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Небесная энциклопедия

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

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Мониторинг СМИ

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

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Применить Всего найдено 1063. Отображено 100.

21-06-2012 дата публикации

Irrigated ablation electrode assemblies

Номер: US20120157990A1

Автор: Steven C. Christian

Принадлежит: St Jude Medical Atrial Fibrillation Division Inc

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

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Номер записи: 1

11-10-2012 дата публикации

Method and System for Using Common Subchannel to Assess the Operating Characteristics of Transducers

Номер: US20120259327A1

Автор: Gleb V. Klimovitch, Shena H. Park, Timothy E. Ciciarelli

Принадлежит: St Jude Medical Atrial Fibrillation Division Inc

A system and method for using a common subchannel to assess operating characteristics of one of a plurality of transducers coupled to said subchannel is disclosed. The of transducers are divided into subsets, with each subset is coupled to a subchannel. The system is configured to activate a selected transducer on the subchannel and the subchannel delivers operational information on the activated transducer. The present invention reduces the number of subchannels required to collect information on the plurality of transducers. The present invention permits a more compact ablation device to be constructed based on the invention's ability to reduce the total number of subchannels required to collect transducer information.

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Номер записи: 2

27-06-2013 дата публикации

Methods and apparatuses for remodeling tissue of or adjacent to a body passage

Номер: US20130165926A1

Автор: Dolores PEREZ, Prabodh Mathur, Rabih Nassif, Shahram Moaddeb

Принадлежит: Vessix Vascular Inc

Medical devices and methods for making and using the same are disclosed. An example medical device may include a catheter shaft. An expandable member may be coupled to the catheter shaft. A plurality of flexible electrode assemblies may be coupled to the expandable member. A control unit may be coupled to the electrode assemblies. The control unit may be configured to energize the electrode assemblies for approximately 10 seconds to less than approximately 1 minute.

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Номер записи: 3

20-02-2014 дата публикации

Low profile fluid enhanced ablation therapy devices and methods

Номер: US20140052117A1

Автор: Michael G. Curley

Принадлежит: Thermedical Inc

Low profile devices and methods for delivering fluid enhanced ablation therapy are provided herein. In one embodiment, an ablation device is provided that includes an elongate body having proximal and distal ends, an inner lumen extending therethrough and at least one outlet port formed therein and configured to deliver fluid to surrounding tissue. The device can also include at least one ablation element disposed along a length of the body adjacent to the at least one outlet port and configured to deliver energy to surrounding tissue, as well as at least one heating element disposed within the inner lumen of the elongate body. The device further includes a handle having proximal and distal ends, the distal end of the handle being coupled to the proximal end of the elongate body. Further, a longitudinal axis of the elongate body extends at an angle to a longitudinal axis of the handle.

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Номер записи: 4

27-02-2014 дата публикации

Thermal feedback systems and methods of using the same

Номер: US20140058384A1

Автор: Brandon Gay, Casey M. Ladtkow, Steven P. Buysse

Принадлежит: COVIDIEN LP

A system for providing feedback during an electrosurgical procedure on a target tissue is provided. The system includes an electrosurgical energy source; an electrode probe assembly connected to the electrosurgical energy source, wherein the electrode probe assembly includes at least one electrode assembly having a needle configured to deliver electrosurgical energy to the target tissue; at least one thermal feedback assembly connected to the electrosurgical energy source, wherein each thermal feedback assembly includes at least one temperature sensor assembly; and a hub configured to selectively support the electrode probe assembly and each thermal feedback assembly such that the needle of the electrode probe assembly and each temperature sensor assembly of each thermal feedback assembly are proximate one another when disposed proximate the target tissue.

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Номер записи: 5

13-03-2014 дата публикации

Patient Warming/Electro-surgical Grounding Pad

Номер: US20140074086A1

Автор: Kent Douglas Ellis, Mary Elizabeth MacIntyre-Ellis

Принадлежит: Pintler Medical

A surgical operating room table pad that functions in multiple capacities such as a dielectric capacitor for grounding the electro-surgical current from cautery device and heating the patient contact surface for the maintenance of patient normal-thermia. The “capacitor/dielectric” is designed to allow the electrosurgical current introduced to the patient to return back to the electrosurgical generator for patient and surgical staff safety. The temperature of the patient's body is constantly measured by a series of RTD Thermister sensors and a resistive device is utilized for thermal input.

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Номер записи: 6

07-01-2021 дата публикации

MEDICAL DEVICES WITH FLEXIBLE CIRCUIT ASSEMBLIES

Номер: US20210000539A1

Автор: GROFF JOEL N., Haverkost Patrick A., LINDQUIST JEFFREY S., SQUIRE ROBERT N., SUTERMEISTER DEREK C., Willard Martin R.

Принадлежит:

Medical devices for sympathetic nerve modulation are disclosed. An example medical device for sympathetic nerve modulation may include a catheter shaft having a distal region. An expandable member may be coupled to the distal region. A flexible circuit assembly may be attached to the expandable member. The flexible circuit assembly may include a first electrode strip, a second electrode strip, and a sensor strip disposed between the first electrode strip and the second electrode strip. The first electrode strip may include a first electrode. The second electrode strip may include a second electrode. The first electrode and the second electrode may define a pair of bipolar electrodes. 1. A medical device , comprising:a catheter shaft having a longitudinal axis;a balloon comprising a cylindrical balloon body coupled to the catheter shaft;a flexible circuit assembly coupled to the catheter shaft and the balloon, the flexible circuit assembly including two or more flexible strips;wherein each of the two or more flexible strips include one or more electrodes; andwherein at least a portion of the flexible circuit assembly that is positioned on the cylindrical body of the balloon is canted relative to the longitudinal axis of the catheter shaft.2. The medical device of claim 1 , wherein the portion of the flexible circuit assembly that is canted is oriented at an angle of 45 degrees or less relative to the longitudinal axis of the catheter shaft.3. The medical device of claim 1 , wherein the portion of the flexible circuit assembly that is canted is oriented at an angle of 5-30 degrees relative to the longitudinal axis of the catheter shaft.4. The medical device of claim 1 , wherein the two or more flexible strips include a first flexible strip comprising a plurality of electrodes and a second flexible strip comprising a plurality of electrodes.5. The medical device of claim 1 , wherein the two or more flexible strips include a first flexible strip comprising a plurality ...

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Номер записи: 7

04-01-2018 дата публикации

FLEXIBLE ELECTRODE

Номер: US20180000542A1

Автор: Marass Tim, Marrs James C., Oliverius Andrew Ryan

Принадлежит:

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 ...

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Номер записи: 8

04-01-2018 дата публикации

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

Номер: US20180001103A9

Автор: "OBRIEN Kevin D.", Alinsod Red, HERCHMAN, JR. Paul R.

Принадлежит:

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 ...

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Номер записи: 9

13-01-2022 дата публикации

Balloon catheter and electrophysiological system

Номер: US20220008111A1

Автор: BO Liang, Jiaqiang JIANG, Qiancheng ZHAO, Yiyong Sun, Yunzhu XI

Принадлежит: Shanghai Microport EP MedTech Co Ltd

A balloon catheter (100) and an electrophysiological system, which aim to improve the operability of accurately monitoring the balloon surface temperature at the surface of a double-layered balloon (110). The balloon catheter (100) comprises a catheter body (130), a double-layered balloon (110), at least one temperature measuring element (120), and at least one adhesion piece (140); the temperature measuring element (120) is disposed in an interlayer (113) formed by an inner layer balloon (112) and an outer layer balloon (111); the adhesion piece (140) is adheringly connected to the temperature measuring element (120), and is simultaneously adheringly connected to the inner layer balloon (112) or the outer layer balloon (111); the temperature measuring element (120) is attached to the inner layer balloon (112) or the outer layer balloon (111) by means of the adhesion piece (140); when the double-layered balloon (110) is deformed, the adhesion piece (140) may be displaced relative to the inner layer balloon (112) or outer layer balloon (111) connected to the adhesion piece (140), which enables the temperature measuring element (120) to be displaced relative to the inner layer balloon (112) or outer layer balloon (111) connected to the adhesion piece (140).

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Номер записи: 10

12-01-2017 дата публикации

In-joint sensor for a surgical fluid management pump system

Номер: US20170007750A1

Автор: Brady Woolford, Justin Smith

Принадлежит: Individual

An in-joint pump and control device comprising a pump and an in-joint sensor. The pump is configured to convey fluid to a body joint surgical site. The pump has an algorithm associated therewith to make calculations and to assist in controlling the operation of the pump. The in-joint sensor is operatively associated with the pump by at least a communication member. The in-joint sensor comprises a sheath, an integration member attached to the sheath, a pressure sensor connected to the integration member, and a temperature sensor adjacent the sheath. The pressure sensor is adapted to provide pressure information to the pump via the communication member. The temperature sensor is also adapted to provide temperature information to the pump via the communication member.

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Номер записи: 11

17-01-2019 дата публикации

APPARATUS FOR EFFECTIVE ABLATION AND NERVE SENSING ASSOCIATED WITH DENERVATION

Номер: US20190015002A1

Автор: Almany Steven, FISCHELL DAVID R., FISCHELL TIM A., Ghazarossian Vartan, John Michael Sasha

Принадлежит:

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 ...

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Номер записи: 12

01-02-2018 дата публикации

METHOD AND APPARATUS FOR DERMATOLOGICAL HYPOPIGMENTATION

Номер: US20180028253A1

Автор: Anderson Richard R., Manstein Dieter

Принадлежит:

Exemplary embodiments of the present disclosure provide method and apparatus for effecting (e.g., lightening) an appearance of skin by cooling or freezing small separated surface regions of the skin to produce regions of local hypopigmentation. The width of the regions can be, for example, smaller than about 1 mm or 0.5 mm, and a distance between these frozen regions can be greater than about 3 times the width of the regions. An exemplary apparatus can be provided that includes a plurality of spatially-separated thermally conductive arrangements that can be affixed or otherwise coupled to a base. For example, the conductive arrangements can be regions of conductive material provided in or proximal to a thermal insulator, or thermally conductive protrusions affixed to the base. The conductive arrangements can be cooled and then contacted with the skin surface to produce the small regions of hypopigmentation. 137-. (canceled)38. A method for producing controlled amounts of hypopigmentation in skin tissue of a patient , the method comprising:identifying an area of the skin tissue to be treated with the hypopigmentation;contacting the area of the skin tissue to be treated with a cooling contact end of a skin treatment device having a flat lower surface configured for a non-penetrating contact with a surface of the skin tissue of the patient; andlocally freezing the area of the skin tissue proximal to the flat lower surface of the cooling contact end, the cooling contact end being in thermal communication with a thermoelectric cooler, the thermoelectric cooler being configured to cool the flat lower surface to a temperature between −4° C. to −30° C. to provide a controlled heat extraction from the skin tissue by transferring heat from the cooling contact end solely by a conduction,wherein the local freezing of the area of the skin tissue generates a hypopigmentation effect in the area of the skin tissue for a gradual lightening.39. The method of claim 38 , wherein the ...

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Номер записи: 13

01-02-2018 дата публикации

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

Номер: US20180028256A1

Автор: Andrew Wu, David Herzfeld, Denise Zarins, Mark S. Leung, Paul Friedrichs, Robert J. Beetel, Sowmya Ballakur

Принадлежит: Medtronic Ardian Luxembourg SARL

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

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Номер записи: 14

31-01-2019 дата публикации

ELECTRODE ASSEMBLY WITH THERMAL SHUNT MEMBER

Номер: US20190029752A1

Автор: Koblish Josef Vincent, Panescu Dorin, Schultheis Eric Andrew

Принадлежит:

According to some embodiments, a medical instrument (for example, an ablation device) comprises an elongate body having a proximal end and a distal end, an energy delivery member positioned at the distal end of the elongate body, a first plurality of temperature-measurement devices carried by or positioned within the energy delivery member, the first plurality of temperature-measurement devices being thermally insulated from the energy delivery member, and a second plurality of temperature-measurement devices positioned proximal to a proximal end of the energy delivery member, the second plurality of temperature-measurement devices being thermally insulated from the energy delivery member. 1. (canceled)2. An electrode assembly for an ablation catheter with thermal shunting , the electrode assembly comprising:a proximal electrode portion;a distal electrode portion;a filtering element electrically coupling the proximal electrode portion to the distal electrode portion and configured to present a low impedance at a frequency used for delivering ablative energy via the proximal and distal electrode portions; andat least one thermal shunt member in thermal communication with the proximal electrode portion and the distal electrode portion to selectively remove heat from at least one of the electrode assembly and tissue being treated by the electrode assembly when the electrode assembly is activated;wherein the at least one thermal shunt member extends at least partially through an interior of the electrode assembly to transfer heat from the electrode assembly during use;wherein the at least one thermal shunt member is configured to receive at least one fluid conduit extending at least partially through an interior of the at least one thermal shunt member, wherein the at least one thermal shunt member is in thermal communication with the at least one fluid conduit; andwherein the at least one fluid conduit is configured to place the electrode assembly in fluid ...

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Номер записи: 15

31-01-2019 дата публикации

METHODS OF REMOVING HEAT FROM AN ELECTRODE USING THERMAL SHUNTING

Номер: US20190029753A1

Автор: Koblish Josef Vincent, Panescu Dorin, Schultheis Eric Andrew

Принадлежит:

According to some embodiments, a medical instrument (for example, an ablation device) comprises an elongate body having a proximal end and a distal end, an energy delivery member positioned at the distal end of the elongate body, a first plurality of temperature-measurement devices carried by or positioned within the energy delivery member, the first plurality of temperature-measurement devices being thermally insulated from the energy delivery member, and a second plurality of temperature-measurement devices positioned proximal to a proximal end of the energy delivery member, the second plurality of temperature-measurement devices being thermally insulated from the energy delivery member. 1. (canceled)2. A method of heat removal from an electrode assembly during a tissue treatment procedure , the method comprising:delivering energy to an electrode assembly of an ablation system, the ablation system comprising a catheter comprising a distal end, the electrode assembly positioned along the distal end of the catheter;wherein the catheter of the ablation system comprises at least one thermal shunt member along its distal end,wherein the at least one thermal shunt member extends at least partially through an interior of the electrode assembly; andwherein the catheter further comprises at least one fluid passage extending at least partially through the interior of the electrode assembly and an interior of the at least one thermal shunt member;delivering a fluid through the at least one fluid passage; andtransferring heat from the electrode assembly to the fluid via the at least one thermal shunt member to reduce the likelihood of localized hot spots along the distal end of the catheter.3. The method of claim 2 ,{'sup': '2', 'wherein the at least one thermal shunt member is configured to transfer heat while not retaining heat, and wherein the at least one thermal shunt member comprises a thermal diffusivity greater than 1.5 cm/sec;'}wherein the electrode assembly ...

