Microwave antenna having a curved configuration

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.

Vaginal remodeling device and method

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

SURGICAL SNARE WITH ABILITY TO DELIVER ELECTROMAGNETIC ENERGY AND/OR THERMAL PLASMA INTO BIOLOGICAL TISSUE

A surgical snare comprising a means of delivering thermal plasma on to biological tissue encircled by the snare. The snare may be “cold” snare, i.e. formed from insulating material, or active, i.e. connected to receive RF and/or microwave energy to be radiated into the area encircled by the snare. The surgical snare may thus deliver into biological tissue encircled by a retractable loop any one of (i) a plasma to perform surface coagulation, (ii) a non-ionising microwave field (in the absence of plasma) to perform coagulation at a deeper level, and (iii) an RF field to assist with cutting. 1. A surgical snare comprising:an elongate probe comprising a coaxial cable for conveying radiofrequency (RF) and/or microwave frequency electromagnetic (EM) energy, and a probe tip connected at the distal end of the coaxial cable for receiving the RF and/or microwave energy;a gas passage for conveying gas through the elongate probe to the probe tip; anda retractable loop mounted at the probe tip for encircling an area containing biological tissue beyond the probe tip,wherein the coaxial cable comprises an inner conductor, an outer conductor and a dielectric material separating the inner conductor from the outer conductor,wherein the probe tip comprising a first electrode connected to the inner conductor of the coaxial cable and a second electrode connected to the outer conductor of the coaxial cable, andwherein the first electrode and the second electrode are arranged to produce an electric field from the received RF and/or microwave frequency EM energy across a flow path of gas received from the gas passage to produce a thermal or non-thermal plasma in the area encircled by the retractable loop.2. A surgical snare according to claim 1 , wherein the first electrode and the second electrode are movable relative to each other into a second configuration in which the first electrode extends distally beyond the second electrode to form a radiating structure for emitting a microwave ...

SYSTEMS AND METHODS RELATED TO FLEXIBLE ANTENNAS

A flexible instrument comprises an antenna having a distal tip portion, a proximal base, and an antenna body therebetween. The antenna body comprises a patterned cylindrical structure having a proximal end coupled to the proximal base and a distal end coupled to the distal tip portion. The flexible instrument is configured to generate a radiation pattern from the antenna to ablate tissue. 1. A flexible instrument , comprising:an antenna having a distal tip portion, a proximal base, and an antenna body therebetween,wherein the antenna body comprises a patterned cylindrical structure having a proximal end coupled to the proximal base and a distal end coupled to the distal tip portion, andwherein the flexible instrument is configured to generate a radiation pattern from the antenna to ablate tissue.2. The flexible instrument of claim 1 , wherein the antenna comprises:a first material having a flexible plastic deformation limit allowing recovery of the antenna body to a substantially initial state after being formed into a tight bend; anda second material plated onto the first material, wherein the second material being more conductive than the first material.3. The flexible instrument of claim 2 , wherein the tight bend has a bend radius of less than approximately 30 mm.4. The flexible instrument of claim 2 , wherein the first material comprises at least one of stainless steel claim 2 , nickel titanium claim 2 , and beryllium copper claim 2 , and the second material comprises at least one of gold and silver.5. The flexible instrument of claim 1 , further comprising a conducting cable assembly comprising an inner conductor and an outer conductor wherein the antenna and the conducting cable assembly are coupled.6. The flexible instrument of claim 5 , wherein the proximal base couples to the outer conductor of the conducting cable assembly.7. The flexible instrument of claim 5 , further comprising a spacer claim 5 , wherein the proximal base of the antenna couples to the ...

ELECTROSURGICAL SNARE

An electrosurgical snare, e.g. suitably sized for insertion down the instrument channel of an endoscope, arranged to radiate microwave frequency energy (e.g. having a frequency greater than 1 GHz) from an elongate conductive element within an area encircled by a retractable loop. The elongate conductive element and retractable loop may be independently slidable relative to a snare base at a distal end of a sleeve to provide an appropriate device configuration. By controlling the shape of the emitted microwave field, the risk of collateral thermal damage can be reduced. 113.-. (canceled)14. A surgical snare comprising:a retractable loop for encircling an area containing biological tissue;a radiating structure arranged to radiate microwave frequency energy into the area encircled by the retractable loop;a coaxial cable for conveying the microwave frequency energy to the radiating structure, the coaxial cable comprising an inner conductor, an outer conductor surrounding and coaxial with the inner conductor, and a dielectric material separating the inner conductor and the outer conductor; anda snare base at a distal end of the coaxial cable, wherein the retractable loop is retractable relative to the coaxial cable towards the snare base, andwherein the radiating structure comprises a curved conductive portion partially bounding the area encircled by the retractable loop, the curved conductive portion being connected to the inner conductor of the coaxial cable and electrically insulated from the outer conductor of the coaxial cable to act as a radiating microwave monopole antenna.15. A surgical snare according to claim 14 , wherein the curved conductive portion extends between two ends claim 14 , which are spaced at equal distances from a connection point at which the inner conductor of the coaxial cable is connected to the curved conductive portion.17. A surgical snare according to claim 15 , wherein the electrical length of the curved conductive portion is 10 mm or ...

REINFORCED HIGH STRENGTH MICROWAVE ANTENNA

A microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. Proximal and distal radiating portions of the antenna assembly are separated by a junction member. A reinforcing member is disposed within the junction member to increase structural rigidity. 120-. (canceled)21. A microwave antenna , comprising:an outer conductor;an inner conductor disposed within the outer conductor;a dielectric material disposed between the outer and inner conductors; anda reinforcing member surrounding the inner conductor and disposed distal to the outer conductor.22. The microwave antenna according to claim 21 , wherein the reinforcing member is electrically conductive.23. The microwave antenna according to claim 21 , further comprising a radiating portion claim 21 , wherein the reinforcing member is at least partially disposed within the radiating portion.24. The microwave antenna assembly according to claim 21 , further comprising a thermocouple.25. The microwave antenna assembly according to claim 24 , wherein the thermocouple includes a blunt distal tip.26. The microwave antenna assembly according to claim 24 , wherein the thermocouple is at least partially disposed within the inner conductor.27. The microwave antenna assembly according to claim 21 , wherein the inner conductor extends longitudinally within the radiating portion.28. The microwave antenna assembly according to claim 21 , further comprising a lumen formed around the outer conductor and configured to receive cooling fluid.29. The microwave antenna assembly according to claim 28 , further comprising a temperature sensor disposed within the lumen and configured to sense a temperature of cooling fluid received within the lumen.30. The microwave antenna assembly according to claim 21 , further comprising a junction member disposed within the radiating portion claim 21 , the inner conductor extending longitudinally through the junction member.31. The microwave antenna ...

FLOW RATE MONITOR FOR FLUID COOLED MICROWAVE ABLATION PROBE

A microwave ablation system includes an antenna assembly configured to deliver microwave energy from a power source to tissue and a coolant source operably coupled to the power source and configured to selectively provide fluid to the antenna assembly via a fluid path. The system also includes a controller operably coupled to the power source and a sensor operably coupled to the fluid path and the controller. The sensor is configured to detect fluid flow through the fluid path and the controller is configured to control the energy source based on the detected fluid flow. 120-. (canceled)21. A method of detecting fluid flow through a microwave ablation system , the method comprising:delivering microwave energy from a power source to tissue via an antenna assembly;supplying a fluid from a coolant source to the antenna assembly via a fluid path;generating an electrical signal at a sensor coupled to the fluid path indicative of a flow of the fluid through the fluid path;detecting at least one peak of the electrical signal being indicative of an interruption in the flow of the fluid through the fluid path; andmodifying output of the microwave energy from the power source based on the detected peak.22. The method according to claim 21 , wherein the sensor is an electro-mechanical switch and the electrical signal is generated based on a position of the electro-mechanical switch.23. The method according to claim 21 , wherein the sensor is a capacitive device and the electrical signal is generated based on a capacitance of the capacitive device.24. The method according to claim 23 , wherein the capacitive device comprises a dielectric disposed between a pair of parallel capacitive plates.25. The method according to claim 24 , wherein the capacitance of the capacitive device is based on a permittivity of the dielectric disposed between the capacitive plates.26. The method according to claim 21 , further comprising:transmitting the electrical signal to a controller associated ...

