is constrained around the instrument tip. The instrument comprises a radiating tip 212 disposed at a distal end of a coaxial cable 202. The tip has a distal electrode 216 and a proximal electrode 214 disposed on a surface of a dielectric body to function as both RF electrodes and a microwave antenna and physically separated by an intermediate portion of the dielectric body. A tuning element 224 is mounted in the intermediate portion to alter microwave field shape emitted from the antenna.

Electrode for a system for heating biological tissue via RF energy

An electrode is disclosed for use in a system for heating biological tissue via radio-frequency energy. The electrode comprises a plurality of electrically conductive pins 42 projecting from, and in electrical contact with, an electrically conductive common base 40. The base 40 is connectible to a source of RF energy and the spaced ends of the pins remote from the base have contact regions 44 for introducing RF energy from the source into the biological tissue. Each contact region is sufficiently small to achieve uniform dielectric heating in the biological tissue beneath the contact region at the frequency of the applied RF energy. The electrode may be mounted in an applicator and may be rotated by a motor. The RF supply may be operable at a frequency of 30-100 MHz and a power of 100-400 Watts.

Adjustable impedance electrosurgical electrodes

ADJUSTABLE IMPEDANCE ELECTROSURGICAL ELECTRODES An electrosurgical system is disclosed. The electrosurgical system includes at least one electrosurgical electrode 3 having a resistive element and a capacitive element configured in series. The electrosurgical system also including an electrosurgical generator 20 configured to generate electrosurgical energy having a first frequency which generates a first impedance in the at least one electrode due to capacitive reactance of the capacitive element in series. The generator 20 is further configured to adjust the first frequency to at least one other frequency to generate a different impedance in the at least one electrode 3 due to capacitive reactance of the capacitive element in series, thereby adjusting the temperature of at least one electrosurgical electrode 3. 2 0 3 -, 2 p (P ELECTROSURGICAL 120 lo '62 T ,-20 i---27 28 CONT ROLLER HVSRF QUT PUT 25-HVP ST AGE )_132 MICROPROCESSOR 22 26-,\ SENSOR MEMORY CIRCUIT R ...

An end-effector assembly including a pressure-sensitive layer disposed on an electrode

AN END-EFFECTOR ASSEMBLY INCLUDING A PRESSURE-SENSITIVE LAYER DISPOSED ON AN ELECTRODE An end-effector assembly (100) includes first and second jaw members (110, 120) disposed in opposing relation relative to one another, at least one of the jaw members (110, 120) moveable from an open position to a closed position for grasping tissue therebetween. First and second conductive plates (212, 222) are disposed on opposing surfaces of corresponding first and second jaw members (110, 120). First and second compressible membranes (312, 322) are configured to electrically connect corresponding first and second conductive plates (212, 222) to a surgical field when subjected to a compression bias.

Conductive optical element

A device having an optical element with a conductive coating. The device may include an optical element, a conductive material and at least one connector. The conductive material is disposed on at least a portion of the optical element. The optical element, for example, may be an object lens of an endoscope or an optical coupler. The connectors (acting as terminals) are capable of providing energy (such as electrical energy) to the conductive material. In one aspect, the conductive material is an optically transparent material. Advantageously, the device may allow visualization of an object - such as body tissue or other matter - concurrent with the application of energy to the object via the conductive coating. This allows the user to observe the alteration of tissue and other matter in real time as the energy is delivered.

METHODS AND APPARATUS FOR CONTROLLED RF TREATMENTS AND RF GENERATOR SYSTEM

... 5 Electrosurgical systems and components thereof configured to deliver RF energy to a target site of a human or other animal patient with selectable RF energy delivery profiles, temperature sensors and controls, and/or electrodes configured to more uniformly or effectively delivery energy to target tissue.

POSITIONING CARTRIDGE FOR ELECTRODE

A positioning cartridge is disclosed for use during manufacture of an electrode. The positioning cartridge may have a plurality of positioning inserts, each with proximal and distal ends, and a scaffold secured to the proximal ends of each positioning insert. The scaffold may be configured to place the positioning inserts in a defined orientation with respect to each other that corresponds to a plurality of longitudinal bores of the electrode. An electrode may be manufactured using the positioning cartridge. The positioning cartridge may have a plurality of components, such that at least one component is associated with each positioning insert. The plurality of components may be temperature sensors. The positioning cartridge may be configured to position each temperature sensor at a location adjacent an outer surface of the electrode.

APPARATUS AND METHODS FOR TREATING A TUMOR WITH AN ALTERNATING ELECTRIC FIELD AND FOR SELECTING A TREATMENT FREQUENCY BASED ON ESTIMATED CELL SIZE

Tumors can be treated with an alternating electric field. The size of cells in the tumor is determined (1110) prior to the start of treatment and a treatment frequency is chosen (1120) based on the determined cell size. The cell size can be estimated during the course of treatment and the treatment frequency is adjusted to reflect changes in the cell size. A suitable apparatus for this purpose includes a device for measuring the tumor impedance, an AC signal generator with a controllable output frequency, a processor for estimating the size of tumor cells and setting the frequency of the AC signal generator based thereon and at least one pair of electrodes operatively connected to the AC signal generator such that an alternating electric field is applied to the tumor.

instrumento de hemostase e dispositivo cirúrgico para a hemostase de hemorragias

Methods and systems for endometrial ablation utilizing radio frequency

Methods, systems and devices for endometrial ablation. In accordance with a method, a working end of an RF ablation device is positioned in a patient uterus to contact endometrial tissue, the working end comprising a dielectric wall capable of non-expanded and expanded shapes. An indicator mechanism is operatively coupled to the wall and configured to indicate non-expanded and expanded shapes of the wall.

VAGINAL REMODELING DEVICE AND METHOD

This invention provides devices and methods for remodeling the female genital tissue, the device comprising a treatment tip, wherein the distal end of the treatment tip is conical, spherical, hemispherical, oval or circular in shape. The device further comprises one or more energy delivery elements for simultaneous cooling of the vaginal epithelium and transmission of energy for heating the tissues underneath the epithelium. In one embodiment, said device may further comprise one or more of the following: one or more temperature sensors for measuring the temperature at or below the epithelium; one or more directional sensors mounted on the hand piece or treatment tip; and one or more depth markers to show the depth of penetration of the treatment tip into the vagina. In another embodiment, this invention provides a device having a finger holder with electrodes for remodeling the female genital tissue.

Electrosurgical Instrument

An electrosurgical instrument 1 for delivering microwave energy into a biological tissue 21 at a predetermined operating frequency. The instrument comprises a first coaxial transmission line 3 and a second coaxial transmission-line 5. Distal end of the first transmission-line is connected the proximal end of the second transmission-line. The second transmission-line has a length and a characteristic impedance configured to match the impedance of the first transmission-line to a load impedance at the distal end of the second transmission-line when it is in contact with the tissue at the operating frequency. The second inner and outer conductors may be exposed at the proximal end face of the second coaxial transmission-line for tissue contact. There may be a third coaxial transmission-line 33,fig.11, with its distal end connected to the proximal end of the second transmission-line and its proximal end for contact with the tissue, where the third transmission-lines characteristic impedance ...

METHODS AND DEVICES FOR ABLATION

... ²²²An ablating device (522) has a cover (460) which holds an interface material ²such as a gel. The cover (460) contains the interface material during initial ²placement of the device (522). The ablating device (522) may also have a ²removable tip or a membrane (520) filled with fluid. In still another aspect ²the ablating device (522) may be submerged in liquid during operation.² ...

POSITION-BIASING THERMOCOUPLE

A thermocouple assembly may feature a plurality of temperature sensors formed by thermocouple junctions. The sensors may be disposed upon a substrate, that has a curvature that biases each of the plurality of temperature sensors in a desired direction.

THERMALLY ISOLATED THERMOCOUPLE

A thermocouple assembly may feature a plurality of temperature sensors formed by thermocouple junctions. The sensors may be disposed within an inner diameter of the tubular element and sealed within the tubular element by thermally conductive material. An air gap may be defined by the thermally conductive material and the interior diameter of the tubular element between each pair of adjacent temperature sensors to improve thermal isolation.

Energy based devices and methods for treatment of patent foramen ovale

Methods and apparatus for treatment of patent foramen ovale (PFO) provide for applying energy to tissues adjacent the PFO with a catheter device to substantially close the PFO acutely. Apparatus generally includes a catheter device having at least one energy transmission member at or near its distal end configured to apply energy to PFO tissues to acutely, substantially close the PFO. Applied energy may be monopolar or bipolar radiofrequency energy or any other suitable energy, such as laser, microwave, ultrasound, resistive heating or the like. Some embodiments of a catheter device fuirther include one or more tissue apposition members near the distal end for helping bring PFO tissues together, such as a PFO covering member, a vacuum applying member and/or the like. PFO closure via energy-based approaches of the invention may help prevent stroke, treat migraine headache, and possibly treat or prevent other medical conditions.

Ablation device with articulated imaging transducer

A system for imaging and treating tissue comprises a probe having a deflectable distal tip for carrying an imaging array and a delivery needle for advancement within a field of view of the imaging array. Optionally, the needle will carry a plurality of tines which may be selectively radially deployed from the needle. The imaging array will preferably be provided in a separate, removable component.

Surgical retrieval device radially deployable from a collapsed position to a snare or cauterization loop

A surgical instrument featuring a combination cauterizing and surgical capture component. The instrument is deployable from a distal end of a lumen to a first position partially exposing a cauterizing loop and having restrained radially deployable members wherein a plurality of cauterizations may be performed with said cauterizing loop in an unobstructed view of a camera or lens. The instrument is deployable to a second position fully translated from the lumen whereafter the plurality of radially positionable members may be released by activation of a release member allowing the biased members to deploy radially around an axis running through the loop.

System and method for endoluminal and translumenal therapy

A system for conducting a denervation of the neural plexus adjacent the renal artery of a patient comprises a first elongate member operatively coupled to a testing element, a second elongate member having a distal portion coupled to an ablative element, and a controller configured to: activate an ablative element to selectively denervate a portion of the neural plexus which is positioned adjacent the ablative element; monitor a level of a compound in blood sampled from the testing element of the first elongate member; and modulate the activation of the ablative element based at least in part upon the level of renin monitored using the testing element.

Systems and methods for turbinate reduction

The present disclosure includes an electrosurgical apparatus for treating tissue at a target site. The apparatus has a shaft with a proximal end and a distal end, and the distal end includes an active disposed laterally on the shaft distal end and return electrode. The return electrode may have a plurality of apertures through it, which are fluidly connected to a fluid delivery element, operable to deliver a conductive fluid to the shaft distal end. The return electrode may encircle at least a portion of the shaft and may extend distally and proximally from the active electrode.

Vacuum Ablation Apparatus and Method

Ablation devices and associated methods are provided for use in ablating a target tissue, such as a cystic lesion. The ablation apparatus includes an integral or connected elongate probe and a deployable structure that is axially slidable along the outer surface of the electrode. The electrode can be disposed at the probe's distal end region for ablating tissue when the electrode(s) are activated to create an ablated margin of tissue at least partially surrounding the target tissue. Suction can be applied with a vacuum source operably connected to the proximal end region of the deployable structure. A target tissue, such as a cystic lesion, can be drawn against the surface of the electrical probe.

Electrosurgical device with internal digestor electrode

An electrosurgical wand is described, for treating a target tissue using electrosurgical energy, which has an elongate shaft with a handle end and a distal end. A first active electrode surface is disposed on the distal end of the shaft and a first digester electrode surface is recessed away from the first active electrode surface and electrically connected with the first active electrode surface. An aspiration aperture is also disposed adjacent the first active electrode surface and fluidly connected with an aspiration lumen, wherein the first digester electrode surface is disposed within the aspiration lumen.

System and method for endometrial ablation

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 2 ) 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.