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Номер записи: 16

04-02-2021 дата публикации

ESOPHAGEAL PROBES AND METHODS

Номер: US20210030458A1

Автор: Corso Joshua G., GOWDA Ashok, HOUSSIERE Charles

Принадлежит:

The invention relates to devices and methods for affecting an internal body tube, such as the esophagus, particularly to affecting the internal body tube by inserting a device into the internal body tube and more particularly to affecting the internal body tube by at least partially sealing off a section and moving the walls of the internal body tube, and/or applying cooling to the internal body tube. This invention further relates to methods of using such devices to move portions of an internal body tube away from an area undergoing a treatment or therapy, such as to minimize damage to the internal body tube, and/or providing cooling/temperature monitoring. 4. The device of claim 1 , wherein said first and second sealing features each comprise a sealing balloon attached to at least one inflation/deflation device through said connecting conduit with a locking mechanism and a fixed volume of inflation fluid or gas.5. The device of claim 1 , wherein said second internal lumen connects to a plurality of fenestrations disposed at intervals on said outer surface of said tube portion.6. The device of claim 1 , further comprising at least one sensor disposed on said tube portion and having an output claim 1 , said at least one sensor being selected from the group consisting of a temperature sensor claim 1 , a pressure sensor claim 1 , an electrical conductivity/resistance sensor claim 1 , a position sensor claim 1 , an Mill fiducial and a CT fiducial.7. The method of claim 2 , further comprising at least one temperature sensor disposed on said tube portion and having an output that controls the power output of a thermal ablation device.8. The device of claim 1 , wherein said tube portion has an adjustable length.9. The device of claim 1 , further comprising at least one external display showing output from at least one sensor selected from the group consisting of a temperature sensor claim 1 , a pressure sensor claim 1 , an electrical conductivity/resistance sensor claim 1 ...

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Номер записи: 17

08-02-2018 дата публикации

METHODS AND APPARATUSES FOR REMODELING TISSUE OF OR ADJACENT TO A BODY PASSAGE

Номер: US20180036072A1

Автор: MATHUR PRABODH, MOADDEB SHAHRAM

Принадлежит:

Medical devices and methods for making and using the same are disclosed. An example method may include a method for treating a patient having congestive heart failure. The method may include positioning an expandable balloon in a renal artery of the patient. The expandable balloon may include a plurality of electrode assemblies. At least some of the electrode assemblies each may include at least two bipolar electrode pairs. The two bipolar electrode pairs may be longitudinally and circumferentially offset from one another. The method may also include expanding the balloon in the renal artery such that at least some of the bipolar electrode pairs are electrically coupled to a wall of the renal artery and energizing at least some of the bipolar electrode pairs so as to therapeutically alter at least one nerve proximate the renal artery to treat the patient's congestive heart failure. 1. A method for treating a patient , the method comprising:positioning an expandable balloon within a lumen of the patient's body, the expandable balloon including a plurality of electrode assemblies, at least some of the electrode assemblies each including at least two bipolar electrode pairs, the two bipolar electrode pairs being longitudinally and circumferentially offset from one another;expanding the balloon in the lumen so that at least some of the bipolar electrode pairs are electrically coupled to a wall of the lumen; andenergizing at least some of the bipolar electrode pairs so as to therapeutically alter at least one nerve proximate the lumen so that a condition of the patient is mitigated,wherein energizing includes using a plurality of temperature sensors to adjust an energy output of the bipolar electrode pairs, each temperature sensor positioned between one of the bipolar electrode pairs, andwherein energizing includes using a processor to adjust the energy output of the bipolar electrode pairs in response to monitoring feedback from the plurality of temperature sensors.2. ...

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Номер записи: 18

07-02-2019 дата публикации

ABLATION SYSTEMS WITH MULTIPLE TEMPERATURE SENSORS

Номер: US20190038347A1

Автор: Johnson Jessi E., Koblish Josef Vincent, Panescu Dorin, Schultheis Eric Andrew

Принадлежит:

According to some embodiments, a medical instrument (for example, an ablation device) comprises an elongate body having a proximal end and a distal end, an energy delivery member positioned at the distal end of the elongate body, a first plurality of temperature-measurement devices carried by or positioned within the energy delivery member, the first plurality of temperature-measurement devices being thermally insulated from the energy delivery member, and a second plurality of temperature-measurement devices positioned proximal to a proximal end of the energy delivery member, the second plurality of temperature-measurement devices being thermally insulated from the energy delivery member. 1. (canceled)2. A cardiac ablation system , comprising:a catheter comprising an electrode assembly, the electrode assembly comprising a proximal electrode and a distal electrode, wherein the proximal electrode is separated from the distal electrode by a gap; andan energy delivery device configured to deliver energy at a frequency within an ablation radiofrequency range to the electrode assembly;wherein the proximal electrode is operatively coupled to the distal electrode using a filtering element at the ablation radiofrequency range such that the proximal electrode and the distal electrode function like a single electrode, and wherein the proximal electrode and the distal electrode function as separate electrodes at high-resolution mapping frequencies;wherein the system is configured to receive signals indicative of temperature from at least one temperature sensor positioned along the proximal electrode or distal electrode;wherein the system is configured to determine, upon execution of instructions stored on a non-transitory storage medium by a hardware processor, temperature measurements from the signals received from the at least one temperature sensor; andwherein the system is configured to adjust one or more treatment parameters of the ablation procedure based, at least in ...

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Номер записи: 19

07-02-2019 дата публикации

TISSUE ABLATION AND MONITORING THEREOF

Номер: US20190038350A1

Автор: Claude John P., SALAHIEH Amr, SAUL Tom

Принадлежит:

An ablation catheter including an elongate shaft, an inflatable balloon positioned at a distal region of the elongate shaft, a first ablation electrode disposed outside of and carried by an outer surface of the inflatable balloon, a first ultrasound transducer disposed outside of the inflatable balloon, and a flexible circuit. The flexible circuit includes a first conductor and a second conductor and is disposed outside of and carried by the outer surface of the inflatable balloon. The first conductor is in electrical communication with the first ablation electrode, and the second conductor in electrical communication with the first ultrasound transducer. 1. An ablation catheter , comprising:an elongate shaft;an inflatable balloon positioned at a distal region of the elongate shaft;a first ablation electrode disposed outside of and carried by an outer surface of the inflatable balloon;a first ultrasound transducer disposed outside of the inflatable balloon; anda flexible circuit, including a first conductor and a second conductor, disposed outside of and carried by the outer surface of the inflatable balloon, the first conductor in electrical communication with the first ablation electrode, and the second conductor in electrical communication with the first ultrasound transducer.2. The ablation catheter of claim 1 , wherein the first ultrasound transducer is positioned within a periphery of the first ablation electrode.3. The ablation catheter of claim 1 , wherein the first ultrasound transducer is disposed under the first ablation electrode.4. The ablation catheter of claim 1 , wherein the first ultrasound transducer is an ultrasound receiver.5. The ablation catheter of claim 1 , wherein the first ultrasound transducer is an ultrasound emitter.6. The ablation catheter of claim 1 , wherein the first ultrasound transducer is at least partially surrounded by an insulation layer.6. The ablation catheter of claim 1 , further comprising:a second ultrasound transducer ...

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Номер записи: 20

16-02-2017 дата публикации

Ablation systems and methods using heat shunt networks

Номер: US20170042613A1

Автор: Dorin Panescu, Eric Andrew SCHULTHEIS, Josef Vincent Koblish

Принадлежит: Advanced Cardiac Therapeutics Inc

According to some embodiments, a medical instrument (for example, an ablation device) comprises an elongate body having a proximal end and a distal end, an energy delivery member positioned at the distal end of the elongate body, a first plurality of temperature-measurement devices carried by or positioned within the energy delivery member, the first plurality of temperature-measurement devices being thermally insulated from the energy delivery member, and a second plurality of temperature-measurement devices positioned proximal to a proximal end of the energy delivery member, the second plurality of temperature-measurement devices being thermally insulated from the energy delivery member.

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Номер записи: 21

15-02-2018 дата публикации

ELECTROSURGICAL SYSTEM ENERGY SOURCE

Номер: US20180042661A1

Автор: Bakos Gregory J., Long Gary L., Plescia David N.

Принадлежит:

An energy source for use with an electrosurgical system is disclosed. In one embodiment, the energy source includes a power supply, one or more capacitors coupled to the power supply, and a switching component coupled to the one or more capacitors. The switching component is configured to output pulses of a biphasic waveform. The pulses are capable of treating undesired tissue by inducing a change in voltage potential across cell membranes of a plurality of cells in the undesired tissue to promote non-thermal cell death in the plurality of cells. The pulses are also capable of treating the undesired tissue with no or minimal muscle contractions in patient tissue within reach of the biphasic waveform during treatment of the undesired tissue. 124-. (canceled)25. An electrosurgical system , comprising:an energy source; anda plurality of electrodes, wherein each of the plurality of electrodes is coupled to the energy source, and wherein each of the plurality of electrodes is positionable for electrical contact with target tissue;wherein the energy source is configured to deliver, via the plurality of electrodes, a plurality of pulses of biphasic radio frequency (RF) waveform to the target tissue, wherein the biphasic RF waveform operates at a fundamental frequency greater than that which electrically stimulates muscular cells, and wherein the plurality of pulses induce non-thermal cell death in the target tissue without a measurable stimulation in muscular tissue exposed to the biphasic RF waveform.26. The electrosurgical system of claim 25 , wherein the plurality of electrodes comprises at least two electrodes.27. The electrosurgical system of claim 25 , wherein the energy source comprises an alternating current waveform generator.28. The electrosurgical system of claim 25 , wherein the biphasic RF waveform operates at the fundamental frequency of about 330 KHz to about 900 KHz and a peak-to-peak voltage amplitude of about 200 VAC to about 12 claim 25 ,000 VAC.29. The ...

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Номер записи: 22

01-03-2018 дата публикации

Automatic irrigation-coordinated lithotripsy

Номер: US20180055568A1

Автор: Kurt G. Shelton, Tailin Fan

Принадлежит: Gyrus ACMI Inc

Systems and methods for controlling an irrigation flow rate during a lithotripsy procedure are provided. The system includes a laser configured for lithotripsy procedure, a lithotripsy irrigation system, and a temperature sensor configured to provide input to enable control of a flow of the lithotripsy irrigation system in response to a change in temperature from the operation of the laser.

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Номер записи: 23

28-02-2019 дата публикации

Cryogenic ablation system with rotatable and translatable catheter

Номер: US20190059970A1

Автор: Cesar A. Ico, Dennis Franklin BURKE, Gabriel F.W. NEWELL, Patrick P. Wu, Timothy Douglas Holland

Принадлежит: Pentax of America Inc

An ablation assembly includes a handle, a catheter assembly and a connector locking assembly. The catheter assembly includes: a catheter shaft, a balloon and a connector at the distal and proximal ends of the catheter shaft, and a delivery tube extending between there between. The connector includes a connector body secured to the proximal end and a plug secured to the delivery tube, the plug and delivery tube movable axially and rotationally. The handle includes an open portion receiving the plug and the connector body. The connector locking assembly includes: means for simultaneously automatically connecting the plug and the connector body to the handle to place the connector in a load state prior to use, and means for automatically releasing the connector body and thereafter the plug from the handle to place the connector in an eject state to permit the connector to be removed from the handle.

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Номер записи: 24

15-03-2018 дата публикации

Ablation electrode assemblies and methods for using same

Номер: US20180071018A1

Автор: Reed R. Heimbecher, Steven C. Christian

Принадлежит: St Jude Medical Atrial Fibrillation Division Inc

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

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Номер записи: 25

15-03-2018 дата публикации

Thermal feedback systems and methods of using the same

Номер: US20180071023A1

Автор: Brandon C. Gay, Casey M. Ladtkow, Steven P. Buysse

Принадлежит: COVIDIEN LP

A system for providing feedback during an electrosurgical procedure on a target tissue is provided. The system includes an electrosurgical energy source; an electrode probe assembly connected to the electrosurgical energy source, wherein the electrode probe assembly includes at least one electrode assembly having a needle configured to deliver electrosurgical energy to the target tissue; at least one thermal feedback assembly connected to the electrosurgical energy source, wherein each thermal feedback assembly includes at least one temperature sensor assembly; and a hub configured to selectively support the electrode probe assembly and each thermal feedback assembly such that the needle of the electrode probe assembly and each temperature sensor assembly of each thermal feedback assembly are proximate one another when disposed proximate the target tissue.

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Номер записи: 26

14-03-2019 дата публикации

CATHETER SENSING AND IRRIGATING

Номер: US20190076190A1

Автор: Bond Jonathan Matthew, Collier Ian Matthew, Harlev Doron, Wallace Andrew Miles

Принадлежит:

Ablation systems of the present disclosure facilitate the safe formation of wide and deep lesions. For example, ablation systems of the present disclosure can allow for the flow of irrigation fluid and blood through an expandable ablation electrode, resulting in efficient and effective cooling of the ablation electrode as the ablation electrode delivers energy at a treatment site of the patient. Additionally, or alternatively, ablation systems of the present disclosure can include a deformable ablation electrode and a plurality of sensors that, in cooperation, sense the deformation of the ablation electrode, to provide a robust indication of the extent and direction of contact between the ablation electrode and tissue at a treatment site. 123-. (canceled)24. A catheter , comprising:an elongated shaft having a proximal end region and a distal end region;an irrigation element at the distal end region of the elongated shaft and positioned to direct irrigation fluid away from the distal end region of the elongated shaft; andan electrical energy delivery electrode at the distal end region of the elongated shaft and enveloping the irrigation element, the electrical energy delivery electrode comprises multiple struts that define a plurality of bounded cells,', 'the struts are configured to conduct and deliver electrical energy along a majority of their length,', 'the struts are movable relative to one another, and', 'at least a portion of the struts are in electrical communication with one another to form a single electrical conductor., 'wherein—'}25. The catheter of wherein the electrical energy delivery electrode comprises a braid.26. The catheter of wherein the electrical energy delivery electrode comprises a mesh.27. The catheter of wherein the struts are coupled to one another at joints.28. The catheter of wherein the struts are moveable relative to one another such that a radial dimension of the electrical energy delivery electrode increases as the struts move ...