Systems and methods for ablating tissue

A microwave ablation system includes a microwave ablation antenna assembly, a generator, a first fluid supply source, and a second fluid supply source. The microwave ablation antenna assembly includes a fluid port for receiving fluid. The generator is coupled to the microwave ablation antenna assembly. The first fluid supply source is configured to be selectively in fluid communication with the fluid port to supply a first fluid to the microwave ablation antenna assembly. The second fluid supply source is configured to be selectively in fluid communication with the fluid port to supply a second fluid to the microwave ablation antenna assembly.

Electrosurgical tissue ablation systems capable of detecting excessive bending of a probe and alerting a user

An electrosurgical system includes an electrosurgical device, one or more temperature sensors associated with the electrosurgical device, a fluid-flow path leading to the electrosurgical device, and a flow-control device disposed in fluid communication with the fluid-flow path. The electrosurgical device includes a probe for directing energy to tissue. The electrosurgical system includes circuitry for detecting bending of the probe. The circuitry alerts the user of excessive bending by activating an alarm, such as an audible alarm, lighting one or more LEDs or other light sources, tactile feedback, or any other means. The electrosurgical system further includes a processor unit communicatively-coupled to the one or more temperature sensors and communicatively-coupled to the flow-control device. The processor unit is configured to control the flow-control device based on determination of a desired fluid-flow rate using one or more electrical signals outputted from the one or more temperature sensors.

Electrosurgical snare

An electrosurgical snare, e.g. suitably sized for insertion down the instrument channel of an endoscope, arranged to radiate microwave frequency energy (e.g. having a frequency greater than 1 GHz) from an elongate conductive element within an area encircled by a retractable loop. The elongate conductive element and retractable loop may be independently slidable relative to a snare base at a distal end of a sleeve to provide an appropriate device configuration. By controlling the shape of the emitted microwave field, the risk of collateral thermal damage can be reduced.

Microwave energy-delivery device and system

An ablation system including an image database storing a plurality of computed tomography (CT) images of a luminal network and a navigation system enabling, in combination with an endoscope and the CT images, navigation of a locatable guide and an extended working channel to a point of interest. The system further includes one or more fiducial markers, placed in proximity to the point of interest and a percutaneous microwave ablation device for applying energy to the point of interest.

Electrosurgical snare

The disclosure relates to three enhancements for a surgical snare: an electrosurgical snare in which the loop of snare wire extends from an energy transfer surface which can act both as a physical reaction surface for mechanical cutting using the snare and as a region for emitting electromagnetic energy; a surgical snare having a snare wire having a first end connected to a movable boss that is slidably mounted on a coaxial cable; and a surgical snare having an end cap with a distally facing reaction surface and a pair of channels for guiding a snare wire, where the distally facing reaction surface is arranged to contact the retractable loop when fully retracted.

SYSTEMS AND METHODS FOR TISSUE ABLATION AND MEASUREMENTS RELATING TO THE SAME

An exemplary ablation system is provided. The system is designed for safe and efficacious energy delivery into tissue by, for example, emitting energy in a controlled, repeatable manner that allows for feedback and energy emission titration based on sensed parameters (e.g., tissue temperature) measured during ablation. The system may include a switching antenna for both heating of target tissue and radiometry to monitor the temperature of the heated tissue. For example, the switching antenna may include a monopole formed by proximal and distal radiating elements, such that the proximal radiating element includes a short to defeat a choke action of the proximal radiating element. The system further includes a processor for calculating the temperature of the target tissue and estimating volume of the ablation lesion based on the target tissue temperature. 1. A system for ablating target tissue within a patient , the system comprising:a catheter having a proximal region and a distal region;a main antenna comprising a monopole, the main antenna disposed at the distal region of the catheter and configured to emit energy to ablate the target tissue and to measure a radiometer temperature generated as a result of the energy emission;a reference termination disposed at the distal region of the catheter, the reference termination configured to measure a reference temperature at the distal region; and cause the main catheter to measure radiometer temperature and the reference termination to measure reference temperature in an alternating manner via a switch electrically coupled to the main antenna and the reference termination; and', 'calculate a target tissue temperature based on the measured radiometer temperature and the measured reference temperature., 'a processor operatively coupled to the main antenna and the reference termination, the processor configured to2. The system of claim 1 , wherein the monopole comprises a proximal radiating element and a distal radiating ...

Microwave apparatus, system and method

A microwave system comprises: a microwave generator; and a microwave cable apparatus comprising a coaxial cable, wherein an exposed distal portion of an inner conductor of the coaxial cable is longer than an outer conductor of the coaxial cable, and wherein at least part of the exposed distal portion of the inner conductor is bent with respect to a longitudinal axis of the coaxial cable, thereby to provide a directional radiating element; wherein the microwave generator is configured to provide microwave energy to the cable apparatus at a frequency that provides directional radiation of microwave energy having a desired directionality from the radiating element.

Microwave ablation antenna system

An antenna system is provided. The antenna system includes a coaxial cable, an antenna, and an impedance matching structure. The coaxial cable includes a center conductor extending a length of the coaxial cable, a dielectric material surrounding the center conductor along the length of the coaxial cable, and a conductive shield surrounding the dielectric material along the length of the coaxial cable. The antenna includes a conductor having an electrical length of half a wavelength at a selected operating frequency. The impedance matching structure includes a second center conductor mounted between an end of the center conductor of the coaxial cable and a feed end of the antenna. The impedance matching structure is configured to match an impedance of the coaxial cable to an impedance of the antenna.

MICROWAVE ANTENNA ASSEMBLY AND METHOD OF USING THE SAME

A microwave antenna assembly comprising an elongate shaft having proximal and distal ends and a lumen defined therebetween, a conductive member at least partially disposed within the inner lumen of elongate shaft, conductive member being selectively deployable relative to a distal end of elongate shaft from a first condition wherein a distal end of conductive member at least partially abuts the distal end of elongate shaft to a second condition wherein the distal end of conductive member is spaced relative to the distal end of elongate shaft and a first dielectric material disposed between elongate shaft and conductive member, wherein a portion of conductive member is distal to the distal end of elongate shaft and adapted to penetrate tissue. 116-. (canceled)17. A method for deploying a microwave antenna assembly , comprising:advancing a microwave antenna assembly into tissue with a conductive member of the microwave antenna assembly being in a first configuration;deploying a distal portion of the conductive member, the distal portion biasing the conductive member into a predetermined second configuration;delivering electrosurgical energy through the conductive member to tissue;retracting the distal portion of the conductive member thereby returning the conductive member into the first configuration.18. The method of claim 17 , wherein advancing the microwave antenna assembly includes delivering electrosurgical energy to tissue during the advancement.19. The method of claim 17 , wherein deploying the conductive member includes delivering electrosurgical energy to tissue during the deployment.20. The method of claim 17 , wherein retracting the distal portion of the conductive member includes delivering electrosurgical energy to tissue during the retraction.21. The method of claim 17 , wherein deploying the distal portion of the conductive member includes:inserting the microwave antenna assembly into an introducer; andinserting the introducer into tissue.22. The ...

ELECTROSURGICAL INSTRUMENT

An electrosurgical device having a radiating tip portion for delivering electromagnetic energy to biological tissue, where the electrosurgical device is disposed in a catheter. The electrosurgical device is movable relative to the catheter between a deployed position where the radiating tip portion is exposed and a retracted position where the radiating tip portion is contained within the catheter. In this manner, the radiating tip portion may be retracted until the moment when it is to be used. This may facilitate insertion of the device through an instrument channel of a surgical scoping device. In particular, this may prevent the radiating tip portion from catching on the instrument channel when the device is inserted into the instrument channel, which could cause damage to the instrument channel and/or radiating tip portion. 1. An electrosurgical instrument comprising:a flexible catheter having a lumen extending therethrough, the catheter being dimensioned to be insertable through an instrument channel of a surgical scoping device; and a flexible coaxial cable configured to convey microwave energy; and', a proximal coaxial transmission line for conveying the microwave energy; and', 'a distal needle tip at a distal end of the proximal coaxial transmission line, the distal needle tip being configured to radiate the microwave energy into biological tissue,, 'a radiating tip portion connected at a distal end of the coaxial cable to receive the microwave energy, the radiating tip portion having a smaller outer diameter than the flexible coaxial cable, wherein the radiating tip portion comprises], 'an electrosurgical device disposed within the lumen, the electrosurgical device comprisingwherein the electrosurgical device is longitudinally movable within the lumen between a deployed position in which the distal needle tip protrudes beyond a distal end of the catheter, and a retracted position in which the distal needle tip portion is contained within the catheter.2. An ...

