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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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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 8429. Отображено 100.
12-01-2012 дата публикации

Energy based devices and methods for treatment of patent foramen ovale

Номер: US20120010608A1
Автор: Dan Francis, Hanson S. Gifford, Iii, Jose Alejandro, Kenneth Horne, Mark E. Deem, William Malecki
Принадлежит: Terumo Corp

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

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Номер записи: 1
19-01-2012 дата публикации

Method for transurethral delivery of thermal therapy to tissue

Номер: US20120016273A1
Автор: Chris J. Diederich
Принадлежит: UNIVERSITY OF CALIFORNIA

An apparatus for applying thermal energy to a prostate gland, comprising a support tube having a longitudinal passageway, a power lead channeled through the longitudinal central passageway and an ultrasound crystal disposed around at least part of the support tube. The ultrasound crystal is coupled to the power lead which provides the power to energize the ultrasound crystal and generate ultrasound energy providing thermal therapy to the prostate gland. The ultrasound crystal further includes inactivated portions for reducing ultrasound energy directed to the rectal wall of the patient. A sealant is disposed in contact with the ultrasound crystal allowing vibration necessary for efficient ultrasound energy radiation for the thermal therapy of the prostate gland.

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Номер записи: 2
26-01-2012 дата публикации

Device, apparatus, and method of adipose tissue treatment

Номер: US20120022512A1
Автор: Boris Vaynberg
Принадлежит: Individual

A method and apparatus for adipose tissue treatment whereby two types of electromagnetic radiation are applied to the volume of tissue to be treated, One type of the electromagnetic radiations being RF and the second type of electromagnetic radiation being visible or infrared radiation.

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Номер записи: 3
02-02-2012 дата публикации

Coolant Line Clip Assemblies For Use With Fluid Delivery Systems

Номер: US20120029502A1
Автор: Arnold V. DeCarlo
Принадлежит: Vivant Medical LLC

The present disclosure provides a fluid clip for use with a coolant system for electrosurgical procedures. The fluid clip includes a clip housing having proximal and distal ends and a channel defined therethrough. The channel is dimensioned to receive tubing for carrying a cooling fluid from a cooling source. The fluid clip includes a luer that includes a passageway defined therethrough. The passageway is dimensioned to securely receive the tubing such that the tubing extends through the luer for reception within the channel defined in the clip housing. The luer includes one or more interface on a surface thereof that matingly engages a corresponding interface on the clip housing. The interface on the luer cooperates with the interface on the clip housing to limit rotation of the tubing.

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Номер записи: 4
08-03-2012 дата публикации

Microwave Spacers and Method of Use

Номер: US20120059365A1
Автор: Robert B. Cunningham
Принадлежит: Vivant Medical LLC

Disclosed is a microwave spacer for guiding and positioning microwave energy delivery devices during a surgical procedure. The microwave energy device spacer includes a body forming a plurality of device apertures defined therein, the plurality of device apertures including at least two lumens and at least one arcuate slot. The lumens are configured to receive an energy delivery device therethrough. The arcuate slot includes a length, a width and a radius of curvature and is configured to receive an additional energy delivery device therethrough.

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Номер записи: 5
05-04-2012 дата публикации

Guided procedural treatment device and method

Номер: US20120083653A1
Автор: Daniel P. Sperling
Принадлежит: Sperling Daniel P

A medical device for minimally invasive surgical procedures. The medical device includes an ablative probe for removing malignant tissues from a body. A guidance sleeve encapsulates the ablative probe and facilitates its advancement through an opening in the body. In addition, the device includes an imaging device for monitoring the position of the guidance sleeve and the ablative probe within the body.

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Номер записи: 6
17-05-2012 дата публикации

Apparatus, System and Method for Performing an Electrosurgical Procedure

Номер: US20120123403A1
Автор: Joseph D. Brannan
Принадлежит: Vivant Medical LLC

An apparatus for performing a microwave ablation procedure is provided. The apparatus includes a catheter including an open proximal end and a closed distal end configured to percutaneously access tissue. A directional microwave antenna probe adapted to connect to a source of microwave energy selectively couples to the catheter. The directional microwave antenna is rotatable within the catheter for directing the emission of microwave energy therefrom to tissue

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Номер записи: 7
31-05-2012 дата публикации

Method and apparatus for treatment of adipose tissue

Номер: US20120136282A1
Автор: Avner Rosenberg, Michael Kreindel, Shimon Eckhouse
Принадлежит: SYNERON MEDICAL LTD

The invention provides methods and apparatuses for the treatment of adipose tissue. The methods comprise application of ultrasound energy to a region of adipose tissue, and the apparatuses comprise at least one source of ultrasound energy configured to direct ultrasound energy through a skin surface into the subcutaneous adipose tissue. In one embodiment, a pressure gradient is created in the region generating relative movement between fat cell constituents having different densities. In another embodiment, a protrusion of skin and underlying adipose tissue containing is formed and ultrasound energy is radiated into the adipose tissue in the protrusion. In another embodiment, an RF electric field is generated inside a region of adipose tissue together with the ultrasound energy.

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Номер записи: 8
05-07-2012 дата публикации

Device for treating tissue

Номер: US20120172784A1
Автор: Declan Soden
Принадлежит: Individual

An apparatus for use in carrying out a prophylactic or treatment procedure on tissue comprises a head piece 1 having a receiver 2 for receiving an instrument such as an endoscope 10 and chamber 3 into which tissue is drawn by vacuum. There are two electrodes 11 within the chamber 2 and two electrodes 25 located on opposite sides of the entrance 5 into the chamber. The voltage applied to the inner and outer electrodes 11, 25 can be varied independently an allows tissue underlying the device to be treated. This is particularly important for colorectal cancers.

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Номер записи: 9
12-07-2012 дата публикации

Electrosurgical Systems and Printed Circuit Boards for Use Therewith

Номер: US20120179156A1
Автор: II Robert J. Behnke
Принадлежит: Vivant Medical LLC

An electrosurgical system for treating tissue is disclosed. The system includes an electrosurgical generator, a printed circuit board, a generator ground and a patient ground. The printed circuit board is disposed in mechanical cooperation with the electrosurgical generator and includes a plurality of conductive layers. The generator ground includes a first portion and a second portion. The first portion is electro-mechanically connected to a conductive layer of the printed circuit board and the second portion is electro-mechanically connected to another conductive layer of the printed circuit board. The patient ground includes a portion that is at least partially interposed between the first portion of the generator ground and the second portion of the generator ground.

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Номер записи: 10
09-08-2012 дата публикации

Systems, assemblies, and methods for treating a bronchial tree

Номер: US20120203216A1
Автор: Martin L. Mayse, Steven C. Dimmer
Принадлежит: Innovative Pulmonary Solutions Inc

Systems, assemblies, and methods to treat pulmonary diseases are used to decrease nervous system input to distal regions of the bronchial tree within the lungs. Treatment systems damage nerve tissue to temporarily or permanently decrease nervous system input. The treatment systems are capable of heating nerve tissue, cooling the nerve tissue, delivering a flowable substance that cause trauma to the nerve tissue, puncturing the nerve tissue, tearing the nerve tissue, cutting the nerve tissue, applying pressure to the nerve tissue, applying ultrasound to the nerve tissue, applying ionizing radiation to the nerve tissue, disrupting cell membranes of nerve tissue with electrical energy, or delivering long acting nerve blocking chemicals to the nerve tissue.

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Номер записи: 11
30-08-2012 дата публикации

Devices and methods for treatment of luminal tissue

Номер: US20120220996A1
Автор: Carson J. Shellengberger, George H. Smith, Jennifer A. Hodor, Jerome Jackson, Roger A. Stern, Roy D. Corbitt, Vincent N. Sullivan
Принадлежит: TYCO HEALTHCARE GROUP LP

Devices and methods are provided for treatment of tissue in a body lumen with an electrode deployment device. Embodiments typically include a device with a plurality of electrodes having a pre-selected electrode density arranged on the surface of a support. The support may comprise a non-distensible electrode backing that is spirally furled about an axis and coupled to an expansion member such as an inflatable elastic balloon. In some embodiments, the balloon is inflated to selectively expose a portion of the electrode surface while maintaining the electrode density.

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Номер записи: 12
20-09-2012 дата публикации

Temperature Based Ablation Completeness Algorithm

Номер: US20120239030A1
Автор: Casey M. Ladtkow
Принадлежит: Vivant Medical LLC

A system and method for determining completion of an ablation procedure is provided. An electrosurgical generator provides an electrosurgical energy source to an electrode probe assembly. The generator is connected to a thermal feedback assembly that includes at least one temperature sensor assembly. The generator includes a computer configured to (1) measure a time of energy delivered to the target tissue, (2) receive a temperature reading from the thermal feedback assembly, (3) estimate a size of an ablation volume based on the temperature reading, a distance between the electrode probe assembly and each temperature sensor assembly, and the measured time, (4) calculate a growth rate of the ablation volume based on the estimated size. The computer may also determine the ablation procedure is complete when the growth rate is less than or equal to a threshold.

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Номер записи: 13
04-10-2012 дата публикации

Reducing risk of complications associated with tissue ablation

Номер: US20120253188A1
Автор: George A. HOLLAND
Принадлежит: UNIVERSITY OF ROCHESTER

Methods and systems are described that reduce risks of hematologic, metabolic, and renal complications in a mammal, such as a human, undergoing tissue ablation. One such method includes inserting a probe into a mammal and ablating abnormal tissue in the mammal by emitting a first amount of energy from the probe. In some embodiments, after emitting the first amount of energy, a method can include denaturing proteins released from cells in the abnormal tissue by emitting a second amount of energy from at least one of the first probe or a second probe inserted into the mammal. Furthermore, some embodiments can be implemented such that during or after the emitting the energy from a probe, a composition is administered to the mammal in an effective amount to denature proteins released from cells in the abnormal tissue.

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Номер записи: 14
01-11-2012 дата публикации

Method and apparatus for real time monitoring of tissue layers

Номер: US20120277587A1
Автор: Avner Rosenberg, Edward Kantorovich, Yossef Ori ADANNY
Принадлежит: SYNERON MEDICAL LTD

The disclosed method and apparatus employ ultrasound beams to monitor the tissue type composition of body tissue that is to be treated and the temperature at each body tissue type or layer in real time. Additionally, the disclosed method and apparatus also provides ultrasound-based thermo-control of an aesthetic body treatment session.

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Номер записи: 15
22-11-2012 дата публикации

Energy facilitated composition delivery

Номер: US20120296262A1
Автор: Osamu Katoh, Wayne Ogata
Принадлежит: RetroVascular Inc

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

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Номер записи: 16
06-12-2012 дата публикации

Medical device

Номер: US20120310227A1
Автор: Yukitoshi Katou
Принадлежит: Terumo Corp

A medical device includes a steering unit at a proximal portion of a catheter to steer operations of a heating unit at a distal portion of the catheter. The steering unit includes a main body portion interlocked with the catheter; a slide portion interlocked with the heating unit and slidable relative to the main body portion; a guide unit interlocked with the main body portion and fixed to the slide portion for movement therewith; and an input connector electrically connected with the heating unit and connectable with an output connector for supplying electric energy to the heating unit. The guide unit hinders connection between the input connector and the output connector. A cutout portion enables connection between the input and output connectors when the guide unit moves with respect to the main body portion and the heating unit moves to a position at which the biological tissue is heatable.

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Номер записи: 17
27-12-2012 дата публикации

Vertebral bone navigation systems

Номер: US20120330301A1
Автор: Harold Carrison, Richard Pellegrino, Samit Patel
Принадлежит: Relievant Medsystems Inc

System and methods for channeling a path into bone include a trocar having a proximal end, distal end and a central channel disposed along a central axis of the trocar. The trocar includes a radial opening at or near the distal end of the trocar. The system includes a curveable cannula sized to be received in the central channel, the curveable cannula comprising a curveable distal end configured to be extended laterally outward from the radial opening in a curved path extending away from the trocar. The curveable cannula has a central passageway having a diameter configured allow a probe to be delivered through the central passageway to a location beyond the curved path.

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Номер записи: 18
27-12-2012 дата публикации

Medical treatment apparatus and control method of medical treatment device

Номер: US20120330310A1
Автор: Tomoyuki Takashino
Принадлежит: OLYMPUS MEDICAL SYSTEMS CORP

A medical treatment device to treat body tissues for conjugation, includes at least a pair of holding members configured to hold the body tissues, an energy output portion provided in at least one of the holding members and connected to an energy source to form a joined portion by supplying energy to the body tissues held by the pair of holding members and joining the body tissues, and a conjugation coating portion to a region from a neighborhood of a joined portion to coat joined surfaces with a substance capable of preventing fluid from invading during or after the body tissues being joined by adding the energy to the body tissues.

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Номер записи: 19
10-01-2013 дата публикации

Methods and systems for ultrasound treatment

Номер: US20130012842A1
Автор: Peter G. Barthe
Принадлежит: Guided Therapy Systems LLC

A method and system for ultrasound treatment are provided. Acoustic energy, including ultrasound, can serve as input energy to a mask with apertures, such apertures acting as secondary acoustic sources to create a modulated output acoustic energy in a treatment region and treatment effects. Under proper control output energy can be precisely placed and controlled in tissue. In some embodiments, methods and systems are configured for ultrasound treatment based on creating an output energy distribution in tissue. In some embodiments, methods and systems are configured based on creating an output temperature distribution in tissue.

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Номер записи: 20
10-01-2013 дата публикации

Methods and apparatus for performing a non-continuous circumferential treatment of a body lumen

Номер: US20130012867A1
Автор: Andrew Wu, Benjamin J. Clark, Denise Demarais, Hanson Gifford, III, Kenneth J. Michlitsch, Mark Deem, Nicolas Zadno
Принадлежит: Ardian Inc

Methods and apparatus are provided for non-continuous circumferential treatment of a body lumen. Apparatus may be positioned within a body lumen of a patient and may deliver energy at a first lengthwise and angular position to create a less-than-full circumferential treatment zone at the first position. The apparatus also may deliver energy at one or more additional lengthwise and angular positions within the body lumen to create less-than-full circumferential treatment zone(s) at the one or more additional positions that are offset lengthwise and angularly from the first treatment zone. Superimposition of the first treatment zone and the one or more additional treatment zones defines a non-continuous circumferential treatment zone without formation of a continuous circumferential lesion. Various embodiments of methods and apparatus for achieving such non-continuous circumferential treatment are provided.

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Номер записи: 21
10-01-2013 дата публикации

System for heating a vertebral body to treat back pain

Номер: US20130012936A1
Автор: John S. Crombie, Paula Papineau, Richard Pellegrino, Samit Patel, Thomas Ryan
Принадлежит: Relievant Medsystems Inc

Methods and systems for modulating intraosseous nerves (e.g., nerves within bone) are provided. For example, the methods and systems described herein may be used to modulate (e.g., denervate, ablate) basivertebral nerves within vertebrae. The modulation of the basivertebral nerves may facilitate treatment of chronic back pain.

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Номер записи: 22
21-03-2013 дата публикации

Cardio mapping system and method for cardio mapping

Номер: US20130072774A1
Автор: Allan M. Greenspan
Принадлежит: Albert Einstein Healthcare Network

A method and system for determining the mechanism of cardiac arrhythmia in a patient is disclosed. The method basically entails measuring the impedance of cardiac tissue in a portion of the patient's heart using a catheter during an episode of supraventricular tachycardia to produce an iso-impedance map of that cardiac tissue on a video display and analyzing the pattern of the iso-impedance map to differentiate focal arrhythmia caused by a circumscribed region of focal firing and reentrant arrhythmia caused by a macroreentrant circuit. The method can also be used to identify regions of coherent rapidly conducting tissue e.g., Bachman's bundle or the inferoposterior pathway insertion points, to identify focal “mother rotors” throughout the left atrium that may participate in the generation and maintenance of atrial fibrillation and to identify areas of CAFE (complex atrial/fractionated electrograms) that truly reflect these mother rotors.