Devices and methods for performing procedures on a breast

A needle is used to mark a tissue area of interest. The needle may have one or more indicators which indicate selected angular orientations relative to the needle. The indicators may also be coupled to anchors which are deployed in the tissue to anchor the needle in the tissue. The needle may be positioned to guide an excisional device to remove tissue.

Medical needles and electrodes with improved bending stiffness

A device for penetrating tissue includes an elongated element having a distal end, a proximal end, a body extending between the distal and the proximal ends, and a lumen located within at least a portion of the body, wherein the lumen has a cross-sectional shape that is a polygon. A device for penetrating tissue includes an elongated element having a distal end, a proximal end, and a body extending between the distal and the proximal ends, at least a portion of the body having a cross-sectional profile that is a polygon, wherein the elongated element is a cannula.

Apparatus and Method for Ablating Tissue

A control system alters one or more characteristics of an ablating element to ablate tissue. In one aspect, the control system delivers energy nearer to the surface of the tissue by changing the frequency or power. In another aspect, the ablating element delivers focused ultrasound which is focused in at least one dimension. The ablating device may also have a number of ablating elements with different characteristics such as focal length.

Method and Apparatus for Tissue Ablation

A method for ablation in which a portion of atrial tissue around the pulmonary veins of the heart is ablated by a first elongated ablation component and a second elongated ablation component movable relative to the first ablation component and having means for magnetically attracting the first and second components toward one another. The magnetic means draw the first and second components toward one another to compress the atrial tissue therebetween, along the length of the first and second components and thereby position the device for ablation of the tissue.

Apparatus and Method for Heating Biological Targets

An apparatus and method for selectively heating a biological target within a treatment region of a subject is disclosed. The method includes administering to the subject a dielectric heating modulator that becomes associated with the biological target. The method also includes positioning the treatment region between first and second electrodes connected to a generator, and activating the generator to apply an alternating electric field between the first and second electrodes and across the treatment region to thereby heat the treatment region. The dielectric heating modulator causes the biological target to heat at a faster rate than non-targets within the treatment region, which preferably results in the killing of the biological target.

Energy facilitated composition delivery

A device for delivering a composition to a hollow body region is disclosed. In one aspect, the device comprises a first longitudinal member and a second longitudinal member. Both of the longitudinal members may comprise conductive electrodes. The longitudinal members are further configured to be connected to an energy source such that the conductive electrodes are configured to generate an energy field. At least one of the longitudinal members further comprises a delivery element configured to deliver at least one composition to the body region, such that the composition is delivered in a direction that is influenced by the generated energy field. In one aspect, the body region is a vessel comprising an occlusion.

Contact sensor and sheath exit sensor

A system and method is provided that allows for determining the local impedance of one or more electrodes of an electrode catheter. Such local impedance may be utilized to identify the relative position of an electrode catheter to a sheath of a guiding introducer. In another arrangement, local impedance of a catheter electrode can be utilized to calibrate a catheter electrode to provide improved contact sensing.

Tissue extraction devices and methods

A tissue cutting device has an outer sleeve with a distal window and an inner cutting sleeve which moves past the window to cut tissue. The inner cutting sleeve has a lumen which may have a larger proximal diameter than distal diameter. A perimeter of the window may comprise a dielectric material. A distal edge of the inner sleeve may be displaced inwardly.

Articulating ablation device and method

An ablation device including a handle portion, a shaft and at least one cable. The shaft extends distally from the handle portion and includes an inner conductor and an outer conductor that substantially surrounds at least a portion of the inner conductor. The cable extends from the handle portion along at least a portion of the shaft. The distal tip of the inner conductor is positionable distally beyond a distal-most end of the outer conductor. In response to movement of the at least one cable relative to the handle portion, the distal tip of the outer conductor is movable form a first position where the distal tip is substantially aligned with a longitudinal axis defined by the outer conductor to at least a second position where the distal tip is disposed at an angle relative to the longitudinal axis.

Renal nerve denervation via the renal pelvis

Apparatus, systems, and methods provide access to the renal pelvis of a kidney to treat renal nerves embedded in tissue surrounding the renal pelvis. Access to the renal pelvis may be via the urinary tract or via minimally invasive incisions through the abdomen and kidney tissue. Treatment is effected by exchanging energy, typically delivering heat or extracting heat through a wall of the renal pelvis, or by delivering active substances.

Devices and methods for bipolar and monopolar procedures

An integrated catheter assembly comprises a bipolar electrode tool and a monopolar electrode tool. The catheter assembly enables an operator to perform both bipolar and monopolar procedures on tissue without having to withdraw the catheter assembly, without having to remove or replace any part of the catheter assembly, and/or without having to insert any additional tools or parts. The catheter assembly may comprise a switching mechanism such that when one of the bipolar electrode tool and monopolar electrode tool is electrically activated, the other of the bipolar electrode tool and monopolar electrode tool cannot be electrically activated. In one embodiment of a method, the operator uses a single catheter assembly for applying bipolar current for tissue electro-therapy and monopolar current for tissue cutting.

Fine dissection electrosurgical device

An electrosurgical wand. At least some of the illustrative embodiments are electrosurgical wands including an elongate shaft that defines a handle end and a distal end, a first discharge aperture on the distal end of the elongate shaft, a first active electrode of conductive material disposed on the distal end of the elongate shaft, the first active electrode has an edge feature, a first return electrode of conductive material disposed a substantially constant distance from the first active electrode, and an aspiration aperture on the distal end of the elongate shaft fluidly coupled to a second fluid conduit.

Devices and methods for performing procedures on a breast

A guide element is used to guide a cutting device when removing breast tissue. The cutting device may have a tissue collection element for collecting tissue. The tissue collection element may be detachable so that the collection element may be removed independent from the cutting device.

Off-wall and contact electrode devices and methods for nerve modulation

Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a system for nerve modulation. The system may include an elongate shaft and a nerve modulation assembly disposed at the distal end of the shaft. The nerve modulation assembly may have a collapsed configuration and an expanded configuration. The nerve modulation assembly may include an inner basket and an outer basket. The inner basket may include a plurality of electrode struts. Each electrode strut may include an electrode. The outer basket may include a plurality of spacer struts.

Vaginal remodeling device and method

This invention provides devices and methods for remodeling the female genital tissue, the device comprising a treatment tip, wherein the distal end of the treatment tip is conical, spherical, hemispherical, oval or circular in shape. The device further comprises one or more energy delivery elements for simultaneous cooling of the vaginal epithelium and transmission of energy for heating the tissues underneath the epithelium. In one embodiment, said device may further comprise one or more of the following: one or more temperature sensors for measuring the temperature at or below the epithelium; one or more directional sensors mounted on the hand piece or treatment tip; and one or more depth markers to show the depth of penetration of the treatment tip into the vagina. In another embodiment, this invention provides a device having a finger holder with electrodes for remodeling the female genital tissue.

Minimally Invasive Devices for Multi-Fluid Tissue Ablation

Prostate treatment using fluid stream to resect prostate tissue, thereby relieving symptoms of conditions such as BPH, prostatitis, and prostatic carcinoma. A device having a fluid delivery element is positioned within a lumen of the urethra within the prostate. A fluid stream is directed outwardly from the fluid delivery element toward a wall of the urethral lumen. The fluid delivery element is moved to scan the fluid stream over the wall to remove a volume of tissue surrounding the lumen. The fluid may be combined with therapeutically active substances or with substances that increase resection efficiency. Fluid force may be adjusted to provide selective tissue resection such that soft tissue is removed while harder tissue is left undamaged. In order to gain a working space within the urethra, another fluid may be introduced to insufflate the urethra in the region of treatment.

Resection loop for tissue resection and related method of use

A medical device includes a sheath extending from a proximal end to a distal end and having a lumen extending therethrough and an end-effector disposed at the distal end of the sheath including a first resection loop configured to resect tissue and a secondary tool including one of a second resection loop and a tissue-vaporizing structure mounted distally to the first resection loop.

Multi-button electrosurgical apparatus

A multi-button electrosurgical apparatus includes a housing having a passage extending therethough, a distal end configured to support an electrode; at least four switches disposed on a surface of the housing configured to be selectively activated by a user; and three wires connected between the housing and a connector, the connector configured to be operatively coupled to an electrosurgical generator, a first wire being coupled to the electrode and configured to receive electrosurgical energy from the electrosurgical generator, a second wire being coupled to a first switch and configured to generate a first activation signal and a third wire being coupled to a second switch and configured to generate a second activation signal, wherein a third and fourth switch are coupled to the first wire and the second or third wire via a respective reactive switching element configured to generate third and forth activation signals.

Flow controlled radiofrequency medical balloon

A medical balloon for transmitting radiofrequency energy to a body vessel, the medical balloon comprising at least one pressurizable expanded state, the medical balloon comprising at least one electrical conductor, at least one fluid inlet and at least one fluid outlet providing a fluid flow path through the balloon, and at least one flow restrictor external to the medical balloon, wherein in the pressurizable expanded state, the balloon comprising an electrically conductive fluid circulated through the fluid flow path, the at least one electrical conductor is configured to conduct radiofrequency energy to the electrically conductive fluid and the external flow restrictor restricts fluid flow to maintain the balloon at a predetermined internal pressure.

Ablation catheter with flexible tip

A flexible tip electrode for an ablation catheter is disclosed. The catheter includes a catheter body and a hollow elongate tip electrode disposed at a distal end of the catheter body. The electrode includes a sidewall provided with one or more elongate gaps extending therethrough. The one or more elongate gaps providing flexibility in the sidewall for bending movement of the tip electrode relative to a longitudinal axis of the catheter body.

Reusable electrode and disposable sheath

A surgical instrument, such as an electrical ablation device, including a first elongate body having an insert and a second elongate body having an electrically insulative sheath that defines a bore. A mating element mates the elongate bodies when at least a portion of the insert is received within the bore. The second elongate body is configured to receive electrical energy from the first elongate body and transmit the electrical energy to an electrode. In certain embodiments, the electrical ablation device may include first and second elongate bodies. The first includes an electrically conductive insert configured to electrically couple to an energy source and apply the electrical energy to tissue, and the second includes an electrically insulative sheath defining a bore configured to receive the insert therethrough and move proximally or distally relative to the insert.

Electrosurgical Devices and Methods of Use Thereof

In some embodiments, an electrosurgical device includes a shaft, a first U-shaped electrode at a distal end of the shaft, and a second blade shaped electrode at the distal end of the shaft. The second electrode includes a spherical distal end. And the second electrode is substantially coplanar with the first electrode such that the first electrode surrounds a perimeter of the second electrode. The second electrode is spaced from the first electrode by an aperture. In some embodiments, an electrosurgical device includes a shaft, a first electrode at a distal end of the shaft defining an aperture and comprising a pointed tip, and a second electrode disposed at the distal end of the shaft that is substantially coplanar with the first electrode such that the first electrode surrounds a perimeter of the second electrode. The second electrode is spaced from the first electrode by the aperture.

Method of and apparatus for positioning and maintaining the position of endoscopic instruments

The present invention provides an apparatus for, and a method of, accurate positioning of endoscopic instruments. Accurate positioning of the instruments is accomplished through the inclusion of a steering ability within the device. After the endoscopic instrument is properly positioned, the present invention may use rapid exchange technology, soft locks, and mechanical locks to maintain the position of the endoscopic instrument. Rapid exchange technology is used to minimize displacement forces present on the guidewire or catheters. Soft locks and mechanical locks resist movements caused by displacement forces.

Methods and systems for controlled deployment of needle structures in tissue

A system for deploying needles in tissue includes a controller and a visual display. A treatment probe has both a needle and tines deployable from the needle which may be advanced into the tissue. The treatment probe also has adjustable stops which control the deployed positions of both the needle and the tines. The adjustable stops are coupled to the controller so that the virtual treatment and safety boundaries resulting from the treatment can be presented on the visual display prior to actual deployment of the system.

