443results about "Surgical instruments using microwaves" patented technology

The invention provides a microwave ablation control system and method used based on nuclear magnetic resonance, and belongs to the technical field of ablation control, and the system comprises an MRI rapid temperature measurement module, a temperature prediction module, a microwave ablation power control module, a tissue impedance monitoring module and a data fusion processing module. The microwave ablation instrument, the MRI rapid temperature measurement module and the tissue impedance monitoring module are all connected with the data fusion processing module, the microwave ablation instrument is further connected with a microwave ablation needle inserted in ablation area tissue, and the temperature prediction module and the microwave ablation power control module operate on the data fusion processing module; in combination with the method, the defects that in an existing microwave ablation control method used based on nuclear magnetic resonance, due to the fact that the MRI temperature measurement sequence collection and reconstruction speed is limited, the closed loop control period is too long, the nonlinear change of the heating rate caused by tissue impedance mutation cannot be coped with, and then the overtemperature or undertemperature problem occurs are overcome.

Methods and devices for treating nasal airways are provided. Such devices and methods may improve airflow through an internal and / or external nasal valve, and comprise the use of mechanical re-shaping, energy application and other treatments to modify the shape, structure, and / or air flow characteristics of an internal nasal valve, an external nasal valve or other nasal airways.

The invention relates to the technical field of temperature control, in particular to a multi-dimensional compensation ablation system temperature control system, method and device and a medium. The system calculates a medium texture index representing the structural change of the load medium by synchronously acquiring electrical parameters and ultrasonic image data; constructing an anti-interference control model comprising an extended state observer, and defining energy transmission loss caused by contact thermal resistance as an extended state variable; calculating an adaptive correction factor based on the texture index, dynamically correcting the state updating process of the observer to obtain an energy loss correction estimated value, and constructing a compensation control model to adjust the output power according to the energy loss correction estimated value; according to the invention, the technical problem of incomplete heating caused by false high temperature of the sensor and system misjudgment due to state deterioration of the contact interface is effectively solved; accurate reconstruction and closed-loop compensation of effective heat flow in a non-ideal contact environment are realized, sufficient energy penetration can still be maintained even if contact thermal resistance is sharply increased, and the integrity of an ablation area is guaranteed.

A device for ablating target tissue of a patient with electrical energy is provided. An elongate shaft includes a proximal portion and a distal portion, and a radially expandable element is attached to the distal portion. An ablation element for delivering electrical energy to target tissue is mounted to the radially expandable element. The device can be constructed and arranged to ablate the duodenal mucosa of a patient while avoiding damage to the duodenal adventitial tissue. Systems and methods of treating target tissue are also provided.

The invention discloses an AI optimization intelligent diagnosis and treatment system and method with an intelligent puncture mechanical arm combined with a microwave ablation instrument, and relates to the technical field of AI treatment. According to the moving track of the puncture mechanical arm and the appearance characteristics of the puncture needle, simulating the three-dimensional space position of a puncture path in the body of a patient, analyzing the contact condition of the puncture path and the visceral organs, constructing a danger degree evaluation model of the contact condition of the puncture path and the visceral organs, and obtaining an evaluation result of the danger degree of the contact condition of the puncture path and the visceral organs; according to the method, the actual three-dimensional path is obtained according to the operation deviation condition of the mechanical arm, then the danger value is judged according to the contact condition of the mechanical arm and the visceral organs, and therefore the optimal path is screened out, and the treatment safety is improved.

Catheter systems and methods for the selective and rapid application of DC voltage to drive irreversible electroporation are disclosed herein. In some embodiments, an apparatus includes a voltage pulse generator and an electrode controller. The voltage pulse generator is configured to produce a pulsed voltage waveform. The electrode controller is configured to be operably coupled to the voltage pulse generator and a medical device including a series of electrodes. The electrode controller includes a selection module and a pulse delivery module. The selection module is configured to select a subset of electrodes from the series of electrodes. The selection module is configured identify at least one electrode as an anode and at least one electrode as a cathode. The pulse delivery module is configured to deliver an output signal associated with the pulsed voltage waveform to the subset of electrodes.