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Номер записи: 23
21-03-2013 дата публикации

Applicator and Tissue Interface Module for Dermatological Device

Номер: US20130072925A1
Автор: Ben-Haim Yoav, Bentley Peter J., Chun Dong Hoon, Francis Daniel, Johnson Jessi E., Kim Steven, Shan Kevin, Su Ted
Принадлежит:

An tissue interface module has an applicator chamber on a proximal side of the tissue interface module and a tissue acquisition chamber on a distal side of the tissue interface module. The applicator chamber may include: an opening adapted to receive the applicator; an attachment mechanism positioned in the applicator chamber and adapted to attach the tissue interface module to the applicator; a sealing member positioned at a proximal side of the applicator chamber; and a vacuum interface positioned at a proximal side of the applicator chamber and adapted to receive a vacuum inlet positioned on a distal end of the applicator. The invention also includes corresponding methods. 1. A tissue interface module for use with an applicator in a microwave-based tissue modification system , the tissue interface module comprisingan applicator chamber on a proximal side of the tissue interface module, the applicator chamber comprising:an opening adapted to receive the applicator;an attachment mechanism positioned in the applicator chamber and adapted to attach the tissue interface module to the applicator;a sealing member positioned at a proximal side of the applicator chamber;a vacuum interface positioned at a proximal side of the applicator chamber and adapted to receive a vacuum inlet positioned on a distal end of the applicator;a tissue acquisition chamber on a distal side of the tissue interface module, the tissue acquisition chamber comprising a tissue acquisition opening on a distal side of the tissue interface module;a flexible bio-barrier positioned between, and in fluid communication with, the applicator chamber and the tissue acquisition chamber, the flexible bio-barrier being substantially impermeable to air or fluids;an airflow pathway within the tissue interface module, the airflow pathway connecting the applicator chamber and the tissue acquisition chamber;a filter disposed in the airflow pathway connecting the applicator chamber and the tissue acquisition chamber ...

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Номер записи: 24
21-03-2013 дата публикации

METHOD AND APPARATUS EMPLOYING ULTRASOUND ENERGY TO TREAT BODY SPHINCTERS

Номер: US20130072928A1
Автор: Schaer Alan K.
Принадлежит:

Methods and apparatus for treating gastroesophageal reflex and other luminal conditions provide for delivering acoustic energy to a body lumen to remodel tissue surrounding the body lumen. In the case of treating GERD, a catheter carrying an ultrasonic or other vibrational transducer is introduced to the lower esophageal sphincter, and acoustic energy is delivered to the sphincter in order to tighten or bulk the sphincter such that reflex is reduced. 126-. (canceled)27. A method of intraluminal ablation of nerve tissue surrounding a bodily lumen of a subject , comprising:delivering an ablation device within a bodily lumen of a subject, said ablation device comprising a catheter and at least one energy delivery element positioned along a distal end of the catheter, said at least one energy delivery element comprising at least one ultrasound transducer, wherein the catheter comprises at least one fluid passage and a balloon positioned along a distal end of the catheter, said balloon configured to surround the at least one energy delivery element, said at least one fluid passage being in fluid communication with said balloon;advancing the ablation device within the bodily lumen to position the at least one energy delivery element adjacent target nerve tissue of the subject;at least partially inflating the balloon by delivering a cooling fluid through the at least one fluid passage of the catheter;circulating a cooling fluid through an interior of the balloon via the at least one fluid passage of the catheter to remove heat away from the at least one energy delivery element; andactivating the at least one energy delivery element to deliver energy radially outwardly from said at least one energy delivery element through the balloon and toward a wall of the bodily lumen, wherein the at least one energy delivery element is activated so that sufficient energy is delivered to at least partially ablate nerve tissue adjacent the wall of the bodily lumen;wherein cooling fluid ...

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Номер записи: 25
21-03-2013 дата публикации

Applicator and Tissue Interface Module for Dermatological Device

Номер: US20130072930A1
Автор: Ben-Haim Yoav, Bentley Peter J., Chun Dong Hoon, Francis Daniel, Johnson Jessi E., Kim Steven, Shan Kevin, Su Ted
Принадлежит:

An tissue interface module has an applicator chamber on a proximal side of the tissue interface module and a tissue acquisition chamber on a distal side of the tissue interface module. The applicator chamber may include: an opening adapted to receive the applicator; an attachment mechanism positioned in the applicator chamber and adapted to attach the tissue interface module to the applicator; a sealing member positioned at a proximal side of the applicator chamber; and a vacuum interface positioned at a proximal side of the applicator chamber and adapted to receive a vacuum inlet positioned on a distal end of the applicator. The invention also includes corresponding methods. 1. A method of treating a patient comprising:attaching a tissue interface module to an applicator, wherein the distal end of the applicator is positioned in an applicator chamber of the tissue interface module;placing a distal opening of a tissue acquisition chamber of the tissue interface module against a tissue surface;pulling a portion of the patient's skin into the tissue acquisition chamber by creating a vacuum in the tissue acquisition chamber, the vacuum being created by drawing air from the tissue acquisition chamber to a vacuum source in the applicator through a vacuum path comprising the applicator chamber and a filter between the applicator chamber and the tissue acquisition chamber; andapplying microwave energy to tissue positioned in the tissue acquisition chamber.2. The method of wherein the method further comprises cooling tissue in the tissue acquisition chamber during the application of microwave energy.3. The method of claim 1 , wherein air is pulled from the tissue acquisition chamber claim 1 , through the filter claim 1 , into the applicator chamber and into a vacuum interface positioned on the distal end of the applicator.4. The method of claim 1 , wherein the applicator chamber and the tissue acquisition chamber are separated by claim 1 , and in fluid communication with ...

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Номер записи: 26
28-03-2013 дата публикации

ELECTROSURGICAL FORCEPS

Номер: US20130079764A1
Автор: Fischer Klaus, HAFNER Dieter, Schaller Daniel
Принадлежит: ERBE ELEKTROMEDIZIN GMBH

Electrosurgical forceps for efficiently severing of hollow organs, in particular vessels. The electrosurgical forceps have a first branch and a second branch for gripping the hollow organ. The forceps have at least one neutral electrode on the second branch, at least one first coagulation electrode and a second coagulation electrode that is disposed on the first branch for applying a first HF current by means of the coagulation electrode, and at least one cutting device, which is arranged between the coagulation electrodes in order to sever the hollow organ in a cutting region. The cutting device has a cutting electrode for applying a second HF current between the cutting and neutral electrodes. The coagulation electrodes are arranged spaced apart from one another in such a way that the first HF current does not flow through or only a minor amount of the same flows through the cutting region. 113.-. (canceled)14. An electrosurgical forceps with a first branch and a second branch for gripping a hollow organ , comprisingat least one neutral electrode on the second branch;at least one first coagulation electrode and a second coagulation electrode, which is arranged on the first branch for applying a first RF current by means of the coagulation electrodes and the neutral electrode;at least one cutting device, arranged between the coagulation electrodes for severing the hollow organ in a cutting region (SB),characterized in thatthe cutting device comprises at least one cutting electrode for applying a second RF current by means of the cutting electrode and the neutral electrode, the coagulation electrodes being arranged at a distance from one another such that the first RF current does not flow, or hardly flows, through the cutting region (SB) when it is applied.15. The electrosurgical forceps as claimed in claim 14 , characterized by at least one recess for holding the cutting region (SB) when gripping the hollow organ.16. The electrosurgical forceps as claimed in claim ...

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Номер записи: 27
28-03-2013 дата публикации

System and Method for Performing an Electrosurgical Procedure Using an Ablation Device with an Integrated Imaging Device

Номер: US20130079765A1
Автор: Kim Steven, Prakash Mani N., Rick Kyle R.
Принадлежит: Vivant Medical, Inc.

An ablation device includes an antenna assembly having a radiating portion configured to deliver energy from a power source to tissue. The radiating portion has an outer conductor and an inner conductor. The inner conductor is disposed within the outer conductor. The device also includes an imaging device operably coupled to the radiating portion. The imaging device is configured to generate imaging data corresponding to tissue proximate the radiating portion of the antenna assembly. 1. An ablation device , comprising:an antenna assembly having a radiating portion configured to deliver energy from a power source to patient tissue; andan imaging device coupled to the radiating portion and configured to generate imaging data corresponding to the tissue, wherein the imaging device is movable at least partially along the length of the radiating portion.2. An ablation device according to claim 1 , wherein the radiating portion includes outer and inner conductors extending therethrough claim 1 , the inner conductor disposed within the outer conductor.3. An ablation device according to claim 2 , wherein the inner conductor is configured to deploy from the outer conductor into the tissue.4. An ablation device according to claim 1 , wherein the imaging device is selected from the group consisting of ultrasound transducers claim 1 , CAT scan devices claim 1 , MRI devices claim 1 , and PET scan devices.5. An ablation device according to claim 1 , wherein the imaging device is rotatable relative to the radiating portion and configured to generate three-dimensional image data of tissue surrounding the radiating portion.6. An ablation device according to claim 1 , wherein a lumen is defined coaxially through at least a portion of the radiating portion and wherein claim 1 , the imaging device is disposed within the lumen.7. An ablation device according to claim 1 , wherein the imaging device is configured to communicate the imaging data to a processing unit adapted to generate a ...

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Номер записи: 28
28-03-2013 дата публикации

METHOD AND APPARATUS FOR FRACTIONAL SKIN TREATMENT

Номер: US20130079766A1
Автор: Adanny Yossef Ori, LEVINE Baruch, NAHSHON Genady, Rosenberg Avner
Принадлежит:

An apparatus for cosmetic RF skin treatment where the RF energy supply is isolated from the patient treated, such that in course of treatment no undesired current flows through the subject body. 116-. (canceled)17. A skin treatment device , comprising:an applicator tip;a ground electrode arranged on the applicator tip, the ground electrode being configured for contacting skin of a patient and being further configured for connection to a circuit for delivering RF energy to the skin, the ground electrode having a ground electrode surface area; anda plurality of RF application elements arranged on the applicator tip, the RF application elements having a combined application element surface area substantially smaller than the ground electrode surface area, wherein the plurality of RF application elements are configured for connection to the circuit for delivering RF energy to the skin.18. The skin treatment device of claim 17 , wherein the plurality of RF application elements are arranged in a cluster on the applicator tip claim 17 , and wherein the ground electrode is arranged on one side of a periphery of the cluster.19. The skin treatment device of claim 18 , further comprising at least one additional ground electrode claim 18 , the at least one additional ground electrode arranged at the periphery of the cluster of RF application elements claim 18 , and wherein a combined ground electrode surface area of the ground electrode and the at least one additional ground electrode is substantially greater than the combined application element surface area of the plurality of RF application elements.20. The skin treatment device of claim 19 , wherein the cluster of RF application elements are arranged between at least two ground electrodes.21. The skin treatment device of claim 19 , wherein the at least one additional ground electrode includes a plurality of additional ground electrodes arranged on the applicator tip in a manner at least partially surrounding the cluster of ...

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Номер записи: 29
28-03-2013 дата публикации

EMBOLIZATION

Номер: US20130079767A1
Автор: Casey, II Thomas V., Lanphere Janel, Rioux Robert F.
Принадлежит: BOSTON SCIENTIFIC SCIMED, INC.

A particle includes a ferromagnetic material, a radiopaque material, and/or an MRI-visible material. 118-. (canceled)19. A particle , comprising a polymeric matrix and a radiopaque material distributed in the polymeric matrix , wherein the particle has a diameter of from about ten microns to about 3 ,000 microns , and wherein the particle has an interior with a density of large pores and a surface region with a density of large pores , and the density of large pores of the interior is greater than the density of large pores of the surface region.20. The particle of claim 19 , wherein the radiopaque material is selected from the group consisting of metals claim 19 , metal alloys claim 19 , and contrast agents.21. The particle of claim 19 , wherein the radiopaque material comprises a member selected from the group consisting of titanium dioxide and bismuth subcarbonate.22. The particle of claim 19 , wherein the radiopaque material comprises platinum or barium sulfate.23. The particle of claim 19 , wherein the radiopaque material is substantially homogeneously distributed throughout the polymeric matrix.24. The particle of claim 19 , wherein the polymeric matrix comprises a polysaccharide.25. The particle of claim 19 , wherein the polymeric matrix comprises a member selected from the aroup consisting of polyvinyl alcohols claim 19 , polyacrylic acids claim 19 , polymethaerylle acids claim 19 , poly vinyl sulfonates claim 19 , carboxyrnethyl celluloses claim 19 , hydroxyethyl celluloses claim 19 , substituted celluloses claim 19 , polyacrylamides claim 19 , polyethylene glycols claim 19 , polyamides claim 19 , polyureas claim 19 , polyurethanes claim 19 , polyesters claim 19 , polyethers claim 19 , polystyrenes claim 19 , polysaccharides claim 19 , polylactic acids claim 19 , polyethylenes claim 19 , polymethylmethacrylates claim 19 , polycaprolactones claim 19 , polyglycolic acids claim 19 , poly(lactic-co-glycolic) acids claim 19 , and combinations thereof.26. The ...

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Номер записи: 30
28-03-2013 дата публикации

CATHETER WITH REVERSIBLE ADHESIVENESS, FOR STABILIZATION DURING TRANSCATHETER ABLATION BY MEANS OF RADIO FREQUENCY

Номер: US20130079768A1
Автор: De Luca Viviana, Grimaldi Massimo
Принадлежит:

A catheter that combines the delivery of radiofrequency, normally used in transcatheter ablation of cardiac arrhythmias, with a system providing temporary and reversible adhesion to heart tissue, so as to allow the stabilization of the catheter during breathing and pulsations of the heart, leading to more effective and more easily standardized radiofrequency lesions. 1. Catheter with reversible adhesiveness , for stabilization during transcatheter ablation by means of radio frequency comprising a flexible hollow element with a grip at the lower end with a plunger through which it acts on a pull-wire which is coaxial to and inside the hollow element , an electrode suitably and conveniently placed on the outside surface of the flexible hollow element capable of delivering unipolar radiofrequency and for this powered by an electric wire inside the flexible hollow element , one or more electrodes for sensing , for example powered respectively by electric wires inside the lengthwise cavity of the flexible hollow element , each electrode for sensing forming an electric dipole with the electrode whose recorded information is transmitted by an electric wire housed within the flexible hollow element , the electrode finally being irrigated during the delivery of radiofrequency with a suitable liquid carried by a tube which is also housed in the longitudinal cavity of the flexible hollow element and ends at the electrode from which the liquid flows through appropriate holes on its surface , said catheter further comprising a pole of stabilization which can adhere temporarily and reversibly to a generic tissue with which it is preliminary in contact with , said adherence taking place with the cooling of the pole of stabilization until it reaches a temperature between 0° and −30° centigrade , obtained by passing a small tube ending in the pole through the flexible hollow element which causes the release , at the command of the operator , of a suitable quantity of a compound that ...

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Номер записи: 31
04-04-2013 дата публикации

SYSTEMS AND METHODS FOR PLANNING IMAGE GUIDED INTERVENTIONAL PROCEDURES

Номер: US20130085380A1
Автор: Velusamy Gnanasekar
Принадлежит: PERFINT HEALTHCARE PRIVATE LIMITED

In some embodiments, a planning station can receive image data associated with an image(s) of an area of interest within a body of a patient and display the image(s) on a display device. A user can make a selection of a first interventional tool and a second interventional tool about which information is stored in a memory of the planning station. The planning station can execute a simulation viewable on the display device of a treatment plan for disposing the first and second interventional tools in the body of the patient and applying thermal energy from the first and second interventional tools to the body of the patient. The planning station can generate a thermal model of the thermal effect collectively produced on tissue of the patient by the first interventional tool and the second interventional tools and display the thermal model on the display device. 1. A non-transitory processor-readable medium storing code representing instructions to cause a processor to:receive image data associated with at least one image of an area of interest within a body of a patient, the area of interest including a target tissue to be treated;display the at least one image on a display device;receive an input from a user of a selection of a first interventional tool from a plurality of interventional tools about which information is stored in a memory,receive an input from the user of a selection of a second interventional tool from the plurality of interventional tools about which information is stored in the memory;execute a simulation viewable on the display device of a treatment plan including disposing the first interventional tool in a first location in the body of the patient, disposing the second interventional tool in a second location in the body of the patient, applying a first amount of energy from the first interventional tool and applying a second amount of energy from the second interventional tool to the body of the patient;generate a thermal model of the ...

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Номер записи: 32
04-04-2013 дата публикации

Methods for Treating Eye Conditions

Номер: US20130085484A1
Автор: Brown, JR. William E., Van Valen Marcia
Принадлежит: BIOLASE, Inc.