Bladder denervation for treating overactive bladder

A device and method for transvaginal or transrectal treatment of a bladder pathology. The device includes an elongate body that includes a longitudinal axis, a handle at one end of the body, a head at the other end of the body, and a shaft between the handle and the head. The head includes a substantially flat surface and one or more retractable needle electrodes extending through the flat surface. The method includes inserting a probe into a vagina or rectum of a patient, where the probe includes a head portion comprising one or more retractable needle electrodes; heating one or more pelvic nerves supplying the patient's bladder by emitting radiofrequency energy from the one or more needle electrodes; and as a result of the heating, damaging the one or more pelvic nerves.

Renal nerve modulation devices

Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a renal nerve modulation device. The renal nerve modulation device may include an elongate shaft. A balloon may be coupled to the shaft. The balloon may have a hydrophilic electrode region. A flexible electrode may be coupled to the shaft and may be disposed within the balloon. The flexible electrode may have a plurality of openings formed therein.

Electrosurgical unit and system

Systems, such as an electrosurgical unit, and method for use with an active electrode and a plurality of return electrodes are disclosure. An electrosurgical treatment is provided to tissue via the active electrode at a treatment site and a first return electrode of the plurality of return electrodes at the treatment site. An impedance measurement is received or determined of an impedance in the tissue between the active electrode at the treatment site and a second return electrode of the plurality of return electrodes at a site remote from the treatment site.

System, method and computer-accessible medium for in-vivo tissue ablation and/or damage

Systems, methods and computer-accessible mediums can be provided that can establish particular parameters for electric pulses based on a characteristic(s) of the tissue(s), and control an application of the electric pulses to tissue(s) for a plurality of automatically controlled and separated time periods to ablate the tissue(s) through mediation of membrane potential and through inducing the cells through a plurality of charge-discharge cycles such that an electroporation of a majority of the tissue(s) is prevented or reduced.

TREATMENT DEVICE AND TREATMENT METHOD USING SAME

A high-frequency treatment device according to the present invention can comprise: a handpiece; a plurality of needles formed on one side of the handpiece so as to be able to come out and retract, and receiving a high-frequency current; and a pressing part disposed in the coming out and retracting direction of the plurality of needles, and tensing the skin by applying a predetermined pressure to the skin. The high-frequency treatment device according to the present invention has an effect of enabling pain occurring due to the insertion of a plurality of conventional needles to be alleviated by adjusting the tension of a patient's skin before inserting a plurality of needles such that the needles are smoothly inserted into the skin. 1. An RF energy treatment apparatus , comprising:a handpiece;a plurality of needles formed to advance and retract on one side of the handpiece and supplied with a high frequency current; anda pressurization unit positioned in a direction in which the plurality of needles advances and retracts and providing tension to a skin by applying given pressure to the skin.2. The RF energy treatment apparatus of claim 1 , further comprising a sensing unit sensing a force of the pressurization unit applied to the skin so that the tension of a given amount or more is generated in the skin before the plurality of needles is inserted into the skin.3. The RF energy treatment apparatus of claim 2 , further comprising an indicating unit indicating so that a user is capable of recognizing in case that the tension of the skin by the pressurization of the pressurization unit reaches a given value or more in the sensing unit.4. The RF energy treatment apparatus of claim 2 , wherein if the tension of the skin by the pressurization of the pressurization unit has the given value or more claim 2 , the sensing unit transmits a signal to a controller so that the plurality of needles is inserted into the skin simultaneously or sequentially.5. The RF energy treatment ...

FLEXIBLE ELECTRODE

A flexible electrode includes an internal spring with an increased spring rate and/or distal-end and proximal-end turns having increased diameters. In an embodiment, a catheter electrode comprises an electrode body defining a cavity therein, the cavity comprising a first diameter; and a spring disposed within the cavity, the spring comprising a second diameter; wherein the first diameter is equal to the second diameter. 1. A catheter electrode comprising:an electrode body defining a cavity therein, the cavity comprising a first diameter; anda spring disposed within the cavity, the spring comprising a second diameter;wherein the first diameter is equal to the second diameter.2. The catheter electrode of claim 1 , wherein the electrode body is flexible.3. The catheter electrode of claim 1 , wherein the first diameter comprises a diameter of the cavity.4. The catheter electrode of claim 1 , wherein the spring comprises a plurality of turns claim 1 , wherein the plurality of turns comprises a distal-end turn and a proximal-end turn claim 1 , and wherein the second diameter comprises an outer diameter of at least one of the distal-end turn and the proximal-end turn.5. The catheter electrode of claim 4 , further comprising:a distal cap portion adjacent to the distal-end turn; anda proximal stem portion adjacent to the proximal-end turn.6. The catheter electrode of claim 5 , wherein the distal-end turn and the distal cap portion are welded together to form a first contact surface; and wherein the proximal-end turn and the proximal stem portion are welded together to form a second contact surface.7. The catheter electrode of claim 1 , wherein the catheter tip electrode is irrigated.8. The catheter electrode of claim 1 , further comprising a thermocouple or thermistor.9. The catheter electrode of claim 1 , wherein the spring has a spring rate of about 150 grams per inch or greater.10. A catheter electrode comprising:an electrode body, the electrode body defining a cavity ...

RADIOFREQUENCY TREATMENT PROBE FOR TREATING VAGINAL LAXITY AND ASSOCIATED SYSTEMS AND METHODS

The present invention is related to a radiofrequency treatment probe and method delivering radiofrequency for controlled heating of tissue within the vagina for the treatment of vaginal laxity. The treatment probe may include a curved, rounded disposable treatment tip that may be designed to accommodate vaginal anatomy. An electrode assembly may be coupled to the treatment tip, wherein the electrode coupled to the treatment tip may be configured to transfer radiofrequency energy through vaginal skin surface to the tissue. A temperature measuring feature may include or be coupled to the electrode assembly, wherein the electrode assembly may be configured to regulate and maintain a pre-determined skin temperature. A radiofrequency handle may be configured to connect to a disposable treatment tip. A connector may be configured to connect to the radiofrequency handle to a radiofrequency generator. A protective apparatus may be configured to protect the radiofrequency handle. 1. A treatment probe comprising:a. a curved, rounded treatment tip designed to accommodate vaginal anatomy;b. an electrode assembly coupled to the treatment tip, wherein the electrode coupled to the treatment tip is configured to transfer radiofrequency energy to specific vaginal structures;c. a temperature measuring feature coupled to the electrode assembly, wherein the temperature measuring feature coupled to the electrode assembly is configured to monitor and regulate electrode and skin temperature;d. a connector configured to connect the treatment tip to a radiofrequency generator.2. The treatment probe according to further comprising a protective apparatus configured to protect the treatment tip.3. The treatment probe according to wherein the treatment tip is connected to the radiofrequency generator by a radiofrequency handle claim 1 , and wherein the radiofrequency handle is configured to be reusable.4. The treatment probe according to wherein the electrode assembly comprises:a. a conductive ...

Method and Devices for Treating Atrial Fibrillation by Mass Ablation

Apparatus and method for ablating target tissue including a non-linear area of tissue in the left atrium of a patient. The method can include selecting an ablation apparatus having an ablator with a tissue engagement section, penetrating a chest cavity of the patient, and identifying the target tissue. The method can also include positioning the ablation apparatus adjacent to the target tissue so that the tissue engagement section can transfer ablation energy to the target tissue. The method can further include energizing the tissue engagement section with ablation energy in order to create a footprint on the non-linear area of tissue in the left atrium and to reduce an overall mass of excitable tissue in the left atrium.

INJECTATE DELIVERY DEVICES, SYSTEMS AND METHODS

An injectate delivery device for expanding tissue is provided. The injectate delivery device comprises: at least one fluid delivery tube comprising a proximal end, a distal end and a lumen therebetween; at least one fluid delivery element in fluid communication with the at least one fluid delivery tube lumen; a radially expanding element comprising the at least one fluid delivery element; a supply of vacuum constructed and arranged to cause tissue to tend toward the at least one fluid delivery element; and at least one control constructed and arranged to perform a function. The at least one control can be constructed and arranged to expand the radially expandable element and activate the supply of vacuum. Systems and method of injectate delivery are also provided. 1. An injectate delivery device for expanding tissue comprising:at least one fluid delivery tube comprising a proximal end, a distal end and a lumen therebetween;at least one fluid delivery element in fluid communication with the at least one fluid delivery tube lumen;a radially expanding element comprising the at least one fluid delivery element;a supply of vacuum constructed and arranged to cause tissue to tend toward the at least one fluid delivery element; andat least one control constructed and arranged to:expand the radially expandable element; andactivate the supply of vacuum;wherein the device is constructed and arranged to deliver an injectate to target tissue through the at least one fluid delivery element.2. The injectate delivery device according to any claim herein , wherein the at least one control is further constructed and arranged to advance the at least one fluid delivery element.3. The injectate delivery device according to claim 2 , wherein the at least one control is constructed and arranged to advance the at least one fluid delivery element while limiting force applied to fluid delivery element.4. The injectate delivery device according to claim 2 , further comprising a compression ...

Mapping ablation catheter

A mapping ablation catheter is provided comprising: a catheter conduit having a hollow inner space in which a guide member is disposed; a monitoring electrode unit arranged to surround the outer circumferential surface of the distal portion of the catheter conduit and perform a mapping on the lesion region by being in side-contact with a cardiac organ; an ablation electrode unit arranged to be spaced apart from the monitoring electrode unit and surround the outer circumferential surface of the distal portion of the catheter conduit and which removes the lesion region; a plurality of liquid discharge holes arranged on the outer circumferential surface of the ablation electrode; a current application unit which applies current to the monitoring electrode unit and the ablation electrode unit; and a liquid supply unit having a liquid supply tube, one end of the liquid-supply tube connected to the liquid discharge holes in the catheter conduit.

Medical device and treatment method

A medical device and a treatment method, in which energy is accurately applied to a target site by suppressing a positional displacement between an expansion body and a biological tissue. The medical device includes an elongated shaft portion and an expansion body disposed in a distal portion of the shaft portion and configured to expand and contract in a radial direction. The expansion body includes a holding portion having a proximal side holding portion and a distal side holding portion configured to hold the biological tissue, and a movable portion configured to open and close the holding portion.

SYSTEMS AND METHODS FOR TREATING TISSUE WITH RADIOFREQUENCY ENERGY

A device for applying radiofrequency energy for sphincter treatment comprising a flexible outer tube, an expandable basket having a plurality of arms movable from a collapsed position to an expanded position, and a plurality of electrodes movable with respect to the arms from a retracted position to an extended position. An advancer is slidably disposed within the outer tube to move the plurality of electrodes to the extended position. An actuator moves the advancer from a first position to a second position to advance the plurality of electrodes. An aspiration tube extends within the outer tube. An assembly includes an aspiration disabler having a first position to enable aspiration from a distal portion of the aspiration tube to a proximal portion and a second position to disable aspiration. 116-. (canceled)17. A method of treating gastrointestinal reflux disease comprising:providing a treatment device having a plurality of electrodes and an assembly having a disabler for disabling aspiration through an aspiration tube extending within the device, the disabler having a first position to enable aspiration from a distal portion of the aspiration tube to a proximal portion of the aspiration tube, the disabler movable to a second position to disable aspiration to facilitate axial and rotational movement of the treatment device within tissue and to limit undesired movement of tissue which can cause overtreatment of tissue and tissue ablation;applying radiofrequency energy to the plurality of electrodes to thermally treat tissue below a tissue ablation threshold and create a plurality of tissue lesions along axially spaced tissue levels within the upper gastrointestinal tract;monitoring tissue temperature throughout the applying of radiofrequency energy; andregulating power ensuring in response to the monitoring of tissue temperature that the tissue temperature does not exceed a predetermined value which would cause tissue ablation and/or tissue necrosis.18. The method ...