Methods, devices and systems are described for decreasing the activity of the sympathetic nervous innervation to and from the lungs and the vessels supplying the lungs to treat pulmonary medical conditions such as asthma. In one embodiment, the method may involve advancing an intravascular instrument to a target location in a blood vessel within the intercostal vasculature to ablate either or both the sympathetic afferent and efferent nerves lying within the paravertebral gutter including the visceral fibers that travel to the cardiothoracic cavity and abdominopelvic viscera and the T1 to T4 / 5 sympathetic chain. In another embodiment, an intravascular instrument may be advanced to the bronchial vessels to ablate either or both the sympathetic afferent and efferent nerves in and around the posterior pulmonary plexus. In one embodiment the ablative agent is a neurolytic agent delivered in a gel. This approach may be utilized to treat other cardiac and pulmonary diseases.

A method for displaying real-time ablation growth projections is provided. The method includes applying, by a processor, an ablation model to image data of a patient. The ablation model is based on a position of an ablation probe, and the ablation probe is coupled to the processor. The method also includes displaying, on a display coupled to the processor, a projected ablation zone on the image data. The projected ablation zone is based on ablation parameters and the position of the ablation probe. The projected ablation zone includes a margin showing a confidence level. The method further includes ablating by the ablation probe. The ablating is based on an evaluation of the projected ablation zone with respect to a target. A system for performing a microwave ablation procedure is provided. A non-transitory computer-readable storage medium storing instructions is provided.

Methods and devices for treating nasal airways are provided. Such devices and methods may improve airflow through an internal and / or external nasal valve, and comprise the use of mechanical re-shaping, energy application and other treatments to modify the shape, structure, and / or air flow characteristics of an internal nasal valve, an external nasal valve or other nasal airways.

Described herein are various implementations of systems and methods for treating back pain (e.g., chronic low back pain) caused by different (e.g., independent) sources of pain, such as pain originating or stemming from intervertebral discs, from vertebral endplates, and / or from intraosseous locations within one or more vertebral bodies. For example, methods for treating back pain (e.g., chronic low back pain) may involve both vertebral fusion (e.g., arthrodesis or spondylodesis to fuse adjacent vertebrae) and neuromodulation (for example, ablation of nerves within or surrounding one or more of the adjacent vertebrae). The neuromodulation may facilitate treatment of pain that is generated by insertion of fusion hardware.

An energy delivery device is disclosed that includes an antenna that is operable in a first mode in which the antenna provides microwave energy to tissue and a second mode in which the antenna provides radiofrequency (RF) energy to tissue.

A microwave ablation probe includes a handle configured to operably couple a supply cable to a probe needle, and a gasket positioned in the handle to seal a joint between the handle and the supply cable. The gasket is configured to allow a predetermined amount of rotation of the supply cable relative to the handle and to prevent rotation of the supply cable relative to the handle of more than the predetermined amount.

A system (12), comprising: a display device (24); a memory (20) comprising instructions (32); and one or more processors (16) configured by the instructions to: receive an ablation plan comprising plural ablation zones corresponding to plural applicators, the plural ablation zones comprising one or more single ablation zones and one or more composite ablation zones; and provide on the display device a representation of the ablation plan (58) and a visual distinction between sequentially activated applicators and simultaneously activated applicators, the plural applicators comprising the sequentially activated and simultaneously activated applicators.

Various embodiments provide an electrosurgical cutting instrument including an energy transfer structure for delivering high frequency electromagnetic energy and / or microwave electromagnetic energy, and an instrument tip attached to a distal end of the energy transfer structure, the instrument tip including a first jaw and a second jaw. The first jaw includes a first pair of electrodes electrically insulated from one another. The first pair of electrodes is coupled to the energy transfer structure. The first jaw and the second jaw are movable relative to one another between a closed position in which the first jaw and the second jaw are positioned alongside one another, and an open position in which the second jaw is separated from the first jaw by a gap for receiving biological tissue. The first jaw extends distally beyond the second jaw in the closed position. The first jaw includes a distal end surface, and the first pair of electrodes are exposed at the distal end surface.