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Номер записи: 27

21-03-2019 дата публикации

ABLATION AND TEMPERATURE MEASUREMENT DEVICES

Номер: US20190082969A1

Автор: FLAHERTY J. Christopher, Flaherty R. Maxwell, Garibotto John T., Gorman William J.

Принадлежит:

A temperature measurement probe for a patient is provided. The probe includes a sensor assembly and produces a temperature map comprising temperature information for multiple patient locations. 1. A temperature measurement apparatus for a patient , the apparatus comprising:a transmission conduit configured to rotate and translate relative to collect infrared energy from a tissue surface;at least one infrared fiber arranged within the transmission conduit and configured transmit infrared signals corresponding to the collected infrared energy; anda sensor assembly configured to process the infrared signals to calculate a temperature of the tissue surface.2. The apparatus of claim 1 , wherein the tissue surface is an esophagus of a patient claim 1 , and the transmission conduit is configured to rotate 360° to measure an internal circumference of the tissue surface of the esophagus.3. The apparatus of claim 1 , wherein the transmission conduit is configured to rotate and translate in a reciprocating motion.4. The apparatus of claim 3 , wherein the transmission conduit is configured to translate and rotate in the reciprocating motion to collect the infrared energy across an area of the tissue surface and the sensor assembly is configured to combine the infrared signals collected across the area of the tissue surface and produce a temperature map indicating the temperature within the area of the tissue surface.5. The apparatus of claim 1 , wherein the transmission conduit includes a lens configured to direct the infrared energy from the tissue surface toward the at least one infrared fiber.6. The apparatus of claim 1 , wherein the at least one infrared fiber is configured to remain stationary relative to the rotating and translation transmission conduit.7. The apparatus of claim 1 , wherein the at least one infrared fiber includes an infrared fiber.8. The apparatus of claim 1 , wherein the sensor assembly is configured to continuously process the infrared signals to ...

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Номер записи: 28

21-03-2019 дата публикации

SYSTEMS AND METHODS FOR ESTIMATING TISSUE PARAMETERS USING SURGICAL DEVICES

Номер: US20190083168A1

Автор: WHAM Robert H.

Принадлежит:

Systems and methods for estimating tissue parameters, including mass of tissue to be treated and a thermal resistance scale factor between the tissue and an electrode of an energy delivery device, are disclosed. The method includes sensing tissue temperatures, estimating a mass of the tissue and a thermal resistance scale factor between the tissue and an electrode, and controlling an electrosurgical generator based on the estimated mass and the estimated thermal resistance scale factor. The method may be performed iteratively and non-iteratively. The iterative method may employ a gradient descent algorithm that iteratively adds a derivative step to the estimates of the mass and thermal resistance scale factor until a condition is met. The non-iterative method includes selecting maximum and minimum temperature differences and estimating the mass and the thermal resistance scale factor based on a predetermined reduction point from the maximum temperature difference to the minimum temperature difference. 19-. (canceled)10. A method of controlling a system that includes a generator that generates energy to treat tissue , the method comprising:providing a test signal to the tissue;sensing temperatures of the tissue and an electrode of the system a predetermined number of times;calculating a temperature difference for each sensed temperature value;estimating mass of the tissue and a thermal resistance scale factor between the tissue and the electrode; andgenerating a control signal to control an output stage of the generator based on the estimated mass of the tissue and the estimated thermal resistance scale factor.11. The method according to claim 10 , wherein the mass of the tissue and the thermal resistance scale factor are estimated based on the sensed temperatures and the calculated changes in temperature.12. The method according to claim 11 , wherein estimating the mass of the tissue and a thermal resistance scale factor includes:calculating an initial mass estimate ...

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Номер записи: 29

21-03-2019 дата публикации

IRRIGATED ABLATION ELECTRODE ASSEMBLY HAVING OFF-CENTER IRRIGATION PASSAGEWAY

Номер: US20190083173A1

Автор: Geurkink Christopher J., Wang Huisun

Принадлежит:

An irrigated ablation catheter includes a shaft and an electrode assembly affixed to a distal end of the shaft. The distal electrode assembly includes a manifold and an ablation electrode affixed together and extending along a center axis. The electrode has a distal irrigation passageway extending therethrough to an opening at a distal tip of the electrode. The opening of the irrigation passageway is offset in distance from the center axis, and allows a thermal sensor such as a thermocouple to be located in a sensor cavity in the electrode on or near the center axis. One variation involves providing a pair of distal irrigation passageways through the electrode where both of the openings of the passageways are offset from the center axis. The thermal sensor in this variation is located in the sensor cavity substantially on the center axis. 125.-. (canceled)26. A distal assembly of an irrigated ablation catheter , comprising:a manifold and an ablation electrode extending along a central axis;a temperature sensor disposed in the electrode configured to produce a temperature signal indicative of a temperature value of the electrode;the manifold comprising a distribution cavity, wherein the manifold is configured for connection to a distal end of a shaft of the catheter, and wherein a longitudinal axis of at least a portion of the distribution cavity is offset in distance from the central axis by a first amount of offset;the ablation electrode including a first irrigation passageway.27. The assembly of wherein the thermal sensor and the ablation electrode are configured to be thermally insulated from the first irrigation passageway.28. The assembly of wherein the temperature sensor comprises one of a thermocouple and a thermistor.29. The assembly of wherein the first irrigation passageway comprises a first opening at a distal tip of the electrode.30. The assembly of wherein the manifold includes a main body having the distribution cavity in communication with an inlet ...

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Номер записи: 30

02-04-2015 дата публикации

Graphical user interface for association with an electrode structure deployed in contact with a tissue region

Номер: US20150094710A1

Автор: David S. Utley, Jay Qin, John W. Gaiser, Peter H. Muller, Scott H. West, Stuart D. Edwards

Принадлежит: Mederi Therapeutics Inc

Systems and methods deploy an electrode structure in contact with the tissue region. The electrode structure carries a sensor at a known location on the electrode structure to monitor an operating condition. The systems and methods provide an interface, which generate an idealized image of the electrode structure and an indicator image to represent the monitored operating condition in a spatial position on the idealized image corresponding to the location of the sensor on the electrode structure. The interface displays a view image comprising the idealized image and indicator image. The systems and methods cause the electrode structure to apply energy to heat the tissue region while the view image is displayed on the display screen.

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Номер записи: 31

07-04-2016 дата публикации

CATHETER DEVICE INCLUDING FLOW SENSING

Номер: US20160095652A1

Автор: Ghaffari Roozbeh, Hsu Yung-Yu, Klinker Lauren E., Lee Stephen P., Liu Clifford, Quivira Fernando, WORK JOHN

Принадлежит:

Devices and methods are provided for performing an ablation procedure on tissue with flow monitoring using flow sensors. The devices include a catheter, and at least one flow sensor disposed on the catheter, and a component for applying the ablation procedure. An assessment module provides an indication of the efficacy of the ablation procedure based on the flow measurement from the flow sensor. 1. A device , comprising:a catheter;at least one flow sensor coupled to the catheter;at least one component coupled to the catheter to perform an ablation procedure on a portion of a tissue proximate to the catheter; andan assessment module coupled to the flow sensor to receive data indicative of at least one flow measurement from the at least one flow sensor and provide an indication of the efficacy of the ablation procedure based on the data indicative of at least one flow measurement.246-. (canceled) This application claims priority to U.S. provisional application Ser. No. 61/668,338, filed on Jul. 5, 2012, entitled “METHOD AND APPARATUS FOR DENERVATION,” U.S. provisional application Ser. No. 61/728,653, filed on Nov. 20, 2012, entitled “RENAL DENERVATION,” and U.S. provisional application Ser. No. 61/733,575, filed on Dec. 5, 2012, entitled “INCREASING THE RESOLUTION OF TEMPERATURE MEASUREMENT FOR FLOW DETECTION IN THE RENAL ARTERY,” each of which is hereby incorporated herein by reference in its entirety, including drawings.Diseases such as heart disease, stroke and hypertension are a global epidemics that affects billions of people worldwide Hypertension underlies the progression of several debilitating diseases, including heart disease and stroke. Despite widespread use of anti-hypertension medication to counter high blood pressure, the prevalence of hypertension is alarmingly high and constitutes a severe economic burden on health care.Blood pressure is controlled, in large part, by the sympathetic nervous system. The sympathetic nervous system involves several ...

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Номер записи: 32

28-03-2019 дата публикации

System for skin cancer treatment using low intensity ultrasound

Номер: US20190091491A1

Автор: Daniel Jordan Rogers, Miriam Sara BOER

Принадлежит: SONIFY BIOSCIENCES LLC

The present invention relates to a system for skin cancer treatment using low intensity ultrasound. The system comprises an ultrasound transducer, a temperature sensing unit, and a control unit. The temperature sensing unit measures the temperature of the skin being exposed to ultrasound and provides temperature data to the control unit, which controls the ultrasound transducer accordingly.

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Номер записи: 33

20-04-2017 дата публикации

Catheter device including flow sensing

Номер: US20170105795A1

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

Принадлежит: MC10 Inc

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

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Номер записи: 34

03-07-2014 дата публикации

Methods, apparatus, and systems for tissue dissection and modification

Номер: US20140188111A1

Автор: Paul Joseph Weber

Принадлежит: TDM SURGITECH Inc

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

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Номер записи: 35

13-05-2021 дата публикации

CATHETER DISTAL END MADE OF PLASTIC TUBE AND FLEXIBLE PRINTED CIRCUIT BOARDS

Номер: US20210137594A1

Автор: Algawi Yehuda, Altmann Andres Claudio, Beeckler Christopher Thomas, Govari Assaf, Herrera Kevin Justin, Keyes Joseph Thomas, Sitnitsky Ilya

Принадлежит:

A catheter includes an insertion tube, a flexible substrate and one or more electrical devices. The insertion tube is configured for insertion into a patient body. The flexible substrate is configured to wrap around a distal end of the insertion tube and includes electrical interconnections. The electrical devices are coupled to the flexible substrate and are connected to the electrical interconnections. 2. The catheter according to claim 1 , wherein the internal member is hollow so as to form an internal lumen.3. The catheter according to claim 1 , wherein the sheet of the first flexible substrate or the sheet of the second flexible substrate comprises a flexible printed circuit board (PCB).4. The catheter according to claim 1 , wherein the sheet of the first flexible substrate comprises one or more films so as to form at least some of the conductive traces and the one or more electrical devices.5. The catheter according to claim 1 , wherein the one or more electrical devices comprise one or more electrodes.6. The catheter according to claim 1 , wherein the one or more electrical devices comprise one or more thermocouples.7. The catheter according to claim 1 , wherein the one or more electrical devices comprise one or more thermistors.8. The catheter according to claim 1 , wherein the one or more electrical devices comprise one or more pressure sensors.9. The catheter according to claim 1 , wherein the one or more electrical devices comprise one or more position sensors.10. The catheter according to claim 1 , wherein the respective sheets of the first and second flexible substrates comprise a single contiguous section.11. The catheter according to claim 1 , wherein the first and second edges of the sheet of first flexible substrate are welded to one another when wrapped around the distal end.12. The catheter according to claim 1 , wherein the dome-cover is glued to the apex of the distal end.13. The catheter according to claim 1 , wherein the dome-cover comprises a ...

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Номер записи: 36

25-08-2022 дата публикации

Flexible circuit having improved adhesion to a renal nerve modulation balloon

Номер: US20220265346A1

Автор: Ajay Gupta, Cass A. Hanson, Daniel T. Quillin, Hong Cao, Jeffrey S. Lindquist, Kenneth R. Larson, Paul J. Miller

Принадлежит: Boston Scientific Scimed Inc

A balloon for renal nerve modulation is disclosed. The balloon may include a polymer material forming a balloon wall having an outer surface and flexible circuits comprising a base selectively adhered to the exterior surface of the balloon wall. Adhesive is selectively applied to the outer surface of the balloon, to the flexible circuit or to both such that the adhesive is selectively deposited on the at least a portion of the at least two pads or on the at least a portion of the at least two pads and to a portion of the distal spline. The portion of the at least two pads or the portion of the at least two pads and a portion of the distal spline are adhered to the outer surface of the balloon and a remainder of the flexible circuit moves freely with respect to the outer surface of the balloon.

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Номер записи: 37

01-09-2022 дата публикации

Apparatus for treatment of tumors using a treatment object and powering of the treatment object

Номер: US20220273359A1

Автор: David Cohen

Принадлежит: Individual

A device for treatment of a tumor comprises a treatment object for placement in or around the tumor. The treatment object has a heating surface which is placed against tumor tissue and which achieves a controlled treatment temperature that is higher than a patient body temperature. An energy source is external to the treatment object and provides energy to reach the treatment temperature. The energy source may be contactless.

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Номер записи: 38

10-06-2021 дата публикации

System and Method for Mitigating Rising Impedance Via a Pump Assembly During Use of Cooled Radiofrequency Probes

Номер: US20210169556A1

Автор: Jennifer J. BARRETT, Joseph DIPIETRO, Rasagnya M. VISWANADHA, Ruoya Wang, Tyler W. CRONE

Принадлежит: Avent Inc

A method of treating tissue of a patient's body includes providing a power source coupled to at least one probe assembly. The probe assembly includes an elongate member with a distal region and a proximal region. The distal region has an electrically and thermally-conductive energy delivery device for delivering one of electrical and radiofrequency energy to the patient's body. The electrically and thermally-conductive energy delivery device has one or more internal lumens for circulating a cooling fluid therethrough and an electrically and thermally-conductive protrusion having a temperature sensing element. The temperature sensing element extends from a distal end of the energy delivery device. The method includes inserting the energy delivery device of the at least one probe assembly into the patient's body. Further, the method includes routing the energy delivery device of the at least one probe assembly to the tissue of the patient's body. The method also includes simultaneously circulating the cooling fluid through the one or more internal lumens via at least one pump assembly and delivering energy from the power source to the tissue through the energy delivery device. Further, the method includes monitoring one or more procedure parameters while delivering the energy from the power source to the tissue through the energy delivery device. Moreover, the method includes determining, in real-time, whether a rising impedance event is likely to occur in a predetermined time period based on the one or more procedure parameters and determining a command for the pump assembly based on whether the rising impedance event is likely to occur in the predetermined time period.