Endoscopic vessel harvester with gyrosensor on handle for rotating camera view

An endoscopic vessel harvesting tool uses an optics system to present of a video image to a user. As the tool is manipulated around all sides of the vessel to dissect and cut surrounding tissue and side branches, the orientation of the captured image rotates. A motion tracker (e.g., gyrosensor) in the tool detects the rotation. By detecting a rotational angular velocity of the harvester handle during the harvesting procedure, the camera view orientation is compensated before display to the user. When the handle is rotated, the detected rotation is used to provide an opposite (canceling) rotation of the camera view so that a steady orientation is presented on the display. Thus, a vertically upward direction (or any other desired reference direction) remains substantially fixed in the displayed video images.

Optical Feedback RF Ablator and Ablator Tip

An ablation catheter comprises an elongated catheter body; at least one ablation element disposed in a distal portion which is adjacent the distal end of the catheter body; an illumination optical element disposed in the distal portion, the illumination optical element being light-transmissive to emit light from the illumination optical element to the targeted tissue region; and a collection optical element disposed in the distal portion, the collection optical element being light-transmissive to collect one or more of returned, backscattered or newly excited light from the targeted tissue region. The illumination or excitation optical element and the collection optical element are axially spaced from one another and axially optically isolated from one another within the distal portion to substantially prevent light from traveling between the illumination optical element and the collection optical element along a path within the distal portion.

Devices and methods for selectively deploying catheter instruments

Catheters with deployable instruments (e.g., needles) can damage tissue if the instrument unintentionally deploys during use. Described herein are devices and methods for controlling the position of a deployable catheter instrument. In one embodiment, a catheter can include an instrument slidably disposed within an inner lumen of the catheter and coupled to at least one protrusion, as well as a retraction stop coupled to the catheter. The catheter can further include a biasing element coupled to the instrument that can urge the instrument proximally such that the at least one protrusion abuts against the retraction stop, as well as an advancing mechanism to selectively engage the instrument and urge it distally. In some embodiments, the biasing element can be omitted and a deployment stop can be included distal to the retraction stop. These configurations can prevent unintentional instrument deployment and provide greater positioning precision during instrument deployment.

Cold plasma electrosurgical apparatus with bent tip applicator

Electrosurgical apparatuses having bent tip applicators are provided. In one implementation, an electrosurgical apparatus includes an insulating outer tube having a longitudinal axis, a proximal end, and a distal end. An outer tube distal housing has its proximal end coupled to the distal end of the insulating outer tube. A distal end of the outer tube distal housing extends from the insulating outer tube at an acute angle relative to the longitudinal axis. The exemplary electrosurgical apparatus further includes an electrically conducting tube disposed within the insulating outer tube and moveable along the longitudinal axis of the insulating outer tube. An electrode is coupled to a distal end of the electrically conducting tube. The exemplary electrosurgical apparatus may include a knob coupled to the insulating outer tube to effect rotation of the outer tube distal housing in 360 degrees of rotation.

ELECTROSURGICAL APPARATUS WITH RETRACTABLE BLADE

An electrosurgical apparatus with a retractable blade for use in cold plasma applications, electrosurgical cutting and mechanical cutting is provided. The electrosurgical apparatus employs a tip of the retractable blade as a sharp conductive point to generate a plasma beam or discharge. When the blade is retracted within the electrosurgical apparatus, it is electrically energized while an inert gas flows over it, producing a cold plasma discharge. In the de-energized state, the blade is advanced and used as a traditional, mechanical surgical blade. 110-. (canceled)11. An electrosurgical apparatus comprising:a housing having a passage extending therethrough, the housing having a proximal end and a distal end;an electrically conducting tube having a proximal end and a distal end, the electrically conducting tube being disposed in the passage of the housing;an insulating outer tube having a proximal end and a distal end, the outer tube disposed around the electrically conducting tube with the proximal end of the outer tube coupled to the distal end of the housing, the electrically conducting tube being movable along a longitudinal axis of the housing and outer tube; andan electrically conducting blade coupled to the distal end of the electrically conducting tube, wherein in a first position of the electrically conducting tube, the electrically conducting blade extends beyond the distal end of the outer tube for mechanical cutting and, in a second position of the electrically conducting tube, the electrically conducting blade is retracted within the outer tube and is energized via the electrically conducting tube to form plasma when an inert gas flows through the electrically conducting tube,wherein the electrically conducting tube and the insulating outer tube are configured to articulate at their respective distal ends.12. An electrosurgical apparatus of claim 11 , wherein the electrically conducting tube is configured from a conductive mesh.13. The electrosurgical ...

METHOD AND SYSTEM OF CONTROLLING CONDUCTIVE FLUID FLOW DURING AN ELECTROSURGICAL PROCEDURE

Controlling conductive fluid flow during an electrosurgical procedure. At least some of the example embodiments are methods including: flowing conductive fluid from a source lumen to a suction lumen of an electrosurgical wand, the flowing with the electrosurgical wand in a first orientation; sensing a change in orientation of the electrosurgical wand to a second orientation different than the first orientation; and changing a control parameter associated with the conductive fluid flow, the changing responsive to the change in orientation of the electrosurgical wand. 1. A system comprising:an electrosurgical controller, the electrosurgical controller configured to produce radio frequency (RF) energy at an active terminal with respect to return terminal; an orientation sensor, readings from the orientation sensor indicative of orientation a first portion of the wand relative to a second portion of the wand, different than the first portion;', 'an active electrode defined on a distal end of the electrosurgical wand;', 'a lumen in operational relationship to the active electrode, the lumen coupled to tubing, the tubing and lumen configured to flow a fluid therethrough; and, 'an electrosurgical wand coupled to the electrosurgical controller, the electrosurgical wand havinga flow control device coupled to the tubing, the flow control device operatively coupled to the orientation sensor; wherein the system is configured to sense a change of orientation of the wand, and responsive to the change of orientation change a control parameter of the system.2. The system of wherein the orientation sensor is at least one selected from the group consisting of: an inclinometer; a gyroscope; a three-axis gyroscope; a six-axis gyroscope.3. The system of wherein the flow control device is a pump operatively coupled with the tubing.4. The system of further comprising:wherein the orientation sensor is communicatively coupled to the electrosurgical controller;wherein the flow control device ...

SYSTEMS AND METHODS FOR TREATING TISSUE WITH RADIOFREQUENCY ENERGY

A flexible sleeve mountable to an endoscope having a proximal portion, a distal portion, a first channel dimensioned to receive an endoscope, and a second channel dimensioned to receive an electrode. The electrode is slidable within the second channel from a retracted position wherein a tip of the electrode is unexposed from the sleeve and an extended position wherein the tip of the electrode is exposed from the sleeve and curves toward target tissue. 1. A flexible sleeve mountable to an endoscope , the sleeve comprising a proximal portion , a distal portion , a first channel dimensioned to receive an endoscope , and a second channel dimensioned to receive an electrode , the electrode slidable within the second channel from a retracted position wherein a tip of the electrode is unexposed from the sleeve and an extended position wherein the tip of the electrode is exposed from the sleeve and curves toward target tissue.2. The flexible sleeve of claim 1 , wherein the tip of the electrode is a penetrating tip to penetrating the target tissue.3. The flexible sleeve of claim 1 , wherein the flexible sleeve includes a third channel and a second electrode slidable within the third channel from a retracted position wherein a tip of the second electrode is unexposed from the sleeve and an extended position wherein the tip of the second electrode is exposed from the sleeve and curves toward target tissue.4. The flexible sleeve of claim 1 , further comprising an actuator operatively connected to the electrode for moving the electrode between retracted and exposed positions.5. The flexible sleeve of claim 2 , further comprising a stop positioned on the electrode to control a depth of penetration of the electrode to provide a consistent depth of penetration at the lesion levels.6. The flexible sleeve of claim 1 , further comprising an aspiration lumen for aspiration of particles.7. The flexible sleeve of claim 1 , wherein the second channel is on an exterior surface of the ...

APPARATUS FOR EFFECTIVE ABLATION AND NERVE SENSING ASSOCIATED WITH DENERVATION

An intravascular catheter for nerve activity ablation and/or sensing includes one or more needles advanced through supported guide tubes (needle guiding elements) which expand to contact the interior surface of the wall of the renal artery or other vessel of a human body allowing the needles to be advanced though the vessel wall into the extra-luminal tissue including the media, adventitia and periadvential space. The catheter also includes structures which provide radial and lateral support to the guide tubes so that the guide tubes open uniformly and maintain their position against the interior surface of the vessel wall as the sharpened needles are advanced to penetrate into the vessel wall. Electrodes near the distal ends of the needles allow sensing of nerve activity before and after attempted renal denervation. In a combination embodiment ablative energy or fluid is delivered from the needles in or near the adventitia to ablate nerves outside of the media while sparing nerves within the media. 1. A catheter for sensing the activity from nerves outside of the lumen of a target vessel of a human body comprising:a catheter body having a distal end for insertion into a patient, a proximal end for controlling the movement of at least one needle, and a central axis extending in a longitudinal direction;a connector configured to connect to external electronic equipment outside of a proximal end of the catheter, said equipment having a sensing subsystem configured for sensing local nerve activity within a patient, and configured to be connected to at least one additional electrode in electrical contact with the patient;at least one needle guiding element adapted to expand outwardly from the catheter body toward the interior wall of the target vessel;at least one needle, the needle having at least one distal electrode, the needle adapted to be advanced outwardly, guided by the at least one needle guiding element to penetrate and advance through the interior wall of the ...

METHOD FOR PAINLESS RENAL DENERVATION USING A PERI-VASCULAR TISSUE ABLATION CATHETER WITH SUPPORT STRUCTURES

An intravascular catheter for peri-vascular and/or peri-urethral tissue ablation includes multiple needles advanced through supported guide tubes which expand around a central axis to engage the interior surface of the wall of the renal artery or other vessel of a human body allowing the injection an ablative fluid for ablating tissue, and/or nerve fibers in the outer layer or deep to the outer layer of the vessel, or in prostatic tissue. The system may also include a means to limit and/or adjust the depth of penetration of the ablative fluid into and beyond the tissue of the vessel wall. The catheter may also include structures which provide radial and/or lateral support to the guide tubes so that the guide tubes expand uniformly and maintain their position against the interior surface of the vessel wall as the sharpened injection needles are advanced to penetrate into the vessel wall. A method can involve injection/infusion of the ablative fluid over an extended time period of at least 10 seconds or with two injections at two different penetration depths to reduce or eliminate patient pain during ablation. 122-. (canceled)23. A transvascular method of minimizing pain during the treatment of extravascular tissue , comprising:providing a catheter having an elongate flexible body, a proximal end, a distal end, and a needle disposed within a lumen of a guide tube;transvascularly positioning the distal end of the catheter at a treatment site;deploying the needle into the vessel wall at a depth of more than 0.5 mm from an inside surface of the vessel wall while maintaining the guide tube against the vessel wall;desensitizing pain nerves by injecting an anesthetic agent through the needle; andablating sympathetic nerves by injecting an ablative agent through the needle.24. The transvascular method of claim 23 , further comprising deploying at least three needles into the vessel wall.25. The transvascular method of claim 24 , wherein the depth is between 0.5 mm and 4 mm. ...

Bounded electrosurgical energy systems and methods employing zone-based energy

A method of treating tissue is provided herein. The method comprises positioning an end effector in a first position in proximity to tissue, wherein the end effector has one or more first thermal elements and one or more second thermal elements and an energy delivery configuration, activating the one or more first thermal elements, absorbing energy from tissue via the one or more first thermal elements, wherein the energy absorbed is in a first predetermined volume based on the energy delivery configuration, activating the one or more second thermal elements, delivering energy to tissue via the one or more second thermal elements, wherein the energy delivered is in a second predetermined volume based on the energy delivery configuration, and generating a predetermined treatment zone based on the first predetermined volume and the second predetermined volume.