Antenna assemblies for medical applications

A device for directing energy to a target volume of tissue includes a monopole antenna assembly that includes a monopole antenna radiating section having a monopole antenna element surrounded by a dielectric material. The monopole antenna assembly also includes a ground plane disposed at a proximal end of the monopole antenna radiating section, wherein the ground plane is configured to direct energy into the target volume of tissue.

Methods and devices for applying energy to bodily tissues

Devices and methods for treating tissue with microwave energy used in applications such as destroying a soft tissue by microwave ablation and/or creating point, line, area or volumetric lesions. Various embodiments of flexible, low-profile devices are also disclosed where such device can be inserted non-invasively or minimally invasively near or into the target tissue such as cardiac tissue. The devices disclosed herein comprise antennas wherein the field profile generated by an antenna is tailored and optimized for a particular clinical application. The antennas use unique properties of microwaves such as interaction of a microwave field with one or more conductive or non-conductive shaping elements to shape or redistribute the microwave field.

MICROWAVE ABLATION ANTENNA ASSEMBLIES

A microwave ablation antenna assembly () incorporates a choke assembly () having a dielectric element () and a conducting element (). The conducting element () is chosen from a group of elements of fixed length, but with differing electrical lengths for providing cancellation properties for different wavelengths of microwave energy. 1. A microwave ablation antenna assembly comprising:an elongate body which extends from a first end to a second end thereof, and which defines therein a hollow inner volume and a longitudinal axis of the antenna;an applicator tip portion mounted on the second end of the elongate body;an elongate coaxial conductor assembly for connection to a source of microwave energy having an operating frequency in the microwave frequency range, the coaxial conductor assembly extending from the first end of the body towards the second end of the body through the inner volume, the coaxial conductor assembly having an inner conductor, a dielectric layer arranged radially outwardly of the inner conductor and extending along the inner conductor, and an outer conductor arrange radially outwardly of the dielectric layer and extending along the dielectric layer, the inner conductor defining a signal feed-point of the coaxial conductor assembly at a distal end thereof towards the second end of the body;a dipole tip portion which extends from the feed point of the coaxial conductor assembly towards the applicator tip, and which is electrically connected with the inner conductor of the coaxial conductor assembly; and a choke dielectric element of dielectric material arranged adjacent, and coaxially with, the coaxial conductor assembly such that the conductor assembly passes through the choke dielectric element, the choke dielectric element being spaced apart from the feed point of the coaxial conductor assembly and defining an outer surface, and', 'a choke conducting element of electrically conductive material, the conducting element having a first portion ...

MICROWAVE TREATMENT DEVICES AND METHODS

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

ANTENNA ASSEMBLIES FOR MEDICAL APPLICATIONS

A device for directing energy to a target volume of tissue includes a monopole antenna assembly that includes a monopole antenna radiating section having a monopole antenna element surrounded by a dielectric material. The monopole antenna assembly also includes a ground plane disposed at a proximal end of the monopole antenna radiating section, wherein the ground plane is configured to direct energy into the target volume of tissue. 17-. (canceled)8. An antenna assembly for directing energy to a target volume of tissue , comprising:an outer shell defining an interior volume and including a longitudinal axis extending through the interior volume; anda helical antenna disposed within the interior volume of the outer shell and wound coaxially about the longitudinal axis.9. The antenna assembly according to claim 8 , further comprising a tissue-penetrating tip disposed at a distal end of the outer shell.10. The antenna assembly according to claim 8 , wherein the outer shell defines a cylindrical configuration such that the interior volume is cylindrical.11. The antenna assembly according to claim 8 , wherein a dielectric material is disposed within the interior volume of the outer shell.12. The antenna assembly according to claim 8 , wherein a fluid is disposed within the interior volume of the outer shell.13. The antenna assembly according to claim 8 , wherein the outer shell includes an inner layer defining the interior volume and an outer layer radially-spaced from the inner layer to define an annular volume therebetween.14. The antenna assembly according to claim 13 , wherein a dielectric material is disposed within the annular volume.15. The antenna assembly according to claim 13 , wherein a fluid is disposed within the annular volume.16. The antenna assembly according to claim 13 , further comprising two longitudinally formed partitions extending between the inner and outer layers claim 13 , the partitions dividing the annular volume into first and second annular ...

Electrosurgical energy channel splitters and systems for delivering electrosurgical energy

An electrosurgical energy channel splitter apparatus includes a channel input a plurality of channel outputs, and a controller. The channel input is configured to receive electrosurgical energy from an electrosurgical energy source. Each channel output is configured to couple to a respective electrosurgical device. The controller is coupled to the channel input and the plurality of channel outputs. The controller is configured to selectively direct the electrosurgical energy from the channel input to one of the plurality of channel outputs.

ELECTROSURGICAL ABLATION INSTRUMENT

An electrosurgical instrument having a microwave ablation antenna dimensioned to be suitable for insertion into a pancreas via a surgical scoping device, to provide a rapid and accurate alternative to known RF ablation techniques. The electrosurgical instrument comprises: a proximal coaxial transmission line for conveying microwave electromagnetic (EM) energy; a distal radiating portion; and an intermediate impedance transformer arranged to match an impedance of the coaxial transmission line to an impedance of the distal radiating portion, wherein the distal radiating portion comprises a microwave antenna for emitting the microwave EM energy conveyed by the coaxial transmission line, wherein the distal radiating portion has a maximum outer diameter less than an outer diameter of the coaxial transmission line. With these features, the instrument is able to deliver microwave energy via a small diameter structure. 1. An electrosurgical instrument comprising:a proximal portion comprising a coaxial transmission line for conveying microwave electromagnetic (EM) energy; wherein the coaxial transmission line comprises an inner conductor separated from a proximal outer conductor by a first dielectric material;a distal radiating portion; andan intermediate impedance transformer arranged to match an impedance of the coaxial transmission line to an impedance of the distal radiating portion,wherein the inner conductor extends beyond a distal end of the proximal outer conductor through the intermediate impedance transformer and through the distal radiating portion to form a conductive portion of a microwave antenna for emitting the microwave EM energy conveyed by the coaxial transmission line,wherein the microwave antenna comprises a distal dielectric material mounted over the conductive portion of the microwave antenna,wherein the distal radiating portion defines an outer surface of the electrosurgical instrument and has a maximum outer diameter less than an outer diameter of ...

Antenna Assembly for Microwave Ablation and Microwave Ablation Needle Using the Same

An antenna assembly for microwave ablation can include a radiator for emitting a microwave for ablation; a coaxial cable for transmitting the microwave for ablation generated by a microwave generator to the radiator; an annular composite structure is provided around the coaxial cable for inhibiting an electromagnetic wave from propagating backwards along the coaxial cable. In some embodiment, the annular composite structure comprises an annular nonmetallic layer and an annular metallic layer located outside the annular nonmetallic layer. In some embodiments, the annular metallic layer is electrically insulated from the coaxial cable. In some embodiments, the antenna assembly can be used with a microwave ablation needle. The annular composite structure can inhibit the backward propagation of the microwave along the coaxial cable exterior wall. In some embodiments, circulation water enters the radiation zone, to avoid high temperatures of the head the ablation needle.

Устройство и способ реконструкции влагалища

Изобретения относятся к медицинской технике. Устройство с держателем пальца для реконструкции ткани женских гениталий содержит обрабатывающий наконечник (1) и рукоятку (2). Обрабатывающий наконечник (1) соединен с дистальным концом рукоятки (2) с помощью средств (3) соединения. Поверхность дистального конца обрабатывающего наконечника (1) имеет коническую, сферическую, полусферическую, овальную или круглую форму и содержит элементы (4) для подачи энергии, выполненные с возможностью контакта с целевой тканью на 360 градусов, которые пользователь может выборочно включить или выключить. Устройство содержит датчики температуры для измерения температуры на эпителии и под ним, датчики направления и метки глубины, показывающие глубину проникновения обрабатывающего наконечника во влагалище. Датчики направления представляют собой акселерометры или гироскопы и установлены на рукоятке (2) или обрабатывающем наконечнике (1). Захватывающие средства устройства соединены с рукояткой (2) и имеют держатель пальца на дистальном конце и обертываемую петлю на проксимальном конце. Достигается регулировка контакта с тканью пациента оптимальным образом за счет максимизации площади контакта электрода с целевыми тканями, который остается при этом совместимым с локальной структурой вагинальных тканей, а также позволяет выборочно и независимо манипулировать каждым элементом для доставки энергии, чтобы избежать приложения энергии к нежелательным областям. 4 н. и 21 з.п. ф-лы, 10 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 631 477 C2 (51) МПК A61B 18/14 (2006.01) A61F 7/12 (2006.01) A61N 5/02 (2006.01) A61N 7/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2014141309, 15.03.2013 (24) Дата начала отсчета срока действия патента: 15.03.2013 Дата регистрации: Приоритет(ы): (30) Конвенционный приоритет: (73) Патентообладатель(и): ВИВЕВЕ, ИНК. (US) 16.03.2012 CN 201210069906.X (45) Опубликовано: 22.09.2017 Бюл. № 27 (56) Список ...