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Номер записи: 39

10-06-2021 дата публикации

Devices for therapeutic nasal neuromodulation and associated methods and systems

Номер: US20210169566A1

Автор: Brian SHIELDS, Conor Farrell, David TOWNLEY, Ivan KEOGH, Michele QI ZHAN

Принадлежит: National University of Ireland Galway NUI

Devices for therapeutic nasal neuromodulation and associated systems and methods are disclosed herein. A system for therapeutic neuromodulation in a nasal region configured in accordance with embodiments of the present technology can include, for example, a shaft and a therapeutic element at a distal portion of the shaft. The shaft can locate the distal portion intraluminally at a target site inferior to a patient's sphenopalatine foramen. The therapeutic element can include an energy delivery element configured to therapeutically modulate postganglionic parasympathetic nerves at microforamina of a palatine bone of the human patient for the treatment of rhinitis or other indications. In other embodiments, the therapeutic element can be configured to therapeutically modulate nerves that innervate the frontal, ethmoidal, sphenoidal, and maxillary sinuses for the treatment of chronic sinusitis.

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Номер записи: 40

24-05-2018 дата публикации

HANDPIECE ASSEMBLY FOR LASER TREATMENT DEVICE

Номер: US20180140865A1

Автор: Boutoussov Dmitri, Kojima Rolf G.

Принадлежит: BIOLASE, Inc.

Embodiments of the invention include a handpiece system including a detachable cable that can receive at least power, and a detachable cable connector, where the detachable cable connector and detachable cable are reversibly attachable to each other. In some embodiments, the system includes an interchangeable laser module, where the laser module and detachable cable connector are reversibly attachable to each other. Further, the interchangeable laser module is configured and arranged to receive at least the power via the cable connector when coupled to the cable connector, and to be removed from the detachable cable connector and replaced with another laser module. In some embodiments, the system further includes an interchangeable handpiece which is reversibly attachable to the interchangeable laser module. Further, the interchangeable handpiece is configured and arranged to be removed from the interchangeable laser module and replaced with another interchangeable handpiece. 1. A handpiece system comprising:a detachable cable configured and arranged to receive at least power;a detachable cable connector, the detachable cable connector and detachable cable being reversibly attachable to each other;at least one interchangeable laser module, the at least one interchangeable laser module and the detachable cable connector being reversibly attachable to each other, wherein the at least one interchangeable laser module is configured and arranged to receive at least the power via the cable connector when coupled to the cable connector, and to be removed from the detachable cable connector and replaced with another laser module; andat least one interchangeable handpiece, at least one interchangeable handpiece and the at least one interchangeable laser module being reversibly attachable to each other, and wherein the at least one interchangeable handpiece is configured and arranged to be removed from the at least one interchangeable laser module and replaced with at least ...

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Номер записи: 41

21-08-2014 дата публикации

Treatment system

Номер: US20140236140A1

Автор: Kazue Tanaka, Sadayoshi Takami, Takashi Irisawa, Toshifumi Katsuragi, Yoshitaka Honda

Принадлежит: OLYMPUS MEDICAL SYSTEMS CORP

A treatment system includes a holding section that has a heat generation section, a signal output section that supplies a drive signal to the heat generation section, a setting section that sets a target temperature of the heat generation section, a signal detection section that detects the drive signal, a signal extraction section that extracts an extracted signal of a predetermined frequency band from the drive signal detected by the signal detection section, a fault detection section that detects a precursory phenomenon of a fault of the heat generation section when the extracted signal reaches a predetermined threshold, and a control section that controls the drive signal to the heat generation section in a treatment mode for treating the living tissue at the target temperature or in a test mode for detecting the precursory phenomenon.

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Номер записи: 42

07-06-2018 дата публикации

FLEX TIP FLUID LUMEN ASSEMBLY WITH TERMINATION TUBE

Номер: US20180154069A1

Автор: Breidall Benjamin Carl, Khieu Xuan Yen, Oliverius Andrew, Pai Sameer Deviprasad, Potter Daniel Joe, Tegg Troy T.

Принадлежит:

A catheter tip is disclosed comprising a tip electrode comprising a ledge feature, and a center cavity and a manifold assembly comprising a fluid lumen manifold and a stop tube. The stop tube can be coupled to the fluid lumen manifold and configured to abut the ledge feature such that a distal end of the fluid lumen manifold extends a pre-determined distance into the center cavity of the tip electrode. The fluid lumen manifold can comprise a plurality of sideholes which can be sized and configured to distribute an irrigant to the tip electrode. The catheter tip can comprise a flexible tip electrode. 120.-. (canceled)21. A catheter tip assembly comprising:a tip electrode comprising, an electrode wall, a ledge feature and a center cavity, wherein the electrode wall defines the center cavity; anda manifold assembly comprising a fluid lumen manifold and a stop tube, wherein a distal end of the manifold assembly is disposed within the center cavity,wherein the stop tube is coupled to the fluid lumen manifold and abuts the ledge feature such that a distal end of the fluid lumen manifold extends a pre-determined distance into the center cavity of the tip electrode.22. The catheter tip assembly according to wherein the pre-determined distance is configured to allow an irrigation fluid into the center cavity of the tip electrode.23. The catheter tip assembly according to further comprising a stem including a proximal face claim 21 , wherein the stop tube is coupled to the fluid lumen manifold by an adhesive positioned between the stop tube and the proximal face.24. The catheter tip assembly according to wherein a distal portion of the fluid lumen manifold further comprises a plurality of sideholes.25. The catheter tip assembly according to wherein the plurality of sideholes are of varying sizes.26. The catheter tip assembly according to wherein a subset of the plurality of sideholes more distally located comprise a smaller diameter than a subset of the plurality of sideholes ...

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Номер записи: 43

07-06-2018 дата публикации

MEDICAL SYSTEMS AND METHODS FOR MODULATING NERVES

Номер: US20180154166A1

Автор: Cao Hong, Wang Huisun

Принадлежит:

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. Two or more electrodes may be positioned adjacent to the distal end region of the elongate shaft. A control unit may supply power and control algorithms to the electrodes. The control algorithm may allow the electrodes to be operated simultaneously and individually. 2. The nerve modulation system of claim 1 , wherein the control unit applies power to the two or more electrodes simultaneously.3. The nerve modulation system of wherein the control unit applies power to fewer than all of the two or more electrodes.4. The nerve modulation system of claim 1 , further comprising a temperature sensor disposed adjacent to each of the two or more electrodes.5. The nerve modulation system of claim 1 , wherein the control unit is configured to monitor electrical parameters of each circuit created by the control unit claim 1 , electrode and ground pad.6. The nerve modulation system of claim 5 , wherein the control unit is configured to terminate ablation upon reaching a predetermined temperature or electrical parameter.720-. (canceled) This application is a divisional application of U.S. application Ser. No. 14/194,570, filed Feb. 28, 2014, the entirety of which is incorporated herein by reference, which claims priority under 35 U.S.C. § 119 to U.S. Provisional Application Ser. No. 61/777,744, filed Mar. 12, 2013, the entirety of which is incorporated herein by reference.The present disclosure pertains to medical devices, and methods for using medical devices. More particularly, the present disclosure pertains to elongated medical devices for modulating nerves.A wide variety of intracorporeal medical devices have been developed for medical use, for example, intravascular use. Some of these devices include guidewires, catheters, and the like. These ...

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Номер записи: 44

14-05-2020 дата публикации

ELECTROSURGICAL SYSTEM ENERGY SOURCE

Номер: US20200146741A1

Автор: Bakos Gregory J., Long Gary L., Plescia David N.

Принадлежит:

An energy source for use with an electrosurgical system is disclosed. In one embodiment, the energy source includes a power supply, one or more capacitors coupled to the power supply, and a switching component coupled to the one or more capacitors. The switching component is configured to output pulses of a biphasic waveform. The pulses are capable of treating undesired tissue by inducing a change in voltage potential across cell membranes of a plurality of cells in the undesired tissue to promote non-thermal cell death in the plurality of cells. The pulses are also capable of treating the undesired tissue with no or minimal muscle contractions in patient tissue within reach of the biphasic waveform during treatment of the undesired tissue. 124-. (canceled)25. An energy source configured to deliver , via a plurality of electrodes , a plurality of pulses of a biphasic radio frequency (RF) waveform to a target tissue , wherein the biphasic RF waveform operates at a fundamental frequency greater than that which electrically stimulates muscular cells , and wherein the plurality of pulses induce non-thermal cell death in the target tissue without a measurable stimulation in muscular tissue exposed to the biphasic RF waveform.26. The energy source of claim 25 , wherein the energy source comprises an alternating current waveform generator.27. The energy source of claim 25 , wherein the biphasic RF waveform operates at the fundamental frequency of about 330 KHz to about 900 KHz and a peak-to-peak voltage amplitude of about 200 VAC to about 12 claim 25 ,000 VAC.28. The energy source of claim 25 , wherein the biphasic RF waveform operates at the fundamental frequency of about 400 KHz to about 500 KHz and a peak-to-peak voltage amplitude of about 5 claim 25 ,000 VAC to about 12 claim 25 ,000 VAC.29. The energy source of claim 25 , further configured to deliver the plurality of pulses in a plurality of bursts claim 25 , and wherein each burst includes a number of pulses.30. The ...

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Номер записи: 45

28-08-2014 дата публикации

Catheter assembly for treatment of hypertrophic tissue

Номер: US20140243810A1

Автор: Guangbin HE, Jing Hu, Jun Zhang, Liwen Liu, Shuping Ge, Xiaodong Zhou

Принадлежит: BIOSONO Inc

The present invention teaches a new apparatus and process of selective ablation of the hypertrophic tissue to treat hypertrophic cardiomyopathy. The apparatus and process involve percutaneously delivering radiofrequency energy through a manipulable catheter to irradiate the thickened septum to reduce tissue volume of the septum and enhance myocardial function. The invention also teaches use of a thermosensor feedback control to prevent coagulation at the RF producing electrodes and navigating the catheter with an ultrasound transducer operably attached to the catheter assembly.

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Номер записи: 46

01-07-2021 дата публикации

Arrays for Delivering Tumor Treating Fields (TTFields) with Individually Accessible Electrode Elements and Temperature Sensors

Номер: US20210196348A1

Автор: WASSERMAN Yoram

Принадлежит: Novocure GmbH

Tumor treating fields (TTFields) can be delivered to a subject's body at higher field strengths by switching off one or more electrode elements in a transducer array that are overheating. This may be accomplished by using thermistors that sense the temperature of each electrode element. Portions of the wiring of each transducer array is shared between the electrode elements and the thermistors by using a plurality of conductors, each of which electrically connects (a) a pin of a connector, (b) a respective electrode element, and (c) a respective thermistor. In some embodiments, all of the thermistors are wired in series. In other embodiments, all the thermistors share a common connection. 1. An apparatus for applying an alternating electric field to a subject's body , the apparatus comprising:a plurality of electrode elements;a support configured to hold the electrode elements against the subject's body;a plurality of thermistors, each of the thermistors having a first terminal and a second terminal, wherein each of the thermistors is positioned to sense a temperature at a corresponding respective one of the electrode elements;a connector having a plurality of first pins and a second pin;a plurality of first conductors, each of which provides an electrically conductive path between (a) a respective one of the first pins, (b) a respective one of the electrode elements, and (c) the first terminal of the corresponding thermistor; anda second conductor that provides an electrically conductive path between the second pin and the second terminal of at least one of the thermistors.2. The apparatus of claim 1 , wherein the second terminals of all the thermistors are wired together.3. The apparatus of claim 2 , wherein the second terminals of all the thermistors are wired together using at least one of (a) at least one trace on a flex circuit and (b) at least one wire.4. The apparatus of claim 1 , wherein the plurality of thermistors are arranged in series claim 1 , ...

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Номер записи: 47

13-06-2019 дата публикации

Catheter and method for catheter assembly

Номер: US20190175056A1

Автор: Eden Kidishman, Sharona Ben Shoshan, Shemer Shmaryau Berkowitz

Принадлежит: Biosense Webster Israel Ltd

Described herein is a catheter and method for catheter assembly. The flexible substrate includes a number of layers, where each layer has a number of printed wires. The printed substrate is environmentally protected. The printed substrate is rolled and inserted into the catheter. Connectors are attached to each end of the rolled substrate. The connectors are connected to sensors at a distal end of the catheter and with electrical cards or a cable connector at a proximate end of the catheter. At least one layer of the substrate is connected to a coil in a magnetic sensor. A layer in which the traces are shorted in the distal end is used to measure a magnetic interference. These measurements are used by a processor or hardware to cancel out the magnetic interference effect on the other layers. In an implementation, another printed substrate can be wrapped within the catheter shaft and used for non-magnetic type sensors.

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Номер записи: 48

06-07-2017 дата публикации

SURGICAL INSTRUMENT WITH STAGED APPLICATION OF ELECTROSURGICAL AND ULTRASONIC ENERGY

Номер: US20170189093A1

Автор: Houser Kevin L.

Принадлежит:

An apparatus includes a body, a shaft assembly, an end effector, and a control module. The shaft assembly extends distally from the body and includes an acoustic waveguide. The waveguide is configured to acoustically couple with an ultrasonic transducer. The end effector includes an ultrasonic blade, a clamp arm, an electrode, and a sensor. The ultrasonic blade is in acoustic communication with the waveguide. The clamp arm is operable to compress tissue against the ultrasonic blade. The electrode is operable to apply radiofrequency (RF) electrosurgical energy to tissue. The sensor is operable to sense a condition of tissue contacted by the end effector. The control module is operable to control delivery of ultrasonic power and RF electrosurgical energy through the end effector based on data from the sensor. 1. An apparatus comprising:(a) a body;(b) a shaft assembly, wherein the shaft assembly extends distally from the body, wherein the shaft assembly comprises an acoustic waveguide, wherein the waveguide is configured to acoustically couple with an ultrasonic transducer; (i) an ultrasonic blade in acoustic communication with the waveguide,', '(ii) a clamp arm, wherein the clamp arm is operable to compress tissue against the ultrasonic blade,', '(iii) an electrode, wherein the electrode is operable to apply radiofrequency (RF) electrosurgical energy to tissue, and', '(iv) a sensor, wherein the sensor is operable to sense a condition of tissue contacted by the end effector; and, '(c) an end effector, wherein the end effector comprises(d) a control module, wherein the control module is operable to control delivery of ultrasonic power and RF electrosurgical energy through the end effector based on data from the sensor.2. The apparatus of claim 1 , wherein the control module is configured to:(i) first, activate the end effector to apply only RF electrosurgical energy to tissue captured between the clamp arm and the ultrasonic blade, and(ii) second, activate the end ...