Electrically based medical treatment device and method

Embodiments of medical treatment including skin treatment using electrical energy, especially with the primary purpose for skin treatment for aesthetics are described generally herein. Other embodiments may be described and claimed.

MULTIPLE ELECTRODE CONDUCTIVE BALLOON

Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a medical device for modulating nerves. The medical device may include an elongate shaft having a distal region. A balloon may be coupled to the distal region. An electrode may be disposed within the balloon. A virtual electrode may be defined along the balloon. The virtual electrode may include a region having a first non-conductive layer and a second conductive layer. 1. A medical device for modulating nerves , the medical device comprising:an elongate shaft having a distal region;a balloon coupled to the distal region, the balloon having an inner non-conductive layer and an outer conductive layer;an electrode disposed within the balloon; anda virtual electrode defined along the balloon, the virtual electrode including a conductive region.2. The medical device of claim 1 , wherein the conductive region is defined along a section of the balloon that is free of the inner non-conductive layer.3. The medical device of claim 1 , wherein the conductive region is defined by one or more through holes formed in the inner non-conductive layer.4. The medical device of claim 1 , wherein the outer conductive layer covers the entire balloon.5. The medical device of claim 1 , wherein the outer conductive layer covers only a portion of the balloon.6. The medical device of claim 1 , wherein the electrode includes a coil electrode helically disposed about the shaft.7. The medical device of claim 1 , wherein the balloon includes a single virtual electrode.8. The medical device of claim 1 , further comprising one or more additional virtual electrodes.9. The medical device of claim 1 , further comprising a conductive fluid disposed within the balloon.10. A medical device for modulating nerves claim 1 , the medical device comprising:an elongate shaft having a distal region and a fluid inlet and a fluid outlet proximate the distal region;a balloon coupled to the distal ...

Multi-mode electrosurgical apparatus

A multi-mode electrosurgical apparatus for use in cold plasma applications, electrosurgical cutting, electrosurgical coagulation and mechanical cutting is provided. The electrosurgical apparatus includes a housing having a passage extending therethrough, an electrically conducting tube being disposed in the passage of the housing; an insulating outer tube disposed around the electrically conducting tube coupled to the housing, the electrically conducting tube being movable along a longitudinal axis of the housing and outer tube; an electrically conducting blade coupled to the distal end of the electrically conducting tube, and a transformer assembly disposed on a proximal end of the housing, the transformer assembly including a first transformer and a first switch for selectively coupling the first transformer and an external second transformer to the electrically conducting tube for providing electrosurgical energy thereto.

PLASMA TREATMENT SYSTEM

In a plasma treatment system, a coefficient K which is a ratio of a supply amount and a suction amount of saline and also a minimal water amount required for generation of plasma is provided, and the required supply amount and suction amount of the saline are set from the coefficient K acquired on the basis of an output level of high-frequency energy, thereby performing a plasma treatment. 1. A plasma treatment system comprising:a treatment section which comprises a first electrode and a second electrode which forms a pair with the first electrode, and generates plasma, in a conductive liquid solution in which the first electrode and the second electrode are immersed, by using high-frequency energy supplied between the first electrode and the second electrode to give a treatment to a body tissue;a setting section which sets a predetermined ratio of a supply amount from a supplying section to supply the conductive liquid solution and a suction amount from the sucking section to suck the conductive liquid solution so that a water amount of an irrigation layer formed between the first electrode, the second electrode and a treatment target surface layer of the body tissue is a necessary minimum water amount to generate the plasma, the second electrode, and a treatment target surface layer of the body tissue;a detecting section which detects the supply amount of the conductive liquid solution supplied from the supplying section, and the suction amount of the conductive liquid solution sucked into the sucking section; anda control section which controls the supply amount and the suction amount to the ratio set by the setting section on the basis of the supply amount and the suction amount detected by the detecting section.2. The system according to claim 1 ,wherein a water amount necessary to form an irrigation layer on a tip of the treatment section is an amount determined by a product of a distance from a tip portion of a probe of the treatment section on which the ...

CATHETER SYSTEM AND METHODS OF MEDICAL USES OF SAME, INCLUDING DIAGNOSTIC AND TREATMENT USES FOR THE HEART

The present invention includes systems, devices and methods for treating and/or diagnosing a heart arrhythmia, such as atrial fibrillation. Specifically, the present invention provides a system including a diagnostic catheter and an ablation catheter. The diagnostic catheter includes a shaft, multiple dipole mapping electrodes and multiple ultrasound transducers. The ablation catheter is slidingly received by the diagnostic catheter shaft. 1. (canceled)2. A catheter system , comprising: an elongate shaft comprising a distal end;', 'an expandable assembly mounted to the elongate shaft, the expandable assembly comprising multiple splines and configured to transition from a compacted state to an expanded state;', 'a plurality of electrodes coupled to the multiple splines of the expandable assembly, each electrode configured to emit electric signals and record electric signals; and', 'a plurality of ultrasound transducers coupled to the multiple splines of the expandable assembly;, 'a diagnostic catheter comprisinga distance measurement assembly configured to drive the plurality of ultrasound transducers to produce anatomical geometry data, and including data representing a distance between each ultrasound transducer of the plurality of ultrasound transducers and a tissue surface orthogonal to each ultrasound transducer; and measure spacing between two or more of the electrodes based on the recorded electric signals and to determine a geometric configuration of one or more of the multiple splines based on the measured electrode spacing; and', 'create a three-dimensional anatomical map based on the produced anatomical geometry data, create electrical information based on the recorded electric signals, and display the electrical information in relation to the three-dimensional anatomical map,', the electrical information is further based on the determined geometric configuration of the one or more of the multiple splines, and/or', 'the anatomical geometry data is based on ...

PERI-VASCULAR TISSUE ACCESS CATHETER WITH LOCKING HANDLE

An intravascular catheter for peri-vascular and/or peri-urethral tissue ablation includes multiple penetrators advanced through supported guide tubes which expand around a central axis to engage the interior surface of the wall of the renal artery or other vessel of a human body allowing the injection an ablative fluid for ablating tissue, nerve sensing, nerve stimulation, or ablation by application of energy. The catheter can include a proximal handle for the advancement of guide tubes and penetrators. 1. A catheter comprising:a catheter body having a central axis extending in a longitudinal direction, a distal portion including at least one guide tube having a distal end, at least one guide tube movable between a first position within the catheter body and a second position inclined away from the catheter body, wherein the at least one guide tube is configured to be positioned with the distal end in proximity to an inside wall of a target vessel;at least one penetrator configured to penetrate the inside wall of the target vessel, a portion of the at least one penetrator located coaxially inside of the at least one guide tube, anda proximal handle adapted to advance and retract the at least one guide tube and the at least one penetrator, the proximal handle comprising an unlock mechanism having a locked state and an unlocked state, the proximal handle also having a movement mechanism configured to allow the relative longitudinal movement of the at least one guide tube with respect to the catheter body and the at least one penetrator with respect to the at least one guide tube, the movement subject to the unlock mechanism being in the unlocked state.2. The catheter of claim 1 , including three guide tubes and three penetrators.3. The catheter of claim 1 , where the at least one penetrator is hollow and includes fluid egress near the distal end of the at least one penetrator claim 1 , and where the catheter includes an injection lumen in fluid communication with the ...

Unitary Endoscopic Vessel Harvesting Devices

Unitary endoscopic vessel harvesting devices are disclosed. In some embodiments, such devices may comprise an elongated body having a proximal end and a distal end. A conical tip may be disposed at the distal end of the elongated body. In addition, the surgical instrument may include one or more surgical instruments moveable in a longitudinal direction along an axis substantially parallel to a central longitudinal axis of the cannula from a retracted position proximally of a distal end of the tip to an advanced position toward the distal end of the tip to seal and cut a blood vessel. 1. A method for harvesting a blood vessel comprising:advancing a cannula having a conical dissection tip disposed at a distal tip of an elongated body along a main vessel to separate the main vessel and its branch vessels from the surrounding tissue;moving one or more surgical instruments in a longitudinal direction along an axis substantially parallel to a central longitudinal axis of the cannula from a retracted position proximal of a distal end of the tip to an advanced position toward the distal end of the tip;manipulating the one or more surgical instruments to seal and cut the branch vessel.2. The method of claim 1 , wherein claim 1 , in the step of advancing claim 1 , the tip is removable to expose the distal end of the elongated body.3. The method of claim 1 , wherein claim 1 , in the step of advancing claim 1 , the tip is retractable over the elongated body to expose the distal end of the elongated body.4. The method of claim 1 , wherein claim 1 , in the step of advancing claim 1 , the tip includes one or more optical windows.5. The method of claim 4 , wherein the cannula further comprises a cover moveable from a first position over the one or more optical windows to cover the one or more optical windows to a second position away from the one or more optical windows to expose the one or more optical windows.6. The method of claim 1 , wherein claim 1 , in the step of moving ...

MUCOSA DISSECTOR

A mucosa dissector comprises an outer sleeve assembly, an electric loop (), a sliding ring () and a pulling cable (). At a portion of the electric loop () is provided an insulating layer (), and the rest of the electric loop is exposed so as to dissect the mucosa. The sliding ring () is provided on the outer sleeve assembly, and is movable axially relative to the outer sleeve assembly; an electrode plug () is provided on the sliding ring (). The pulling cable () is movable axially to be inserted into the outer sleeve assembly. One end of the pulling cable () is connected with the electrical loop (), and the other end is electrically connected with the electrode plug () on the sliding ring (). The mucosa dissector can contact the tissue easily and be positioned accurately when used to dissect the submucosa tissue, which facilitates the operation, and avoids the phenomenon of burning out the healthy tissues. 1. A mucosa dissector , wherein , it comprises:an outer sleeve assembly;{'b': 2', '1, 'an electrical loop (), a portion of which is provided with an insulating layer () and the rest of which is in an exposed status so as to dissect the mucosa;'}{'b': 8', '8', '7', '8, 'a sliding ring (), which is provided on the outer sleeve assembly, the sliding ring () is movable axially relative to the outer sleeve assembly, and an electrode plug () is provided on the sliding ring (); and'}{'b': 4', '4', '2', '4', '7', '8, 'a pulling cable (), which is movable axially to be inserted into the outer sleeve assembly, one end of the pulling cable () is connected with the electric loop (), and the other end of the pulling cable () is electrically connected with the electrode plug () on the sliding ring ().'}2356935596. The mucosa dissector of claim 1 , wherein the outer sleeve assembly comprises a tube sheath () claim 1 , a protective sleeve () claim 1 , a rotating cap () and a core rod () claim 1 , and the tube sheath () is connected with one end of the protective sleeve () claim 1 ...

Radio-frequency electrical membrane breakdown for the treatment of adipose tissue and removal of unwanted body fat

An imaging, guidance, planning and treatment system integrated into a single unit or assembly of components, and a method for using same, that can be safely and effectively deployed to treat and ablate unwanted masses of adipose tissue in all medical settings, including in a physician's office or in an outpatient setting. The system utilizes the novel process of Radio-Frequency Electrical Membrane Breakdown (‘EMB’* or “RFEMB”) to destroy the cellular membranes of unwanted adipose tissue without damaging sensitive anatomical structures in the treatment, area. The system preferably comprises at least one EM B treatment probe 20, at least one ultrasound scanner, at least one trackable anesthesia needle 300, and at least one controller unit for at least partially automating the treatment process.

Catheter system

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.