Systems and methods are provided for reducing intraocular pressure in an eye. A perpendicular incision is made through a conjunctiva of the eye to access a trabecular meshwork of the eye. Electromagnetic energy is focused through the perpendicular incision to ablate a portion of the trabecular network, where said ablation creates a channel for outflow flow of fluid through a sclera venous sinus to reduce pressure within the eye. 1. A method of reducing intraocular pressure in an eye , comprising:making a perpendicular incision through a conjunctiva of the eye to access a trabecular meshwork of the eye; andfocusing electromagnetic energy through the perpendicular incision to ablate a portion of the trabecular network, wherein said ablation creates a channel for outflow flow of fluid through a sclera venous sinus to reduce pressure within the eye.2. The method of claim 1 , wherein the electromagnetic energy is focused using a laser tip claim 1 , wherein the laser tip is inserted through the perpendicular incision claim 1 , and wherein the laser tip is transited around the lens without crossing the lens while focusing the electromagnetic energy to ablate portions of the trabecular network.3. The method of claim 1 , wherein the electromagnetic energy is focused using a laser tip claim 1 , wherein the laser tip is inserted through the perpendicular incisions claim 1 , and wherein the laser tip is not moved transverse across the width of a lens of the eye.4. The method of claim 1 , wherein the conjunctiva begins at a rested position claim 1 , wherein the method further includes:rotating the conjunctiva from the rested position to a rotated position prior to making the perpendicular incision; andreleasing the conjunctiva from the rotated position to the rested position following ablation of the portion of the trabecular network.5. The method of claim 4 , wherein claim 4 , when the conjunctiva is in the rested position claim 4 , the perpendicular incision is further from ...

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Номер записи: 33
04-04-2013 дата публикации

NARROW GAUGE HIGH STRENGTH CHOKED WET TIP MICROWAVE ABLATION ANTENNA

Номер: US20130085488A1
Автор: Bonn Kenlyn S., Brannan Joseph D.
Принадлежит: Vivant Medical, Inc.

An electromagnetic surgical ablation probe having a coaxial feedline and cooling chamber is disclosed. The disclosed probe includes a dipole antenna arrangement having a radiating section, a distal tip coupled to a distal end of the radiating section, and a ring-like balun short, or choke, which may control a radiation pattern of the probe. A conductive tube disposed coaxially around the balun short includes at least one fluid conduit which provides coolant, such as dionized water, to a cooling chamber defined within the probe. A radiofrequency transparent catheter forms an outer surface of the probe and may include a lubricious coating. 1. An ablation probe , comprising:a coaxial feedline having an inner conductor, an outer conductor disposed coaxially about the inner conductor, and a dielectric disposed therebetween, wherein the inner conductor and dielectric extend beyond the outer conductor at a distal end thereof;a balun short disposed in electrical communication around the outer conductor and including a first longitudinal notch and at least one second longitudinal notch defined therein;a conductive tube disposed coaxially around the balun short; andat least one fluid conduit defined longitudinally within the conductive tube, the fluid conduit including an inflow tube disposed longitudinally along the outer conductor and positioned at least partially within the first notch.2. The ablation probe in accordance with claim 1 , wherein the balun short includes at least two first notches defined therein adapted to receive a corresponding number of rib members and includes at least two second notches defined radially therebetween claim 1 , wherein the at least two rib members are disposed longitudinally along the outer conductor and positioned at least partially within the respective notches thereof to define at least two fluid conduits within the conductive tube.3. The ablation probe in accordance with claim 1 , wherein a distal end of the conductive tube is ...

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Номер записи: 34
11-04-2013 дата публикации

Methods and systems for detection and thermal treatment of lower urinary tract conditions

Номер: US20130090640A1
Автор: Christopher H. Fry, David Borzelleca, John Sherry, John Young, Ruth Cheng, Sandra Nagale, Theresa Hague
Принадлежит: Boston Scientific Scimed Inc, UNIVERSITY OF SURREY

The invention is directed to a method for treating a urinary system. The method includes positioning one or more treatment units with respect to an organ wall. The one or more treatment units may be configured to deliver thermal energy. The method further includes delivering energy through the one or more treatment units to heat tissue of the organ wall.

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Номер записи: 35
11-04-2013 дата публикации

LAPARSCOPIC TISSUE MORCELLATOR SYSTEMS AND METHODS

Номер: US20130090642A1
Автор: Germain Aaron, Klein Kyle, Shadduck John H., Truckai Csaba, Walker Michael D.
Принадлежит: ARQOS Surgical, Inc.

A surgical tissue cutting and extraction device includes a sleeve having a tissue extraction lumen. One or more jaw members are coupled to the sleeve and configured to pivot or flex relative to the sleeve to capture tissue. The captured tissue may then be resected using radio frequency or other cutting tools on the sleeve. 1. A surgical tissue cutting and extraction device , comprising:an axially-extending sleeve having a tissue extraction lumen;an electrode edge disposed at a distal end of the sleeve; andone or more jaw members coupled to the sleeve, the jaw members configured to pivot or flex exteriorly of the extraction lumen toward and away from one another to capture tissue therebetween.2. The surgical device of wherein at least one jaw and sleeve are axially moveable relative to one another.3. The surgical device of wherein the electrode edge is coupled to an RF source and a controller for generating a tissue-cutting plasma at the electrode edge.4. The surgical device of wherein the electrode edge comprises a first polarity electrode and at least one jaw comprises a second polarity electrode.5. The surgical device of wherein the sleeve is axially moveable relative to the jaw member.6. The surgical device of wherein the sleeve is rotationally moveable relative to the jaw member.7. The surgical device of wherein the sleeve is actuatable axially and/or rotationally by a manual actuator.8. The surgical device of further comprising a motor drive to axially and/or rotationally actuate the sleeve.9. The surgical device of wherein the jaws are moveable toward or away from one another by a manual actuator.10. The surgical device of further comprising a motor drive to move the jaws are moveable toward or away from one another by a motor drive.11. The surgical device of wherein the jaws and sleeve are actuatable by a motor drive in a selected sequence.12. The surgical device of further comprising an RF on-off limit switch which terminates RF delivery based on the axial ...

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Номер записи: 36
11-04-2013 дата публикации

Multiple Treatment Zone Ablation Probe

Номер: US20130090646A1
Автор: Moss Kevin, Pearson Robert
Принадлежит: ANGIODYNAMICS, INC.

An energy delivery probe and method of using the energy delivery probe to treat a patient is provided herein. The energy delivery probe has at least one probe body having a longitudinal axis and at least a first trocar and a second trocar. Each trocar comprises at least two electrodes that are electrically insulated from each other, and each electrode is independently selectively activatable. An insulative sleeve is positioned in a coaxially surrounding relationship to each of the first trocar and the second trocar. The probe also has a switching means for independently activating at least one electrode. The method involves independently and selectively activating the first and second electrodes to form an ablation zone, then repeating the ablation by delivering energy to a second set of electrodes, producing one or more overlapping ablation zone, and eliminating the need to reposition the ablation probes. 1. A method of treating a patient , wherein the method comprises:identifying a target tissue; at least a first trocar and a second trocar, wherein each trocar comprises at least a first electrode and a second electrode that are electrically insulated from each other, and wherein each electrode is independently selectively activatable, and', 'an insulative sleeve positioned in a coaxially surrounding relationship to at least a portion of each of the first trocar and the second trocar,, 'providing at least one energy delivery probe comprising'}inserting the probe into or near the target tissue; anddelivering electrical energy to the first electrode on the first trocar and the first electrode on the second trocar to ablate the target tissue, thereby forming a first ablation zone.2. The method of claim 1 , wherein the method further comprises simultaneously delivering energy to the first electrode on the first trocar and the first electrode on the second trocar.3. The method of claim 1 , wherein the method further comprises inserting the probe into or near the target ...

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Номер записи: 37
18-04-2013 дата публикации

Motion sensitive and capacitor powered handheld device

Номер: US20130096539A1
Автор: Jon R. Salvati, Michael Curry, Michael T. Mcmahon, Robert J. Wood, Steven R. Slawson
Принадлежит: Welch Allyn Inc

A handheld device includes an electronic instrument and a capacitive power supply for storing and delivering power to the electronic instrument. The capacitive power supply includes at least one capacitor, and an electronic circuit operable to boost a voltage from the capacitor to a higher voltage for use by the electronic instrument. The capacitive power supply can be rapidly recharged. Some configurations include an accelerometer which permits the handheld device to detect movement and perform various operations responsive to detected movement. A dual charging station is also disclosed.

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Номер записи: 38
18-04-2013 дата публикации

CATHETER WITH PRESSURE SENSING

Номер: US20130096551A1
Автор: Altmann Andres Claudio, Ephrath Yaron, Govari Assaf, Schwartz Yitzhack
Принадлежит: BIOSENSE WEBSTER (ISRAEL), LTD.

A medical probe includes a flexible insertion tube, having a distal end for insertion into a body cavity of a patient, and a distal tip, which is disposed at the distal end of the insertion tube and is configured to be brought into contact with tissue in the body cavity. A resilient member couples the distal tip to the distal end of the insertion tube and is configured to deform in response to pressure exerted on the distal tip when the distal tip engages the tissue. A position sensor within the probe senses a position of the distal tip relative to the distal end of the insertion tube, which changes in response to deformation of the resilient member. 131-. (canceled)32. An ablation catheter for use in a tissue ablation procedure comprising:a flexible insertion tube, having a distal end for insertion into a body cavity of a patient;a distal tip electrode disposed at the distal end of the insertion tube and configured to be brought into contact to ablate tissue in the body cavity;a resilient member which couples the distal tip electrode to the distal end of the insertion tube and is configured to deform in response to pressure exerted on the distal tip electrode when the distal tip electrode engages the tissue during the tissue ablation procedure; anda magnetic position sensor near the distal tip electrode for sensing a position of the distal tip electrode relative to the distal end of the insertion tube, which changes in response to deformation of the resilient member, to give a total magnitude of the movement of distal tip electrode relative to the distal end of insertion tube, so as to give a measure of the deformation of resilient member, and the magnetic position sensor is configured to generate a signal, responsively to the deformation, which is indicative of the pressure exerted on the distal tip electrode during the tissue ablation procedure.33. The ablation catheter according to claim 32 , wherein the magnetic position sensor is configured to generate a ...

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Номер записи: 39
18-04-2013 дата публикации

ELECTROSURGICAL POWER CONTROL

Номер: US20130096556A1
Автор: Drucker Karen, Iki Kobi, Lorang Douglas M., Mitchell Mathew E.
Принадлежит:

A method and apparatus include determining a value of a parameter associated with operation of an electrosurgical probe having a particular probe design, and determining whether the value of the parameter is within a range of values that has been predetermined for the particular probe design to indicate that the probe is treating tissue in a desired manner. Power is delivered to the probe according to an algorithm based upon a determination that the value of the parameter is outside the range of values The algorithm delivers power in a pulsed profile including portions of low power and portions of high power. In one embodiment, the tissue treatment is ablation, the parameter is impedance, and the method limits tissue necrosis to less than 200 microns. In another embodiment, the tissue treatment is shrinkage, the parameter is temperature, and the method limits power delivery when the probe is not shrinking tissue. 1. A method comprising:determining whether a probe is delivering power in an ablative mode or a non-ablative mode;delivering power according to a first algorithm when in the ablative mode;delivering power according to a second algorithm different from the first algorithm when in the non-ablative mode, the second algorithm comprising a pulsed profile including portions of low power and portions of high power, the portions of high power being of sufficient durations to initiate the ablative mode and the durations being less than 250 milliseconds.2. The method of further comprising limiting the portions of low power to a duration that causes substantially no noticeable delay in initiating ablation.3. The method of wherein the duration of the portions of low power is between approximately 50 milliseconds and approximately 500 milliseconds.4. The method of wherein the portions of low power comprise power between approximately 0 watts and approximately 50 watts.5. The method of wherein the portions of high power have a duration substantially equal to a minimum ...

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Номер записи: 40
25-04-2013 дата публикации

Tissue extraction devices and methods

Номер: US20130103021A1
Автор: Aaron GERMAIN, Balazs Lesko, Benedek Orczy-Timko, Kyle Klein, Michael D. Walker
Принадлежит: ARQOS Surgical Inc

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

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Номер записи: 41
25-04-2013 дата публикации

THERMAL DENERVATION DEVICES AND METHODS

Номер: US20130103022A1
Автор: Patel Samit, Pellegrino Richard, Ryan Thomas, Sutton Jeffrey
Принадлежит: Relievant Medsystems, Inc.

A method and apparatus for treating an intraosseous nerve. The method includes positioning a hollow shaft through the cortical shell of a vertebral body and into a cancellous bone region of the vertebral body. The hollow shaft includes an annular wall having a longitudinal bore therein, a proximal portion and a distal portion, and a first window extending transversely through the annular wall. An electrosurgical probe is advanced within the longitudinal bore from the proximal portion toward the distal portion. The electrosurgical probe includes a first treatment element at a distal end of the probe, wherein the first treatment element being in electrical connection with a power supply. The first treatment element is slidably disposed within the longitudinal bore so that the first treatment element is advanced radially outward from the window and shaft to affect treatment of the intraosseous nerve within the cancellous bone region. 1. An electrosurgical device , comprising:an elongate shaft having a proximal end and a distal end, at least a portion of said elongate shaft comprising an electrically conductive material;an intermediate spacer having a proximal end and a distal end, said intermediate spacer comprising an electrically insulating material,wherein said proximal end of said intermediate spacer is mechanically connected to said distal end of said elongate shaft; anda sharp tip comprising an electrically conductive material having a proximal end and a distal end,wherein said proximal end of said tip is mechanically connected to said distal end of said intermediate spacer,wherein said distal end of said sharp tip is configured to pierce cortical bone of a vertebral body,wherein said elongate shaft is electrically connected to a power supply via a first lead,wherein said sharp tip is connected to said power supply via a second lead,wherein said elongate shaft and said tip form a bipolar heating device, andwherein said bipolar heating device is configured to ...

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Номер записи: 42
25-04-2013 дата публикации

Litz wire battery powered device

Номер: US20130103023A1
Автор: Alan E. Green, David I. Ruddenklau, David J. Stocks, Gavin M. Monson, Gordon J. Leather, John Hefin Bowen Evans, Paul C. Roberts, Robin M. Lee
Принадлежит: Ethicon Endo Surgery Inc

A medical instrument is disclosed. The medical instrument includes a housing and a handle for gripping by a user, an end effector coupled to the handle and having at least one electrical contact, a battery, and a radio frequency (RF) generation circuit coupled to and operated by the battery. The RF generation circuit is operable to generate an RF drive signal and to provide the RF drive signal to the at least one electrical contact, wherein the RF generation circuit is supported by the housing. The RF generation circuit includes a resonant circuit that includes at least one inductive element constructed of litz wire.

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Номер записи: 43
25-04-2013 дата публикации

DIRECTIVE WINDOW ABLATION ANTENNA WITH DIELECTRIC LOADING

Номер: US20130103025A1
Автор: Brannan Joseph D.
Принадлежит: Vivant Medical, Inc.

An electrosurgical device for directing energy to a target volume of tissue includes a coaxial feedline having an inner conductor, an outer conductor coaxially disposed around the inner conductor, and a dielectric material disposed therebetween. An elongated electrically-conductive member is longitudinally disposed at a distal end of the inner conductor. A balun structure is disposed on the outer conductor. The device also includes an electrically-conductive cylinder coaxially disposed around a distal portion of the balun structure, and a dielectric structure disposed substantially adjacent to a distal end of the electrically-conductive cylinder, wherein the dielectric structure longitudinally extends from the distal end of the electrically-conductive cylinder to a distal end of the electrically-conductive member. 1. An electrosurgical device for directing energy to a target volume of tissue , comprising:a coaxial feedline having an inner conductor, an outer conductor coaxially disposed around the inner conductor, and a dielectric material disposed therebetween;an elongated electrically-conductive member longitudinally disposed at a distal end of the inner conductor;a balun disposed in association with the outer conductor;an electrically-conductive cylinder coaxially disposed around a distal portion of the balun; anda dielectric structure disposed substantially adjacent to a distal end of the electrically-conductive cylinder, wherein the dielectric structure longitudinally extends from the distal end of the electrically-conductive cylinder to a distal end of the electrically-conductive member.2. The electrosurgical device of claim 1 , wherein a portion of the inner conductor and the dielectric material of the coaxial feedline extends beyond the outer conductor at a distal end of the coaxial feedline.3. The electrosurgical device of claim 1 , wherein the electrically-conductive member is electrically coupled to the inner conductor.4. The electrosurgical device of ...