Microwave antenna with flat paddle shape

A surgical spatula comprising a flat paddle 10 and a handle extending away from a first end thereof, wherein the handle comprises a coaxial power feed 64 connectable to receive energy from a microwave power source, and the paddle 10 contains a microwave conveying structure 12,14,16,18,20 connected to the coaxial power feed 64, the microwave conveying structure being enclosed 12,14,16,18,20 at a front end of the paddle 10 opposite the first end and open along a side of the paddle which extends away from the first end to permit a microwave radiation field to be emitted from that side. The device can be used in ablation procedures.

Electrosurgical instrument

An electrosurgical instrument is provided and includes an elongated housing having proximal and distal ends. The proximal end configured to couple to a source of electrosurgical energy via first and second channels extending along a length of the housing to the distal end thereof. The distal end including a reflector having a dielectric load operably coupled thereto and configured to receive at least a portion of the first conductor therein. In a first mode of operation, electrosurgical energy is transmitted to the first channel and reflected from the reflector to electrosurgically treat tissue. The reflector is configured to receive at least a portion of the second channel therein. In a second mode of operation, electrosurgical energy transmitted to the second channel to dissect tissue.

Surgical antenna and electrosurgical system using the same

A surgical spatula ( 10, 34 ) has a flat paddle ( 38, 62 ) and a handle extending away from a first end of the flat paddle ( 38, 62 ). The handle has a coaxial power feed ( 64, 130 ) which is connectable to receive energy from a microwave power source. The paddle ( 38, 62 ) contains a microwave conveying structure connected to the coaxial power feed ( 64, 130 ). The microwave conveying structure is enclosed at a front end of the paddle ( 38, 62 ) opposite to the first end so that microwave radiation is blocked from being emitted from the front end. The microwave conveying structure is open along a side of the paddle ( 38, 62 ) which extends away from the first end to permit a microwave radiation field to be emitted from that side.

Surgical antenna and electrosurgical system using the same

A surgical spatula (10, 34) has a flat paddle (38, 62) and a handle extending away from a first end of the flat paddle (38, 62). The handle has a coaxial power feed (64, 130) which is connectable to receive energy from a microwave power source. The paddle (38, 62) contains a microwave conveying structure connected to the coaxial power feed (64, 130). The microwave conveying structure is enclosed at a front end of the paddle (38, 62) opposite to the first end so that microwave radiation is blocked from being emitted from the front end. The microwave conveying structure is open along a side of the paddle (38, 62) which extends away from the first end to permit a microwave radiation field to be emitted from that side.

Surgical antenna and electrosurgical system using the same

Vaginal remodeling device and method

본 발명은 여성 생식기 조직 재건을 위한 방법 및 기구를 제공하는데, 이 기구는 처치용 팁을 포함하고, 처치용 팁의 원단부는 원뿔, 구, 반구, 타원 또는 원 형태이다. 이 기구는 질 상피를 냉각하고 동시에 상피 아래의 조직을 가열하기 위한 에너지를 전달하기 위한 하나 이상의 에너지 전달 소자를 포함한다. 일 실시예에서, 상기 기구는 상피 또는 상피 아래의 온도를 측정하기 위한 하나 이상의 온도 센서; 핸드 피스 또는 처치용 팁상에 장착된 하나 이상의 지향성 센서; 및 처치용 팁의 질 안으로의 관통 깊이를 나타내기 위한 하나 이상의 깊이 표시기 중 하나 이상을 포함한다. 다른 실시예에서, 본 발명은 여성 생식기 조직을 재건하기 위해 전극을 구비한 핑거 홀더를 갖는 기구를 제공한다. The present invention provides a method and apparatus for female genital tissue reconstruction, wherein the instrument comprises a treatment tip, the distal end of the treatment tip being in the form of a cone, sphere, hemisphere, oval or circle. The apparatus includes one or more energy transfer elements for delivering energy for cooling the vaginal epithelium and simultaneously for heating the tissue below the epithelium. In one embodiment, the instrument comprises one or more temperature sensors for measuring the epithelium or temperature below the epithelium; One or more directional sensors mounted on the hand piece or treatment tip; And one or more depth indicators for indicating the depth of penetration into the vagina of the treatment tip. In another embodiment, the present invention provides an instrument having a finger holder with an electrode for rebuilding female genital tissue.

Surgical antenna and electrosurgical system using the same

一种手术抹刀(10，34)具有平桨(38，62)以及从平桨(38，62)的第一端延伸开的柄。柄具有可连接以接收来自微波功率源的能量的同轴馈电部(64，130)。浆(38，62)包括连接到同轴馈电部(64，130)的微波传送结构。微波传送结构在桨(38，62)的与第一端相对的前端处封闭，以使得阻止微波辐射从前端发射。微波传送结构沿着桨(38，62)的从第一端延伸开的侧面敞开，以允许从该侧面发射微波辐射场。

Angioplasty and tissue ablation apparatus and method

A coaxial cable apparatus which transmits radio frequency (RF) energy for the ablation of biological tissues has inner and outer coaxial conductors extending substantially the entire length of the cable from a proximal end portion to a distal end portion. An RF antenna is disposed at the distal end portion of the cable and transmits RF energy for ablation of a tissue region to be treated. An angioplasty balloon is disposed over the RF antenna and communicates with a fluid supply and extraction passageway extending through the cable to allow the balloon to be inflated for an angioplasty procedure including tissue ablation, and to be deflated after the procedure is complete.

Electrosurgical instrument

FIELD: medical technology. SUBSTANCE: group of inventions relates to medical technology, in particular to an electrosurgical instrument for delivering microwave energy to biological tissues, in which a pair of conductive tuning elements are installed in the radiating tip of the instrument to form the profile of the microwave radiation of the instrument, so that the radiation profile is limited around the tip of the instrument. Such tuning elements can cause the radiation profile to be essentially spherical around the tip of the instrument, providing a well-defined ablation volume. EFFECT: tuning elements increase the efficiency with which microwave energy can be delivered to target tissues. 19 cl, 16 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 769 299 C1 (51) МПК A61B 18/18 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК A61B 18/18 (2022.02) (21)(22) Заявка: 2020143415, 27.06.2019 (24) Дата начала отсчета срока действия патента: Дата регистрации: (73) Патентообладатель(и): КРЕО МЕДИКАЛ ЛИМИТЕД (GB) 30.03.2022 (56) Список документов, цитированных в отчете о поиске: US 2017172656 A1, 22.06.2017. US 2016000505 A1, 07.01.2016. US 2001008966 A1, 19.07.2001. US 5904709 A, 18.05.1999. RU 32678 U1, 27.09.2003. 12.07.2018 GB 1811433.0 (45) Опубликовано: 30.03.2022 Бюл. № 10 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 12.02.2021 (86) Заявка PCT: 2 7 6 9 2 9 9 R U (87) Публикация заявки PCT: WO 2020/011547 (16.01.2020) Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, стр. 3, ООО "Юридическая фирма Городисский и Партнеры" (54) ЭЛЕКТРОХИРУРГИЧЕСКИЙ ИНСТРУМЕНТ (57) Реферат: Группа изобретений относится к медицинской инструмента. Такие настроечные элементы могут технике, в частности к электрохирургическому привести к тому, что профиль излучения будет инструменут для доставки микроволновой по существу сферическим вокруг наконечника энергии к биологическим тканям, в котором пара инструмента, ...