Electrosurgical system with suction control apparatus, system and method

System and method for selectively applying electrical energy to structures within or on the surface of a patient's body and controlling the flow of an electrically conductive fluid from the application site to provide or maintain a desired operating condition of the electrosurgical device. An electrosurgical probe is in communication with a fluid transport apparatus through a fluid transport lumen having an opening at an end proximate the application site and disposed proximate the electrosurgical probe. A controller in communication with the fluid transport apparatus provides control signals to the fluid transport apparatus in response to at least one operating parameter associated with the system. Based on the received control signals, the fluid transport apparatus adjusts a flow rate of the electrically conductive fluid at the application site through the fluid transport lumen in response to at least one operating parameter associated with the system.

Tissue Ablation Cannula Assembly

An assembly for radiofrequency ablation of tissue. A cannula includes a cannula hub and a cannula body including a cannula bend, a lumen, and side opening within an outer side of the cannula bend. An electrode includes an electrode hub and an electrode body dimensioned to be inserted within the lumen of the cannula body in at least first and second rotational orientations as indicated by registration of respective indicia on the cannula and electrode hubs. A distal section of the electrode body extends past the side opening of the cannula body in the first rotational orientation, and the distal section extends through the side opening in the second rotational orientation. The indicia of the cannula hub and the electrode hub may be indicative of the orientation of the cannula bend and an electrode bend, respectively. Methods of performing radiofrequency ablation of the tissue with the assembly are also disclosed. 1. An assembly for radiofrequency ablation of tissue , said assembly comprising: a cannula hub comprising indicia;', 'a cannula body comprising a cannula proximal section including a cannula proximal end coupled to said cannula hub, a cannula distal section including a cannula distal end opposite said cannula proximal end with said cannula distal section comprising electrically conductive material for ablating the tissue, a cannula bend between said cannula proximal and distal sections, a lumen extending between said cannula proximal and distal ends, and a side opening within an outer side of said cannula bend and opening into said lumen;, 'a cannula comprising an electrode hub comprising a first indicia and a second indicia; and', 'an electrode body coupled to said electrode hub and dimensioned to be inserted within said lumen of said cannula body in at least a first rotational orientation and a second rotational orientation relative to said cannula body such that, when said electrode body is inserted within said cannula body in said first rotational ...

VACUUM POWERED SALINE INJECTION SYSTEM

A method and apparatus for injecting saline into an open cavity of a patient's body, and, alternatively, vacuuming fluids from said cavity during laparoscopic surgery that provides constant feed and amplified pressure to provide a steady fluid output, in a disposable, single use handheld surgical device. 1a pump portion; anda wand portion connected in fluidic communication with the pump portion; a vacuum powered pump motor connectable to a vacuum source;', 'a first generally cylindrical chamber having a fluidic inlet chamber portion and a fluid storage portion, the first generally cylindrical chamber having a first major axis extending therethrough and being connected to the vacuum powered pump motor;', 'a first spring-biased disk positioned in the first generally cylindrical chamber and oriented perpendicularly with respect to the first major axis; and', 'a fluid outlet connected in fluidic communication with the first generally cylindrical chamber;', 'a spring-biased valve operationally connected to the vacuum powered pump motor;', 'a second generally cylindrical chamber having a second major axis extending therethrough, the second major axis being spaced from the first major axis;', 'a second spring-biased disk positioned in the second generally cylindrical chamber and oriented perpendicularly with the second major axis and operationally connected to the spring-biased valve;, 'wherein the pump portion comprises an elongated cannula;', 'a first fluid inlet port;', 'a first length of flexible tubing operationally connected to the first fluid inlet port and operationally connected to the fluid outlet;', 'a second fluid inlet port;', 'a second length of flexible tubing operationally connected to the second fluid inlet port and operationally connectable to the vacuum source;', 'a pivotable valve connected in fluidic communication with the first fluid inlet port, the second fluid inlet port, and the elongated cannula;, 'wherein the wand portion further compriseswherein ...

SYSTEM AND METHOD FOR A PHYSIOCHEMICAL SCALPEL TO ELIMINATE BIOLOGIC TISSUE OVER-RESECTION AND INDUCE TISSUE HEALING

Removal of damaged tissue itself can enable biosynthetic activity in vivo as an unburdened homeostatic or repair response. By removing a biologic and mechanical irritant, the lesion site can be altered to a more favorable perturbation-specific mechanotransductive environment supportive of differentiated gene expression. One aspect of one embodiment of the present invention provides an engineered irrigant that produces ion exchanges in tissues for example deliver of protons which interact with biology tissues. 1. A method for treating targeted tissue comprising:localizing an alternating current circuit device tip having electrodes in a conductive solution containing electroactive species in which a targeted tissue of a host is found;deploying current to the alternating current circuit device tip located in close proximity to the targeted tissue wherein the device tip inhibits electrode-to-tissue contact but permits a shielded reaction zone for the conductive solution to react with at least one electrode of the alternating current circuit device tip;moving an electron between electrodes of the alternating current circuit device tip utilizing an electron donor and acceptor carrier within the conductive solution containing electroactive species;producing an electromagnetic field quanta near the targeted tissue when the device tip is placed next to the targeted tissue and producing an electron donor and an electron acceptor carrier associated with a charged specie intermediary created in the conductive solution formed above a baseline dissociation rate;moving the charged specie intermediary created in the conductive solution toward the targeted tissue surface; andinducing an effect upon the targeted tissue or the conductive solution that is configured to treat the targeted tissue.2. The method of wherein the effect is produced by inducing gene expression with energy that is not injury inducing to the targeted tissue.3. The method of wherein the effect is produced by ...

Multipurpose electrosurgical device

An electrosurgical device and methods of use thereof. In an embodiment, the device comprises a multipurpose electrosurgical device comprising a handle, a shaft distal to the handle, a first, retractable electrode and a second non-retractable electrode, the electrodes adjacent a distal end of the shaft. The device may be selectively configured for use in a bipolar and a monopolar mode and may provide for selective extension and retraction of the retractable electrode. The retractable electrode may be selectively extended and retracted into a cavity within the shaft. When the retractable electrode is in a retracted position, the device may be configured for use in a monopolar mode. When the retractable electrode is in an extended or fully extended position, the device may be configured for use in a bipolar mode.

ABLATION CATHETER

An ablation catheter including a handle, a tubular irrigation member defining a fluid lumen and having a plurality of perforations proximal the distal end of the tubular irrigation member. At least one ablation electrode is arranged at the distal end of an elongate tubular sheath inserted into the lumen of the tubular irrigation member, the elongate tubular sheath being axially displaceable within the lumen of the tubular irrigation member. The ablation catheter may also include two ablation electrodes each attached to an elongate tubuar sheath which are telescopically arranged within the tubular irrigation member. The ablation electrodes may be displaceable simultaneously together or individually. 1. An ablation catheter which includes:a tubular irrigation member of a non-conductive material having a proximal end and a distal end, the tubular member defining a fluid lumen and having one or more perforations at or proximal the distal end of the tubular member;an elongate tubular sheath having a lumen extending from a proximal end of the tubular sheath to a distal end of the tubular sheath, and one or more ablation electrodes arranged at, or adjacent, the distal end, the elongate tubular member being removably received into the fluid lumen of the irrigation member and the proximal end of the elongate tubular sheath connected to a control handle, wherein the elongate tubular sheath is axially displaceable within the fluid lumen of the irrigation member.2. The catheter according to in which the tubular irrigation member includes an inlet for receiving pressurized fluid into the fluid lumen of the irrigation member to be energized by the one or more ablation electrodes before being expelled through the one or more perforations of the irrigation member.3. The catheter according to which includes a second elongate tubular sheath having one or more ablation electrodes arranged at claim 1 , or adjacent claim 1 , its distal end claim 1 , the second elongate tubular sheath ...

CATHETER WITH DISTAL SECTION HAVING SIDE-BY-SIDE LOOPS

The catheter allows mapping and/or ablation of the area around two or more PV ostia at the same time, with a single placement of a distal section of the catheter having a 2D configuration resembling an infinity or lazy 8 symbol. The catheter has an elongated catheter body, a distal section having at least a flexible elongated member with shape memory, the member being configured to assume a 2D configuration resembling an infinity symbol, and at least one electrode mounted on the member. The 2D configuration resembles a first loop and a second loop, wherein the first and second loops are side-by-side, generally extending in a common plane. 1. A method of simultaneously mapping or ablating at least two tubular regions , the method comprising: an elongated catheter body;', 'a distal section having at least a first flexible elongated member with shape memory, the first member being configured to assume a 2D configuration resembling an infinity symbol and having first and second portions;', 'at least one first electrode mounted on the first portion of the 2D configuration; and', 'at least one second electrode mounted on the second portion of the 2D configuration;, 'introducing a catheter comprisingcontacting tissue around a first tubular region with a first portion of the 2D configuration, and contacting tissue around a second tubular region with a second portion of the 2D configuration; andsimultaneously ablating or mapping the tissue around the first and second tubular regions with the at least one first electrode and the at least one second electrode.2. The method of claim 1 , wherein the first portion of the 2D configuration resembles a first loop and the second portion of the 2D configuration resembles a second loop claim 1 , wherein the first and second loops are side-by-side claim 1 , generally extending in a common plane.3. The method of claim 1 , wherein the first member has a distal S configuration and a proximal S configuration claim 1 , wherein the S ...

Instrument For Therapeutically Cytotoxically Ablating Parathyroidal Tissue Within A Parathyroid Gland

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 ...

SELECTIVE LUNG TISSUE ABLATION

Medical methods and systems are provided for effecting lung volume reduction by selectively ablating segments of lung tissue. 1. A treatment system for ablating a targeted treatment site in a lung of a patient , comprising:a shaft having a proximal end and a distal end; andan energy emitting element disposed near the distal end of the shaft, wherein the energy-emitting element comprises an elongate member which will extend through the target site in the lung and an expansion element configured to enable the energy-emitting element to be expanded to conform to a shape of the airway of the treatment site;wherein the system is configured to protect adjacent regions in the lung or surrounding tissue from thermal damage by controlling pressure or temperature at the treatment site and at one or more untreated regions adjacent the treatment site.2. A treatment system as in claim 1 , wherein the energy emitting element comprises an elongate coil shaped electrode.3. A treatment system as in claim 1 , wherein the energy emitting element comprises an elongate braided wire electrode.4. A treatment system as in claim 1 , wherein the expansion element comprises an inflatable balloon.5. A treatment system as in claim 1 , wherein the expansion element comprises a constraint which can be released to allow the expansion element to self-expand.6. A treatment system as in claim 1 , wherein the energy emitting element comprises an electrically resistive coil or a hot fluid element.7. A treatment system as in claim 1 , wherein the system is configured to deliver cooling media to the one or more untreated regions adjacent the treatment site8. A method for selectively ablating a treatment site in a lung comprising:advancing a treatment apparatus through an airway toward the treatment site in the lung;exchanging energy through the treatment apparatus to heat or cool the treatment site to a level to collapse at least a portion the treatment site; andprotecting adjacent regions in the lung or ...

METHODS AND SYSTEMS FOR CONTROLLED DEPLOYMENT OF NEEDLE STRUCTURES IN TISSUE

A system for deploying needles in tissue includes a controller and a visual display. A treatment probe has both a needle and tines deployable from the needle which may be advanced into the tissue. The treatment probe also has adjustable stops which control the deployed positions of both the needle and the tines. The adjustable stops are coupled to the controller so that the virtual treatment and safety boundaries resulting from the treatment can be presented on the visual display prior to actual deployment of the system. 127.-. (canceled)28. An imaging and therapeutic delivery system comprising:an imaging component comprising an imaging shaft having a proximal end and a distal end and an imaging transducer at the distal end of the shaft,wherein a side of the imaging component is configured to laterally and removably attach to an opposing side of a therapeutic component such that the imaging shaft of the imaging component and a therapeutic component shaft of the therapeutic component lie side-by-side with their respective axes in parallel.29. The imaging and therapeutic delivery system of claim 28 , wherein the therapeutic component is configured to deliver energy to treat target tissue.30. The imaging and therapeutic delivery system of claim 28 , wherein the imaging transducer is pivotally attached to the distal end of the imaging shaft.31. The imaging and therapeutic delivery system of claim 28 , wherein the imaging component comprises an imaging handle section coupled to the proximal end of the imaging shaft.32. The imaging and therapeutic delivery system of claim 31 , wherein the imaging handle section comprises imaging circuitry coupled to the imaging transducer and the imaging circuitry is configured to couple to an external imaging display.33. The imaging and therapeutic delivery system of claim 28 , wherein the imaging transducer comprises an ultrasound array.34. The imaging and therapeutic delivery system of claim 28 , wherein the imaging component comprises ...