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Номер записи: 44
02-05-2013 дата публикации

Targeted Cooling of Deployable Microwave Antenna

Номер: US20130110102A1
Автор: Nguyen Tao, Prakash Mani N., Rusin Christopher T.
Принадлежит: Vivant Medical, Inc.

The present disclosure relates to devices and methods for the treatment of tissue with microwave energy. The devices and methods disclosed herein utilize an antenna assembly which includes an elongate member, an outer conductor, an inner conductor, at least a portion of which is deployable, and a cooling system. The cooling system disclosed herein may significantly curtail any theoretical, or potential negative effects upon the target tissue experienced during the transmission of microwave energy to the antenna assembly due to ohmic heating. 1. A microwave ablation probe , comprising:an elongated shaft defining a longitudinal axis and having proximal and distal ends;an outer conductor disposed along the longitudinal axis within the elongated shaft;a dielectric disposed coaxially within the outer conductor; an inner conductor disposed coaxially within the dielectric; and', 'a cooling sleeve disposed coaxially about a the distal portion of the inner conductor having a cooling chamber defined therein;, 'an antenna disposed coaxially within the dielectric and movable between a proximal non-deployed position wherein the antenna is substantially within the outer conductor, and a distal deployed position wherein the antenna extends distally from the outer conductor, the antenna comprisingat least one inflow conduit in fluid communication with the cooling chamber and configured to deliver coolant thereto; andat least one outflow conduit in fluid communication with the cooling chamber and configured to remove coolant therefrom.2. The microwave ablation probe according to claim 1 , wherein the cooling chamber includes a baffle radially separating the cooling chamber into a first cooling region and a second cooling region.3. The microwave ablation probe in accordance with claim 2 , wherein the at least one inflow conduit includes a first inflow conduit in fluid communication with the first cooling chamber and a second inflow conduit in fluid communication with the second ...

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Номер записи: 45
09-05-2013 дата публикации

Impedance mediated control of power delivery for electrosurgery

Номер: US20130116678A1
Автор: Miriam H. Taimisto, Roseanne Varner, Tim Koss
Принадлежит: Aesculap AG

A method of controlling electrosurgical power delivery is based on a comparison of sensed tissue impedance to various impedance threshold values. Energy is delivered to tissue in a sealing cycle as a series of pulses. A pulse has a profile with a preset energy starting value that increases at a ramping rate to a preset end value. Sensed impedance data are monitored throughout each pulse and compared to each of an impedance threshold value for RF setpoint, an impedance threshold value for cumulative time, and an impedance threshold value for energy cutback. Based on sensed impedance during a pulse, the profile of a subsequent pulse can be modified. In the event of a high impedance event that reflects low tissue presence, energy may be cutback. A sealing cycle is stopped when a cumulative amount of time with an impedance value over the impedance cumulative time threshold value reaches a limit.

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Номер записи: 46
09-05-2013 дата публикации

ENERGY DELIVERY SYSTEMS AND USES THEREOF

Номер: US20130116679A1
Автор: Brace Christopher Lee, JR. Fred T., Lee, Schefelker Richard W., van der Weide Daniel Warren
Принадлежит: NeuWave Medical, Inc.

The present invention relates to comprehensive systems, devices and methods for delivering energy to tissue for a wide variety of applications, including medical procedures (e.g., tissue ablation, resection, cautery, vascular thrombosis, treatment of cardiac arrhythmias and dysrhythmias, electrosurgery, tissue harvest, etc.). In certain embodiments, systems, devices, and methods are provided for delivering energy to difficult to access tissue regions (e.g. peripheral lung tissues), and/or reducing the amount of undesired heat given off during energy delivery. 1. A method of treating a peripheral lung nodule comprising ablating said nodule by application of microwave energy.2. The method of claim 1 , wherein said microwave energy is delivered along a microwave delivery device.3. The method of claim 2 , wherein said microwave delivery device is inserted through the bronchial tree of a subject.4. A system comprising:a) a primary catheter, wherein said primary catheter comprises a primary lumen;b) a channel catheter, wherein said channel catheter is configured to fit within said primary lumen, and wherein said channel catheter comprises a channel lumen;c) a steerable navigation catheter, wherein said steerable navigation catheter is configured to fit within said channel lumen, and wherein said steerable navigation catheter comprises a steerable tip and position sensing element; andd) an energy delivery device, wherein said energy delivery device is configured to fit within said channel lumen.5. The system of claim 4 , wherein said primary catheter comprises a bronchoscope.6. The system of claim 4 , wherein said energy delivery device comprises a microwave ablation device.7. The system of claim 4 , further comprising a handle for manipulation of one or more of said primary catheter claim 4 , said channel catheter claim 4 , said steerable navigation catheter claim 4 , and said energy delivery device.8. The system of claim 4 , further comprising a processor operation of ...

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Номер записи: 47
09-05-2013 дата публикации

ELECTROSURGERY IRRIGATION PRIMER SYSTEMS AND METHODS

Номер: US20130116680A1
Автор: Marion Duane W., Woloszko Jean
Принадлежит: ARTHROCARE CORPORATION

Systems and methods are provided for priming or purging an electrosurgical fluid irrigation system. The electrosurgical system can include a high frequency power supply, a fluid delivery system, a handheld device having one or more electrodes, and one or more connectors for connecting the handheld device to the fluid delivery system and the RF generator. The electrosurgical system may be configured to deliver RF current and irrigation fluid until a threshold current level is detected, which is indicative of a continuous flow of fluid at the electrode and purging completion. The systems and methods of purging an electrosurgical system may further include dynamically controlling an RF output and fluid delivery system in accordance with varied parameters of detected threshold current levels. 1. An electrosurgical system comprising:a high frequency power supply;a fluid delivery system;a handheld device comprising at least one electrode; andat least one connector for connecting the handheld device to the fluid delivery system and the high frequency power supply, wherein the electrosurgical system is configured to deliver RF current and fluid until a threshold current level is detected, causing the fluid delivery system and high frequency power supply to deactivate.2. The system of claim 1 , wherein the electrosurgical system is configured to detect the threshold current level indicative of a presence of fluid at the electrode.3. The system of claim 2 , wherein the threshold current level is greater than about 50 mA.4. The system of claim 2 , wherein the threshold current level is greater than about 70 mA.5. The system of claim 1 , further comprising a sensor for detecting the threshold current level.6. The system of claim 5 , wherein the sensor comprises a set of detecting electrodes.7. The system of claim 1 , wherein the electrosurgical system is configured such that delivery of RF current and fluid automatically start once the handheld device is connected to the fluid ...

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Номер записи: 48
16-05-2013 дата публикации

MRI-GUIDED DEVICES AND MRI-GUIDED INTERVENTIONAL SYSTEMS THAT CAN TRACK AND GENERATE DYNAMIC VISUALIZATIONS OF THE DEVICES IN NEAR REAL TIME

Номер: US20130123598A1
Автор: Flores Jesse, Ghidoli Daniele, Jenkins Kimble L., Piferi Peter, Vij Kamal
Принадлежит: MRI Interventions, Inc.

An MRI-compatible catheter includes an elongated flexible shaft having opposite distal and proximal end portions. A handle is attached to the proximal end portion and includes an actuator in communication with the shaft distal end portion that is configured to articulate the shaft distal end portion. The distal end portion of the shaft may include an ablation tip and includes at least one RF tracking coil positioned adjacent the ablation tip that is electrically connected to an MRI scanner. The at least one RF tracking coil is electrically connected to a circuit that reduces coupling when the at least one RF tracking coil is exposed to an MRI environment. Each RF tracking coil is a 1-10 turn solenoid coil, and has a length along the longitudinal direction of the catheter of between about 0.25 mm and about 4 mm. 1. An MRI-compatible catheter , comprising:an elongated flexible shaft having a distal end portion and an opposite proximal end portion, wherein at least a portion of the flexible shaft is sized and configured to enter a patient during an MRI-guided medical procedure;an electrical connector interface attached to the shaft and configured to be in electrical communication with an MRI scanner;at least one RF tracking coil positioned adjacent the flexible shaft distal end portion, wherein the at least one tracking coil includes a conductive lead extending between the at least one RF tracking coil and the electrical connector interface and is configured to electrically connect the at least one tracking coil to an MRI scanner; andan ablation tip at the flexible shaft distal end portion, wherein an RF conductor extends longitudinally within the shaft to the electrical connector interface and connects the ablation tip to an RF generator.2. The device of claim 1 , further comprising a handle attached to the shaft proximal end portion claim 1 , and wherein the handle comprises a circuit electrically connected to the at least one RF tracking coil claim 1 , wherein the ...

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Номер записи: 49
16-05-2013 дата публикации

Skin Treatment Device Using Pulsed Electromagnetic Radiation

Номер: US20130123762A1
Автор: Brottier Vincent Yves
Принадлежит:

The skin treatment device comprises a housing, a flashlamp arranged inside the housing, the housing having an opening through which electromagnetic energy originating from the flashlamp can be transmitted towards a skin surface. The housing comprises: 114-. (canceled)16. The device according to claim 15 , comprising a communication passageway between the cavity and said aeration orifice claim 15 , said mobile component interfering with said communication passageway when said mobile component is moved from the first position to the second position.17. The device according to claim 15 , wherein the housing has:a first housing portion that comprises said opening; anda second housing portion allowing a displacement in translation between the first housing portion and the second housing portion, the flashlamp being integral with the second housing portion, the mobile component being formed by one of said first and second housing portions.18. The device according to claim 16 , in which the first housing portion is a head and the second housing portion forms a handle which can be grasped by a hand claim 16 , said mobile component making it possible to move the flashlamp towards the free end of the head when the head is supported on a surface outside the device.29. The device according to claim 15 , comprising inside the housing:a coupler making it possible to direct the electromagnetic energy originating from the flashlamp onto a skin surface; anda filter inserted between the flashlamp and the coupler, the flashlamp being arranged substantially opposite and at a distance from the filter for said first position.20. The device according to claim 15 , wherein the flashlamp is part of an expendable unit that can be removed from the housing.22. The device according to claim 20 , wherein the inside of the housing has a surface for guiding a flow of air parallel to the filter and from which said elongated component extends in a general direction perpendicular to the filter.23. ...

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Номер записи: 50
16-05-2013 дата публикации

DISSECTION HANDPIECE AND METHOD FOR REDUCING THE APPEARANCE OF CELLULITE

Номер: US20130123767A1
Автор: Brian, Chomas James E., Clark, III Ben F., III Robert L., Merchant Adnan I.
Принадлежит: CABOCHON AESTHETICS, INC.

A dermatological skin treatment device is provided. The device comprises a handpiece and a cutting tool, wherein the tool is inserted through the conduit and percutaneously inserted into a tissue disposed within a recessed area of the handpiece. The device and method cut the fibrous structures under the skin that cause cellulite at an angle substantially parallel to the surface of the skin and replace these structures with a non-cellulite forming structure by deploying a highly fibrous mesh through a single needle hole to create a highly fibrous layer directly or through wound healing processes. 155-. (canceled)56. A tissue treatment system , comprising:a handpiece having a tissue engaging structure defining a treatment region in which target tissue may be positioned, a vacuum source being applied to the engaging structure to elevate the target tissue in the treatment region relative to the surrounding tissue;a tool movably coupled to the handpiece so that a distal end of the tool is positionable in the treatment region for treating target tissue; anda guidance track operably connected to the handpiece, wherein the guidance track defines a predetermined shape and is configured to constrain a portion of the tool to move within a predetermined area such that the distal end of the tool moves within a subcutaneous region of a predetermined shape within the treatment region coincident with the predetermined shape.57. The tissue treatment system of claim 56 , wherein the tissue engaging structure has an apposition surface and the target tissue is elevated into contact with the apposition surface.58. The tissue treatment system of claim 57 , wherein the tool moves along a surface that is parallel to the apposition surface for treating the target tissue in the treatment region.59. The tissue treatment system of claim 56 , wherein a guide pin is attached to the tool claim 56 , the guide pin configured to engage the guidance track so that the tool is constrained to move ...

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Номер записи: 51
16-05-2013 дата публикации

Perfused Core Dielectrically Loaded Dipole Microwave Antenna Probe

Номер: US20130123772A1
Автор: Bonn Kenlyn S., Smith Ian S.
Принадлежит: Vivant Medical, Inc.

A microwave surgical ablation probe having an arrangement of coolant channels in fluid communication with a cooling chamber disposed within the distal end of the probe is disclosed. A hypotube having one or more longitudinal ribs extending radially inward from an inner surface thereof is coaxially disposed around a coaxial feedline. The longitudinal ribs of the hypotube engage an outer sheath of the feedline to define a fluid inflow channel to deliver coolant to the cooling chamber, and a fluid outflow channel to receive fluid from the cooling chamber. The cooling chamber may be formed from porous ceramic or porous metallic material that provides structural support to the probe while permitting coolant to circulate therethrough. The probe includes dielectric and choke members that are adapted to control the microwave radiation pattern (e.g., ablation shape), and which may provide improved coupling of the probe to tissue. 1. An ablation probe , comprising:a feedline having an outer sheath, an inner conductor, and an insulator coaxially disposed around the inner conductor, wherein the inner conductor extends distally beyond the outer sheath and the insulator;a hypotube coaxially disposed around the feedline having two longitudinal ribs that extend radially inward from an inner surface of the hypotube to an outer surface of the feedline to define an inflow fluid channel and an outflow fluid channel;a feed point seal operably coupled to a distal end of the hypotube and including a first opening and a second opening defined therethrough, each having a proximal end and a distal end, wherein the proximal end of the first opening is disposed in fluid communication with the inflow fluid channel and the proximal end of the second opening is disposed in fluid communication with the outflow fluid channel;a distal radiating section having a cylindrical outer dielectric surface, and a generally conical tip disposed at a distal end of the distal radiating section, the cylindrical ...

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Номер записи: 52
16-05-2013 дата публикации

Battery shut-off algorithm in a battery powered device

Номер: US20130123776A1
Автор: Alan E. Green, Clive Styler, David A. Snowdon, David I. Ruddenklau, David J. Stocks, Gavin M. Monson, Gordon J. Leather, Gregory A. Trees, John Hefin Bowen Evans, Paul C. Roberts, Paulo Alexandre de Torre Pinheiro, Robin M. Lee
Принадлежит: Ethicon Endo Surgery Inc

A medical instrument is disclosed. The medical instrument includes at least one electrical contact, a battery, a radio frequency (RF) generation circuit coupled to and operated by the battery and operable to generate an RF drive signal and to provide the RF drive signal to the at least one electrical contact, and a battery discharge circuit coupled to the battery. A processor is coupled to the battery discharge circuit and a memory is coupled to the processor. The memory stores machine executable instructions that when executed cause the processor to monitor activation of the RF generation circuit and disable the RF generation circuit when the RF drive signal is fired a predetermined number of times. The medical instrument may include an activation switch and/or a disposal switch supported by the housing.

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Номер записи: 53
23-05-2013 дата публикации

FLOW REDUCTION HOOD SYSTEMS

Номер: US20130131448A1
Автор: MILLER DAVID, PEH Ruey-Feng, ROTHE Chris A., SAADAT Vahid, Tam Edmund
Принадлежит: Voyage Medical, Inc.

Flow reduction hood systems are described which facilitate the visualization of tissue regions through a clear fluid. Such a system may include an imaging hood having one or more layers covering the distal opening and defines one or more apertures which control the infusion and controlled retention of the clearing fluid into the hood. In this manner, the amount of clearing fluid may be limited and the clarity of the imaging of the underlying tissue through the fluid within the hood may be maintained for relatively longer periods of time by inhibiting, delaying, or preventing the infusion of surrounding blood into the viewing field. The aperture size may be controlled to decrease or increase through selective inflation of the membrane or other mechanisms. 1. An apparatus configured to control fluid flow for visualization , comprising:a barrier projecting distally from a deployment catheter and defining an open area therein, wherein the open area is in fluid communication with at least one lumen defined through the catheter;at least one membrane extending over a distal opening defined by the barrier such that the membrane partially covers the open area and further defines at least one aperture through the membrane, wherein the aperture has a size which is less than a diameter of the membrane to control a flow of a clearing fluid through the aperture and to an environment external to the barrier, the fluid being infused within the open area via the at least one lumen; andan imaging element positioned to image the open area through the clearing fluid.2. The apparatus of further comprising an energizable element positioned proximal to the aperture.3. The apparatus of wherein the energizable element is advanceable through the open area.4. The apparatus of wherein the energizable element positioned within the open area.5. The apparatus of wherein the energizable element is energized via RF energy.6. The apparatus of wherein the aperture is controllable to variably alter ...

