863results 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.

Provided are systems, devices, and methods for energy delivery to a patient to treat a medical condition. A system for delivering energy to a patient includes: a treatment device having one or more energy delivery elements. The treatment device can deliver energy, such as ultrasound energy, to a target location of the patient via the one or more energy delivery elements. The energy delivery to the target location treats a medical condition of the patient.

Embodiments of the present invention are directed to the treatment of hypertension, diabetes, obesity, heart failure, end-stage renal disease, digestive disease, urological disease, cancers, tumors, pains, asthma, pulmonary arterial hypertension, and chronic obstructive pulmonary disease by delivering of an effective amount of formulations at desired temperature to target tissue. The formulations include gases, vapors, liquids, solutions, emulsions and suspensions of one or more ingredients. The temperature may enhance safety and efficacy of the formulations for the treatments. The amounts of the formulation and / or energy are effective to injury or damage the tissues to have a benefit of symptom relive.

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.

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.

Embodiments of the present invention are directed to the treatment of hypertension, diabetes, obesity, heart failure, end-stage renal disease, digestive disease, urological disease, cancers, tumors, pains, asthma, pulmonary arterial hypertension, and chronic obstructive pulmonary disease by delivering of an effective amount of formulations at desired temperature to target tissue. The formulations include gases, vapors, liquids, solutions, emulsions and suspensions of one or more ingredients. The temperature may enhance safety and efficacy of the formulations for the treatments. The amounts of the formulation and / or energy are effective to injury or damage the tissues to have a benefit of symptom relive.

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

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.

Devices and methods are disclosed for treating tissue with microwave energy. Such devices and methods are able to treat cavities or surface tissue by creating one or more area or volumetric lesions. Also disclosed are flexible, low-profile devices that can be inserted non-invasively or minimally invasively near or into the target tissue as well as microwave antennas designed to generate ablation profiles that can ablate a large area or a large volume of target tissue in a single ablation. The devices include 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 a metallic object and the use of additional shaping elements to shape the microwave field.

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.

An ablation device includes an outer tube; an ablation assembly, provided at a distal end of the outer tube and including a radially collapsible and expandable support frame and a plurality of electrodes arranged on the support frame, wherein at least one first electrode used for mapping is included in the plurality of electrodes; and a connector, provided at a proximal end of the outer tube, the connector including a plurality of conductive terminals, the connector being electrically connected to the plurality of electrodes through the plurality of conductive terminals, the plurality of conductive terminals including at least one first terminal, and each first terminal being electrically connected to one corresponding first electrode in a one-to-one correspondence mode, so that when the connector is connected to an external mapping device, the first electrode implements mapping through the first terminal.

The invention relates to a microwave ablation needle capable of dynamically measuring temperature, and belongs to the technical field of medical instruments. The microwave ablation needle comprises a needle head, a needle rod, a metal outer sleeve and an ablation needle handle, the two ends of the needle rod are fixedly connected with the ablation needle handle and the needle head respectively, and the metal outer sleeve is located on the outer side of the needle rod; the outer side of the metal outer sleeve is provided with a double-layer outer sleeve composed of a first elastic outer sleeve and a second elastic outer sleeve, the double-layer outer sleeve is tightly attached to the metal outer sleeve, and a temperature measuring element is arranged between the first elastic outer sleeve and the second elastic outer sleeve. A movable handle fixedly connected with the double-layer outer sleeve is arranged at the end, close to the ablation needle handle, of the needle rod. According to the invention, real-time temperature monitoring can be carried out on an actual ablation area target spot clinically, and the effectiveness and safety of interventional ablation are confirmed, so that the requirement of precise microwave ablation is met.

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.

An apparatus for generating a microwave signal including a housing with a plurality of walls defining an interior volume, an inlet opening and an outlet opening. The apparatus also includes a power supply positioned in the interior volume and a first microwave generator and a second microwave generator each operably coupled to the power supply, and each positioned in the interior volume spaced apart from the power supply. The apparatus also includes a heat sink positioned in the interior volume that contacts the power supply, the first microwave generator and the second microwave generator. The apparatus also includes a fan positioned in the interior volume at a first end of the heat sink. The fan is configured to draw an airflow into the interior volume from the inlet opening and move the airflow through the heat sink.

The related-art medical treatment instrument that allows radiation of a microwave from both electrodes has had one or more of the following various problems caused by the microwave radiation from the both electrodes. The various problems include, for example, (1) occurrence of scissoring (occurrence of sparks), (2) heat generation and radiation to a back side of a radiation surface in contact with the both electrodes, (3) inefficiency of the microwave radiation through use of a microwave splitter, (4) falling off of both antennas, (5) a weak gripping force, (6) difficulty in grabbing a thin tissue such as a membrane, and (7) a microwave radiation range being not able to be grasped easily. It has been confirmed that a configuration of a medical treatment instrument according to the present invention solves the one or more of the problems described above, and the present invention has been completed.

The invention provides a multi-mode fusion precise ablation system. The multi-mode fusion precise ablation system comprises a processing unit, a radio frequency treatment unit, a microwave treatment unit, an ultrasonic treatment unit, a monitoring unit, a navigation unit and a positioning unit. Wherein the processing unit is used for processing a data instruction and transmitting a signal, the radio frequency treatment unit comprises a driving device, the radio frequency treatment unit is used for performing radio frequency ablation treatment, the microwave treatment unit is used for microwave interventional treatment, and the ultrasonic treatment unit is used for ultrasonic ablation treatment. The monitoring unit comprises an image monitoring module and a body data monitoring module, and the navigation unit comprises a medical software module and a system integration module; multiple ablation modes are formed by combining the radio frequency treatment unit, the microwave treatment unit and the ultrasonic treatment unit, the high-precision positioning unit and the navigation unit are arranged, the appropriate ablation modes or combined modes can be selected according to tumor characteristics, the ablation area can be accurately controlled, and millimeter-level precision tumor ablation is achieved.

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.