ELECTROSURGICAL (RF) MEDICAL INSTRUMENTS FOR CUTTING AND COAGULATING TISSUE

An electrosurgical device is disclosed. The electrosurgical device includes a handle, a shaft extending distally from the handle, and an end effector coupled to a distal end of the shaft. The end effector comprises a first electrode and a second electrode. The second electrode includes a first position and a second position. The second electrode is configured to move from the first position to the second position when a force is applied to the end effector by a tissue section. The first electrode and the second electrode define a treatment area when the second electrode is in the second position. 1. An electrosurgical instrument comprising:a pencil-grip handle;a shaft coupled to the pencil grip handle; and a body;', 'a source electrode; and', 'one or more return electrodes,, 'an end effector coupled to the shaft, wherein the end effector compriseswherein the source electrode and the one or more return electrodes are configured to provide an electrosurgical signal to a tissue.2. The electrosurgical instrument of claim 1 , wherein the electrosurgical signal comprises a radio frequency (RF) signal.3. The electrosurgical instrument of claim 1 , wherein the pencil-grip handle comprises a power source and is cordless.4. The electrosurgical instrument of claim 1 , wherein the source electrode is disposed on a center portion of the body and the one or more return electrodes are disposed on a lateral portion of the body.5. The electrosurgical instrument of claim 1 , wherein the body defines an oval shape.6. The electrosurgical instrument of claim 1 , wherein the one or more return electrodes each comprise a first return electrode and a second return electrode.7. The electrosurgical instrument of claim 6 , further comprising an electrosurgical generator coupled to the end effector claim 6 , wherein the electrosurgical generator is configured to produce the electrosurgical signal comprising a first phase claim 6 , a second phase claim 6 , and a third phase claim 6 , wherein ...

SYSTEMS, APPARATUSES, AND METHODS FOR TREATING TISSUE AND CONTROLLING STENOSIS

Systems, delivery devices, and methods to treat to ablate, damage, or otherwise affect tissue. The treatment systems are capable of delivering a coolable ablation assembly that ablates targeted tissue without damaging non-targeted tissue. The coolable ablation assembly damages nerve tissue to temporarily or permanently decrease nervous system input. The system, delivery devices, and methods can damage tissue and manage scarring and stenosis. 1. An energy delivery device , comprising:a catheter shaft; a cooling element movable from a collapsed state to an expanded state, and', 'an intercartilaginous energy emitter including a plurality of electrodes circumferentially offset from one another about a longitudinal axis of the ablation assembly, the electrodes being configured to delivery energy to a plurality of target regions of an airway that are spaced apart from one another with respect to a longitudinal axis of the ablation assembly, and wherein the energy emitter and the cooling element are configured to cooperate to form intercartilaginous lesions which are spaced apart from surface tissue of the airway and positioned between cartilaginous rings of the airway., 'and an ablation assembly coupled to the catheter shaft and including'}251-. (canceled) This application is a continuation of application Ser. No. 14/872,212 filed Oct. 1, 2015, which in turn is a continuation of application Ser. No. 13/509,581 filed Aug. 14, 2012, now U.S. Pat. No. 9,149,328 issued Oct. 6, 2015, which is a 371 of PCT/US10/56424 filed Nov. 11, 2010 which claims the benefit of U.S. Provisional Application No. 61/260,349 filed Nov. 11, 2009, each of which is hereby fully incorporated herein by reference.The present invention generally relates to systems, apparatuses, and methods for treating tissue, and more particularly, the invention relates to systems, apparatuses, and methods for eliciting a desired response while controlling stenosis.Pulmonary diseases may cause a wide range of problems ...

Coronary sinus electrophysiology measurements device and methods

An electrode array configured to be inserted at least partially into a blood vessel including: a self-expandable array body; at least two axially spaced-apart electrodes connected to said array body; wherein at least part of said array body expands to an open conformation and pushes at least one selected electrode against a blood vessel inner tissue with a force designed not to damage venous tissue.

SYSTEMS AND METHODS FOR TREATING CANCER AND/OR AUGMENTING ORGAN FUNCTION

Systems, methods and devices for controlled sympathectomy procedures for neuromodulation in the treatment of subjects having neoplastic conditions are disclosed. Systems, methods, and devices for interventionally treating a cancerous tumor and cancer related pain are disclosed. 1. A system , comprising:a microsurgical tool dimensioned for placement adjacent a wall of a lumen in a vicinity of a tumor, the microsurgical tool configured to deliver at least one of energy and a substance to the tumor, to one or more neural structures adjacent the tumor, or to tissue surrounding the tumor;at least one or more sensors mounted to the microsurgical tool and configured to generate output signals representative of at least one of physiological data and electrophysiological data from at least one of the tumor, the one or more neural structures, or a perivasculature of the lumen; anda controller for receiving the output signals from the one or more sensors, the controller configured to control operation of the microsurgical tool based on the output signals generated by the one or more sensors.2. The system of wherein the microsurgical tool is configured to deliver one of thermal energy claim 1 , radio frequency current claim 1 , microwave current claim 1 , ultrasound claim 1 , radiation or cryotherapy.3. The system of wherein the microsurgical tool is configured to deliver a medicament claim 1 , a denervating agent claim 1 , a sympathetic nerve specific denervating agent claim 1 , a parasympathetic nerve specific denervating agent claim 1 , a neuroblocking agent or a highly specific neuroblocking agent.4. The system of wherein the one or more sensors are configured to collect physiological data or electrophysiological data subsequent to delivery of the at least one of the energy and the substance claim 1 , and further wherein the controller is configured to determine if the delivery of the at least one of the energy and the substance affected at least one of a microenvironment ...

Surgical Snare Device

A surgical snare device for use in polypectomy procedures includes a snare loop capable of being deployed with a plurality of precise internal diameters. The device includes a handle with first and second handle assemblies and a collar. The first handle assembly has multiple numerical markings on a side. The second handle assembly is slidable along the first handle assembly to deploy the snare loop from an elongate tubular sheath attached to the distal end of the first handle assembly. When the second handle assembly is slid to a position such that it aligns with one of the numerical markings on the first handle assembly, the snare loop will be deployed with an internal diameter in millimeters that corresponds precisely to the numerical marking. For example, sliding the second handle assembly to a ‘10’ marking will deploy a snare loop having an internal diameter of 10 mm. The collar is positioned just distal to the second handle assembly and is also slidable along the first handle assembly. The collar functions as a depth stop and prevents further distal movement of the second handle assembly.

Integral High Frequency Electrode

A method and apparatus for the application of an electrical signal to neural tissue and other target tissue in the living body.

Apparatus and Methods for Ablation Efficacy

Apparatus and methods for ablation efficacy are described herein where a hood having a deployable elongated feature can extend beyond a distal face of the hood. The elongated feature can channel the energy to the deeper regions within the tissue (such as trabeculated regions or other tissue structures) such that the energy can be delivered to the target tissue despite small or large irregularities in the target tissue surface (or region) and/or changes in the relative distances between the hood and the target tissue.

Automated image-guided tissue resection and treatment

A system to treat a patient comprises a user interface that allows a physician to view an image of tissue to be treated in order to develop a treatment plan to resect tissue with a predefined removal profile. The image may comprise a plurality of images, and the planned treatment is shown on the images. The treatment probe may comprise an anchor, and the image shown on the screen may have a reference image marker shown on the screen corresponding to the anchor. The planned tissue removal profile can be displayed and scaled to the image of the target tissue of an organ such as the prostate, and the physician can adjust the treatment profile based on the scaled images to provide a treatment profile in three dimensions. The images shown on the display may comprise segmented images of the patient with treatment plan overlaid on the images.

Multi-channel rf impedance

Electrosurgical systems and methods. At least one example embodiment is a method including: performing a first electrosurgical activity by way of first energy at a first frequency applied to an active electrode of an electrosurgical wand, the application of the first energy by way of an electrosurgical generator, and the first electrosurgical activity produces a first effect that is tissue-altering; and measuring an electrosurgical parameter by way of a second energy at a second frequency applied to the active electrode, the measuring simultaneously with the performing of the first electrosurgical activity, and the second frequency different than the first frequency.

IRE Ablation Systems and Protocols Using a Basket Catheter

A medical apparatus includes a probe, including an insertion tube configured for insertion into a body cavity of a patient and a basket assembly, which has a proximal end that is connected distally to the insertion tube and includes a plurality of resilient spines, which are configured to bow radially outward around a longitudinal axis of the basket assembly and are conjoined at a distal end of the basket assembly. A plurality of electrodes are configured to contact tissue in the body cavity and include radial electrodes disposed on the spines and an axial electrode disposed on the longitudinal axis of the basket assembly. An electrical signal generator is configured to apply to the electrodes, including the axial electrode, pulses having an amplitude sufficient to cause irreversible electroporation (IRE) in the tissue contacted by the electrodes.

Electroporation for obesity or diabetes treatment

Endolumenal devices and methods can be used for the treatment of health conditions including obesity and diabetes. In some embodiments, the methods and systems provided herein can cause weight loss or control diabetes by reducing the caloric absorption of an individual. For example, this document provides several devices and methods for treating obesity and diabetes by using electroporation to modulate the duodenal mucosa. In addition, this document provides devices and methods for bypassing portions of the gastrointestinal tract to reduce nutritional uptake.

SYSTEM AND METHOD FOR ENDOMETRIAL ABLATION

A wall of a uterus is ablated by expanding a structure in the uterus and applying energy across the wall of the structure into the uterine wall. An exterior surface of the structure conforms to an inner wall of the uterus, and the energy may cause vapor to collect between the wall and the structure. The vapor is released by providing a barrier to release which is inflated at a pressure above which the barrier at least partially collapses to allow the vapor to leave the uterus. 1. An electrosurgical ablation probe comprising:a shaft having a proximal end, a distal end, and a gas flow passage with an opening near a distal end of the shaft;a dielectric wall having an interior surface, an exterior surface, and an interior volume surrounding the distal end of the shaft;a barrier element in the flow passage, said barrier configured to open when a gas pressure in the interior volume falls below a predetermined pressure and close when said gas pressure in the interior volume rises above the predetermined pressure;a first electrode structure disposed within the gas flow passage; anda second electrode structure disposed on an exterior surface of the shaft;said first and second electrodes configured to be connected to a source of a radiofrequency voltage to initiate a plasma in an electrically non-conductive gas flowing through the flow passage into the interior volume of the dielectric wall when tissue establishes a current path between the first and second electrodes;2. An electrosurgical ablation probe as in claim 1 , wherein the barrier element is disposed in a distal end of the gas flow passage.3. An electrosurgical ablation probe as in claim 1 , wherein the barrier element is a balloon structure which is inflatable independently of the expandable structure.4. An electrosurgical ablation probe as in claim 3 , wherein the barrier element comprises a proximal portion of the expandable structure.5. An electrosurgical ablation probe as in claim 3 , further comprising an ...