Flexible instrument with patterned antenna assembly having variable recoverable flexibility

本文中公开了柔性器械与相关联系统和方法。在一些实施例中，柔性器械包括细长装置，其具有内导体、包围内导体的外导体和将内导体与外导体绝缘的电介质层。柔性器械进一步包括在外导体中形成的凹槽。插入件在凹槽内并绕内导体定位。

Microwave energy-delivery device and system

A microwave ablation device including a cable assembly configured to connect a microwave ablation device to an energy source and a feedline in electrical communication with the cable assembly. The microwave ablation device further includes a balun on an outer conductor of the feedline, and a temperature sensor on the balun sensing the temperature of the balun.

Microwave energy-delivery device and system

A microwave ablation device including a handle assembly fluidly enclosing a portion of a microwave feedline and a cooling assembly and a tubular member extending from the handle assembly and enclosing a distal portion of the feedline and the cooling assembly. The distal portion of the feed line terminates in a radiating section and the distal portion of the cooling assembly is configured to cool the radiating section. The microwave ablation device also includes a flexible cable assembly connected to the handle assembly and enclosing a proximal portion of the feedline, the flexible cable assembly configured to connect the feedline to an energy source, and a temperature sensing system associated with the cable assembly and configured to sense a temperature profile of tissue surrounding the distal radiating end of the tubular member.

Electrosurgical snare

The disclosure relates to three enhancements for a surgical snare: an electrosurgical snare in which the loop of snare wire extends from an energy transfer surface which can act both as a physical reaction surface for mechanical cutting using the snare and as a region for emitting electromagnetic energy; a surgical snare having a snare wire having a first end connected to a movable boss that is slidably mounted on a coaxial cable; and a surgical snare having an end cap with a distally facing reaction surface and a pair of channels for guiding a snare wire, where the distally facing reaction surface is arranged to contact the retractable loop when fully retracted.

electrosurgical system

다양한 실시예는 생물학적 조직을 치료하기 위한 전기 수술 시스템을 개시한다. 전기 수술 시스템은, 마이크로파 에너지를 공급하도록 구성된 전기 수술용 생성기; 신체 내의 치료 부위에 최소 침습적 삽입을 위한 조향 가능한 삽입 코드를 갖는 수술용 관찰 디바이스; 및 상기 삽입 코드 내에 위치된 기기 채널에 맞는 크기의 전기 수술 기기를 포함한다. 상기 전기 수술 기기는 마이크로파 에너지를 운반하도록 배열된 가요성 동축 케이블; 및 상기 동축 케이블의 원위 단부에 연결되고 마이크로파 에너지를 수신하도록 구성된 방사 팁 부분을 포함하고, 상기 방사 팁 부분의 최대 외부 직경은 1.0mm 이하이고, 상기 방사 팁 부분의 최대 외부 직경은 상기 동축 케이블의 외부 직경보다 더 작다. 또한, 상기 방사 팁 부분은 마이크로파 에너지를 운반하기 위한 근위 동축 전송 라인; 및 상기 근위 동축 전송 라인의 원위 단부에 장착된 원위 바늘 팁을 포함하고, 상기 전기 수술 기기는 상기 기기 채널의 원위 단부를 넘어 상기 원위 바늘 팁을 연장시켜 생물학적 조직을 천공하도록 상기 기기 채널 내에서 활주 가능하고, 상기 원위 바늘 팁은 마이크로파 에너지를 생물학적 조직으로 전달하도록 배열된다.

High-strength microwave antenna assemblies

Various high-strength microwave antenna assemblies are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. The antenna is a dipole antenna with the distal end of the radiating portion being tapered and terminating at a tip to allow for direct insertion into tissue. Antenna rigidity comes from placing distal and proximal radiating portions in a pre-stressed state, assembling them via threaded or overlapping joints, or fixedly attaching an inner conductor to the distal portion. The inner conductor is affixed to the distal portion by, e.g., welding, brazing, soldering, or by adhesives. A junction member made from a hard dielectric material, e.g., ceramic, can be placed between the two portions and can have uniform or non-uniform shapes to accommodate varying antenna designs. Electrical chokes may also be used to contain returning currents to the distal end of the antenna.

Raman spectroscopy probe, Raman spectroscopy apparatus including the Raman spectroscopy probe and elongate assembly

A Raman spectroscopy probe has an elongate body 10. The body 10 has a lumen, i.e. passageway/ through hole/ bore, for receiving an elongate instrument 32. The instrument 32 can be slidably received or can be permanently fixed in the lumen. Raman fibres are arranged outside the lumen, e.g. illumination 28 and collection 30 fibres coaxially surround the bore. Optionally, a single type of fibre may surround the lumen instead and a multiplexer or time-division switch (76, Fig. 11) may switch the function of that fibre between illuminating and collecting. The instrument 32 can be an (endoscopic) surgical instrument, an endoscopic camera. Also disclosed is an electrosurgical device (Fig. 16) having a passageway for receiving an elongate instrument 32. The electrosurgical device is for radiating electromagnetic energy for tissue treatment. It has a tuning element for shaping e.g. microwave radiation. The instrument 32 can be a Raman spectroscopy probe.

Electrosurgical instrument

An electrosurgical instrument for delivering microwave energy to biological tissue, in which a pair of conductive tuning elements are mounted in a radiating instrument tip to shape a microwave radiation profile of the instrument so that the radiation profile is constrained around the instrument tip. Such tuning elements may result in a radiation profile that is substantially spherical around the instrument tip, providing a well-defined ablation volume. The tuning elements act to improve the efficiency with which microwave energy can be delivered into target tissue

Microwave energy-delivery device and system

A microwave ablation device including a cable assembly configured to connect a microwave ablation device to an energy source and a feedline in electrical communication with the cable assembly. The microwave ablation device further includes a balun on an outer conductor of the feedline, and a temperature sensor on the balun sensing the temperature of the balun.

Tissue ablation and assessment system and method of use thereof

The present disclosure provides a system with an innovative electrode designed as an RF/microwave antenna as well as methods to monitor/assess biological tissue and perform surgical procedures.

Electrosurgical snare

Microwave energy-delivery device and system

MICROWAVE ENERGY-DELIVERY DEVICE AND SYSTEM A microwave ablation device including a cable assembly (15) configured to connect a microwave ablation device to an energy source and a feedline (14) in electrical communication with the cable assembly (15). The microwave ablation device further includes a balun (90) on an outer conductor of the feedline (14), and a temperature sensor (102) on the balun sensing the temperature of the balun.

Apparatus and method for vagina remodeling

Eire Vorrichtung zum Umgestalten des weiblichen Genitalgewebes umfassend eine Behandlungsspitze und ein Handstück, wobei die Behandlungsspitze mit dem fernen Ende des Handstückes über ein Verbindungsmittel verbunden ist, wobei das ferne Ende der Behandlungsspitze rechteckig, kegelförmig, kugelförmig, halbkugelförmig, oval oder kreisförmig in der Gestalt ist und eine Oberfläche hat, die eine oder mehrere Energielieferelemente aufweist, wobei die besagten Elemente eine interne Oberfläche und eine epithelkontaktierende Oberfläche haben und wobei die Vorrichtung weiter eines oder mehrere des Folgenden aufweist: (a) einen oder mehrere Temperatursensoren zum Messen der Temperatur an oder unterhalb des Epithels; (b) einen oder mehrere direktionale Sensoren; und (c) eine oder mehrere Tiefenmarkierungen, die die Tiefe der Penetration der Behandlungsspitze in die Vagina anzeigen. An apparatus for reshaping the female genital tissue comprising a treatment tip and a handpiece, the treatment tip being connected to the distal end of the handpiece via a connecting means, the distal end of the treatment tip being rectangular, conical, spherical, hemispherical, oval or circular in shape and a surface having one or more energy delivery elements, said elements having an internal surface and an epithelial contacting surface, and wherein the device further comprises one or more of the following: (a) one or more temperature sensors for measuring the temperature at or below of the epithelium; (b) one or more directional sensors; and (c) one or more depth markers indicating the depth of penetration of the treatment tip into the vagina.

electrosurgical snare

High-strength microwave antenna assemblies

Various high-strength microwave antenna assemblies are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. The antenna is a dipole antenna with the distal end of the radiating portion being tapered and terminating at a tip to allow for direct insertion into tissue. Antenna rigidity comes from placing distal and proximal radiating portions in a pre-stressed state, assembling them via threaded or overlapping joints, or fixedly attaching an inner conductor to the distal portion. The inner conductor is affixed to the distal portion by, e.g., welding, brazing, soldering, or by adhesives. A junction member made from a hard dielectric material, e.g., ceramic, can be placed between the two portions and can have uniform or non-uniform shapes to accommodate varying antenna designs. Electrical chokes may also be used to contain returning currents to the distal end of the antenna.