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Номер записи: 54
23-05-2013 дата публикации

MRI-GUIDED CATHETERS

Номер: US20130131496A1
Автор: Flores Jesse, Ghidoli Daniele, Jenkins Kimble L., Karmarkar Parag V., Pandey Rajesh, Piferi Peter, Vij Kamal
Принадлежит: MRI Interventions, Inc.

An MRI-compatible catheter that reduces localized heating due to MR scanner-induced currents includes an elongated flexible shaft having a distal end portion and an opposite proximal end portion. A handle is attached to the proximal end portion and includes an electrical connector interface configured to be in electrical communication with an MRI scanner. One or more RF tracking coils are positioned adjacent the distal end portion of the shaft. Each RF tracking coil includes a conductive lead, such as a coaxial cable, that extends between the RF tracking coil and the electrical connector interface and electrically connects the RF tracking coil to an MRI scanner. In some embodiments of the present invention, the conductive lead has a length sufficient to define an odd harmonic/multiple of a quarter wavelength of the operational frequency of the MRI Scanner, and/or includes a series of pre-formed back and forth segments along its length. 1. An MRI-compatible catheter , comprising:an elongated flexible shaft having a distal end portion, and an opposite proximal end portion;an electrical connector interface configured to be in electrical communication with an MRI scanner; andat least one RF tracking coil positioned adjacent the distal end portion of the flexible shaft, wherein the at least one tracking coil includes a conductive lead extending between the at least one RF tracking coil and the electrical connector interface and configured to electrically connect the at least one tracking coil to the MRI scanner, and wherein the conductive lead includes a series of pre-formed back and forth segments along its length.2. The catheter of claim 1 , wherein the conductive lead is a coaxial cable.3. The catheter of claim 1 , wherein the at least one RF tracking coil comprises a plurality of tracking coils claim 1 , each attached to a separate conductive lead claim 1 , and wherein each conductive lead includes a series of back and forth segments along its length.4. The catheter ...

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Номер записи: 55
23-05-2013 дата публикации

Recanalizing occluded vessels using radiofrequency energy

Номер: US20130131513A1
Автор: Osamu Katoh, Wayne Ogata
Принадлежит: RetroVascular Inc

A method and systems for treating chronic total occlusions, particularly those that are difficult to treat, is disclosed. In this approach, recanalizing the CTO is achieved using a combined antegrade and retrograde approach. The proximal end of the occlusion is penetrated using an antegrade wire, using a traditional approach. Using collateral vessels, the distal end of the occlusion is crossed in a retrograde fashion. By appropriately maneuvering each member and applying radiofrequency energy between the proximal and distal ends of the occlusion, a continuous channel is created.

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Номер записи: 56
23-05-2013 дата публикации

BATTERY INITIALIZATION CLIP

Номер: US20130131660A1
Автор: Chan Wai T., Evans John Hefin Bowen, Green Alan E., Hares Luke David Ronald, Leather Gordon J., Lee Robin M., Monson Gavin M., Roberts Paul C., Ruddenklau David I., Stocks David J., Trees Gregory A., Wilkins Rebecca A.
Принадлежит: Ethicon Endo-Surgery, Inc.

A medical instrument is disclosed. The medical instrument includes a housing, a control lever rotatably coupled to the housing, at least one electrical contact, a radio frequency (RF) generation circuit coupled to and operated by the battery and operable to generate an RF drive signal and to provide the RF drive signal to the at least one electrical contact and an initialization clip coupled to housing and the control lever to prevent operation of the RF generation circuit and movement of the control lever. 1. A medical instrument comprising:a housing;a control lever rotatably coupled to the housing;at least one electrical contact;a radio frequency (RF) generation circuit coupled to and operated by the battery and operable to generate an RF drive signal and to provide the RF drive signal to the at least one electrical contact; andan initialization clip coupled to housing and the control lever to prevent operation of the RF generation circuit and movement of the control lever.2. The medical instrument according to claim 1 , wherein the initialization clip comprises a first half and a second half fastened by at least one mechanical fastening element.3. The medical instrument according to claim 2 , comprising:a battery; anda battery connection circuit coupled to the battery;wherein when the initialization clip is attached to the housing, the battery connection circuit electrically disconnects the battery from the RF generation circuit.4. The medical instrument according to claim 3 , wherein when the initialization clip is removed from the housing claim 3 , the battery connection circuit electrically couples the battery to the RF generation circuit.5. The medical instrument according to claim 3 , comprising:a remotely activated switch element coupled between the battery and the battery connection circuit; anda remote switch activation element supported by the initialization clip.6. The medical instrument according to claim 5 , wherein the remotely activated switch ...

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Номер записи: 57
23-05-2013 дата публикации

METHODS AND SYSTEMS FOR DETERMINING PHYSIOLOGIC CHARACTERISTICS FOR TREATMENT OF THE ESOPHAGUS

Номер: US20130131661A1
Автор: Jackson Jerome, Stern Roger A.
Принадлежит: COVIDIEN LP

A method and apparatus for treating abnormal mucosa in the esophagus is disclosed, such that the depth of the treated tissue is controlled. The depth of ablation is controlled by monitoring the tissue impedance and/or the tissue temperature. A desired ablation depth is also achieved by controlling the energy density or power density, and the amount of time required for energy delivery. A method and apparatus is disclosed for measuring an inner diameter of a body lumen, where a balloon is inflated inside the body lumen at a fixed pressure. 1. An apparatus for treating an esophagus , comprising:a generator having a source of RF energy connected to an generator electrical connector and a pump connected to a generator pneumatic connector; anda sizing and treatment catheter having a proximal end and a distal end, an electrical connector configured for attachment to the generator electrical connector and a pneumatic connector on the proximal end configured for attachment to the generator pneumatic connector and a balloon on the distal end of the catheter in communication with the pneumatic connector and an electrode array on an exterior surface of the balloon in communication with the electrical connector;wherein, when the sizing and treatment catheter is connected to the generator electrical connector and the generator pneumatic connector, the generator is configured to determine a dimension of the esophagus by inflating the sizing and treatment catheter to a sizing pressure and to deliver sufficient energy to the electrode array for treatment of the esophagus based on the dimension of the esophagus determined by the generator.2. An apparatus for treating an esophagus according to claim 1 , wherein the generator is further configured to deflate the sizing and treatment catheter after delivery of energy to the electrode array.3. An apparatus for treating an esophagus according to claim 1 , wherein the generator is configured to use a sizing pressure of between about 1 ...

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Номер записи: 58
23-05-2013 дата публикации

Articulating ablation device and method

Номер: US20130131670A1
Автор: Mani N. Prakash
Принадлежит: Vivant Medical LLC

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

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Номер записи: 59
30-05-2013 дата публикации

CATHETERS FOR IMAGING AND ABLATING TISSUE

Номер: US20130137980A1
Автор: BAUTISTA Richard, Moore Thomas C., Waters Kendall R., ZELENKA Robert
Принадлежит: ACIST MEDICAL SYSTEMS INC.

An ultrasound catheter includes an elongated body, a first and second ablation element each configured to ablate soft tissue and an imaging core having an ultrasound transducer. In another example, an ultrasound catheter includes an elongated body, a RF ablator configured to ablate soft tissue at a frequency less than 1 MHz, and an ultrasound transducer configured to image at a frequency greater than or equal to 10 MHz. In another example, an ultrasound catheter apparatus includes an ultrasound catheter having an ablator and an ultrasound transducer, and a graphical user interface displayed using a computer processor. The graphical user interface displays a real-time image of a treatment area and the ultrasound catheter, and a chart displaying ablation as a function of time, the chart being updated in real-time. 1. An ultrasound catheter comprising:an elongated body, the elongated body having a longitudinal dimension, a distal end and an imaging core lumen;first and second ablation elements each configured to ablate soft tissue; andan imaging core having an ultrasound transducer.2. The catheter of claim 1 , wherein the ultrasound transducer is rotatable relative to the elongated body.3. The catheter of claim 1 , wherein the imaging core further includes a mirror claim 1 , the mirror being rotatable relative to the elongated body and the ultrasound transducer being rotationally fixed relative to the elongated body.4. The catheter of claim 1 , further comprising a first bearing that restricts longitudinal displacement of the ultrasound transducer within the elongated body.5. The catheter of claim 4 , wherein the first bearing is fixed to the elongated body proximal to the ultrasound transducer.6. The catheter of claim 4 , further comprising a second bearing claim 4 , wherein the first and second bearings are fixed to the elongated body claim 4 , the first bearing located proximal to the ultrasound transducer and the second bearing located distal to the ultrasound ...

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Номер записи: 60
30-05-2013 дата публикации

METHODS AND DEVICES TO MODULATE THE AUTONOMIC NERVOUS SYSTEM VIA THE CAROTID BODY OR CAROTID SINUS

Номер: US20130138095A1
Автор: Gertner Michael
Принадлежит: Kona Medical, Inc.

In some embodiments, sympathetic nerves surrounding arteries or leading to organs are targeted with energy sources to correct or modulate physiologic processes. In some embodiments, different types of energy sources are utilized singly or combined with one another. In some embodiments, bioactive agents or devices activated by the energy sources are delivered to the region of interest and the energy is enhanced by such agents. 119-. (canceled)20. A method to modulate an autonomic nerve in a patient comprising:positioning an energy delivery device at a position for delivery of energy to a carotid body or carotid sinus;determining a position of the carotid body or the carotid sinus relative to the position of the energy delivery device;determining a dose and a direction for the energy using the determined position of the carotid body or the carotid sinus relative to the position of the energy delivery device; anddelivering the energy from the energy delivery device to the carotid body or the carotid sinus.21. The method of claim 20 , wherein the act of positioning the energy delivery is performed via percutaneous access.22. The method of claim 20 , wherein the act of positioning the energy delivery device comprises placing the energy delivery device in a jugular vein.23. The method of claim 20 , wherein the act of positioning the energy deliver device comprises placing the energy delivery device in a carotid artery.24. The method of claim 20 , wherein the energy delivery device is configured to deliver radiofrequency energy claim 20 , and the act of delivering the energy comprises delivering the radiofrequency energy.25. The method of claim 20 , wherein the energy is delivered from outside a skin of the patient to the carotid body or the carotid sinus.26. The method of claim 20 , wherein the energy is delivered to the carotid body claim 20 , not the carotid sinus.27. The method of claim 20 , further comprising determining a functioning of an autonomic nervous system ...

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Номер записи: 61
30-05-2013 дата публикации

SURGICAL INSTRUMENT AND SYSTEM

Номер: US20130138096A1
Автор: BENN Christopher Charles
Принадлежит: GYRUS MEDICAL LIMITED

A surgical instrument comprises a housing, an end effector carried by the housing, and one or more connections adapted to connect the surgical instrument to a controller such as an electrosurgical generator. The housing includes a plurality of handswitches located at different rotational positions around the housing. The handswitches comprise two handswitch sets the handswitches of each set being connected in to common so as to send the same signal to the controller whichever one of the handswitches is activated. In this way a user of the surgical instrument can send signals to the controller using any of the handswitches within a particular set, depending on the orientation of the surgical instrument. 1. A surgical instrument including a housing , an end effector carried by the housing , and at least one or more connection adapted to connect the surgical instrument to a controller and communicate therewith , the housing further including a plurality of handswitches , at least two or more of the handswitches being located at different rotational positions around the housing , the at least two handswitches being connected in common so as to send the same signal to the controller whichever one of the at least two handswitches is activated , such that a user of the surgical instrument can send to signals to the controller using any of the two or more handswitches depending on the orientation of the surgical instrument.2. A surgical instrument according to claim 1 , wherein the plurality of handswitches includes at least three handswitches connected in common and located at different rotational positions around the housing.3. A surgical instrument according to claim 1 , wherein the plurality of handswitches includes at least first and second sets of handswitches claim 1 , each including at least two handswitches connected in common and located at different rotational positions around the housing claim 1 , each of the first set of handswitches being adapted to send a ...

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Номер записи: 62
30-05-2013 дата публикации

SYSTEM AND METHOD TO DETECT PATIENT RETURN ELECTRODE CONNECTION IN AN RF ABLATION SYSTEM

Номер: US20130138097A1
Автор: Mathur Charu P., Sherman Marshall L.
Принадлежит: MEDTRONIC ABLATION FRONTIERS LLC

A medical device is provided, including an ablation system with a generator, at least one ablation element, a patient return electrode, and a feedback system to verify and monitor the electrical connection between the generator and the patient return electrode, as well as contact of the patient return electrode with the patient. The medical system sends a test signal to the patient return electrode prior to the delivery of ablation energy. If the response to the test signal indicates that the connection of the patient return electrode is absent, intermittent, or of low quality, the medical device may also provide notice, a warning or alarm. 1. A medical system , comprising:a catheter having an ablation element;a radiofrequency generator connected to the catheter;a patient return electrode connected to the generator;wherein the generator is operable to deliver radiofrequency ablation energy to the ablation element and to deliver a radiofrequency test signal to the ablation element, wherein the power delivered by said test signal is insufficient to ablate tissue; anda feedback system connected to the generator and the patient return electrode, the feedback system operating to measure a signal from the patient return electrode when the generator is delivering the radiofrequency test signal.2. The medical system according to claim 1 , further comprising a processor connected to the generator and the feedback system claim 1 , wherein the processor is operable to calculate an expected value of the signal from the patient return electrode and compare it to the measured signal from the patient return electrode.3. The medical system according to claim 2 , wherein the processor is programmed to calculate a ratio of the measured signal from the patient return electrode divided by the expected value of the signal from the patient return electrode claim 2 , and compare it to a preselected threshold.4. The medical system according to claim 3 , wherein the preselected threshold ...

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Номер записи: 63
06-06-2013 дата публикации

METHODS FOR TREATING BARRETT'S METAPLASIA AND ESOPHAGEAL ADENOCARCINOMA

Номер: US20130143222A1
Автор: Corcoran Brendan, Ellsworth Eric Matthew Gayle, Finkelstein Sydney David, Jackson Sara Ann, JR. Dennis Morgan, Smith
Принадлежит: RedPath Integrated Pathology, Inc

Disclosed herein are methods for treating Barrett's metaplasia and esophageal adenocarcinoma and methods for determining mutational load as a predictor of the risk of disease progression from Barrett's metaplasia to esophageal adenocarcinoma. 1. A method for determining mutational load as a predictor of the risk of disease progression from Barrett's metaplasia to esophageal adenocarcinoma in a subject , the method comprising:amplifying DNA sequences from a biological specimen from the subject;detecting mutations in microsatellite regions of the amplified DNA sequences;categorizing clonality of each mutation;calculating a mutational load based on the sum of low and high clonality mutations;comparing the mutational load with a series of pre-determined mutational load cut-offs defining risk categories; andassigning the subject to a risk category corresponding to the subject's mutational load, wherein each risk category is indicative of the risk of disease progression.2. The method of claim 1 , wherein the pre-determined mutational load cut-offs defining risk categories are derived from a pre-determined patient population distribution with known mutational loads corresponding to a known disease state diagnosis.3. The method of claim 2 , wherein the known disease state diagnosis is selected from normal squamous claim 2 , columnar epithelium without Barrett's metaplasia claim 2 , Barrett's metaplasia claim 2 , Barrett's metaplasia intermediate for dysplasia claim 2 , low grade dysplasia and high grade dysplasia.4. The method of claim 2 , wherein the risk categories are selected from no mutational load claim 2 , low mutational load claim 2 , and high mutational load.5. The method of claim 4 , wherein the subject is assigned to the no mutational load risk category when the subject has mutational load of 0.0.6. The method of claim 4 , wherein the wherein no mutational load is indicative of no risk of disease progression from Barrett's metaplasia to esophageal adenocarcinoma. ...

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Номер записи: 64
06-06-2013 дата публикации

Microwave surgical device

Номер: US20130144286A1
Автор: Iginio Longo
Принадлежит: Consiglio Nazionale delle Richerche CNR

A microwave surgical device with high energy efficiency produces, at an antenna, an asymmetric heating pattern directed towards the side and it comprises: a plain curved portion extending from the distal end of said external conductor; and an inflection point at said distal end of the external conductor, so that said curved portion has a single cavity directed towards the axis of the coaxial end part.