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Номер записи: 49

20-06-2019 дата публикации

Skin wrinkle treatment

Номер: US20190183562A1

Автор: Alan David Widgerow

Принадлежит: LIFE CARE MEDICAL DEVICES Ltd

A method for treating skin may first involve contacting an applicator of a skin heating device with an epidermal layer of the skin. The applicator may be activated to generate high-frequency alternating magnetic fields. The applicator may be used to heat a dermal layer of the skin, with the high-frequency alternating magnetic fields, to a temperature of less than 40 degrees Celsius, to stimulate a release of heat shock protein in the dermal layer to promote collagen generation. The method may also involve limiting heating of the dermal layer of the skin to less than 40 degrees Celsius.

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Номер записи: 50

11-06-2020 дата публикации

Systems and methods for therapeutic nasal neuromodulation

Номер: US20200179041A1

Автор: Brian SHIELDS, David TOWNLEY

Принадлежит: Neurent Medical Ltd

The invention generally relates to systems and methods for therapeutically modulating nerves in or associated with a nasal region of a patient for the treatment of a rhinosinusitis condition.

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Номер записи: 51

11-06-2020 дата публикации

Systems and methods for therapeutic nasal neuromodulation

Номер: US20200179042A1

Автор: Brian SHIELDS, David TOWNLEY

Принадлежит: Neurent Medical Ltd

The invention generally relates to systems and methods for therapeutically modulating nerves in or associated with a nasal region of a patient for the treatment of a rhinosinusitis condition.

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Номер записи: 52

12-07-2018 дата публикации

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

Номер: US20180193590A1

Автор: Caplan Jay, FLAHERTY J. Christopher, Gardner Craig M., Rajagopalan Harith

Принадлежит: Fractyl Laboratories, Inc.

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

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Номер записи: 53

28-07-2016 дата публикации

Catheter or guidewire device including flow sensing and use thereof

Номер: US20160213424A1

Автор: John A. Wright, Jr., John Work, Lauren Klinker, Roozbeh Ghaffari, Stephen Lee

Принадлежит: MC10 Inc

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

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Номер записи: 54

26-07-2018 дата публикации

IRRIGATED ABLATION ELECTRODE ASSEMBLIES

Номер: US20180206912A1

Автор: Christian Steven C.

Принадлежит:

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

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Номер записи: 55

26-07-2018 дата публикации

GUIDE AND FLEXIBLE SLEEVE FOR USE WITH CATHETERS

Номер: US20180206913A1

Автор: Johnson Theodore A.

Принадлежит:

Embodiments of a guide and flexible sleeve for use with catheters for ablation or other medical procedures are disclosed. An exemplary catheter comprises a guide element having a proximal end and a distal end, the distal end configurable in a desired shape. A flexible sleeve is conformable to the guide element so that the flexible sleeve slides over the guide element, the flexible sleeve has a proximal end and a distal end. A controller couples to the flexible sleeve. The controller operates to move the flexible sleeve at least part way between the distal end of the guide element and the proximal end of the guide element. At least one ablation element disposed at the distal end of the flexible sleeve operates to form a substantially continuous ablative lesion when the flexible sleeve is in contact with a contiguous volume of target tissue. 120-. (canceled)21. A method of delivering an ablation therapy to target tissue including:extending a guide element having a proximal end and a distal end, the distal end configurable in a desired shape, through a cardiovascular system of a patient and into proximity with the target tissue;extending a flexible sleeve conformable to the guide element so that the flexible sleeve slides over the guide element, the flexible sleeve having a proximal end, a distal end, and at least one ablation element at the distal end of the flexible sleeve, the at least one ablation element operable to form an ablative lesion when the flexible sleeve is in contact with a contiguous volume of the target tissue; andconducting the ablation therapy by moving the flexible sleeve at least part way between the distal end of the guide element and the proximal end of the guide element.22. The method of claim 21 , wherein the guide element comprises one of a guide wire claim 21 , a mapping catheter claim 21 , and a preformed member configured into the desired shape.23. The method of claim 21 , further including stopping travel of the flexible sleeve via a ...

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Номер записи: 56

11-07-2019 дата публикации

DEVICE FOR MONITORING TEMPERATURES WITHIN AND ADJACENT TO BODY LUMENS

Номер: US20190209229A1

Автор: Babkin Alexei, Zira Zachary

Принадлежит:

A device for monitoring temperature adjacent to an ablation site, the device having an expandable component and a shaft that includes a lumen, at least one fluid port in communication with the lumen, and a plurality of flexible elements having a first end connected to the shaft and a second end having a temperature sensor mounted thereon. 141.-. (canceled)42. A device for monitoring temperature adjacent to a body lumen comprising:an expandable component; and a lumen;', 'at least one fluid port in communication with the lumen;', 'at least one paddle structure connected to the shaft; and', 'at least one temperature sensor mounted thereon., 'a shaft comprising43. The device of claim 42 , wherein the paddle structure comprises a frame structure and a film component44. The device of claim 42 , further comprising a motor to rotate the shaft.45. The device of claim 42 , wherein the temperature sensor is selected from the group comprising thermocouples claim 42 , Resistance Temperature Detectors (RTDs) and thermistors.46. The device of claim 42 , further comprising a plurality of paddle structures.47. The device of claim 43 , wherein the frame structure comprises a flexible material.48. The device of claim 43 , wherein the frame structure comprises nitinol.49. The device of claim 43 , wherein the film component is a flexible material.50. The device of claim 43 , wherein the flexible material is a plastic material.51. A device for monitoring temperature adjacent to a body lumen comprising:an expandable component; a lumen;', 'at least one fluid port in communication with the lumen;', 'at least one paddle structure connected to the shaft; and, 'a first shaft comprisinga second shaft surrounding at least a portion of the first shaft and having a gap formed between the first shaft and the second shaft, wherein the gap is for supplying a fluid to an interior of the expandable component; andat least one temperature sensor.52. The device of claim 51 , wherein the at least one ...

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Номер записи: 57

09-08-2018 дата публикации

MEDICAL DEVICE BALLOON

Номер: US20180221086A1

Автор: HANSON CASS A., Haverkost Patrick A., Horn Daniel J., LINDQUIST JEFFREY S., SUTERMEISTER DEREK C., Willard Martin R.

Принадлежит:

Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a catheter shaft. An expandable member may be coupled to the catheter shaft. The expandable member may be capable of shifting between a folded configuration and an expanded configuration. A plurality of flexible elements may be attached to the expandable member, with a plurality of electrode assemblies disposed on the flexible elements. The flexible elements may have a grooved substrate. 1. A method for treating a body lumen wall , the method comprising:placing a distal end of a catheter proximate to the body lumen wall, the distal end including an expandable member having a longitudinal axis and a body extending along the longitudinal axis, a plurality of flexible elements on the body of the expandable member, each flexible element including a substrate having a plurality of elongate grooves formed therein and at least one electrode assembly;expanding the expandable member to place one or more of the at least one electrode assembly in sufficient proximity to tissue of a portion of the body lumen wall, so as to allow energy to be transferred to the tissue; andenergizing each electrode assembly placed in proximity to the tissue, so as to apply energy sufficient to treat the tissue.2. The method of claim 1 , wherein at least a portion of the plurality of elongate grooves extend along the substrate at an angle from the longitudinal axis of the expandable member.3. The method of claim 1 , wherein the plurality of elongate grooves extends along the substrate in more than one direction.4. The method of claim 1 , wherein at least a portion of the plurality of elongate grooves are substantially parallel to each other.5. The method of claim 1 , wherein at least a portion of the plurality of elongate grooves defines a cross-hatched pattern.6. The method of claim 1 , wherein the plurality of elongate grooves extends over substantially the entire length of the ...

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Номер записи: 58

09-08-2018 дата публикации

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

Номер: US20180221622A1

Автор: Caplan Jay, FLAHERTY J. Christopher, Gardner Craig M., Rajagopalan Harith

Принадлежит: Fractyl Laboratories, Inc.

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

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Номер записи: 59

18-07-2019 дата публикации

Surgical instrument with contained dual helix actuator assembly

Номер: US20190216532A1

Автор: Barry C. Worrell, Jason R. Lesko

Принадлежит: Ethicon LLC

An apparatus comprises an end effector, an elongate shaft, and a handle assembly. The shaft includes an articulation section that is operable to deflect the end effector away from the longitudinal axis of the shaft. The handle assembly includes a rotary member positioned within an intermediate section of the handle assembly. The rotary member is rotatable about an axis that is parallel to the longitudinal axis of the shaft. The rotary member is operable to control the articulation section of the shaft. The rotary member may include opposing thread sections that simultaneously drive lead screws in opposite longitudinal directions, to thereby control the articulation section. The shaft may be rotatable relative to the handle assembly, and the apparatus may selectively lock or resist such rotation based on the articulation state of the articulation section.

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Номер записи: 60

16-08-2018 дата публикации

IN-JOINT SENSOR FOR A SURGICAL FLUID MANAGEMENT PUMP SYSTEM

Номер: US20180228947A1

Автор: Smith Justin, Woolford Brady

Принадлежит:

An in-joint pump and control device comprising a pump and an in-joint sensor. The pump is configured to convey fluid to a body joint surgical site. The pump has an algorithm associated therewith to make calculations and to assist in controlling the operation of the pump. The in-joint sensor is operatively associated with the pump by at least a communication member. The in-joint sensor comprises a sheath, an integration member attached to the sheath, a pressure sensor connected to the integration member, and a temperature sensor adjacent the sheath. The pressure sensor is adapted to provide pressure information to the pump via the communication member. The temperature sensor is also adapted to provide temperature information to the pump via the communication member. 1. An in-joint pump and control device comprising:a pump configured to convey fluid to a body joint surgical site, the pump having an algorithm associated therewith to make calculations and to assist in controlling the operation of the pump; andan in-joint sensor operatively associated with the pump by at least a communication member, the in-joint sensor comprising a sheath, a pressure sensor adjacent the sheath and configured to sense and provide information for calculating pressure based on a static column of fluid, and a temperature sensor adjacent the sheath,the pressure sensor adapted to provide the pressure information to the pump via the communication member, and the temperature sensor adapted to provide temperature information to the pump via the communication member.2. The in-joint pump and control device of claim 1 , wherein the communication member comprises a wireless transmitter.3. The in-joint pump and control device of claim 1 , wherein the sheath has a distal end claim 1 , and at least a portion of the temperature sensor is positioned adjacent the distal end of the sheath.4. The in-joint pump and control device of claim 1 , wherein the algorithm uses information received from the ...

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Номер записи: 61

06-11-2014 дата публикации

Ablation system, methods, and controllers

Номер: US20140330266A1

Автор: John B. Blix, Mark Allen Catron, Sara A. Thompson, Sukanya Varadharajan

Принадлежит: St Jude Medical Cardiology Division Inc

Multi-electrode ablation systems, methods, and controllers are described. In one example, a power supply is configured to be coupled to a plurality of electrodes. A controller includes a touchscreen display configured to display at least a graphical representation of each electrode of the ablation system. The controller is configured to receive an interactive input for each respective electrode to select and deselect the electrode for activation, during which power may be supplied thereto, by touching the graphical representation of the respective electrode on the touchscreen display. This may occur during a diagnostic mode and/or an ablation procedure run mode of the system.

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Номер записи: 62

09-09-2021 дата публикации

Methods of detecting and treating back pain

Номер: US20210275245A1

Автор: Avram Allan Edidin, Brian W. Donovan, Ray M. Baker, Samit Patel

Принадлежит: Relievant Medsystems Inc

Described herein are various implementations of systems and methods for accessing and modulating tissue (for example, systems and methods for accessing and ablating nerves or other tissue within or surrounding a vertebral body to treat chronic lower back pain). Assessment of vertebral endplate degeneration or defects (e.g., pre-Modic changes) to facilitate identification of treatment sites and protocols are also provided in several embodiments. Several embodiments comprise the use of biomarkers to confirm or otherwise assess ablation, pain relief, efficacy of treatment, etc. Some embodiments include robotic elements for, as an example, facilitating robotically controlled access, navigation, imaging, and/or treatment.

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Номер записи: 63

30-08-2018 дата публикации

MAPPING FORCE AND TEMPERATURE FOR A CATHETER

Номер: US20180242852A1

Автор: Beeckler Christopher Thomas, Govari Assaf

Принадлежит: Biosense Webster (Israel) Ltd.

A method for displaying information, including receiving measurements, with respect to an invasive probe inside a body of a subject, of probe parameters consisting of a force exerted by the probe on tissue of the subject and temperatures measured by sensors of the probe. The method further includes, responsively to the measurements, displaying in a single map on a display screen a graphical representation of a distribution of the temperatures in a vicinity of the probe and superimposing thereon a vector representation of the force. 1. A method for displaying information , comprising:receiving measurements, with respect to an invasive probe inside a body of a subject, of probe parameters comprising a force exerted by the probe on tissue of the subject and temperatures measured by sensors of the probe; andresponsively to the measurements, displaying in a single map on a display screen a graphical representation of a distribution of the temperatures in a vicinity of the probe and superimposing thereon a vector representation of the force.2. The method according to claim 1 , wherein the vector representation comprises a first indication of a magnitude of the force and a second indication of a force-direction of the force.3. The method according to claim 2 , wherein the vector representation comprises an arrow claim 2 , and wherein the first indication comprises a width of the arrow claim 2 , and wherein the second indication comprises a combination of a length of the arrow and a direction of the arrow.4. The method according to claim 2 , wherein the vector representation comprises an arrow and a text box associated therewith claim 2 , and wherein the first indication comprises text within the text box claim 2 , and wherein the second indication comprises a combination of a length of the arrow and a direction of the arrow.5. The method according to claim 2 , wherein the vector representation comprises a first circle having a first center claim 2 , and wherein the ...