Microwave energy delivery device and system

System and method of deploying an antenna assembly

A method of deploying an antenna of an ablation device includes the step of placing an introducing member relative to tissue. The introducing member is disposed on a distal end of a handle member. The method also includes the steps of advancing an antenna distally through the handle member and at least partially through the introducer and rotating the handle member about the longitudinal axis thereof relative to the antenna. The method also includes the step of moving the handle member proximally along the longitudinal axis thereof to retract the introducer proximally relative to the antenna such that the antenna is at least partially deployed relative to the introducer to treat tissue.

Electrosurgical instrument with non-liquid thermal transfer

Flow rate monitor for fluid cooled microwave ablation probe

A microwave ablation system includes an antenna assembly configured to deliver microwave energy from a power source to tissue and a coolant source operably coupled to the power source and configured to selectively provide fluid to the antenna assembly via a fluid path. The system also includes a controller operably coupled to the power source and a sensor operably coupled to the fluid path and the controller. The sensor is configured to detect fluid flow through the fluid path and the controller is configured to control the energy source based on the detected fluid flow.

Antenna assemblies for medical applications

A device for directing energy to a target volume of tissue includes a monopole antenna assembly that includes a monopole antenna radiating section having a monopole antenna element surrounded by a dielectric material. The monopole antenna assembly also includes a ground plane disposed at a proximal end of the monopole antenna radiating section, wherein the ground plane is configured to direct energy into the target volume of tissue.

Electrosurgical snare

Electrosurgical instrument

一种用于将微波能量递送到生物组织的电外科器械，其中将一对导电调谐元件安装在辐射器械端头中，以使所述器械的微波辐射剖面成形，使得将所述辐射剖面约束在所述器械端头周围。此类调谐元件可产生围绕所述器械端头大体上是球形的辐射剖面，从而提供明确限定的消融体积。所述调谐元件作用来提高可将微波能量递送到靶组织中的效率。

Electrosurgical Device

Electrosurgical snare

An electrosurgical snare (500), e.g. suitably sized for insertion down the instrument channel of an endoscope, arranged to radiate microwave frequency energy (e.g. having a frequency greater than 1 GHz) from an elongate conductive element (122) within an area encircled by a retractable loop (118). The elongate conductive element (122) and retractable loop (118) may be independently slidable relative to a snare base (512) at a distal end of a sleeve (114) to provide an appropriate device configuration. By controlling the shape of the emitted microwave field, the risk of collateral thermal damage can be reduced.

Electrosurgical system

Various embodiments disclose an electrosurgical system for treating biological tissue. The electrosurgical system comprises: an electrosurgical generator configured to supply microwave energy; a surgical scoping device having a steerable insertion cord for minimally invasive insertion to a treatment site within a body; and an electrosurgical instrument dimensioned to fit within an instrument channel that is located within the insertion cord. The electrosurgical instrument comprises: a flexible coaxial cable arranged to convey the microwave energy; and a radiating tip portion connected at a distal end of the coaxial cable and configured to receive the microwave energy, wherein the radiating tip portion has a maximum outer diameter that is 1.0 mm or less, and wherein the maximum outer diameter of the radiating tip portion is smaller than an outer diameter of the coaxial cable. Also, the radiating tip portion comprises: a proximal coaxial transmission line for conveying the microwave energy; and a distal needle tip mounted at a distal end of the proximal coaxial transmission line, wherein the electrosurgical instrument is slidable within the instrument channel to extend the distal needle tip beyond a distal end of the instrument channel to puncture biological tissue, and wherein the distal needle tip is arranged to deliver the microwave energy into biological tissue.

Microwave energy-delivery device and system

A microwave probe assembly, comprising: a microwave probe; a hub (40) having a port, a proximal portion, and a distal portion; a hub divider (160) disposed within the hub, the hub divider forming a first chamber (147) and a second chamber (143) ; and a hub cap (150) operatively engaged with the distal portion of the hub, the hub cap configured to receive the microwave probe.

Systems and methods for spherical ablations

一种系统，包括：导管，其能够被导航至患者体内的位置；管腔，其延伸通过导管并且在远端终止于孔口中；流体控制器，其与导管的管腔流体连通并且能够将流体供应到期望位置附近的区域或者从期望位置附近的区域移除流体。在期望位置附近的区域中的流体控制影响该期望位置附近的区域的介电常数。该系统包括微波能量源；和连接到微波能量源的微波消融探针，该微波消融探针能够被导航到患者体内的期望位置。从微波能量源向具有受影响的介电常数的期望位置附近的区域中的微波消融探针施加能量会在期望位置附近的区域中导致大体球形组织效果。

electrosurgical loop

A divulgação refere-se a três aprimoramentos para um laço cirúrgico: um laço eletrocirúrgico em que o anel do fio do laço se estende a partir de uma superfície de transferência de energia que pode agir como uma superfície de reação física para corte mecânico usando o laço e como uma região para emitir energia eletromagnética; um laço cirúrgico com um fio do laço que tem uma primeira extremidade ligada a uma protuberância móvel que está montada de modo deslizável num cabo coaxial; e um laço cirúrgico com uma tampa de extremidade com uma superfície de reação voltada distalmente e um par de canais para guiar um fio do laço, onde a superfície de reação voltada distalmente está disposta para entrar em contato com o anel retrátil quando totalmente retraído. The disclosure refers to three enhancements to a surgical snare: an electrosurgical snare in which the loop of the snare wire extends from an energy transfer surface that can act as a physical reaction surface for mechanical cutting using the snare and as a region for emitting electromagnetic energy; a surgical loop with a wire of the loop having a first end connected to a movable protuberance that is slidably mounted on a coaxial cable; and a surgical loop having an end cap having a distally facing reaction surface and a pair of channels for guiding a wire of the snare, where the distally facing reaction surface is arranged to contact the retractable ring when fully retracted.

Minimally invasive microwave ablation device

An electrosurgical device (10) is provided that is operable to deliver microwave energy within a controlled angular expanse to cause targeted tissue ablation. The device (10) comprises a blocking or reflecting material such as cylindrical members (34) that are laterally spaced from the antenna (20) that is operable to emit the microwave energy. The reflecting material creates regions in and/or surrounding the device into which sensors (51), such as thermocouple wires, may be placed to monitor a condition associated with the device or the patient's body.

Microwave ablation needle body, microwave ablation needle and microwave ablation method

本发明的实施例提供了一种微波消融针体、微波消融针及微波消融方法，涉及医疗用品领域。本发明的实施例提供的微波消融针体包括绝缘针头、金属针杆以及电气隔离件。绝缘针头设置有第一容纳腔。金属针杆内设置有第二容纳腔，绝缘针头连接于金属针杆的一端，第一容纳腔与第二容纳腔连通。电气隔离件设置在第二容纳腔内，用于使金属针杆浮地。由于金属针杆处于浮地状态，因而在微波消融时，金属针杆能够发挥扼流作用，不具有辐射功能，抑制微波信号向微波输入方向传播，使得在消融过程中，微波信号仅通过绝缘针头部分向外辐射能量，从而消除了传统设计中的拖尾现象，保证了消融形态的稳定，使其更接近球形。

Electrosurgical instrument with non-liquid thermal transfer

Various embodiments provide an electrosurgical instrument comprising: a flexible coaxial transmission line arranged to convey microwave energy; a radiating tip portion connected at a distal end of the flexible coaxial transmission line and configured to receive the microwave energy, the radiating tip portion comprising: a distal coaxial transmission line for conveying the microwave energy; and a needle tip mounted at a distal end of the distal coaxial transmission line, the needle tip being arranged to deliver the microwave energy into biological tissue; and a heat sink mounted at an interface between the flexible coaxial transmission line and radiating tip portion. The heat sink is in thermal communication with a proximal end of the distal coaxial transmission line and configured to draw thermal energy from the radiating tip portion. Also, a maximum outer diameter of the radiating tip portion is smaller than an outer diameter of the flexible coaxial transmission line. An associated electrosurgical system is also disclosed.