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Номер записи: 65
13-06-2013 дата публикации

Treatment tip incision template

Номер: US20130150843A1
Автор: Norberto Berna, Vincenzo Crudo
Принадлежит: Individual

A shape and depth template for incisions with treatment tips, usable in treatments such as bone surgery, comprising a guiding body for a treatment tip provided with two mutually opposite end surfaces arranged at a preset distance and a lateral surface, one of the end surfaces being arrangeable at the treatment tip incision region and with a hole that of preset shape that passes there through from one end surface to the other.

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Номер записи: 66
13-06-2013 дата публикации

Systems and Methods for Creating an Effect Using Microwave Energy to Specified Tissue

Номер: US20130150844A1
Автор: DEEM Mark E., Francis Daniel, Hallock Daniel, Johnson Jessi Ernest, Kim Steven, Salamini Alexey, Smith Peter, Su Ted
Принадлежит:

Systems, methods and devices for creating an effect using microwave energy to specified tissue are disclosed. A system for the application of microwave energy to a tissue includes a signal generator adapted to generate a microwave signal having predetermined characteristics, an applicator connected to the generator and adapted to apply microwave energy to tissue. The applicator includes one or more microwave antennas and a tissue interface, a vacuum source connected to the tissue interface, a cooling source connected to the tissue interface, and a controller adapted to control the signal generator, the vacuum source, and the coolant source. The tissue includes a first layer and a second layer, the second layer below the first layer. The controller is configured so that the system delivers energy such that a peak power loss density profile is created in the second layer. 1. A method of creating a lesion in target tissue in a dermal layer of skin wherein the skin has at least a dermal layer and a sub-dermal layer , the method comprising the steps of:positioning a device adapted to radiate microwave energy on an external surface of the skin adjacent the target tissue;radiating microwave energy into the target tissue at a frequency between about 5.0 GHz and about 6.5 GHz,the microwave energy being radiated in a TEM mode,the microwave energy having an electric field component which is substantially parallel to a region of the external surface of the skin;removing heat from the external surface of the skin; andgenerating heat in the target tissue through dielectric heating to create the lesion.2. The method of claim 1 , wherein the microwave energy has a frequency of approximately 5.8 GHz.3. The method of claim 1 , wherein the electromagnetic energy radiates in a TE10 mode.4. The method of claim 1 , wherein the target tissue includes sweat glands.5. The method of claim 4 , wherein heating the sweat glands results in a reduction in the symptoms of hyperhidrosis. This ...

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Номер записи: 67
13-06-2013 дата публикации

System and Method for Monitoring Ablation Size

Номер: US20130150845A1
Автор: Brannan Joseph D.
Принадлежит: Vivant Medical, Inc.

A system for monitoring ablation size is provided and includes a power source including a microprocessor for executing at least one control algorithm. A microwave antenna is configured to deliver microwave energy from the power source to tissue to form an ablation zone. An ablation zone control module is in operative communication with a memory associated with the power source. The memory includes one or more data look-up tables including data pertaining to a control curve varying over time and being representative of one or more electrical parameters associated with the microwave antenna. Points along the control curve correspond to a value of the electrical parameters and the ablation zone control module triggers a signal when a predetermined threshold value of the electrical parameter(s) is measured corresponding to the radius of the ablation zone. 1. A method for monitoring temperature of tissue undergoing ablation , the method comprising:transmitting microwave energy from a power source to a microwave antenna to form a tissue ablation zone;monitoring reflected power associated with the microwave antenna as the tissue ablation zone forms;communicating a control signal to the power source when a predetermined reflected power is reached at the microwave antenna; andadjusting the amount of microwave energy from the power source to the microwave antenna.2. A method according to claim 1 , wherein the step of monitoring tissue further includes the step of providing an ablation zone control module in operative communication with a memory associated with the power source claim 1 , the memory including at least one data look-up table including data pertaining to a control curve varying over time and being representative of at least one electrical parameter associated with the microwave antenna claim 1 , points along the control curve corresponding to a value of the at least one electrical parameter claim 1 ,wherein the ablation zone control module triggers a signal when ...

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Номер записи: 68
13-06-2013 дата публикации

ELECTROSURGICAL INSTRUMENT AND SYSTEM

Номер: US20130150849A1
Автор: CURTIS Richard James, Morris David Wyn
Принадлежит: GYRUS MEDICAL LIMITED

An electrosurgical system includes an electrosurgical instrument and an electrosurgical generator, the instrument having a longitudinal axis and including at least first, second and third electrodes. The electrodes are spaced from each other by one or more insulating members therebetween, the spacing between the first and third electrodes being greater than that between the first and second electrodes. The electrosurgical generator includes a source of radio frequency energy capable of producing either a coagulating RF waveform or a cutting RF waveform and has first second and third output connections connected to the first, second and third electrodes respectively of the electrosurgical instrument. The generator further includes a switching means, and a controller, the controller being such that when a cutting RF waveform is selected, the switching means directs the cutting RF waveform between the first and second output connections and hence the first and second electrodes. When a coagulating RF waveform is selected, the switching means directs the coagulating RF waveform between the first and third output connections and hence the first and third electrodes. 19.-. (canceled)10. An electrosurgical instrument including at least first , second and third electrodes in fixed relationships to each other , the electrodes being spaced from each other by insulating members therebetween , the first electrode having a characteristic such that it is adapted to constitute an active electrode , the second electrode having a characteristic such that it is adapted to constitute a first return electrode , and the third electrode having a characteristic such that it is adapted to constitute a second return electrode , the instrument having first , second and third connections , the first connection being connected solely to the first electrode , the second connection being connected solely to the second electrode and the third electrode being connected solely to the third ...

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Номер записи: 69
20-06-2013 дата публикации

ENERGY APPLICATION APPARATUS FOR APPLYING ENERGY TO AN OBJECT

Номер: US20130158537A1
Автор: Deladi Szabolcs, Gijsbers Gerardus Henricus Maria, Harks Godefridus Antonius, Suijver Jan Frederik
Принадлежит: KONINKLIJKE PHILIPS ELECTRONICS N.V.

The invention relates to an energy application apparatus for applying energy to an object. A plurality of energy application elements () applies energy to the object at different locations and at least one ultrasound element () generates an ultrasound signal being indicative of a property of the object at the different locations, wherein at least one energy application element is individually controlled depending on an energy application influence, in particular, an ablation depth, determined for the location at which the at least one energy application element applies energy from the ultrasound signal. Thus, at least one local control point for applying energy to the object is provided, thereby improving the control of applying energy to the object. 1. An energy application apparatus for applying energy to an object , the energy application apparatus comprising:a plurality of energy application elements for applying energy to the object at different locations,at least one ultrasound element for generating an ultrasound signal being indicative of a property of the object at the different locations,an energy application influence determining unit for determining an energy application influence of the applied energy to the different locations from the generated ultrasound signal,{'b': '4', 'a control unit for individually controlling at least one energy application element () depending on the energy application influence determined for the location at which the at least one energy application element applies energy.'}2. (canceled)3. The energy application apparatus as defined in claim 1 , wherein the energy application elements are ablation electrodes for creating a lesion line.41214183. The energy application apparatus as defined in claim 1 , wherein the energy application apparatus () comprises a catheter () for introducing the plurality of energy application elements () and the at least one ultrasound element () into the object ().521. The energy application ...

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Номер записи: 70
20-06-2013 дата публикации

Pre-formed curved ablation catheter

Номер: US20130158538A1
Автор: Assaf Govari
Принадлежит: Biosense Webster Israel Ltd

A medical device includes an insertion tube, having a longitudinal axis and having a distal end adapted for insertion through a body passage into a cavity within a body of a patient. An electrode is located on the distal end of the insertion tube and is configured to contact tissue in the cavity. A resilient member is contained within the distal end of the insertion tube and is configured, when unconstrained, to cause the distal end to bend away from the longitudinal axis in a curved shape and to straighten toward the longitudinal axis when subjected to a force.

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Номер записи: 71
20-06-2013 дата публикации

PRE-FORMED CURVED ABLATION CATHETER

Номер: US20130158539A1
Автор: Govari Assaf
Принадлежит: BIOSENSE WEBSTER (ISRAEL), LTD.

A medical device includes an insertion tube, having a longitudinal axis and having a distal end adapted for insertion through a body passage into a cavity within a body of a patient. An electrode is located on the distal end of the insertion tube and is configured to contact tissue in the cavity. A resilient member is contained within the distal end of the insertion tube and is configured, when unconstrained, to cause the distal end to bend away from the longitudinal axis in a curved shape and to straighten toward the longitudinal axis when subjected to a force. 1. A method for medical treatment , comprising:inserting a sheath, having a longitudinal axis and a distal opening, through a body passage into a cavity within a body of a patient;inserting into the sheath a catheter having a resilient distal end that is formed so that, when unconstrained, the distal end bends away from the longitudinal axis in a curved shape, and when subjected to a force, the distal end straightens toward the longitudinal axis;advancing the catheter through the sheath so that the distal end of the catheter passes through the distal opening of the sheath into the cavity and assumes the curved shape;manipulating the catheter within the cavity so that the distal end contacts tissue in the cavity; andmoving the catheter within the sheath while the distal end contacts the tissue so as to cause the distal end to trace a desired path along the tissue.2. The method according to claim 1 , wherein moving the catheter comprises rotating the catheter about the axis.3. The method according to claim 1 , wherein the cavity comprises a blood vessel claim 1 , and wherein rotating the catheter causes the distal end to trace a circular path around an internal circumference of the blood vessel.4. The method according to claim 3 , wherein inserting the sheath comprises passing the sheath percutaneously through a vascular system of the patient into a left atrium of a heart of the patient claim 3 , and wherein ...

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Номер записи: 72
20-06-2013 дата публикации

METHOD OF TREATING TISSUE WITH RADIO FREQUENCY VASCULAR ELECTRODE ARRAY

Номер: US20130158540A1
Автор: McKenna Erin, Oyola Arnold E.
Принадлежит: BOSTON SCIENTIFIC SCIMED, INC.

A method of treating a patient is provided. The method comprises delivering an electrically conductive material within a vascular network, wherein the electrically conductive material embolizes in a region of the vascular network to form a vascular electrode array that assumes a geometry of the embolized region of the vascular network. The method may optionally comprise delivering a containment agent within the vascular network proximal to the delivered electrically conductive material to stabilize the vascular electrode array. The method further comprises applying electrical energy (e.g., radio frequency (RF) energy) to the vascular electrode array to therapeutically conduct electrical energy into a region of the targeted tissue adjacent the embolized region of the vascular network. 1. A method of treating targeted tissue adjacent a physiological vascular network contoured to the general shape and size of the targeted tissue , comprising:delivering a flowable self-embolizing material within the vascular network, wherein a portion of the material self-embolizes in a region of the vascular network to form a continuous multi-tined vascular array that assumes a geometry of the embolized region of the vascular network; andapplying energy to the vascular array to thermally treat a region of the targeted tissue adjacent the embolized region of the vascular network.2. The method of claim 1 , wherein the embolized region of the vascular network comprises the entirety of the vascular network claim 1 , and the adjacent region of the targeted tissue comprises the entirety of the targeted tissue.3. The method of claim 1 , wherein the vascular network carries blood.4. The method of claim 1 , wherein the vascular network supplies blood to the targeted tissue.5. The method of claim 1 , wherein the self-embolizing material is introduced into the vascular network and the energy is applied to the vascular array via a single probe.6. The method of claim 1 , wherein the energy is radio ...

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Номер записи: 73
27-06-2013 дата публикации

Hair Treatment System and Method

Номер: US20130165912A1
Автор: Jay Harvey
Принадлежит:

A hand held device generates a predetermined number of pulses of electromagnetic radiation having a predetermined electromagnetic spectrum, a predetermined duration, a predetermined inter-pulse interval, and a predetermined total energy. The pulse sequence is delivered to a skin surface to reduce or eliminate Xray or ultraviolet radiation damage to the skin surface. 166-. (canceled)67. A method for treating a skin area of a human subject , the skin area including a surface portion and hair wholly below the surface portion , comprising:administering to the subject at the skin area sufficient light to retard growth of the hair,the sufficient light including a first light application and a second light application, andthe first light application and the second light application separated by a time period, andthe time period extending for a duration less than the amount of time required for protruding growth of the hair following the first light application absent any light application following the first light application.68. The method of claim 67 , wherein the first light application includes sufficient light to retard growth of the hair.69. The method of claim 67 , wherein the second light application includes sufficient light to retard hair growth of the hair.70. The method of claim 67 , wherein the first light application includes sufficient light to retard growth of the hair and the second light application includes sufficient light to retard growth of the hair.71. The method of claim 67 , wherein the duration is less than the amount of time required for any protruding growth of hair within the skin area following the first light application and absent any light application following the first light application.72. A hair treatment method comprising:applying light to a hair before the hair protrudes above the skin,the light delivered in two separate applications sufficient to retard growth of the hair as compared to the protruding growth of the hair absent any ...

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Номер записи: 74
27-06-2013 дата публикации

ENERGY DELIVERY SYSTEMS AND USES THEREOF

Номер: US20130165915A1
Автор: Brace Christopher Lee, Schefelker Richard W., Thiel Matthew J., Thom Mark
Принадлежит: NeuWave Medical, Inc.

The present invention relates to comprehensive systems, devices and methods for delivering energy to tissue for a wide variety of applications, including medical procedures (e.g., tissue ablation, resection, cautery, vascular thrombosis, treatment of cardiac arrhythmias and dysrhythmias, electrosurgery, tissue harvest, etc.). In certain embodiments, systems, devices, and methods are provided for treating a tissue region (e.g., a tumor) through application of energy. 2. The device of claim 1 , wherein said inner conductor is capacitively-coupled to said conductive tip.3. The device of claim 1 , wherein said antenna comprises a conducive outer conductor surrounding at least a portion of said inner conductor.4. The device of claim 3 , wherein said antenna comprises a dielectric material between said inner and outer conductors.5. The device of claim 1 , wherein said antenna is a triaxial antenna.6. The device of claim 1 , wherein said conductive tip comprises a trocar.7. The device of claim 1 , wherein said inner conductor comprises a first region distal to a second region claim 1 , said second region distal to a third region claim 1 , wherein said third region is contained in a triaxial antenna claim 1 , wherein said second region lacks an outer conductor of said triaxial antenna claim 1 , and wherein said first region lacks an outer conductor and dielectric material so said triaxial antenna.8. The device of claim 7 , wherein said first region is adhered to and surrounded by a metal fitting.9. The device of claim 8 , wherein said metal fitting is a brass metal fitting.10. The device of claim 8 , wherein said metal fitting extends distally beyond the most distal end of said inner conductor.11. The device of claim 8 , wherein said metal filling abuts a dielectric material surrounding the inner conductor in the second region.12. The device of claim 7 , wherein said second region comprises a proximal portion containing dielectric material of said triaxial antenna and a ...

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Номер записи: 75
27-06-2013 дата публикации

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

Номер: US20130165916A1
Автор: MATHUR PRABODH, MOADDEB SHAHRAM, NASSIF RABIH
Принадлежит: Vessix Vascular, Inc.

Medical devices and methods for making and using the same are disclosed. An example method may include a method for treating tissue near a body passageway using an apparatus including a catheter having a plurality of electrodes, a radio-frequency energy generator, and a controller coupling the energy generator to the plurality of electrodes and configured to selectively energize the electrodes. The method may include using the apparatus to subject the tissue near the body passageway to a plurality of energy treatment cycles. The treatment cycle may include determining desired voltages for at least a subset of the electrodes for maintaining a predetermined target temperature profile proximate the subset of electrodes, setting an output voltage of the energy generator to correspond to the desired voltage determined for one of the electrodes, and energizing at least some of the electrodes at the output voltage to deliver energy to the body passageway. 1. A method for treating tissue near a body passageway using an apparatus including a catheter having a plurality of electrodes , a radio-frequency energy generator , and a controller coupling the energy generator to the plurality of electrodes and configured to selectively energize the electrodes , the method comprising: (i) determining desired voltages for at least a subset of the electrodes for maintaining a predetermined target temperature profile proximate the subset of electrodes;', '(ii) setting an output voltage of the energy generator to correspond to the desired voltage determined for one of the electrodes;', '(iii) energizing at least some of the electrodes at the output voltage to deliver energy to the body passageway;, '(a) using the apparatus to subject the tissue near the body passageway to a plurality of energy treatment cycles, wherein a treatment cycle comprises(b) wherein the electrode used to set the output voltage changes in subsequent treatment cycles in at least some instances.2. The method of claim ...