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Номер записи: 64

20-09-2018 дата публикации

DEVICE AND METHODS FOR RENAL NERVE MODULATION MONITORING

Номер: US20180263691A1

Автор: JENSON MARK L., RICHARDSON LEONARD B., Smith Scott R.

Принадлежит:

Systems and methods for monitoring and performing tissue modulation are disclosed. An example system may include an elongate shaft having a distal end region and a proximal end and having at least one modulation element and one sensing electrode disposed adjacent to the distal end region. The sensing electrode may be used to determine and monitor changes in tissue adjacent to the modulation element. 1. A treatment system , comprising:an elongate shaft having a proximal end region and a distal end region;at least one treatment element disposed adjacent the distal end region; andone or more sensing electrodes disposed adjacent the distal end region;wherein the one or more sensing electrodes are configured to monitor impedance of a surrounding tissue;wherein the at least one treatment element is operated at a first frequency to treat a region of tissue; andwherein the one or more sensing electrodes are operated at a second frequency different from the first frequency.2. The system of claim 1 , wherein the one or more sensing electrodes comprise a first sensing electrode disposed proximal of the at least one treatment element and a second sensing electrode disposed distal of the at least one treatment element.3. The system of claim 2 , wherein the first sensing electrode and the second sensing electrode are positioned symmetrically about the at least one treatment element.4. The system of claim 1 , further comprising a control unit electrically connected to the at least one treatment element and the one or more sensing electrodes by separate electrical conductors.5. The system of claim 2 , wherein the surrounding tissue being monitored is between the first sensing electrode and the second sensing electrode claim 2 , and current passing between the first sensing electrode and the second sensing electrode is used to determine an impedance of the surrounding tissue.6. The system of claim 5 , wherein the surrounding tissue being monitored includes the region of tissue being ...

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Номер записи: 65

29-09-2016 дата публикации

Method for Treating the Thoracic Region of a Patient's Body

Номер: US20160278846A1

Автор: Amy Lefler, Neil Godara, Robert Harrison

Принадлежит: Avent Inc

A method is disclosed for the treatment of a thoracic region of a patient's body. Embodiments of the method comprise positioning an energy delivery portion of an electrosurgical device to face a segment of a thoracic vertebra at a distance from the segment; and cooling the energy delivery portion and delivering energy through the energy delivery portion.

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Номер записи: 66

29-09-2016 дата публикации

Mesh-overlayed ablation and mapping device

Номер: US20160278858A1

Автор: Jordon D. Honeck, Mark T. Stewart

Принадлежит: MEDTRONIC ABLATION FRONTIERS LLC

A medical system, including a catheter body, an elongate body disposed in the catheter body; an expandable element having a proximal portion coupled to the catheter body and a distal portion coupled to the elongate body, the distal portion of the expandable element defining the distal-most portion of the medical device; a mesh or array of longitudinal splines substantially surrounding the expandable element, at least a portion of the mesh or splines being electrically conductive; and a coolant source in fluid communication with the expandable element.

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Номер записи: 67

18-12-2014 дата публикации

Electrosurgical instrument end effector with preheating element

Номер: US20140371735A1

Автор: Gary L. Long

Принадлежит: Ethicon Endo Surgery Inc

A surgical instrument includes a handpiece, an elongate shaft extending distally from the handpiece, an end effector disposed at a distal end of the elongate shaft, and a firing beam. The end effector has a first jaw and a second jaw. The first jaw is pivotable toward and away from the second jaw to capture tissue. The end effector further comprises a preheating element and an electrode. The preheating element is configured to provide heat to the captured tissue, thereby increasing electrical conductivity of the tissue. The electrode is configured to seal the captured-preheated tissue by providing RF energy to the tissue. The firing beam is configured to sever the sealed tissue.

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Номер записи: 68

06-10-2016 дата публикации

Ablation devices, systems and methods of using a high-resolution electrode assembly

Номер: US20160287328A1

Автор: Dorin Panescu, Josef Vincent Koblish

Принадлежит: Advanced Cardiac Therapeutics Inc

According to some embodiments, an ablation device comprises an elongate body (e.g., a catheter) having a proximal end and a distal end, a first electrode (e.g., a radiofrequency electrode) positioned at the distal end of the elongate body, at least a second electrode (e.g., a radiofrequency electrode) positioned at a location proximal to the first electrode, the first electrode and the second electrode being configured to contact tissue of a subject and deliver radiofrequency energy sufficient to at least partially ablate the tissue, at least one electrically insulating gap positioned between the first electrode and the second electrode and a filtering element configured to present a low impedance at a frequency used for delivering ablation energy via the first and second electrodes.

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Номер записи: 69

27-08-2020 дата публикации

Methods of removing heat from an electrode using thermal shunting

Номер: US20200268443A1

Автор: Dorin Panescu, Eric Andrew SCHULTHEIS, Josef Vincent Koblish

Принадлежит: Epix Therapeutics Inc

According to some embodiments, a medical instrument (for example, an ablation device) comprises an elongate body having a proximal end and a distal end, an energy delivery member positioned at the distal end of the elongate body, a first plurality of temperature-measurement devices carried by or positioned within the energy delivery member, the first plurality of temperature-measurement devices being thermally insulated from the energy delivery member, and a second plurality of temperature-measurement devices positioned proximal to a proximal end of the energy delivery member, the second plurality of temperature-measurement devices being thermally insulated from the energy delivery member.

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Номер записи: 70

22-10-2015 дата публикации

DEVICES AND METHODS FOR THERAPEUTIC HEAT TREATMENT

Номер: US20150297292A1

Автор: Anderson James M., Hanson Cass Alexander, Haverkost Patrick A., Kronstedt Joseph Alan, LINDQUIST JEFFREY S., OSTROOT TIMOTHY A., SUTERMEISTER DEREK C., Weber Jan, Willard Martin R.

Принадлежит: BOSTON SCIENTIFIC SCIMED, INC.

Methods and devices (e.g., for nerve modulation) may include at least one thermistor and a balloon having a balloon wall. In one or more embodiments, the medical device is configured and arranged to transfer heat to the medical device surroundings. In one or more embodiments, the at least one thermistor is a portion of a thermistor array disposed on the balloon wall, the thermistor array including a plurality of thermistors and operatively engaged with a source of electric current. In one or more embodiments, the device includes at least one flexible circuit mounted on the outer surface of the expandable balloon, the at least one flexible circuit including at least one temperature-sensing device that includes at least one thermistor, wherein at least a portion of a conductive layer is electronically coupled to the thermistor, with the proviso that no electrode is associated with the conductive layer. 1. A medical device for nerve modulation , the medical device comprising:an elongate shaft having a proximal end region and a distal end region;an expandable device positioned adjacent to the distal end region of the elongate shaft; andat least one thermistor array disposed on an outer surface of the expandable device, the at least one thermistor array comprising at least two thermistors and being operatively engaged with a source of electric current, each of the at least two thermistors having a resistance that varies with temperature.2. The medical device of claim 1 , wherein the expandable device comprises an expandable balloon.3. The medical device of claim 1 , wherein the expandable device comprises an expandable basket.4. The medical device of claim 1 , wherein the at least one thermistor array operatively engaged with a source of electric current comprises a first wire extending from the source of electric current to the at least one thermistor array and a second wire extending from the at least one thermistor array to a ground.5. The medical device of claim 1 , ...

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Номер записи: 71

22-10-2015 дата публикации

Methods and radiofrequency treatment probe for treating vaginal laxity

Номер: US20150297908A1

Автор: Kevin D. Obrien, Paul R Herchman, JR., Red Alinsod

Принадлежит: Thermigen LLC

The invention comprises a treatment probe and method delivering radiofrequency stimulation for controlled heating of tissue within the vagina to treat vaginal laxity. The treatment probe includes a rounded disposable treatment tip to accommodate the anatomy of the vagina which is coupled with an electrode assembly, both of which are assembled to transfer radiofrequency energy to vaginal surface and subsurface. The treatment tip includes a skin temperature sensor that monitors skin temperature to maintain a pre-set treatment temperature; the entire assembly is connected to a reusable treatment probe handle and radiofrequency generator.

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Номер записи: 72

26-10-2017 дата публикации

FLEXIBLE POLYMER ELECTRODE FOR MRI-GUIDED POSITIONING AND RADIO FREQUENCY ABLATION

Номер: US20170303997A1

Автор: Heimbecher Reed R., Paul Saurav, STEHR Richard E., Tegg Troy T.

Принадлежит:

An electrode for use on a medical device is disclosed. The electrode may have a main body of electrically conductive material extending along an axis and may have a proximal end and a distal end. The electrode may also include a magnetic resonance imaging (MRI) tracking coil disposed in the body. The MRI tracking coil may comprise electrically insulated wire. A catheter including an electrode, as well as a method for determining the location of an electrode, are also disclosed. 1. An electrode for use on a medical device comprising:a main body of electrically conductive material extending along an axis and having a proximal end and a distal end; anda magnetic resonance imaging (MRI) tracking coil disposed in said main body, said tracking coil comprising electrically insulated wire.2. The electrode of claim 1 , wherein said body has a lumen and said MRI tracking coil is disposed in said lumen.3. The electrode of claim 2 , wherein said lumen comprises a blind bore opening toward said proximal end of said body.4. The electrode of claim 1 , wherein said body comprises a polymer.5. The electrode of claim 4 , wherein said polymer comprises silicone material.6. The electrode of claim 4 , wherein said body has electrically conductive particles dispersed therein at a predefined density to achieve a desired electrical conductivity.7. The electrode of claim 6 , wherein said particles comprise gold claim 6 , silver claim 6 , platinum claim 6 , iridium claim 6 , titanium claim 6 , tungsten claim 6 , or a combination thereof.8. The electrode of claim 6 , wherein said particles comprise a material with a magnetic susceptibility less than about 1×10.9. The electrode of claim 1 , further comprising an electrical conductor having a first end coupled to said body and a second end configured for connection to an energy source.10. The electrode of claim 1 , wherein said body is electrically coupled to a radio frequency ablation generator.11. The electrode of claim 9 , wherein said ...

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Номер записи: 73

02-11-2017 дата публикации

Pulsed radiofrequency ablation

Номер: US20170312008A1

Автор: Doron Harlev

Принадлежит: Affera Inc

Ablation systems and methods of the present disclosure are directed toward delivering pulsed radiofrequency (RF) energy to target tissue. The pulsations of the RF energy, combined with cooling at a surface of the target tissue, can advantageously promote local heat transfer in the target tissue to form lesions having dimensions larger than those that can be safely formed in tissue using non-pulsed RF energy under similar conditions.

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Номер записи: 74

10-11-2016 дата публикации

Treatment adjustment based on temperatures from multiple temperature sensors

Номер: US20160324575A1

Автор: Dorin Panescu, Eric Andrew SCHULTHEIS, Jessi E. Johnson, Josef Vincent Koblish

Принадлежит: Advanced Cardiac Therapeutics Inc

According to some embodiments, a medical instrument (for example, an ablation device) comprises an elongate body having a proximal end and a distal end, an energy delivery member positioned at the distal end of the elongate body, a first plurality of temperature-measurement devices carried by or positioned within the energy delivery member, the first plurality of temperature-measurement devices being thermally insulated from the energy delivery member, and a second plurality of temperature-measurement devices positioned proximal to a proximal end of the energy delivery member, the second plurality of temperature-measurement devices being thermally insulated from the energy delivery member.

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Номер записи: 75

01-10-2020 дата публикации

FLEXIBLE CIRCUIT HAVING IMPROVED ADHESION TO A RENAL NERVE MODULATION BALLOON

Номер: US20200305973A1

Автор: Cao Hong, Gupta Ajay, HANSON CASS A., LARSON KENNETH R., LINDQUIST JEFFREY S., Miller Paul J., QUILLIN DANIEL T.

Принадлежит:

A balloon for renal nerve modulation is disclosed. The balloon may include a polymer material forming a balloon wall having an outer surface and flexible circuits comprising a base selectively adhered to the exterior surface of the balloon wall. Adhesive is selectively applied to the outer surface of the balloon, to the flexible circuit or to both such that the adhesive is selectively deposited on the at least a portion of the at least two pads or on the at least a portion of the at least two pads and to a portion of the distal spline. The portion of the at least two pads or the portion of the at least two pads and a portion of the distal spline are adhered to the outer surface of the balloon and a remainder of the flexible circuit moves freely with respect to the outer surface of the balloon. 1. A balloon comprising:a balloon wall comprising an outer surface; anda flexible circuit disposed on the outer surface of the balloon wall, the flexible circuit comprising a base formed of a polymer material;wherein the base comprises patterned deformations comprising lines that are substantially perpendicular to an edge of the base; andwherein the outer surface of the balloon wall comprises patterned deformations comprising lines, at least portion of the lines of the outer surface of the balloon wall complimenting at least a portion of the lines of the patterned deformations of the base.2. The balloon of claim 1 , wherein the edge of the base includes at least one curve and the patterned deformations of the base include at least one end of at least one line perpendicular to the edge at the at least one curve.3. The balloon of claim 1 , wherein each of the lines of the patterned deformations of the base extend across a longitudinal axis of the flexible circuit.4. The balloon of claim 1 , wherein the patterned deformations of the base and the patterned deformations of the outer surface of the balloon wall each comprise laser induced micro patterns.5. The balloon of claim 1 , ...

