644results about "Surgical instruments using microwaves" patented technology

An electrosurgical instrument comprising an end effector is disclosed. The end effector comprises a first jaw and a second jaw. The first jaw comprises a first electrode. The end effector is movable from an open configuration to a closed configuration to grasp tissue. The second jaw comprises a second electrode configured to deliver a first monopolar energy to the tissue, a third electrode, and a conductive circuit selectively transitionable between a connected configuration with the third electrode and a disconnected configuration with the third electrode. In the connected configuration, the third electrode is configured to cooperate with the first electrode to deliver bipolar energy to the tissue. The conductive circuit defines a return path for the bipolar energy. In the disconnected configuration, the first electrode is configured to deliver a second monopolar energy to the tissue.

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.

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 present invention includes systems, devices and methods for treating and / or diagnosing a heart arrhythmia, such as atrial fibrillation. Specifically, the present invention provides a system including a diagnostic catheter and an ablation catheter. The diagnostic catheter includes a shaft, multiple dipole mapping electrodes and multiple ultrasound transducers. The ablation catheter is slidingly received by the diagnostic catheter shaft.

Methods of ablating a basivertebral nerve (BVN) in a lumbar or sacral vertebral body of a patient. An introducer and one or more instruments are selected after a pre-surgical evaluation. The introducer has a handle coupled to a shaft defining a central channel and an opening at a distal tip thereof. The introducer is inserted through a pedicle of the vertebral body such that its opening reaches a cancellous portion of the vertebral body. The one or more instruments are delivered through the central channel. A distal deflectable section of the one or more instruments is advanced past the introducer's opening to position it proximate to the BVN in a posterior midline section of the vertebral body. An active element is extended relative to at least a portion of the one or more instruments. Energy is delivered to the active element to ablate at least a portion of the BVN.

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.

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 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.

The present invention discloses a biopsy needle with a hemostatic function, comprising: a sampling needle; a cutting needle assembly, comprising a cutting needle and an inner insulating layer covering the outer periphery of the cutting needle, the cutting needle being sleeved on the outer periphery of the sampling needle, the distal end of the cutting needle being exposed from the inner insulating layer and forming a first electrode with the distal end of the sampling needle; a trocar assembly, comprising a trocar and an outer insulating layer, the outer insulating layer covering the outer periphery of the trocar, the distal end of the trocar being exposed from the outer insulating layer to form a second electrode, the trocar assembly being configured to be detachably connected to the handle of the biopsy needle through a trocar plug so that the trocar is coaxially sleeved on the outer periphery of the cutting needle; the proximal end of the sampling needle and the proximal end of the trocar plug are electrically connected to a power supply device respectively, so as to realize that after taking out the sample tissue, the sampling needle and the cutting needle assembly are inserted into the trocar, and the first electrode and the second electrode are passed with electric energy to perform a hemostatic operation on the needle track.

A method of treating a soft palate in a patient may involve advancing a tissue treatment portion of a soft palate treatment device through the patient's mouth, contacting a treatment surface of the tissue treatment portion with mucosal tissue of the soft palate, and delivering energy from the tissue treatment portion through the mucosal tissue to a target tissue in the soft palate beneath to the mucosal tissue, to change at least one property of the target tissue. The method may further involve cooling the mucosal tissue with a cooling member on the treatment surface of the tissue treatment portion and removing the tissue treatment portion from the mouth.

An access device for accessing an intervertebral disc having an outer shield comprising an access shield with a larger diameter (˜16-30 mm) that reaches from the skin down to the facet line, with an inner shield having a second smaller diameter (˜5-12 mm) extending past the access shield and reaches down to the disc level. This combines the benefits of the direct visual microsurgical / mini open approaches and the percutaneous, “ultra-MIS” techniques.

Various embodiments provide an interface joint for interconnecting an electrosurgical generator, a fluid supply, and an electrosurgical instrument. The interface joint comprises a housing having: an electrical inlet for receiving radiofrequency (RF) electromagnetic (EM) energy and / or microwave frequency EM energy from the electrosurgical generator; a fluid inlet for receiving fluid from the fluid supply; and, an outlet. The interface joint also comprises a single cable assembly for connecting the outlet to an instrument tip of the electrosurgical instrument. The single cable assembly comprises: a flexible shaft having: a coaxial cable that is connected to the electrical inlet; and a fluid channel that is in fluid communication with the fluid inlet. The housing includes a first portion and a second portion, the second portion being attached to the single cable assembly such that rotation of the second portion effects rotation of the single cable assembly; and the first portion being rotatable relative to the second portion. The first portion includes a first inlet, and the second portion includes a second inlet, wherein the first inlet is one of the fluid inlet or electrical inlet, and the second inlet is the other of the fluid inlet or electrical inlet.