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Номер записи: 76
27-06-2013 дата публикации

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

Номер: US20130165917A1
Автор: MATHUR PRABODH, MOADDEB SHAHRAM, NASSIF RABIH
Принадлежит: Vessix Vascular, Inc.

Medical devices and methods for making and using the same are disclosed. An example method may include renal-denervation treatment method. The method may include delivering an RF energy treatment to a tissue proximate a renal artery using a catheter assembly of a renal denervation catheter system. The denervation system may include an RF energy generator coupled with the catheter assembly by a controller. The method may also include applying neural activity stimulation to the tissue proximate the renal artery using the catheter assembly, assessing stimulated neural activity response of the tissue using the catheter assembly, and determining a parameter of the RF energy treatment based on the assessed neural activity. 1. A renal-denervation treatment method , comprising:(a) delivering an RF energy treatment to a tissue proximate a renal artery using a catheter assembly of a renal denervation catheter system, wherein the denervation system includes an RF energy generator coupled with the catheter assembly by a controller;(b) applying neural activity stimulation to the tissue proximate the renal artery using the catheter assembly;(c) assessing stimulated neural activity response of the tissue using the catheter assembly; and(d) determining a parameter of the RF energy treatment based on the assessed neural activity.2. The method of claim 1 , further comprising outputting data relating to the assessed neural activity.3. The method of claim 2 , wherein outputting data comprises outputting whether a sufficient decrease in neural activity has occurred.4. The method of claim 1 , wherein assessing the neural activity comprises taking at least a first neural activity measurement and a second neural activity measurement.5. The method of claim 4 , wherein taking the first neural activity measurement comprises taking the first neural activity measurement before beginning the delivery of the RF energy treatment to establish a base line neural activity measurement; wherein taking ...

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Номер записи: 77
27-06-2013 дата публикации

Impedance responsive ablation rf driving for moderating return electrode temperature

Номер: US20130165919A1
Автор: Gordon Epstein
Принадлежит: Halt Medical Inc

The inventive method for ablating a tissue mass associated with a human or animal patient being treated comprises positioning an ablating electrode in a tissue mass to be ablated. A plurality of return electrodes are positioned on the patient. Electrical energy is applied between the return electrodes and the ablating electrode. The temperature of the return electrodes is measured to generate a temperature measurement signal which is used to control ablation current through the return electrodes.

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Номер записи: 78
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: 79
04-07-2013 дата публикации

Systems and methods using sensors that resonate at a frequency equal to a resonance frequency of an ablated tissue

Номер: US20130172868A1
Автор: Bonfeld
Принадлежит:

A method is provided of tissue ablation during a tissue ablation procedure. Ablation energy is applied by using a tissue ablation device to create an ablation at a tissue site. An ablation endpoint at the tissue site is detected by using an ablation endpoint device with one or more sensors that are positioned to monitor the ablation. The one or more sensors are selected from at least one of, a piezoelectric and a silicon MEMS sensor. Upon detecting the ablation endpoint, delivery of ablation energy to the tissue site ceases. 1. A method of tissue ablation during a tissue ablation procedure , comprising: apply ablation energy by using a tissue ablation device to create an ablation at a tissue site; anddetecting an ablation endpoint at the tissue site by using an ablation endpoint device with one or more sensors that are positioned to monitor the ablation, the one or more sensors being selected from at least one of, a piezoelectric and a silicon MEMS sensor;detecting the ablation endpoint; andceasing delivery of ablation energy to the tissue site.2. The method of claim 1 , wherein the tissue ablation device is an electromagnetic tissue ablation device.3. The method of claim 1 , wherein the one or more sensors resonate at a frequency equal to a resonance frequency of the ablated tissue.4. The method of claim 3 , wherein the resonance frequency is different from a frequency of non-ablated tissue.5. The method of claim 1 , wherein the one or more sensors is coupled to an external detection device.6. The method of claim 5 , wherein the external device indicates when the one or more sensors is excited to its resonance frequency.7. The method of claim 6 , wherein the external device is coupled to the one or more sensors by at least one of claim 6 , cable and wireless.8. The method of claim 3 , wherein achieving a specific resonance frequency is used to determine the endpoint of the tissue ablation procedure.9. The method of claim 1 , wherein as the ablation procedure ...

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Номер записи: 80
04-07-2013 дата публикации

Systems and methods using sensors that resonate at a frequency equal to a resonance frequency of an ablated tissue

Номер: US20130172869A1
Автор: Bonfeld Jesse
Принадлежит:

A method is provided of tissue ablation during a tissue ablation procedure. Ablation energy is applied by using a tissue ablation device to create an ablation at a tissue site. An ablation endpoint at the tissue site is detected by using an ablation endpoint device with one or more sensors that are positioned to monitor the ablation. The one or more sensors are selected from at least one of, a piezoelectric and a silicon MEMS sensor. Upon detecting the ablation endpoint, delivery of ablation energy to the tissue site ceases. 2. The method of claim 1 , wherein the tissue ablation device is an electromagnetic tissue ablation device.3. The method of claim 1 , wherein the one or more sensors resonate at a frequency equal to a resonance frequency of the ablated tissue.4. The method of claim 3 , wherein the resonance frequency is different from a frequency of non-ablated tissue.5. The method of claim 1 , wherein the one or more sensors is coupled to an external detection device.6. The method of claim 5 , wherein the external device indicates when the one or more sensors is excited to its resonance frequency.7. The method of claim 6 , wherein the external device is coupled to the one or more sensors by at least one of claim 6 , cable and wireless.8. The method of claim 3 , wherein achieving a specific resonance frequency is used to determine the endpoint of the tissue ablation procedure.9. The method of claim 1 , wherein as the ablation procedure proceeds tissue radiating from the ablation device is effected by the ablation.10. The method of claim 9 , wherein the the procedure reaches tissue where the one or more sensors is positioned claim 9 , the detector notifies the physician with an indication that the procedure should be discontinued.11. The method of claim 1 , In one embodiment claim 1 , the endpoint detection device has an array of sensors that are mounted to or encapsulated in a biocompatible material.12. The method of claim 11 , wherein the array of sensors is ...

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Номер записи: 81
04-07-2013 дата публикации

TISSUE CUTTING SYSTEMS AND METHODS

Номер: US20130172870A1
Автор: Germain Aaron, Klein Kyle, Shadduck John H., Truckai Csaba, Walker Michael D.
Принадлежит: ARQOS Surgical, Inc.

A probe for resecting and coagulating tissue comprises an outer sleeve having a tissue cutting window and an inner sleeve having a tissue cutting distal end. And RF cutting region is formed at the distal end of the inner member and an RF coagulation region is formed on an exterior surface of the inner member immediately proximal to the cutting surface. A single power supply providing a single RF energy mode can be connected to both RF applicator regions to simultaneously cut and coagulate tissue. 1. A method resecting tissue , comprising:interfacing an electrosurgical probe with tissue targeted for resection, the probe comprising a cutting member configured to apply simultaneous first and second RF-induced energy application levels to tissue utilizing a single RF power mode, andmoving the probe relative to tissue wherein (i) a leading portion of the cutting member applies a first energy level for vaporization and cutting of tissue and (ii) a trailing portion of the cutting member applies a second energy level for coagulating tissue.2. The method of wherein the probe comprises a windowed outer sleeve and the cutting member is reciprocatable therein across the window to cut and coagulate tissue.3. The method of wherein the first RF-induced energy application level provides a plasma capable of vaporization and cutting of tissue.4. The method of wherein the second RF-induced energy application level is configured for ohmic heating of tissue.5. The method of wherein the second RF-induced energy application level is configured for passive conductive heating of tissue.6. The method of wherein the second RF-induced energy application provides a low-intensity plasma for heating tissue.7. The method of wherein the first RF-induced energy application is provided at sharp distal edge of the cutting member.8. The method of wherein the second RF-induced energy application is provided about a surface of the cutting member.9. The method of wherein the second RF-induced energy ...

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Номер записи: 82
04-07-2013 дата публикации

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

Номер: US20130172872A1
Автор: Anderson James M., HARRISON KENT D., Horn Daniel J., LINDQUIST JEFFREY S., Subramaniam Raj, SUTERMEISTER DEREK C., Tun Zaya
Принадлежит: BOSTON SCIENTIFIC SCIMED, INC.

The disclosure pertains to an intravascular catheter for nerve modulation, comprising an elongate member having a proximal end and a distal end, a balloon having a lumen and a balloon wall, the balloon wall comprising RF permeable sections and non-electrically conductive sections, an electrode disposed within the balloon and extending distally to the furthest distal RF permeable section. The RF permeable sections may comprise a plurality of RF permeable windows, each window having a greater circumferential dimension than an axial dimension. The intravascular system is suited for modulation of renal nerves. 1. An intravascular catheter , comprising:an elongate member having a proximal end and a distal end;a balloon having an interior surface, and exterior surface, a lumen defined by the interior surface and comprising three or more sections that are permeable to RF radiation extending from the interior surface of the balloon to the exterior surface of the balloon and at least one non-electrically conductive section; andan electrode disposed in the balloon.2. The intravascular catheter of claim 1 , wherein the three or more sections that are permeable to RF radiation are spaced circumferentially and longitudinally with respect to each other.3. The intravascular catheter of claim 1 , further comprising a temperature sensor.4. The intravascular catheter of any of claim 1 , wherein the three or more sections that are permeable to RF radiation each comprise a hydrophilic polymer.5. The intravascular catheter of claim 4 , wherein the hydrophilic polymer is a hydrophilic polyurethane.6. The catheter of claim 1 , wherein the three or more sections that are permeable to RF radiation each comprise the hydrophilic polymer blended with a second polymer.7. The catheter of claim 6 , wherein the second polymer is selected from a group consisting of Pebax 6333 claim 6 , Pebax 7033 claim 6 , Pebax 7233 claim 6 , Nylon 12 claim 6 , Vestamid L2101F claim 6 , Grilamid L20 claim 6 , and ...

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Номер записи: 83
11-07-2013 дата публикации

Renal nerve denervation via the renal pelvis

Номер: US20130178824A1
Автор: Terrence J. Buelna
Принадлежит: Verve Medical Inc

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

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Номер записи: 84
11-07-2013 дата публикации

Devices and methods for bipolar and monopolar procedures

Номер: US20130178845A1
Автор: Joseph Levendusky, Naroun Suon, Paul Aquilino, Paul Smith, Samuel RAYBIN
Принадлежит: Boston Scientific Scimed Inc

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

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Номер записи: 85
11-07-2013 дата публикации

Microwave antenna having a curved configuration

Номер: US20130178846A1
Автор: Brian Shiu, Francesca Rossetto, Mani N. Prakash, Sascha Zarins, Steven Kim, Thomas J. Fogarty
Принадлежит: Vivant Medical LLC

A microwave antenna having a curved configuration is described herein. The antenna portion is formed into various shapes whereby the antenna substantially encloses, by a partial or complete loop or enclosure, at least a majority of the tissue to be irradiated. When microwave energy is delivered through the antenna, the curved configuration forms an ablation field or region defined by the curved antenna and any tissue enclosed within the ablation region becomes irradiated by the microwave energy. The microwave antenna is deployed through one of several methods, and multiple curved antennas can be used in conjunction with one another. Moreover, RF energy can also be used at the distal tip of the antenna to provide a cutting tip for the antenna during deployment in tissue.

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Номер записи: 86
11-07-2013 дата публикации

Target-Close Electromagnetic Energy Emitting Device

Номер: US20130178847A1
Автор: Boutoussov Dmitri, Jones Jeffrey W., Rizoiu Ioana M.
Принадлежит: BIOLASE, Inc.

An apparatus having an excitation source that includes at least one laser diode and also having a handpiece with a disposable, bendable tip cannula is disclosed. 1. (canceled)2. A handheld laser apparatus , comprising:a housing configured to be held in a user's hand;a laser source disposed within the housing and configured to generate electromagnetic radiation;a processing device disposed within the housing and configured to control the laser source;a user interface disposed within the housing and configured to receive a user input and transmit the user input to the processing device; andan output configuration coupled to the laser source and configured to emit an ablating beam of electromagnetic radiation to a target.3. The handheld laser apparatus of claim 2 , further comprising:a fluid source disposed within the housing;wherein the output configuration is further configured to emit fluid particles from the fluid source to the target.4. The handheld laser apparatus of claim 2 , further comprising:a power source disposed in the housing.5. The handheld laser apparatus of claim 2 , wherein the user interface comprises a graphical user interface.6. An apparatus claim 2 , comprising:an output configuration including an electromagnetic energy source configured to generate electromagnetic radiation and an optic output coupled to the electromagnetic energy source and configured to emit a beam of electromagnetic radiation to a target; anda housing including a processing device configured to control the electromagnetic energy source and a graphical user interface configured to receive user input to the processing device;wherein the housing is coupled to the output configuration and is configured to be worn on a part of a user's body.7. The apparatus of claim 6 , wherein the housing is configured to be worn on the user's wrist.8. The apparatus of claim 6 , wherein the housing is configured to be clipped on a garment worn by the user.9. The apparatus of claim 6 , wherein the ...

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Номер записи: 87
18-07-2013 дата публикации

DEVICE AND METHOD FOR TREATING MEDICAL, SKIN, AND HAIR DISORDERS WITH ENERGY

Номер: US20130184693A1
Автор: Neev Joseph
Принадлежит:

A device and a method for thermal treatments of target material with various thermal interactions are disclosed. A device for treating hair on the skin comprises a treatment head coupled to a housing; a hair remover for removing the hair from a target area of the skin; a light source for transmitting a predetermined amount of energy to the skin. A device and method for treatment of tissue. The device comprises of an energy source for treatment of surface and subsurface tissue, And of a mechanical source of energy for mechanically deforming the treated tissue. Both the Mechanical Energy (ME) and the Treatment Energy (TE) may be either continuously operating (CO) or modulated in time and space. 1. A device for treating skin by delivering a controlled amount of thermal energy to the skin comprising:a flash lamp for emitting optical energy;a reflector for directing the optical energy emitted from the flash lamp;a circuit to deliver a predetermined amount of energy to the flash lamp;an absorbing layer being placed between the flash lamp and the skin and capable of absorbing at least some of the optical energy discharged by the flash lamp and converting it into thermal energy.2. The device of claim 1 , wherein the absorbing layer comprises a pattern of regions with higher and lower transmissions.3. The device of claim 1 , wherein the absorbing layer is supported on a transparent substrate.4. The device of claim 1 , wherein the absorbing layer is made of absorbing metal5. The device of wherein the absorbing layer is made of absorbing insulator.6. The device of claim 1 , further comprising a power source electrically coupled to a capacitor of the circuit claim 1 , wherein the capacitor is charged by the power source and discharged by a user-operated external trigger.7. A device for treating skin claim 1 , the device comprising:a treatment head coupled to a housing;a window positioned on the treatment head;a light source for transmitting a predetermined amount of energy out ...

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Номер записи: 88
18-07-2013 дата публикации

SYSTEM AND METHOD FOR NON-INVASIVE TREATMENT OF CARDIAC ARRHYTHMIAS

Номер: US20130184697A1
Автор: Chen Yao, Gao Weihua, Han Xiaodong, Xue Joel Qiuzhen, Zhang Yu, Zhu Peng
Принадлежит: GENERAL ELECTRIC COMPANY

A method for non-invasive treatment of cardiac arrhythmias is provided. The method includes acquiring body surface electrical signals at locations on a body surface of a living being from electrodes placed on locations of the body surface, reconstructing three-dimensional heart and torso anatomical models of the living being from an imaging scan, and calculating an electrical activity a throughout three-dimensional volume of the heart by electrocardiogram inverse problem solving based at least in part on the acquired body surface electrical signals and the reconstructed three-dimensional heart and torso anatomical models. The method also includes identifying at least one location of at least one site of origin of a cardiac arrhythmia according to the calculated electrical activity within the heart, and delivering focused energy to the identified at least one location of the at least one site of origin of the cardiac arrhythmia. 1. A method , comprising:acquiring body surface electrical signals at locations on a body surface of a living being from electrodes placed on the locations of the body surface;reconstructing three-dimensional heart and torso anatomical models of a heart and torso of the living being from an imaging scan;calculating an electrical activity throughout a three-dimensional volume of the heart of the living being by electrocardiogram inverse problem solving based at least in part on the acquired body surface electrical signals and the reconstructed three-dimensional heart and torso anatomical models;identifying at least one location of at least one site of origin of a cardiac arrhythmia according to the calculated electrical activity within the heart; anddelivering focused energy to the identified at least one location of the at least one site of origin of the cardiac arrhythmia.2. The method of claim 1 , further comprising:visualizing the at least one location of the at least one site of origin of the cardiac arrhythmia and an area surrounding the ...