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Номер записи: 76

10-10-2019 дата публикации

CATHETER STABILITY INDICATION

Номер: US20190307526A1

Автор: Berger Abraham, Botzer Lior, Peri Eitan

Принадлежит:

A probe having a temperature sensor on its distal portion is introduced into a fluid-filled body cavity of a subject, and an irrigating fluid passed through the probe. The temperature of the irrigating fluid exiting the probe differs from the temperature of the body cavity. Temperature readings of the irrigating fluid exiting the probe are recorded. A determination is made from the temperature readings that predetermined contact criteria between the probe and the interior wall of the body cavity are satisfied. 1. A method , comprising the steps of:introducing a probe into a fluid-filled body cavity of a subject, the fluid-filled body cavity having a temperature, the probe having a temperature sensor on a distal portion of the probe thereon, the body cavity having an interior wall;passing an irrigating fluid through the probe, wherein the irrigating fluid exits the probe at the distal portion into the body cavity, and wherein a temperature of the irrigating fluid is different from the temperature of the body cavity;while passing the irrigating fluid, recording temperature readings of the temperature sensor;making a determination from the temperature readings that predetermined contact criteria between the probe and the interior wall of the body cavity are satisfied; andthereafter alerting an operator that the contact criteria are satisfied.2. The method according to claim 1 , wherein passing the irrigating fluid is performed multiple times at different flow rates.3. The method according to claim 2 , further comprising deriving a blood temperature and an irrigation fluid temperature from the temperature readings at the respective different flow rates of the irrigating fluid.4. The method according to claim 1 , wherein the contact criteria comprise criteria for stable contact between the probe and the interior wall of the body cavity.5. The method according to claim 1 , wherein the contact criteria comprise criteria for unstable contact between the probe and the ...

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Номер записи: 77

26-11-2015 дата публикации

Methods And Devices For Treating Pelvic Conditions

Номер: US20150335381A1

Автор: Edwin J. Hlavka, Eric Whitbrook, John Christian KNUDSON, Thomas V. Ressemann

Принадлежит: Amphora Medical Inc

A device and method that provides a minimally-invasive approach to performing treatments on soft tissue, such as that found in the bladder. The device is useful for manipulating tissue such that treatment tools can be inserted into the tissue at a controlled depth.

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Номер записи: 78

16-11-2017 дата публикации

DEVICE AND METHODS FOR RENAL NERVE MODULATION MONITORING

Номер: US20170325881A1

Автор: JENSON MARK L., RICHARDSON LEONARD B., Smith Scott R.

Принадлежит:

Systems and methods for monitoring and performing tissue modulation are disclosed. An example system may include an elongate shaft having a distal end region and a proximal end and having at least one modulation element and one sensing electrode disposed adjacent to the distal end region. The sensing electrode may be used to determine and monitor changes in tissue adjacent to the modulation element. 1. A nerve modulation system , comprising:an elongate shaft having a proximal end region and a distal end region;a nerve modulation element disposed adjacent the distal end region;one or more sensing electrodes disposed adjacent to the distal end region;wherein the one or more sensing electrodes are configured to monitor impedance of a surrounding region; andwherein the nerve modulation element is operated at a first frequency, and wherein the one or more sensing electrodes are operated at a second frequency different from the first frequency.2. The system claim 1 , wherein the one or more sensing electrodes comprise a first sensing electrode disposed proximal of the nerve modulation element and a second sensing electrode disposed distal of the nerve modulation element.3. The system of claim 2 , wherein the first sensing electrode and the second sensing electrode are positioned symmetrically about the nerve modulation element.4. The system of claim 1 , further comprising a control unit electrically connected to the nerve modulation element and the one or more sensing electrodes.5. The system of claim 4 , wherein the nerve modulation element and the one or more sensing electrodes are electrically connected to the control unit by separate electrical conductors.6. The system of claim 1 , wherein the nerve modulation element is an electrode.7. The system of claim 1 , wherein the nerve modulation element is configured to perform circumferential ablation.8. The system of claim 1 , wherein the second frequency is varied to determine more than one impedance value of a region of ...

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Номер записи: 79

23-11-2017 дата публикации

APPARATUS FOR EFFECTIVE ABLATION AND NERVE SENSING ASSOCIATED WITH DENERVATION

Номер: US20170332926A1

Автор: Almany Steven, FISCHELL DAVID R., FISCHELL TIM A., Ghazarossian Vartan, John Michael Sasha

Принадлежит:

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. 121-. (canceled)22. A method of treating hypertension , comprising:positioning a distal portion of a denervation catheter within a renal artery of a human patient;advancing at least two needle guiding elements outward from the catheter toward an inside surface of the renal artery;advancing at least a first conducting injection needle and a second conducting injection needle through the first and second needle guiding elements and into a peri-vascular space outside of the inside surface of the renal artery;operating the catheter to provide at least one modality of neurolysis to sympathetic nerves located in the peri-vascular space; andsensing nerve activity from at least one of the first and second conducting injection needles from locations outside of the renal artery.23. The method of treating hypertension as in claim 22 , wherein the at least one modality of ablation includes injecting an ablative fluid through the first and second conducting injection needles to form ...

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Номер записи: 80

23-11-2017 дата публикации

CRYOGENIC ABLATION SYSTEM WITH ROTATABLE AND TRANSLATABLE CATHETER

Номер: US20170333105A1

Автор: Burke Dennis Franklin, Chun Byron Liehwah, Holland Timothy Douglas, Ico Cesar A., Newell Gabriel F.W., Wu Patrick P.

Принадлежит: C2 Therapeutics, Inc.

An ablation assembly includes a handle, a catheter assembly and a connector locking assembly. The catheter assembly includes: a catheter shaft, a balloon and a connector at the distal and proximal ends of the catheter shaft, and a delivery tube extending between there between. The connector includes a connector body secured to the proximal end and a plug secured to the delivery tube, the plug and delivery tube movable axially and rotationally. The handle includes an open portion receiving the plug and the connector body. The connector locking assembly includes: means for simultaneously automatically connecting the plug and the connector body to the handle to place the connector in a load state prior to use, and means for automatically releasing the connector body and thereafter the plug from the handle to place the connector in an eject state to permit the connector to be removed from the handle. 1. An ablation assembly comprising:a control assembly comprising a handle assembly , a controller, and a user control assembly coupled to the controller, the handle assembly comprising a first connector element; a catheter shaft having proximal and distal ends and a catheter shaft lumen extending between the proximal and distal ends;', 'a connector at the proximal end of the catheter shaft selectively connected to the first connector element of the handle assembly, the connector comprising a connector body and a second connector element, the first and second connector elements being mating connector elements;', 'an expandable and collapsible balloon mounted to the distal end of the catheter shaft, the balloon having an inner surface defining a balloon interior;', a delivery tube housed within the catheter shaft for axial and rotational movement relative to the catheter shaft, the delivery tube having a proximal end connected to the second connector element; and', 'a diffuser, within the balloon, fluidly coupled to the delivery tube; and, 'a delivery tube assembly comprising ...

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Номер записи: 81

30-11-2017 дата публикации

SYSTEMS AND METHODS FOR TREATING TISSUE WITH RADIOFREQUENCY ENERGY

Номер: US20170340382A1

Автор: GREEN Ronald L., Radziunas Jeffrey, Shikhman Oleg

Принадлежит: Mederi Therapeutics, Inc.

A system for controlling operation of a radiofrequency treatment device to apply radiofrequency energy to tissue to treat tissue to create lesions without ablating the tissue. The system includes a first treatment device having a plurality of electrodes. The electrodes are maintained in axial alignment and fixed radial spacing in retracted and extended positions. The device includes a basket having a plurality of arms. The arms are maintained in a fixed radial spacing in the collapsed position of the basket. 116-. (canceled)17. A method of treating tissue by applying non-ablative radiofrequency energy comprising the steps of:a. providing a device having a plurality of electrodes movable between a retracted position and an advanced position, the plurality of electrodes having structure to maintain an equidistant radial spacing and to maintain longitudinal alignment of penetrating tips of the electrodes in the retracted position;b. inserting the device into a sphincter of a patient;c. advancing the electrodes to penetrate sphincter tissue at a first location, the electrodes having penetrating tips longitudinally aligned in the advanced position and further being equidistantly radially spaced in the advanced position;d. applying radio frequency energy to the electrodes to apply radiofrequency energy to tissue in a first area of the penetrating tips of the electrodes, the radiofrequency energy applied so a minimum distance is maintained between regions of sphincter tissue treated by the electrodes;e. retracting the electrodes within the device;f. rotating the device to a second position;g. advancing the electrodes from the device so that the penetrating tips penetrate sphincter tissue at a second location, the penetrating tips of the electrodes being longitudinally aligned and maintained in an equidistant radial spacing; andh. applying radiofrequency energy to the electrodes to apply radiofrequency energy to sphincter tissue in a second area of the penetrating tips of ...

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Номер записи: 82

22-10-2020 дата публикации

Handpiece assembly for laser treatment device

Номер: US20200330184A1

Автор: Dmitri Boutoussov, Rolf G. Kojima

Принадлежит: Biolase Inc

Embodiments of the invention include a handpiece system including a detachable cable that can receive at least power, and a detachable cable connector, where the detachable cable connector and detachable cable are reversibly attachable to each other. In some embodiments, the system includes an interchangeable laser module, where the laser module and detachable cable connector are reversibly attachable to each other. Further, the interchangeable laser module is configured and arranged to receive at least the power via the cable connector when coupled to the cable connector, and to be removed from the detachable cable connector and replaced with another laser module. In some embodiments, the system further includes an interchangeable handpiece which is reversibly attachable to the interchangeable laser module. Further, the interchangeable handpiece is configured and arranged to be removed from the interchangeable laser module and replaced with another interchangeable handpiece.

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Номер записи: 83

07-12-2017 дата публикации

DEVICE AND METHODS FOR RENAL NERVE MODULATION MONITORING

Номер: US20170348048A9

Автор: JENSON MARK L., RICHARDSON LEONARD B., Smith Scott R.

Принадлежит:

Systems and methods for monitoring and performing tissue modulation are disclosed. An example system may include an elongate shaft having a distal end region and a proximal end and having at least one modulation element and one sensing electrode disposed adjacent to the distal end region. The sensing electrode may be used to determine and monitor changes in tissue adjacent to the modulation element. 2. The system of claim 1 , wherein the one or more sensing electrodes comprise a first sensing electrode disposed proximal of the nerve modulation element and a second a second sensing electrode disposed distal of the nerve modulation element.3. The system of claim 2 , wherein the first sensing electrode and the second sensing electrode are positioned symmetrically about the nerve modulation element.4. The system of claim 1 , further comprising a control unit electrically connected to the nerve modulation element and the one or more sensing electrodes.5. The system of claim 4 , wherein the nerve modulation element and the one or more sensing electrodes are electrically connected to the control unit by separate insulated electrical conductors.6. The system of claim 1 , wherein the nerve modulation element is an electrode.7. The system of claim 1 , wherein the nerve modulation element is configured to perform circumferential ablation.8. A nerve modulation system claim 1 , comprising:a control unit;an elongate shaft having a proximal end region and a distal end region;an ablation electrode disposed adjacent to the distal end region of the elongate shaft;a first sensing electrode configured to monitor impedance, the first sensing electrode disposed on the elongate shaft spaced a distance from the ablation electrode;a ground pad;wherein the ablation electrode, the first sensing electrode, and the ground pad are electrically connected to the control unit.9. The nerve modulation system of claim 8 , wherein the first sensing electrode is configured to measure a voltage of a ...

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Номер записи: 84

07-12-2017 дата публикации

METHODS AND APPARATUSES FOR REMODELING TISSUE OF OR ADJACENT TO A BODY PASSAGE

Номер: US20170348529A9

Автор: MATHUR PRABODH, MOADDEB SHAHRAM

Принадлежит:

Medical devices and methods for making and using the same are disclosed. An example method may include a method for treating a patient having congestive heart failure. The method may include positioning an expandable balloon in a renal artery of the patient. The expandable balloon may include a plurality of electrode assemblies. At least some of the electrode assemblies each may include at least two bipolar electrode pairs. The two bipolar electrode pairs may be longitudinally and circumferentially offset from one another. The method may also include expanding the balloon in the renal artery such that at least some of the bipolar electrode pairs are electrically coupled to a wall of the renal artery and energizing at least some of the bipolar electrode pairs so as to therapeutically alter at least one nerve proximate the renal artery to treat the patient's congestive heart failure. 1. A method for treating a patient having high blood pressure , the method comprising: (i) a catheter;', '(ii) an expandable balloon coupled to the catheter and including an outer surface; and', '(iii) at least one flexible circuit mounted on the outer surface of the expandable balloon, including: (1) a first insulating layer, (2) at least one heat sensing device positioned at least partially within the first insulating layer, (3) a conductive layer above the first insulating layer, at least a portion of which is electrically coupled to the heat sensing device, (4) a second insulating layer above the conductive layer, and (5) at least one electrode associated with the conductive layer;, '(a) advancing a medical device through a blood vessel to a position within a renal artery, the medical device comprising(b) expanding the balloon in a renal artery of the patient;(c) driving energy through the at least one electrode so as to therapeutically alter at least one nerve proximate the renal artery such that the high blood pressure of the patient is mitigated.2. The method of claim 1 , wherein ...

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Номер записи: 85

14-12-2017 дата публикации

Ablation system, methods, and controllers

Номер: US20170354454A1

Автор: Catherine A. Pipenhagen, James C. Baker, John B. Blix, John Eric Hein, Joseph Allen Brotz, Joseph William Barnier, Kevin K. Ennett, Michael Olsen, Raymond Vincent Froehlich, Sukanya Varadharajan

Принадлежит: Plexu Corp, St Jude Medical Cardiology Division Inc

Multi-electrode ablation systems, methods, and controllers are described. In one example, a method of beginning an ablation procedure using a multi-electrode ablation system is described. The method includes selectively coupling the output of a power supply to a first electrode of a plurality of electrodes to increase a temperature at the first electrode to a first temperature set-point and limit a rate of increase of the temperature at the first electrode to a predetermined first rate.

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Номер записи: 86

21-12-2017 дата публикации

METHODS AND SYSTEMS FOR OCCLUDING VESSELS DURING CARDIAC ABLATION INCLUDING OPTIONAL ELECTROANATOMICAL GUIDANCE

Номер: US20170360448A1

Автор: "dAvila Andre", Christian Steven C., Kauphusman James V., Puryear Harry A., Reddy Vivek, Sutton William M.