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.

Microwave antennas and devices incorporating such antennas usable for performing procedures on or within a patient's body using a shaped microwave field.

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.

Systems and methods for treating a patient's mucus hypersecretion condition are disclosed herein. Certain implementations may involve a method for reducing mucus secretion in an upper airway of a patient to treat at least one of post nasal drip or chronic cough. The method may include advancing a treatment delivery portion of an energy-based treatment device into a nostril of the patient. The treatment delivery portion may contact mucosal tissue of the upper airway without piercing the mucosal tissue. The treatment delivery portion may deliver treatment to at least one tissue selected from the group of the mucosal tissue and another tissue underlying the mucosal tissue to modify a property of the at least one tissue and thus treat at least one of post nasal drip or chronic cough in the patient.

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.

The invention relates to an ablation catheter assembly for treating anal fistula, the ablation catheter assembly comprises a catheter, a cable, a guide head, a PTFE part and a near-end connecting piece, a first channel and a second channel are formed in the catheter, and the first channel and the second channel extend in the axial direction; within the length range of the first channel and the second channel, the first channel and the second channel are mutually independent and are not communicated with each other, a connecting cavity is formed at the far end of the catheter, the far end of the first channel and the far end of the second channel are both communicated with the connecting cavity, and the first channel and the second channel are communicated with the connecting cavity. The far end of the first channel is communicated with the far end of the second channel; the catheter is further provided with at least three flushing openings, the flushing openings are located at the position of the connecting cavity, the flushing openings are directly communicated with the connecting cavity, and the inner diameter of each flushing opening is not larger than 0.1 mm. Tissues around the fistula are denatured through microwaves, coagulative necrosis is formed, and the purpose of safely treating anal fistula is achieved.

The invention provides an ablation needle assembly and an ablation system. The ablation needle assembly comprises a hollow outer sleeve and an ablation needle, the outer sleeve is movably arranged outside an electrode needle body of the ablation needle in a sleeving mode and is detachably and rotatably connected with an ablation handle, so that after ablation operation is completed, the ablation needle and the outer sleeve can be detached, the outer sleeve is still left in tissue, a channel is provided for other operations such as biopsy, and the ablation needle assembly is simple in structure and convenient to use. Repeated puncture is avoided, damage to tissue is reduced, and biopsy operation can be more convenient and efficient. Furthermore, the ablation handle is rotationally connected with the outer sleeve, so that the ablation handle can drive the electrode needle main body to rotate relative to the outer sleeve when rotating relative to the outer sleeve, that is, the outer sleeve and the electrode needle main body are not of an integrated structure, and when the ablation needle needs to be rotated, the outer sleeve can be kept not rotating, so that damage to tissues is reduced; and the rotation resistance is small. Therefore, the ablation needle assembly and the ablation system are particularly suitable for radiofrequency ablation treatment of hypertrophic cardiomyopathy.

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.

Catheter for visualizing ablated tissue comprises a catheter body; a distal tip positioned at a distal end of the catheter body, the distal tip defining a illumination cavity, the distal tip having one or more openings for exchange of light energy between the illumination cavity and tissue; a light directing member disposed within the illumination cavity, the light directing member being configured to split light energy received from a light source into multiple beams and to such beams to the tissue through the corresponding more openings in the distal tip.

A method of analysis using mass and / or ion mobility spectrometry or ion mobility spectrometry is disclosed comprising: using a first device to generate aerosol, smoke or vapour from one or more regions of a first target of biological material; and mass and / or ion mobility analysing and / or ion mobility analysing said aerosol, smoke, or vapour, or ions derived therefrom so as to obtain first spectrometric data. The method may use an ambient ionisation 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.

A catheter tip is disclosed comprising a tip electrode comprising a ledge feature, and a center cavity and a manifold assembly comprising a fluid lumen manifold and a stop tube. The stop tube can be coupled to the fluid lumen manifold and configured to abut the ledge feature such that a distal end of the fluid lumen manifold extends a pre-determined distance into the center cavity of the tip electrode. The fluid lumen manifold can comprise a plurality of sideholes which can be sized and configured to distribute an irrigant to the tip electrode. The catheter tip can comprise a flexible tip electrode.

At least some embodiments of the present disclosure are directed to systems, apparatus, and methods for creating a shunt in a patient. In some embodiments, a shunting catheter includes a catheter shaft including a shaft lumen and a slicing element. In certain embodiments, the slicing element includes a slicing element shaft, a puncture element, and a slicer.

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.