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Номер записи: 89
18-07-2013 дата публикации

CREST FACTOR ENHANCEMENT IN ELECTROSURGICAL GENERATORS

Номер: US20130184698A1
Автор: Behnke, II Robert J., WHAM Robert H.
Принадлежит: COVIDIEN LP

The present disclosure relates to an electrosurgical generator which includes a controller configured to generate a first pulse train having at least one first control pulse and at least one first reset pulse. The controller also includes a second pulse train having at least one second control pulse and at least one second reset pulse. The first control pulse(s) and the second control pulse(s) are asynchronous and the reset pulse(s) are synchronous. The electrosurgical generator also includes an RF output stage which includes a first switching element and a second switching element. The control pulses are configured to activate the first switching element and second switching elements, respectively, in an asynchronous fashion to generate a non-continuous RF waveform. 1. A method for performing electrosurgery , the method comprising the steps of:generating a first pulse train, wherein the first pulse train includes at least one first control pulse and at least one first reset pulse;generating a second pulse train, wherein the second pulse train includes at least one second control pulse and at least one second reset pulse, the at least one first control pulse and the at least one second control pulse being asynchronous and the at least one first reset pulse and the at least one second reset pulse being synchronous;supplying the at least one first control pulse train and the at least one second control pulse train to an RF output stage, having a first switching element and a second switching element;activating the first and second switching elements asynchronously to generate a non-continuous RF waveform in response to a plurality of asynchronous first and second control pulses; andactivating the first and second switching elements synchronously to reset the RF output stage in response to the at least one first reset pulse and the at least one second reset pulse.2. A method for performing electrosurgery according to claim 1 , further comprising the step of:determining ...

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Номер записи: 90
18-07-2013 дата публикации

CREST FACTOR ENHANCEMENT IN ELECTROSURGICAL GENERATORS

Номер: US20130184699A1
Автор: Behnke, II Robert J., WHAM Robert H.
Принадлежит: COVIDIEN LP

The present disclosure relates to an electrosurgical generator which includes a controller configured to generate a first pulse train having at least one first control pulse and at least one first reset pulse. The controller also includes a second pulse train having at least one second control pulse and at least one second reset pulse. The first control pulse(s) and the second control pulse(s) are asynchronous and the reset pulse(s) are synchronous. The electrosurgical generator also includes an RF output stage which includes a first switching element and a second switching element. The control pulses are configured to activate the first switching element and second switching elements, respectively, in an asynchronous fashion to generate a non-continuous RF waveform. 1. An electrosurgical generator , comprising: a first pulse train including at least one first control pulse and at least one first reset pulse; and', 'a second pulse train including at least one second control pulse and at least one second reset pulse,', 'wherein the at least one first control pulse and the at least one second control pulse are asynchronous and the at least one first reset pulse and the at least one second reset pulse are synchronous; and, 'a controller configured to generatean RF output stage including a first switching element and a second switching element, wherein the at least one first control pulse and the at least one second control pulse are configured to activate the first and second switching elements asynchronously to generate a non-continuous RF waveform, and wherein the at least one first reset pulse and the at least one second reset pulse are configured to synchronously activate the first and second switching elements, respectively, to reset the RF output stage.2. An electrosurgical generator according to claim 1 , wherein the at least one first reset pulse follows the at least one first control pulse and the at least one second reset pulse follows the at least one second ...

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Номер записи: 91
18-07-2013 дата публикации

SYSTEM AND METHOD FOR TEMPERATURE FEEDBACK FOR ADAPTIVE RADIO FREQUENCY ABLATION

Номер: US20130184700A1
Автор: DALAL SANDEEP, Kruecker Jochen
Принадлежит: KONINKLIJKE PHILIPS ELECTRONICS N.V.

A system and method for ablation include ablating () a target volume using an ablation probe and collecting () temperature information around the target volume. A shape of an ablation volume is determined () based upon the temperature information. The shape is displayed () on a display relative to an image of the target volume. 1. (canceled)2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. (canceled)7. (canceled)8. (canceled)9. (canceled)10. (canceled)11. (canceled)12. (canceled)13. (canceled)14. (canceled)15. (canceled)16. (canceled)17. (canceled)18. (canceled)19. (canceled)20. A system , comprising:{'b': '102', 'an ablation probe ();'}{'b': '106', 'a radio frequency generator () coupled to the probe to energize the probe and configured to collect temperature information from tissue surrounding a target volume;'}{'b': '124', 'a marker () mounted on the probe to provide a reference position for an imaging modality so that locations for which the temperature information is collected can be—determined; and'}{'b': '122', 'a module () configured to determine a shape of an ablation volume based upon the temperature information and display the shape on a display relative to an image of the target volume.'}21102. The system as recited in claim 20 , wherein the probe () includes a multi-tined ablation probe having temperature sensors on a plurality of tines for collecting the temperature information.22300. The system as recited in claim 20 , further comprising a relationship () between ablation geometry versus temperature such that the relationship is employed to determine shape variations of an ablation volume based upon the temperature information.23402. The system as recited in claim 22 , wherein the shape variations from a standard shape include ablation contours () computed using interpolation in accordance with the relationship to proportionally adjust a shape of the ablation.24122. The system as recited in claim 20 , wherein the module () overlays the shape of ...

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Номер записи: 92
25-07-2013 дата публикации

System, method and apparatus for optical imaging of luminal organs, and for centering within and contacting a luminal organ

Номер: US20130190565A1
Автор: Brett Eugene Bouma, Gregory Dierksen, Guillermo J. Tearney, Michalina Jozefina Gora
Принадлежит: General Hospital Corp

Exemplary apparatus and method can be provided for obtaining data for at least one portion within at least one luminal or hollow sample. It is possible, e.g., using a first optical arrangement, to transceive at least one electromagnetic radiation to and from the portion(s). Further, it is possible, e.g., to actuate an expandable second basket arrangement so as to position the first arrangement at a predetermined location within the luminal or hollow sample(s). The second arrangement can have at least one prong or strip that has a flat shape on at least one side thereof.

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Номер записи: 93
25-07-2013 дата публикации

ELECTROPHYSIOLOGY SYSTEM AND METHODS

Номер: US20130190747A1
Автор: CHEUNG DESMOND, Kim Isaac J., Koblish Josef V.
Принадлежит:

An electrophysiology system comprises an ablation catheter, a radiofrequency generator, and a mapping processor. The ablation catheter has a tissue ablation electrode and a plurality of microelectrodes distributed about the circumference of the tissue ablation electrode and electrically isolated therefrom. The plurality of microelectrodes define a plurality of bipolar microelectrode pairs. The mapping processor is configured to acquire output signals from the bipolar microelectrode pairs, compare the output signals, and generate an output to a display providing a visual indication of a characteristic of the microelectrodes and the tissue ablation electrode relative to myocardial tissue to be mapped and/or ablated. 1. An electrophysiology method comprising: a tissue ablation electrode configured to apply ablation energy to the myocardial tissue;', 'a plurality of microelectrodes circumferentially distributed about the tissue ablation electrode and electrically isolated therefrom, the plurality of microelectrodes defining a plurality of bipolar microelectrode pairs, each bipolar microelectrode pair configured to generate an output signal;, 'advancing a distal portion of an ablation catheter intravascularly to a location proximate myocardial tissue within a chamber of a heart, the distal portion of the ablation catheter includingacquiring the output signals from each of the bipolar microelectrode pairs;comparing an amplitude of the output signal from each of the bipolar microelectrode pairs to the amplitudes of the output signals from the other of the plurality of bipolar microelectrode pairs; anddisplaying to a clinician a visual indication of a proximity of the tissue ablation electrode to the myocardial tissue, the visual indication including:an indication that the tissue ablation electrode is in contact with the myocardial tissue if a difference between the amplitude of any one of the output signals and the amplitude of any one or more of the other output signals ...

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Номер записи: 94
25-07-2013 дата публикации

Devices for thermally-induced hepatic neuromodulation

Номер: US20130190748A1
Автор: Bobak Robert Azamian, Jonathan Allen Coe, Scott Bradley Vafai
Принадлежит: Metavention Inc

According to some embodiments, a method of treating a subject having diabetes or symptoms associated with diabetes is provided. The method includes delivering a neuromodulation catheter within a vessel (e.g., hepatic artery) having surrounding nerves that innervate the liver (e.g., sympathetic nerves of the hepatic plexus). The method may also include modulating (e.g., disrupting, ablating, stimulating) the nerves by mechanical compression, energy delivery, or fluid delivery.

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Номер записи: 95
25-07-2013 дата публикации

OPTICAL DETECTION OF INTERRUPTED FLUID FLOW TO ABLATION PROBE

Номер: US20130190749A1
Автор: Brannan Joseph D., Willyard Richard A.
Принадлежит: Vivant Medical, Inc.

An electrosurgical system includes an electrosurgical device adapted to direct energy to tissue and a fluid path leading to the electrosurgical device. The system also includes an optical sensor unit operably associated with the fluid path. The optical sensor unit includes a light-emitting element to generate light output and a light-receiving element to collect light outputted from the light-emitting element. The light-emitting element and the light-receiving element are disposed such that light output from the light-emitting element passes through the fluid path to the light-receiving element. The optical sensor unit is capable of detecting an air bubble in the fluid path passing through the optical sensor unit using a sensed characteristic of light collected at the light-receiving element. 1. A method of detecting an air bubble in a fluid flow , comprising the steps of:providing an optical sensor unit including a light-emitting element and a light-receiving element, the optical sensor unit operably associated with a fluid path;determining a first reference value based on air flow in the fluid path passing through the optical sensor;determining a second reference value based on fluid flow in the fluid path passing through the optical sensor unit;using the optical sensor unit to monitor fluid flow in the fluid path to detect an air bubble in the fluid flow using at least one of the first reference value or the second reference value; andwhen an air bubble in the fluid flow is detected by the optical sensor unit, outputting an electrical signal from the optical sensor unit.2. The method of detecting an air bubble in a fluid flow in accordance with claim 1 , wherein the light emitting element and light-receiving element are disposed such that light directed from the light-emitting element passes through the fluid path to the light-receiving element.3. The method of detecting an air bubble in a fluid flow in accordance with claim 1 , wherein determining the first ...

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Номер записи: 96
25-07-2013 дата публикации

SHIELDING FOR AN ISOLATION APPARATUS USED IN A MICROWAVE GENERATOR

Номер: US20130190750A1
Автор: Behnke, II Robert J., MCMUNIGAL TOM E.
Принадлежит: Vivant Medical, Inc.

A system for reducing radiated emissions the system including a microwave generator that supplies microwave energy at a fundamental frequency, a coaxial transmission cable that transmits microwave energy between the microwave generator and a microwave energy delivery device and an isolation apparatus connected between the microwave generator and the coaxial transmission cable. The isolation apparatus is configured to electrically isolate the coaxial transmission cable from the microwave generator and capacitively couple the microwave generator ground to the coaxial transmission cable. 1. A system for reducing radiated emissions , the system comprising:a microwave generator that supplies microwave energy at a fundamental frequency;a coaxial transmission cable that transmits microwave energy between the microwave generator and a microwave energy delivery device; and an isolation circuit board configured to electrically isolate the microwave generator and the coaxial transmission cable while passing microwave energy therebetween;', 'a ground reference shield connected to a microwave generator ground reference and configured to house the isolation circuit board;', 'a patient reference shield at least partially surrounding the ground reference shield and forming a capacitive relationship therebetween wherein the ground reference shield and the patient reference shield form a capacitor that capacitively couples the microwave generator ground reference to the coaxial transmission cable; and, 'an isolation apparatus connected between the microwave generator and the coaxial transmission cable, the isolation apparatus configured to electrically isolate the coaxial transmission cable from the microwave generator, the isolation apparatus further includingwherein the isolation apparatus capacitively couples the microwave generator ground to the coaxial transmission cable and wherein the capacitance of the capacitor formed between the ground reference shield and the patient ...

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Номер записи: 97
01-08-2013 дата публикации

MEDICAL DEVICES AND PUMPS THEREFOR

Номер: US20130197504A1
Автор: Cronin Nigel, Radford Philip
Принадлежит:

A microwave applicator device comprising a probe () for ablating the body of a human or animal, a cooling passage sage () extending through the probe () and arranged to carry a cooling fluid, a pump () for pumping the fluid through the probe (), and an elongate flexible duct () extending between the pump () and one end of the cooling passage (), the pump comprising a pump body () including a motor () and a pump head () detachably mounted to the pump body (), the pump head () comprising a first port () connected to a proximal end of the elongate flow duct (), a second port () and fluid propulsion means () for creating a flow of fluid between the ports () and along the elongate flow duct upon energisation of the motor (), the pump head () being arranged to sealingly contain the fluid. The pump head (), the elongate flexible duct () and the probe () form a replaceable assembly that can be detached from the pump body () and discarded following use. 1. A medical device comprising a distal head portion for contacting the body of a human or animal , a cooling passage extending through the head portion and arranged to carry a fluid for cooling the head portion , a pump for pumping said fluid through the head portion , and an elongate flexible duct extending between the pump and one end of the cooling passage , said pump comprising a pump body including a motor and a pump head detachably mounted to the pump body , the pump head comprising a first port connected to a proximal end of said elongate flow duct , a second port and fluid propulsion means for creating a flow of said fluid between said ports and along said elongate flow duct upon energisation of said motor , said pump head being arranged to sealingly contain said fluid , wherein the pump head , the elongate flexible duct and the head portion form replaceable assembly that can be detached from the pump body following use.2. A medical device as claimed in claim 1 , in which the assembly comprises a further elongate ...

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Номер записи: 98
01-08-2013 дата публикации

TREATMENT OF TISSUE IN SPHINCTERS, SINUSES, AND ORIFICES

Номер: US20130197505A1
Автор: EDWARDS STUART D., THOMAS Simon W. H.
Принадлежит: NOVASYS MEDICAL, INC.

The invention comprises a method and apparatus for treatment of a body part. More particularly, a method and apparatus for heat treatment of tissue using a catheter inserted into a body part is described along with means for positioning the catheter and means for positioning a set of electrodes relative to a tissue sample for treatment. Still more particularly, radio frequency energy at about 400 to 500 kilohertz is used to provide heat for the tissue treatment. 1. A method of tissue heat treatment of urinary incontinence in a woman , comprising the steps of:inserting a catheter into the womans's urethra, said catheter comprising:a set of electrodes configured to extend into the tissue targeted targeted for heat treatment;extending the electrodes through the urethra and into the tissue; anddelivering electromagnetic energy to said tissue from the electrodes, wherein said electromagnetic energy comprises radio frequency energy.2. The method of claim 1 , wherein said set of electrodes comprises four to eight electrodes.3. The method of claim 2 , wherein said set of electrodes comprises four electrodes.4. The method of claim 1 , wherein the step of extending comprises operating a mechanical control integrated into said catheter.5. The method of claim 1 , further comprising the step of:anchoring said catheter through inflation of a balloon attached to said catheter.6. The method of claim 5 , further comprising the step of:anchoring the catheter at or near the neck of the bladder.7. The method of claim 1 , further comprising the step of:repositioning said catheter by rotation.8. The method of claim 1 , further comprising the step of:repositioning said catheter by translation to deliver electromagnetic energy to multiple target regions.9. The method of claim 1 , wherein said radio frequency energy comprises energy at about 400 to 500 kilohertz.10. The method of claim 9 , wherein said step of delivering electromagnetic energy comprises a period of less than about ten ...

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Номер записи: 99
01-08-2013 дата публикации

Fine dissection electrosurgical device

Номер: US20130197506A1
Автор: Doug Evans, Kimberly Nguyen, Nathan Wang
Принадлежит: Arthrocare Corp

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

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Номер записи: 100