Принадлежит:

A method is provided for ablating a portion of the myocardium. The method includes inserting an occlusion catheter into a vessel on a heart, occluding the vessel using the occlusion catheter, inserting an ablation catheter into a chamber of the heart, positioning the ablation catheter against the myocardium, and ablating a portion of the myocardium while the vessel is occluded. The system includes an occlusion catheter having a catheter body including a tubular member having a distal portion and a bend located in the distal portion, a balloon located proximal of the bend and configured to contact an inner surface of the CS when positioned therewithin, a plurality of marker bands positioned on the catheter body, and a plurality of electrodes positioned on the catheter body. One or more electrodes or coils can be used as a reference for an electroanatomical system and can be disposed on the occlusion catheter. 121-. (canceled)22. A method for ablating a portion of an atrium of a heart using non-cryogenic energy in the portion , said method comprising:inserting an occlusion catheter into a vessel on or in the heart;occluding a section of the vessel using the occlusion catheter, wherein the occluded vessel section and the portion of the atrium share and are separated by an intervening myocardial wall;inserting an ablation catheter into the atrium;positioning the ablation catheter against an inner surface of the intervening myocardial wall; andtransmitting non-cryogenic energy in the portion of the atrium to ablate the portion of the atrium while the vessel section is occluded.23. The method of wherein inserting the occlusion catheter comprises inserting the occlusion catheter into a coronary sinus.24. The method of wherein occluding the portion of the vessel comprises inflating a balloon on the occlusion catheter to occlude the portion of the vessel.25. The method of wherein ablating the portion of the atrium comprises one of: creating a mitral isthmus ablation line ...

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Номер записи: 87

20-12-2018 дата публикации

Methods and Devices for Treating Pelvic Conditions

Номер: US20180360530A1

Автор: Hlavka Edwin J., Knudson John Christian, Ressemann Thomas V., Whitbrook Eric

Принадлежит: Amphora Medical, Inc.

A device and method that provides a minimally-invasive approach to performing treatments on soft tissue, such as that found in the bladder. The device is useful for manipulating tissue such that treatment tools can be inserted into the tissue at a controlled depth. 1a handle assembly at a proximal end;a suction head at a distal end;an elongate shaft portion between the handle assembly and the suction head;wherein said elongate shaft portion comprises at least one cannula channel, a suction channel and a scope channel;at least one electrode set slidably associated with one of the at least one cannula channels and including an electrode and a cannula and slidable between a first position and a second position, wherein in the first position, a distal end of the cannula is contained within the associated cannula channel and wherein in the second position, the distal end of the cannula extends from the distal end of the associated cannula channel, proximate the suction head.. An elongate instrument comprising: This application claims benefit of and priority to U.S. Provisional Application Ser. No. 62/002,742 filed May 23, 2014 entitled Method And Device For Treating Pelvic Conditions, which is related to U.S. patent application Ser. No. 14,030,869 filed Sep. 18, 2013 entitled Apparatus And Methods To Modulate Pelvic Nervous Tissue; U.S. patent application Ser. No. 14/285,627 filed May 22, 2014 entitled Apparatus And Methods To Modulate Pelvic Nervous Tissue; U.S. patent application Ser. No. 14/030,905 filed Sep. 18, 2013 entitled Apparatus And Methods To Modulate Bladder Function; and U.S. Provisional Patent Application No. 61,935,753 filed Feb. 4, 2014 entitled Devices And Methods For Treating Conditions Caused By Affarent Nerve Signals, all of which are hereby incorporated by reference herein in their entireties.Urinary incontinence (UI) is the involuntary leakage of urine. There are several types of urinary incontinence, including urge urinary incontinence (UUI) and ...

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Номер записи: 88

08-03-2016 дата публикации

Electrosurgical devices and methods

Номер: US9277957B2

Автор: David N. Plescia, Gary L. Long, Gregory J. Bakos, Peter K. Shires, William J. Bowers

Принадлежит: Ethicon Endo Surgery Inc

An electrosurgical system may generally first and second electrodes coupled to an energy source operative to generate and deliver pulses of a biphasic radio frequency (RF) waveform to treat undesirable tissue in a patient. The pulses may induce non-thermal cell death in the patient's tissue while causing no or minimal muscle contractions in the treated patient. The pulses may be grouped in bursts wherein the pulses within a burst repeat at a particular pulse frequency.

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Номер записи: 89

17-10-2017 дата публикации

Electrosurgical system energy source

Номер: US9788885B2

Автор: David N. Plescia, Gary L. Long, Gregory J. Bakos

Принадлежит: Ethicon Endo Surgery Inc

An energy source for use with an electrosurgical system is disclosed. In one embodiment, the energy source includes a power supply, one or more capacitors coupled to the power supply, and a switching component coupled to the one or more capacitors. The switching component is configured to output pulses of a biphasic waveform. The pulses are capable of treating undesired tissue by inducing a change in voltage potential across cell membranes of a plurality of cells in the undesired tissue to promote non-thermal cell death in the plurality of cells. The pulses are also capable of treating the undesired tissue with no or minimal muscle contractions in patient tissue within reach of the biphasic waveform during treatment of the undesired tissue.

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Номер записи: 90

09-07-2019 дата публикации

Electrosurgical system for delivering a biphasic waveform

Номер: US10342598B2

Автор: David N. Plescia, Gary L. Long, Gregory J. Bakos

Принадлежит: Ethicon LLC

An electrosurgical system is disclosed including an energy source and a plurality of electrodes. Each of the plurality of electrodes is coupled to the energy source and each of the plurality of electrodes is positionable for electrical contact with a target tissue. The energy source is configured to deliver, via the plurality of electrodes, a plurality of pulses of a biphasic radio frequency (RF) waveform to the target tissue. The biphasic RF waveform operates at a fundamental frequency greater than that which electrically stimulates muscular cells. The plurality of pulses induce non-thermal cell death in the target tissue without a measurable stimulation in muscular tissue exposed to the biphasic RF waveform.

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Номер записи: 91

07-09-2010 дата публикации

Method and apparatus for positioning a catheter relative to an anatomical junction

Номер: US7789876B2

Автор: Arthur W. Zikorus, Brian E. Farley, Christopher S. Jones, James G. Chandler, Ralph G. DePalma

Принадлежит: TYCO HEALTHCARE GROUP LP

An electrode catheter is introduced into a vein or other hollow anatomical structure, and is positioned at a treatment site within the structure. The end of the catheter is positioned near a junction formed in the structure. This junction can be the sapheno-femoral junction. The position of the catheter near the junction is determined based on a signal from a device associated with the catheter within the structure. A fiber optic filament which emits light is used with the catheter or a guide wire over which the catheter is advanced. The light is visible externally from the patient. The light dims and may no longer externally visible at the sapheno-femoral junction where the catheter moves past the deep fascia and toward the deep venous system. The position of the catheter can be determined based on this external observation. The position of the catheter can also be determined based on measured parameters such as temperature or flow rate within the structure, and the measured changes in one or more of these parameters as the catheter nears the junction. The hollow anatomical structure can be compressed for this procedure. The position of the catheter can also be determined mechanically by including a hook-shaped tip on the catheter or guide wire which would physically engage the junction.

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Номер записи: 92

16-02-2016 дата публикации

Surgical instruments for tensioning tissue

Номер: US9259265B2

Автор: Foster B. Stulen, Gregory W. Johnson, Jason L. Harris, Jeffrey S. Swayze, Paul Guerra, Prasanna Malaviya

Принадлежит: Ethicon Endo Surgery LLC

A surgical instrument can comprise an end effector including a plurality of jaws which can be configured to compress tissue therebetween. The end effector can further comprise one or more electrodes which can be configured to direct a flow of electrical current through the tissue in order to heat the tissue and denature collagen and/or other proteins within the tissue. As the tissue cools, the collagen and/or other proteins can renature and thereby seal the tissue. In certain embodiments, the end effector of the surgical instrument can further comprise movable portions which can apply a tension force to the tissue surrounding the tissue being sealed. In various circumstances, the tension force can reduce the over-denaturation, shrinkage, and/or other damage to the surrounding tissue caused by heat flowing from the end effector during the sealing process.

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Номер записи: 93

11-02-2020 дата публикации

Flexible circuits for electrosurgical instrument

Номер: US10555769B2

Автор: Barry C. Worrell, David C. Yates, Geoffrey S. Strobl, Joseph D. Dennis, Mark A. Davison

Принадлежит: Ethicon LLC

The disclosure provides a method of manufacturing a flexible circuit electrode assembly and an apparatus manufactured by said method. According to the method, an electrically conductive sheet is laminated to an electrically insulative sheet. An electrode is formed on the electrically conductive sheet. An electrically insulative layer is formed on a tissue contacting surface of the electrode. The individual electrodes are separated from the laminated electrically insulative sheet and the electrically conductive sheet. In another method, a flexible circuit is vacuum formed to create a desired profile. The vacuum formed flexible circuit is trimmed. The trimmed vacuum formed flexible circuit is attached to a jaw member of a clamp jaw assembly.

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Номер записи: 94

27-02-2002 дата публикации

Method and apparatus for positioning a catheter relative to an anatomical junction

Номер: EP1181895A2

Автор: Arthur W. Zikorus, Brian E. Farley, Christopher S. Jones, James G. Chandler, Ralph G. DePalma

Принадлежит: VNUS Medical Technologies LLC

An electrode catheter is introduced into a vein or other hollow anatomical structure, and is positioned at a treatment site within the structure. The end of the catheter is positioned near a junction formed in the structure. This junction can be the sapheno-femoral junction. The position of the catheter near the junction is determined based on a signal from a device associated with the catheter within the structure. A fiber optic filament which emits light is used with the catheter or a guide wire over which the catheter is advanced. The light is visible externally from the patient. The light dims and may no longer externally visible at the sapheno-femoral junction where the catheter moves past the deep fascia and toward the deep verious system. The position of the catheter can be determined based on this external observation. The position of the catheter can also be determined based on measured parameters such as temperature or flow rate within the structure, and the measured changes in one or more of these parameters as the catheter nears the junction. The hollow anatomical structure can be compressed for this procedure. The position of the catheter can also be determined mechanically by including a hook-shaped tip on the catheter or guide wire which would physically engage the junction.

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Номер записи: 95

29-03-2016 дата публикации

Catheter or guidewire device including flow sensing and use thereof

Номер: US9295842B2

Автор: John A. Wright, Jr., John Work, Lauren Klinker, Roozbeh Ghaffari, Stephen Lee

Принадлежит: MC10 Inc

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

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Номер записи: 96

03-11-2022 дата публикации

Systems for cardiac ablation and associated methods

Номер: US20220346867A1

Автор: Doron Harlev, Paul B. Hultz

Принадлежит: Affera Inc

Devices, systems, and methods for treating cardiac arrhythmia are disclosed herein. In some embodiments, devices, systems, and methods disclosed herein deliver interrogating energy to tissue at a position on a wall of an anatomical structure of a patient. If the devices, systems, and methods disclosed herein detect a change in electrical activity of the anatomical structure in response to the interrogating energy, the devices, systems, and methods disclosed herein can apply irreversible therapy to the tissue. In some embodiments, the change in electrical activity corresponds to slowing or termination of a detected arrhythmia

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Номер записи: 97

20-12-2012 дата публикации

Radiofrequency ablation catheter device

Номер: WO2012174375A1

Автор: Steven HIMMELSTEIN

Принадлежит: Tidal Wave Technology, Inc.

A radiofrequency ablation catheter device has a balloon catheter that may be expanded at some portions along its length through inflation. The catheter may have one or more differently compliant sections along its length, or may have a generally noncompliant body with one or more separate compliant portions overlying it, which compliant sections/portions may be separately inflated. One section of the catheter is expanded into a disk-like configuration with a circular, somewhat planar surface that is oriented orthogonally to the direction of the guide wire and facing in a distal direction. The catheter bears one or more RF electrodes that are capable of conducting RF energy and may be positioned on the surface of the balloon catheter such that they take a circular configuration on the planar surface. The unexpanded balloon catheter is advanced longitudinally through the blood vessel to the relevant location within the body lumen, inflated and pushed distally. To contact the inner surface of the lumen such that the electrodes ablate the nerve activity circumferentially at the desired location, such as around the renal artery ostium of the aorta, to ablate the nerve activity that leads specifically to the kidney.

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Номер записи: 98

04-10-2012 дата публикации

Radio frequency ablation catheter device

Номер: WO2012135703A2

Автор: Steven HIMMELSTEIN

Принадлежит: Tidal Wave Technology, Inc.

A cylindrically shaped wire frame bearing one or more circularly-configured RF electrodes can be contacted against the inner surface of the aorta, e.g., at the renal artery ostium, such that the circular electrodes ablate the nerve activity circumferentially around the renal artery ostium. The wire frame has a shape memory and can be positioned in a collapsed, non-deployed position at the end of a catheter and encapsulated within a sheath and then advanced longitudinally through the blood vessel, e.g., over a guide wire, to the relevant location within the body lumen. The sheath is then withdrawn, allowing the wire frame to be expanded into its deployed position in which it conforms to the walls of the lumen, so as to thereby allow the electrodes to contact the lumen wall to perform the ablation. The circular RF elements can be positioned around the opening to the renal artery using an imaging catheter that is passed through the hole of the circular RF electrode and at least partially into the entrance of the renal artery, and a balloon can be placed through the imaging catheter into the proximal segment of the renal artery for improved positioning and stabilization. The sheath can also have a longitudinal cut out to allow the imaging catheter to protrude out of the wire frame and into the renal artery to position the device at the renal artery ostium, even while the wire frame is still in its collapsed, non-deployed configuration within the sheath. Once the device has been properly positioned, the sheath is withdrawn and the wire frame is expanded such that the RF electrodes are positioned against the renal artery ostium.

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Номер записи: 99

29-11-2016 дата публикации

Electrocardiogram noise reduction

Номер: US9504522B2

Автор: Eitan Moshe Saba, Eyal Yechezkel Glottmann, Liron Shmuel Mizrahi, Michael Levin, Roy Urman, Yevgeny Bonyak, Yoav Lichtenstein

Принадлежит: Biosense Webster Israel Ltd

Methods and systems of catheterization include a flexible catheter adapted for insertion into a heart of a living subject. The catheter has a lumen for passing an electrically conductive fluid therethrough with the fluid exiting the catheter at the distal portion. The lumen is connectable to an irrigation pump to form a fluid communication therewith. A fluid reservoir connected to the lumen supplies the fluid to the catheter. Electrocardiogram circuitry is connectable to the subject for monitoring electrical activity in the heart. An electrically conductive cable diverts induced charges in the fluid from the catheter electrodes, for example by connection to an isolated ground of the electrocardiogram.

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Номер записи: 100