High-Strength Microwave Antenna Assemblies

Various high-strength microwave antenna assemblies are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. The antenna is a dipole antenna with the distal end of the radiating portion being tapered and terminating at a tip to allow for direct insertion into tissue. Antenna rigidity comes from placing distal and proximal radiating portions in a pre-stressed state, assembling them via threaded or overlapping joints, or fixedly attaching an inner conductor to the distal portion. The inner conductor is affixed to the distal portion by, e.g., welding, brazing, soldering, or by adhesives. A junction member made from a hard dielectric material, e.g., ceramic, can be placed between the two portions and can have uniform or non-uniform shapes to accommodate varying antenna designs. Electrical chokes may also be used to contain returning currents to the distal end of the antenna.

Angioplasty and tissue ablation apparatus and method

A coaxial cable apparatus which transmits radio frequency (RF) energy for the ablation of biological tissues has inner and outer coaxial conductors extending substantially the entire length of the cable from a proximal end portion to a distal end portion. An RF antenna is disposed at the distal end portion of the cable and transmits RF energy for ablation of a tissue region to be treated. An angioplasty balloon is disposed over the RF antenna and communicates with a fluid supply and extraction passageway extending through the cable to allow the balloon to be inflated for an angioplasty procedure including tissue ablation, and to be deflated after the procedure is complete.

Microwave energy delivery device and system

Reinforced high strength microwave antenna

High-strength microwave antenna assemblies and methods of use are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. Proximal and distal radiating portions of the antenna assembly are separated by a junction member. A reinforcing member is disposed within the junction member to increase structural rigidity.

Dual-function plasma and non-ionising microwave coagulating electrosurgical instrument and electrosurgical apparatus incorporating the same

An electrosurgical device that is capable of both generating a plasma to perform surface coagulation and emitting a non-ionising microwave field (in the absence of plasma) to perform coagulation at a deeper level. The device comprises a probe tip that is connected to receive radiofrequency (RF) and/or microwave frequency energy from a generator, and also defines a flow path for a gas. The probe tip is adjustable between a first configuration, in which it defines a bipolar (e.g. coaxial) structure to produce a high electric field from the received RF and/or microwave frequency energy across the flow path for the gas to strike and sustain plasma and a second configuration, in which it defines an antenna structure to emit non-ionising microwave energy into tissue.

Surgical antenna and electrosurgical system using the same

A surgical spatula (10, 34) has a flat paddle (38, 62) and a handle extending away from a first end of the flat paddle (38, 62). The handle has a coaxial power feed (64, 130) which is connectable to receive energy from a microwave power source. The paddle (38, 62) contains a microwave conveying structure connected to the coaxial power feed (64, 130). The microwave conveying structure is enclosed at a front end of the paddle (38, 62) opposite to the first end so that microwave radiation is blocked from being emitted from the front end. The microwave conveying structure is open along a side of the paddle (38, 62) which extends away from the first end to permit a microwave radiation field to be emitted from that side.

Surgical snare with ability to deliver electromagnetic energy and/or thermal plasma into biological tissue

A surgical snare comprising a means of delivering thermal plasma on to biological tissue encircled by the snare. The snare may be "cold" snare, i.e. formed from insulating material, or active, i.e. connected to receive RF and/or microwave energy to be radiated into the area encircled by the snare. The surgical snare may thus deliver into biological tissue encircled by a retractable loop any one of (i) a plasma to perform surface coagulation, (ii) a non-ionising microwave field (in the absence of plasma) to perform coagulation at a deeper level, and (iii) an RF field to assist with cutting.

Curved microwave antenna

Electrosurgical ablation instrument

Vaginal remodeling device and method

本發明提供了修復女性陰道組織的治療器及方法，治療器包含一個治療頭，治療頭末端的形狀可為圓錐形、球形、半球形、橢圓形或圓形，且包含一塊或多塊傳熱片，傳熱片可冷卻陰道表層細胞並同時傳送能量使表層細胞下的組織加熱。在一個實施方案中，所述治療器進一步包含一個或多個下列的設備：一個或多個用來測量表層細胞或其下面的溫度的溫度感應器；一個或多個裝嵌在手柄或治療頭上的方向感應器；一個或多個標記用以顯示治療頭進入陰道的深度。在另一個實施方案中，本發明提供一種具有電極手指套的修復女性陰道組織的治療器。

Microwave and radiofrequency energy-transmitting tissue ablation systems

A surgical instrument for ablating tissue includes a handle portion and a shaft assembly extending distally from the handle portion. The shaft assembly includes an outer shaft, a coaxial cable extending through the outer shaft, and an electrode coupled to a distal portion of the outer shaft. The coaxial cable has a distal portion that forms a microwave antenna configured to transmit microwave energy radially outward and through the outer shaft. The electrode is configured to transmit radiofrequency energy. An actuation of the handle portion activates the transmission of the microwave energy from the microwave antenna and/or the transmission of the radiofrequency energy from the at least one electrode.

Electrosurgical instrument for performing ablation or electroporation of biological tissue

An electrosurgical instrument capable of performing both thermal ablation and electroporation in a minimally invasive manner. The instrument is dimensioned to fit within an instrument channel of an endoscope to enable non-percutaneous insertion. The instrument comprises a radiating tip mounted at a distal end of a coaxial transmission line to receive microwave EM energy from the coaxial transmission line and emit it as a field around the radiating tip. The instrument further comprises an auxiliary transmission line arranged to convey electromagnetic energy having an electroporation waveform to a microelectrode array mounted on the radiating tip. The electroporation waveform may be a radiofrequency or low frequency electromagnetic (EM) signal. The microelectrode array may comprise a plurality of nanoscale conductive electrode elements.

Microwave energy-delivery device and system

MICROWAVE ENERGY-DELIVERY DEVICE AND SYSTEM Abstract An ablation system including an image database storing a plurality of computed tomography (CT) images of a luminal network and a navigation system enabling, in combination with an endoscope and the CT images, navigation of a locatable guide (1032) and an extended working channel to a point of interest. The system further includes one or more fiducial markers, placed in proximity to the point of interest and a percutaneous microwave ablation device (20) for applying energy to the point of interest.

Melt system

本申请涉及一种消融系统，包括存储内腔网络的多个计算机断层成像(CT)图像的图像数据库以及，结合内窥镜和CT图像，使得能够把可定位导向装置与延伸的工作通道导航到感兴趣的点的导航系统。该系统还包括放成接近感兴趣的点的一个或多个基准标记器以及用于向感兴趣的点施加能量的经皮微波消融设备。利用本公开的上述实施例，提供了一种克服现有技术的缺点之一的消融系统。<pb pnum="1" />

Vaginal remodeling device and method

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

Microwave energy delivery device and system

本申请涉及一种微波能量递送设备与系统。更具体而言，涉及一种微波消融设备，包括配置为把微波消融设备连接到能量源的电缆组件以及与该电缆组件电连通的馈线。该微波消融设备还包括馈线外部导体上的平衡‑不平衡变压器以及平衡‑不平衡变压器上用于感测该平衡‑不平衡变压器的温度的温度传感器。

Dual-function plasma and non-ionising microwave coagulating electrosurgical instrument and electrosurgical apparatus incorporating the same

An electrosurgical device that is capable of both generating a plasma to perform surface coagulation and emitting a non-ionising microwave field (in the absence of plasma) to perform coagulation at a deeper level. The device comprises a probe tip that is connected to receive radiofrequency (RF) and/or microwave frequency energy from a generator, and also defines a flow path for a gas. The probe tip is adjustable between a first configuration, in which it defines a bipolar (e.g. coaxial) structure to produce a high electric field from the received RF and/or microwave frequency energy across the flow path for the gas to strike and sustain plasma and a second configuration, in which it defines an antenna structure to emit non-ionising microwave energy into tissue.

Systems and methods for tissue ablation and measurements relating to the same

An exemplary ablation system is provided. The system is designed for safe and efficacious energy delivery into tissue by, for example, emitting energy in a controlled, repeatable manner that allows for feedback and energy emission titration based on sensed parameters (e.g., tissue temperature) measured during ablation. The system may include a switching antenna for both heating of target tissue and radiometry to monitor the temperature of the heated tissue. For example, the switching antenna may include a monopole formed by proximal and distal radiating elements, such that the proximal radiating element includes a short to defeat a choke action of the proximal radiating element. The system further includes a processor for calculating the temperature of the target tissue and estimating volume of the ablation lesion based on the target tissue temperature.