Mapping catheter with flex panel electrode assembly

An apparatus includes a catheter assembly and an end effector. The catheter assembly includes an outer sheath with a distal end. The end effector is associated with a distal end of the catheter assembly. The end effector includes a panel assembly with microelectrodes for electrophysiological (EP) mapping. The microelectrodes are configured in a matrix within the panel assembly and provide multiple points of contact with the target tissue for EP mapping. The panel assembly can transition between a first contracted state and a second expanded state. The panel assembly can fit within the outer sheath in the first state. The panel assembly can expand outwardly away from a longitudinal axis defined by the catheter assembly in the second state once exposed distally relative to the distal end of the outer sheath.

Anchored RF Ablation Device for The Destruction of Tissue Masses

The inventive ablation element comprises an elongated cannula having a proximal end and a distal end. The cannula defines an internal lumen and a cannula axis. A plurality of conductors contained within the lumen, each having a proximal end proximate the proximal end of the cannula, and a distal end proximate the distal end of the cannula. A plurality of ablation stylets each has a proximal end and a distal end, and each coupled to the distal end of a respective conductor, the conductors together with their respective stylets being mounted for axial movement. A trocar point defined proximate the distal end of the cannula. A deflection surface positioned between the trocar point and the proximal end of the cannula, the deflection surface being configured and positioned to deflect at least some of the stylets laterally with respect to the cannula axis in different directions defining an ablation volume.

Valve treatment devices, systems, and methods

Medical device systems, methods and devices are provided for treating a valve in a heart to minimize valve regurgitation, the medical device system includes an RF energy source, a handle, a treatment catheter, and first and second sleeves. The handle is operatively coupled to the RF energy source and coupled to the treatment catheter. The first and second sleeves each extend through a lumen of the treatment catheter and are moveable between a constricted position and an expanded position. The first sleeve includes a first electrode and the second sleeve includes a second electrode. Further, the first sleeve and the second sleeve are biased away from each other such that, upon being moved to the expanded position, the first and second sleeves splay outward to exhibit a v-configuration.

Single lumen cautery forceps

Multiple surgical devices that may be used during surgical procedures are shown and described herein. A surgical device includes an outer cannula and an inner member that has a pair of electrodes positioned at a distal end. The inner member defines an aspiration delivery channel with an opening. The inner member further defines a pair of electrode channels within which the electrodes are positioned. A handle assembly actuates the outer cannula relative to the inner member, thereby adjusting a size of the opening of the aspiration delivery channel. An irrigation hub is provided to deliver irrigation through the surgical device to the electrode channels.

DEVICE AND METHOD FOR DESTRUCTION OF CANCER CELLS

The present invention provides devices and systems, as well as methods, of electric field delivery and non-thermal or selective ablation of target tissue regions, including selective ablation of cancerous cells and solid tumors. A method of the present invention includes delivering an electric field to a tissue, including positioning an electrode within a target tissue region comprising cancerous cells, and applying an alternating electrical current to the target tissue so as to non-thermally ablate cancerous cells of the target tissue region around the electrodes. 1. A device for selectively destroying cancerous cells , the device comprising:a probe comprising a plurality of electrodes positionable within a target tissue region comprising cancerous cells, the plurality comprising a first electrode and a plurality of secondary electrodes,wherein the secondary electrodes at least partially define a treatment volume, the first electrode positionable within the treatment volume and spaced from the secondary electrodes so as to provide one or more alternating electric fields extending radially from the first electrode and through the treatment volume, and the one or more alternating fields operable for preferentially destroying cancerous cells compared to non-cancerous cells within the treatment volume.2. The device of claim 1 , wherein the alternating electric fields have a frequency between about 50 kHz to about 300 kHz.3. The device of claim 1 , wherein the alternating electric fields have an intensity of less than 50 V/cm.4. The device of claim 1 , wherein the probe comprising a tissue piercing distal portion for percutaneous access to the target tissue.5. The device of claim 1 , further comprising a delivery member having a distal portion with a lumen claim 1 , and the plurality of electrodes positionable within the lumen of the delivery member under a non-deployed state and outside the lumen under a deployed state.6. The device of claim 4 , wherein at least one ...

Surgical instrument and system

An electrosurgical system includes an electrosurgical unit electrically coupled to a surgical retractor. The electrosurgical unit includes an RF output and an RF return. The surgical retractor includes a return pad electrically coupled to the RF return of the electrosurgical unit. The electrosurgical unit includes an RF output configured to be coupled to an electrosurgical device, such as an electrosurgical device configured in a monopolar mode. A controller is configured to determine an impedance in tissue at a surgical area electrically disposed between the RF output and the and the RF return. The surgical retractor includes a handle and a blade configured to interface with tissue. The blade includes a return electrode.

Multifunctional surgical tool and system

A surgical tool may include a mechanical tool for selectively cutting or removing anatomical tissue, and an electrosurgery device selectively operable to apply an electric current to anatomical tissue. The mechanical tool may include a tool bit and a driver operatively connected to the tool bit, and the electrosurgery device may include a first electrode and a second electrode different than the first electrode.

FLEXIBLE RF ABLATION NEEDLE

Devices, methods, and systems for the treatment of tissue using energy delivery. Specifically, certain embodiments may be used for the treatment of lung tissue, such as lung nodules, using RF ablation, via a catheter provided with a first electrode attached to a distal end of the catheter, wherein the first electrode is hollow, wherein the first electrode comprises a piercing tip configured to pierce through an airway wall and a second electrode received in a movable manner within the first electrode, wherein the second electrode is extendable from the first electrode to form a first extended configuration. 1. A device comprising:a guide sheath;a catheter configured to be inserted into the guide sheath, the catheter comprising a distal port;a first electrode attached to a distal end of the catheter, wherein the first electrode and the catheter are hollow, thereby forming a channel configured to allow delivery of a liquid solution to the distal port, wherein the distal end of the catheter comprises a piercing tip configured to pierce through an airway wall;a second electrode configured to be received in a movable manner within the channel and configured to allow delivery of the liquid solution within the channel, wherein a distal section of the second electrode is in a first configuration when within the channel, wherein when the distal section of the second electrode extends distally from the distal end of the first electrode and the catheter, the distal section of the second electrode that is extended from the first electrode changes from the first configuration to a second configuration;a first electrical lead in electric communication with the first electrode; anda second electrical lead in electric communication with the second electrode, wherein the first and second electrical leads are connectable to a source of electric power,wherein the second configuration comprises a helical configuration.2. The device of claim 1 , further comprising a handle attached at a ...

FLEXIBLE RF ABLATION NEEDLE

Embodiments disclosed herein are directed to devices, methods, and systems for the treatment of tissue using energy delivery. Specifically, certain embodiments may be used for the treatment of lung tissue, such as lung nodules, using RF ablation, via a catheter provided with a first electrode attached to a distal end of the catheter, wherein the first electrode is hollow, wherein the first electrode comprises a piercing tip configured to pierce through an airway wall and a second electrode received in a movable manner within the first electrode, wherein the second electrode is extendable from the first electrode to form a first extended configuration. 19-. (canceled)10. A method of delivering energy to a region of lung tissue to be treated , the method comprising:inserting a catheter into a patient's airway, wherein a distal end of the catheter comprises a first electrode and a second electrode received in a sliding manner within the first electrode and configured to be extendable therefrom;navigating the catheter to an airway proximate the region of lung tissue to be treated;piercing the airway with the first electrode so as to position the first electrode into or near the region of lung tissue to be treated;extending the second electrode from a distal end of the first electrode into the region of lung tissue to be treated;activating a power source configured to deliver a therapeutic amount of energy to the region of lung tissue to be treated, wherein the power source is connected via a first electrical lead connected to the first electrode and a second electrical lead connected to the second electrode; anddelivering energy to the region of lung tissue to be treated,wherein when a distal end of the second electrode extends distally from the first electrode, a portion of the second electrode that is extended from the first electrode changes from a first configuration to a second configuration,wherein the second configuration comprises a helical configuration.11. The ...

Ablation catheter with flexible electrode

A flexible tip electrode for an ablation catheter is disclosed. The catheter includes a catheter body and a hollow elongate tip electrode disposed at a distal end of the catheter body. The electrode includes a sidewall provided with one or more elongate gaps extending therethrough. The one or more elongate gaps providing flexibility in the sidewall for bending movement of the tip electrode relative to a longitudinal axis of the catheter body.

Multi-function surgical instruments

A surgical instrument includes a housing, an inner shaft coupled to and extending distally from the housing, an end effector assembly disposed at a distal end of the inner shaft, an outer sheath that is fixed to the housing, extends distally from the housing, and is disposed about the inner shaft, and an insulative sleeve. The insulative sleeve is positioned between the inner shaft and the outer sheath. The insulative sleeve is movable relative to the inner shaft and the outer sheath between a storage position, wherein the insulative sleeve is positioned proximally of the end effector assembly, and a deployed position, wherein the insulative sleeve substantially surrounds the end effector assembly.

Surgical instrument having a bipolar end effector assembly and a deployable monopolar assembly

A deployment and retraction mechanism for a surgical instrument includes a gear box defining a longitudinal slot, a slider, a ring gear, and a planet gear. The slider is configured to engage a deployable component of the surgical instrument and is translatable along the longitudinal slot between a proximal end, corresponding to a storage condition of the deployable component, and a distal end, corresponding to a use condition of the deployable component. The planet gear is operably engaged with the ring gear and configured to orbit within the ring gear. The planet gear includes an off-center pin rotatably supporting the slider thereon. The planet gear and ring gear are configured such that a one-half orbit of the planet gear within the ring gear translates the slider from one end of the longitudinal slot to the other end of the longitudinal slot.

Method to remove a tumor using a percutaneous surgical instrument

The present invention relates to a method of removing a tumor by radiofrequency ablation, comprising providing a guiding device ( 6 ) having at least two first concentric through holes ( 8, 81, 82 ) and a plurality of second through holes ( 10, 11 ) at a periphery of the guiding device ( 6 ). The method further comprising placing the guiding device against the skin of a patient and inserting two first electrodes ( 3, 4, 5 ) into the first through holes ( 8, 81, 82 ) of the guiding device and into a patient's skin and then applying a first radiofrequency current between the two first electrodes ( 3, 4, 5 ). The method further comprising inserting a second electrode ( 5 ) through a second through hole ( 10, 11 ) and into the patient's skin and then applying a second radiofrequency current between a first electrode ( 3, 4 ) and the second electrode ( 5 ).

INSTRUMENTS AND METHODS FOR THERMAL TISSUE TREATMENT

Disclosed herein are high efficiency surgical devices and methods of using same using radio frequency (RF) electrical power to destroy tumors, form lesions, denaturize, desiccate, coagulate and ablate soft tissues, as well as to drill, cut, resect and vaporize soft tissues. More particularly, the electrosurgical instruments use externally supplied conductive or non-conductive liquids, delivered to an area of interest in the form of heated irrigant and/or steam, to thermally treat target tissues of interest, either at the tissue surface, below the tissue surface or at a site remote therefrom. 1. An electrosurgical instrument for thermal treatment of target tissue comprising:(d) an elongate shaft having a proximal end, a distal end and a longitudinal axis, wherein said proximal end is configured for connection to a power source and said distal end is configured for connection to an electrode assembly;(e) a means for supplying an irrigant to said electrode assembly; i. an active electrode formed from an electrically conductive material and having a proximal end connectable to said power source via one or more connecting elements disposed within said shaft and an exposed distal end configured to contact irrigant delivered to said electrode assembly by said irrigant supply means;', 'ii. an insulator formed from a nonconductive dielectric material and disposed about the periphery of a portion of said active electrode, wherein said tubular insulator includes at least one irrigation lumen in fluid communication said irrigant supply means, further wherein the exposed distal end of said active electrode is distal to a distal end of said tubular insulator;', 'iii. a floating electrode formed from an electrically conductive material that is in close proximity to said active electrode but electrically insulated therefrom by means of said tubular insulator, wherein said floating electrode is not directly electrically connected to either the elongate shaft or the power source, ...