The invention relates to a method for determining ablation parameters for ablation therapy, comprising:-receiving (100) sensor data acquired by at least two sensors (10) spatially arranged along a shaft (5) of an ablation probe (2), each sensor having a different sensor position (11, T1, T2, T3, T4), the sensor data for the at least one measured parameter comprises two measured values obtained at different sensor positions (11, T1, T2, T3, T4); -determining (200) an ablation parameter on the basis of the sensor data and / or measured values of the same measurement parameter at different sensor locations (11, T1, T2, T3, T4); -providing (300) the determined ablation parameters.

The invention provides a signal handling unit for handling signals having a first frequency and signals having a second, lower, frequency. The signal handling unit comprises: a signal divider electronically connected to a first port by a common signal line; a first signal branch electronically connecting the signal divider to a second port, wherein the first signal branch comprises a directional interface adapted to: convey only signals at the first frequency from the signal divider to the second port; and a second signal branch electronically connecting the signal divider to a third port, wherein the second signal branch is adapted to convey signals at the first and second frequency from the signal divider to the third port.

One or more example embodiments relates to a method for determining an ablation parameter for an ablation treatment, the method comprising receiving sensor data acquired by at least two sensors, the at least two sensors being spatially arranged along a shaft of an ablation probe, each of the at least two sensors having a distinct sensor position, wherein the sensor data for at least one measurement parameter includes two measured values obtained at different sensor positions; determining the ablation parameter based on at least one of the sensor data or the two measured values of the same measurement parameter at different sensor positions; and providing the determined ablation parameter.

Various aspects of the present invention are directed towards apparatuses, systems, and methods that may include a tissue ablation system. The tissue ablation system may include a plurality of ablation devices, each ablation device being configured to provide ablation energy, at least one ablation generator configured to provide ablation power to at least one of the plurality of ablation devices, and a controller configured to cause each of the plurality of ablation devices to selectively receive ablation power and configured to cycle through activation of a plurality of ablation states.

A filter assembly for a surgical plume evacuation console includes a filter housing and a filter. The filter housing defines an inlet, an inlet chamber in communication with the inlet, an outlet chamber, and an outlet in communication with the outlet chamber. The filter is disposed within the filter housing between the inlet chamber and the outlet chamber and is formed from a plurality of layers. A plume flow path of a surgical plume evacuated from a surgical site is defined from the inlet, through the inlet chamber, through the filter, through the outlet chamber, and out of the outlet. A surgical plume evacuation console includes the filter assembly, a console housing, a suction generator disposed within the console housing and coupled to the plume flow path, and an exhaust assembly disposed within the console housing and coupled to the suction generator.

The present invention relates to a method (100) for dielectric spectroscopy of a material or a tissue under test, comprising the following steps: measuring (110) the reflection coefficient (11) signal as a function of the frequency of said material or tissue under test, by a vector network analyzer (3), wherein a single applicator (5) is in contact with said material or a tissue under test and wherein the applicator (5) is operatively connected to the vector network analyzer (3); multiplying (120) the reflection coefficient (11) signal with the frequency behavior of an ultra-wide band (UWB) signal as a synthetic applicator excitation; converting (130) the signal of the previous step into the time domain by an Inverse Fourier Transform (IFT); suppressing (140) part of the converted signal of the converting step (130), according to the applicator (5) geometry; converting back (150) the signal of the suppressing step (140) to the frequency domain; and extracting (160) from the frequency signal converted the dielectric properties (162) and / or estimating (170) the dimension of the material or a tissue under test and / or of an ablated area of the material or a tissue under test thereof. The present invention also relates to an apparatus for dielectric spectroscopy (1).

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.

A microwave ablation probe (100), comprising: an applicator (106) having a radiating section (106a) arranged to emit electromagnetic energy to cause heating in tissue; a feed cable (108) having a distal end and a proximal end and being arranged to supply electromagnetic energy to the applicator (106), the applicator (106) being coupled to the distal end of the feed cable (108); a flexible tubular member (110) comprising a shaft portion (111) and a tip portion (112), the tip portion (112) located at a distal end of the tubular member (110) and being adapted for insertion into tissue, wherein the applicator (106) and at least part of the feed cable (108) are located within the tubular member (110); and a restriction means (114) arranged to restrict the separation between the applicator (106) and the tip portion (112) of the tubular member (110). The restriction means (114) comprises a flexible tethering member (116) extending between the applicator (106) and the tip portion (112), the tethering member (116) being arranged to restrict at least proximal movement of the applicator (106) relative to the tip portion (112) of the tubular member (110). Also disclosed is a method (1000) of manufacturing the ablation probe (100).