Electrosurgical instrument

Electrosurgical snare

Microwave and radiofrequency energy-transmitting tissue ablation systems

A surgical instrument for ablating tissue includes a handle portion and a shaft assembly extending distally from the handle portion. The shaft assembly includes an outer shaft, a coaxial cable extending through the outer shaft, and an electrode coupled to a distal portion of the outer shaft. The coaxial cable has a distal portion that forms a microwave antenna configured to transmit microwave energy radially outward and through the outer shaft. The electrode is configured to transmit radiofrequency energy. An actuation of the handle portion activates the transmission of the microwave energy from the microwave antenna and/or the transmission of the radiofrequency energy from the at least one electrode.

Dynamically matched microwave antenna for tissue ablation

A microwave ablation probe for providing microwave energy to tissue, the probe comprising: a feedline including an inner conductor, a secondary inner conductor, an insulating spacer, and an outer conductor; and a radiating portion including at least a portion of the inner conductor centrally disposed therein; and either: (a) wherein longitudinal movement of the inner conductor relative to the feedline tunes the radiating portion; or (b) further including: a choke slidably disposed around at least a portion of the feedline and configured to confine the microwave energy to the radiating portion, the choke including an inner dielectric layer and an outer conductive layer, wherein longitudinal movement of the choke relative to the feedline tunes the radiating portion; characterized in that the inner conductor is slidably disposed within the secondary inner conductor to allow the inner conductor to slide in and out of the feedline during tuning while continuing to conduct microwave energy, the inner conductor and the secondary inner conductor being in electromechanical contact.

Surgical snare with ability to deliver electromagnetic energy and/or thermal plasma into biological tissue

A surgical snare comprising a means of delivering thermal plasma on to biological tissue encircled by the snare. The snare may be "cold" snare, i.e. formed from insulating material, or active, i.e. connected to receive RF and/or microwave energy to be radiated into the area encircled by the snare. The surgical snare may thus deliver into biological tissue encircled by a retractable loop any one of (i) a plasma to perform surface coagulation, (ii) a non-ionising microwave field (in the absence of plasma) to perform coagulation at a deeper level, and (iii) an RF field to assist with cutting.

Patent RU2020117031A3

electrosurgical loop

a divulgação refere-se a três aprimoramentos para um laço cirúrgico: um laço eletrocirúrgico em que o anel do fio do laço se estende a partir de uma superfície de transferência de energia que pode agir como uma superfície de reação física para corte mecânico usando o laço e como uma região para emitir energia eletromagnética; um laço cirúrgico com um fio do laço que tem uma primeira extremidade ligada a uma protuberância móvel que está montada de modo deslizável num cabo coaxial; e um laço cirúrgico com uma tampa de extremidade com uma superfície de reação voltada distalmente e um par de canais para guiar um fio do laço, onde a superfície de reação voltada distalmente está disposta para entrar em contato com o anel retrátil quando totalmente retraído. The disclosure relates to three enhancements to a surgical loop: an electrosurgical loop in which the loop wire ring extends from an energy transfer surface that can act as a physical reaction surface for mechanical cutting using the loop. and as a region for emitting electromagnetic energy; a surgical loop with a loop cord having a first end connected to a movable protrusion that is slidably mounted to a coaxial cable; and a surgical loop with an end cap with a distally facing reaction surface and a pair of channels for guiding a loop wire, where the distally facing reaction surface is arranged to contact the retractable ring when fully retracted.

Electrosurgical snare

The disclosure relates to three enhancements for a surgical snare: an electrosurgical snare in which the loop of snare wire extends from an energy transfer surface which can act both as a physical reaction surface for mechanical cutting using the snare and as a region for emitting electromagnetic energy; a surgical snare having a snare wire having a first end connected to a movable boss that is slidably mounted on a coaxial cable; and a surgical snare having an end cap with a distally facing reaction surface and a pair of channels for guiding a snare wire, where the distally facing reaction surface is arranged to contact the retractable loop when fully retracted.

Electrosurgical instrument

Vaginal remodeling device and method

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

Dual-function plasma and non-ionising microwave coagulating electrosurgical instrument and electrosurgical apparatus incorporating the same

표면 응고를 수행하는 플라스마를 생성하고 더 깊은 레벨에서 응고를 수행하는 비-이온화 마이크로파 장(플라스마의 부재 시)을 방출할 수 있는 전기 수술 디바이스. 상기 디바이스는, 생성기로부터 무선주파수(RF) 및/또는 마이크로파 주파수 에너지를 수신하도록 연결되고 또한 가스 흐름 경로를 한정하는 프로브 첨단을 포함한다. 상기 프로브 첨단은 가스 흐름 경로에 걸쳐 수신된 RF 및/또는 마이크로파 주파수 에너지로부터 높은 전계를 생성하여 플라스마를 점화하여 유지하는 2극(예를 들어 동축) 구조물을 한정하는 제1 구성과, 비-이온화 마이크로파 에너지를 조직으로 방출하는 안테나 구조물을 한정하는 제2 구성 사이에서 조절가능하다. An electrosurgical device capable of producing a plasma that performs surface coagulation and emits a non-ionizing microwave field (in the absence of plasma) that performs coagulation at a deeper level. The device includes a probe tip coupled to receive radio frequency (RF) and/or microwave frequency energy from the generator and also defining a gas flow path. The probe tip is a first configuration defining a bipolar (e.g. coaxial) structure that ignites and maintains the plasma by generating a high electric field from the RF and/or microwave frequency energy received over the gas flow path, and non-ionizing It is adjustable between a second configuration defining an antenna structure that emits microwave energy into the tissue.

Electrosurgical instrument

An electrosurgical instrument having a radiating tip portion capable performing tissue ablation using microwave energy and electroporation (e.g. non-thermal irreversible electroporation) in a minimally invasive manner. The electrosurgical instrument may be used to perform microwave ablation and electroporation separately (e.g. sequentially) or simultaneously. The radiating tip portion may be dimensioned to be suitable for insertion into a pancreas via a surgical scoping device, to provide a rapid and accurate alternative to known RF ablation techniques. By enabling tumours within the pancreas to be treated using a minimally invasive procedure, it may be a viable option to use ablation and/or electroporation treatment for both curative as well as palliative reasons.

Raman spectroscopy probe, raman spectroscopy apparatus including the raman spectroscopy probe and elongate assembly

The invention refers to a Raman spectroscopy probe, comprising an elongate body having a distal end and a proximal end, at least one Raman fibre within the elongate body for guiding light between the proximal end and the distal end, and an instrument lumen within the elongate body and extending between the distal end and the proximal end, wherein the instrument lumen is configured to receive an elongate instrument, wherein the at least one Raman fibre is arranged outside of the instrument lumen.

Microwave energy-delivery device and system

A microwave ablation device including a handle assembly fluidly enclosing a portion of a microwave feedline and a cooling assembly and a tubular member extending from the handle assembly and enclosing a distal portion of the feedline and the cooling assembly. The distal portion of the feed line terminates in a radiating section and the distal portion of the cooling assembly is configured to cool the radiating section. The microwave ablation device also includes a flexible cable assembly connected to the handle assembly and enclosing a proximal portion of the feedline, the flexible cable assembly configured to connect the feedline to an energy source, and a temperature sensing system associated with the cable assembly and configured to sense a temperature profile of tissue surrounding the distal radiating end of the tubular member.

Electrosurgical ablation instrument

一种具有微波消融天线的电外科器械，所述电外科器械的尺寸被设定成适用于经由外科观察装置插入到胰腺中，以提供针对已知RF消融技术的快速和准确的替代方案。所述电外科器械包括：近侧同轴传输线，所述近侧同轴传输线用于传送微波电磁(EM)能量；远侧辐射部分；以及中间阻抗变换器，所述中间阻抗变换器被布置成将所述同轴传输线的阻抗与所述远侧辐射部分的阻抗匹配，其中所述远侧辐射部分包括用于发射由所述同轴传输线传送的所述微波EM能量的微波天线，其中所述远侧辐射部分具有小于所述同轴传输线的外径的最大外径。利用这些特征，所述器械能够经由小直径结构递送微波能量。

Microwave energy-delivery device and system

本申请涉及一种微波能量递送设备与系统。更具体而言，涉及一种微波消融设备，包括配置为把微波消融设备连接到能量源的电缆组件以及与该电缆组件电连通的馈线。该微波消融设备还包括馈线外部导体上的平衡-不平衡变压器以及平衡-不平衡变压器上用于感测该平衡-不平衡变压器的温度的温度传感器。