An ablation system includes a computing device and an ablation device configured to ablate a target. The computing device is configured to generate a three dimensional model based on functional respiratory imaging data of a patient and to predict an ablation zone based on the functional respiratory imaging data.

Methods, devices and systems are described for decreasing the activity of the sympathetic nervous innervation to and from the lungs and the vessels supplying the lungs to treat pulmonary medical conditions such as asthma. In one embodiment, the method may involve advancing an intravascular instrument to a target location in a blood vessel within the intercostal vasculature to ablate either or both the sympathetic afferent and efferent nerves lying within the paravertebral gutter including the visceral fibers that travel to the cardiothoracic cavity and abdominopelvic viscera and the Tl to T4 / 5 sympathetic chain. In another embodiment, an intravascular instrument may be advanced to the bronchial vessels to ablate either or both the sympathetic afferent and efferent nerves in and around the posterior pulmonary plexus. In one embodiment the ablative agent is a neurolytic agent delivered in a gel. This approach may be utilized to treat other cardiac and pulmonary diseases.

A device for heating tissue above a prescribed temperature useful in the treatment of emphysema or COPD is provided. [Solution] A heating energy signal generator and one or more electromagnetic energy signal applicators that receive an output signal from the heating energy signal generator and couple electromagnetic energy from the heating energy signal generator to body tissue, the one or more electromagnetic energy signal applicators having one or more signal applicators selected from the group consisting of electrodes, coils, and antennas, and a controller connected to receive temperature signals indicative of the temperature of the tissue at one or more locations within the body, the controller configured to adjust the heating energy delivered to the body from the heating energy signal generator based at least in part on the temperature signal.

A patient isolator for a microwave generator includes a DC block grounded to a microwave module of the microwave generator, a proximal absorber wrapped around a proximal portion of the DC block, and a distal absorber wrapped around a distal portion of the DC block and separated from the proximal absorber by a gap.

The invention provides an electrosurgical measurement device for acquiring measurements from an electrosurgical system comprising at least one treatment signal line for carrying electromagnetic treatment signals from a generator to an instrument for delivery to a target. The device comprises: a measurement unit adapted to generate a measurement signal having a lower power than the treatment signal; and a coupling unit adapted to couple a measurement signal line connected to the measurement unit to the treatment signal line. The coupling unit is adapted to: transmit a measurement signal from the measurement signal line to the treatment signal line; transmitting a reflected measurement signal from the treatment signal line to a measurement signal line; the reflection treatment signal is prevented from being transmitted from the treatment signal line to the measurement unit. The measurement unit is further adapted to extract a measurement value from the reflected measurement signal.

An electrosurgical instrument for applying radio frequency (RF) electromagnetic (EM) energy and / or microwave frequency EM energy to biological tissue. The instrument includes an instrument tip having a planar body separating a first conductive element on a first surface from a second conductive element on a second surface. The instrument includes a coaxial feed cable including an inner conductor, an outer conductor coaxial with the inner conductor, and a dielectric separating the inner and outer conductors. The first conductive element includes a pattern configured to set an electrical length of the instrument tip to be greater than an electrical length of a reference instrument tip.

In an illustrative embodiment, systems and methods for treating kidney disease in a human patient are disclosed. A method includes advancing a collapsible array of RF electrodes through a urinary tract of the patient in collapsed form and into a position in or near a renal pelvis. The effector is deployed to an expanded form to engage at least a portion of an interior wall of the renal pelvis. RF energy delivered through the array of electrodes target afferent nerves proximate the interior wall of the renal pelvis to inhibit or destroy their function. eGFR of the patient can be raised after treatment according to the method.

Methods and devices for treating nasal airways are provided. Such devices and methods may improve airflow through an internal and / or external nasal valve, and comprise the use of mechanical re-shaping, energy application and other treatments to modify the shape, structure, and / or air flow characteristics of an internal nasal valve, an external nasal valve or other nasal airways.