2052results about "Surgical instruments for cooling" patented technology

To provide a device assembly and a method for treating heart failure by normalizing an elevated blood pressure in the left atrium of the heart of a mammal.SOLUTION: Disclosed herein is a transcatheter interatrial septum excision device assembly configured to create a sized interatrial aperture between right and left atria of a heart for relief of an elevated left atrial pressure. The device assembly comprises a delivery catheter, a tissue stabilizer attached to a first catheter having a central lumen and a penetrating tip that permits passage of a guidewire, and a cutter attached to a second catheter having a central lumen that permits passage of the first catheter. Alternative configurations comprise a (third) catheter having a central lumen that permits passage of the components to and from the right atrium, a tissue retention mechanism, and an optional coaxial alignment mechanism.SELECTED DRAWING: Figure 1

Embodiments herein relate to a cryoablation probe including a pre-cooler fluid circuit; a working fluid circuit; a vacuum circuit; and a shaft. The shaft includes a supply tube and a return tube surrounding the supply tube. The return tube includes a first polymer layer, wherein the first polymer layer is configured to contain fluid from the working fluid circuit; a reinforcement layer, and a second polymer layer. Other embodiments are also included herein.

An ablation catheter for treating electrical rhythm disorders includes an array of sensor electrodes to detect electrical signals to determine a location of a target region for treatment. If the catheter is not optimally positioned at the target region, a controller uses the detected signals to guide movement of the catheter towards the target region. Once proper positioning is ascertained, the controller activates ablation components within the catheter to deliver energy to modify tissue at the target region.

Novel tools and techniques are provided for implementing intelligent assistance (“IA”) ecosystem, and, in some cases, for implementing extended reality (“XR”) for cardiac arrhythmia procedures. In various embodiments, a computing system might receive device data associated with a device(s) configured to perform a cardiac arrhythmia procedure to provide effective heart rhythm, might receive imaging data associated with an imaging device(s) configured to generate images of a portion(s) of a patient. The computing system might analyze the received device data and imaging data (collectively “received data”), might map the received data to a 3D or 4D representation of the portion(s) of the patient based on the analysis, and might generate and present (using a user experience (“UX”) device) one or more XR images or experiences based on the mapping.

A method for treating a nasal airway to ameliorate one or more symptoms of rhinitis in a patient may involve advancing a treatment tip of a treatment device into a nostril of the patient, contacting nasal mucosa with the treatment tip at a first location overlying an anterior ethmoidal nerve, delivering energy from the treatment tip, to change a property of the anterior ethmoidal nerve, and removing the treatment tip from the nostril.

In an embodiment, a cryoablation probe includes a shaft, where the shaft has a supply tube, a return tube surrounding the supply tube, an insulated portion, wherein a vacuum circuit runs through the insulated portion between the return tube and an insulating shaft, and an expansion chamber extending distally to the insulated portion. The probe further includes a distal tip configured to seal a distal end of the return tube. The distal tip has a tip portion extending distally from the distal end of the return tube and a plug portion configured to be inserted inside of the return tube. The probe includes a compressive element surrounding the return tube and the plug portion of the distal tip, configured to seal the distal tip to the return tube.

In an embodiment, a method for detecting leaks in a shaft of a cryoablation system includes placing a vacuum pump in fluid communication with a return tube and a supply tube; pulling a vacuum within the supply tube and the return tube; after pulling the vacuum for a predetermined amount of time, measuring a vacuum pressure within the supply tube and the return tube; and analysis of the vacuum pressure to assist with identifying leaks in the system.

Methods and system for atrial fibrillation ablations and other cardiac procedures utilizes a cardiac mapping system for navigation and guidance, and includes an additional virtual reality (VR) system and an augmented reality (AR) or mixed reality (MR) system. The Cardiac mapping system utilizes medical images and patient's electrical signals. The virtual reality (VR) system is utilized pre-procedure for visualization and pre-procedure planning. The augmented reality (AR) or mixed reality (MR) system is utilized pre-procedure or intra-procedure. Methods and system are disclosed utilizing pre-built virtual device models which interact with 3D volume rendered structures from patient's CT or MRI of the region of interest (ROI) for the different type of cardiac procedure. With virtual reality (VR) the operator utilizes hand-held sensors. With augmented reality (AR) or mixed reality (MR) a combination of hand gestures and an X-box controller is used to manipulate virtual devices, anatomical structures in the Hologram.

A method for treating nerves in a nasal cavity starts with identifying a patient having a condition occurring outside the nasal cavity. The method then involves activating a console attached to a radiofrequency stylus, advancing a distal tip of the radiofrequency stylus into a nostril of the patient, contacting nasal mucosa lining the nasal cavity with a treatment surface of the distal tip, and delivering radiofrequency energy from one set of bipolar electrodes on the treatment surface of the distal tip to a second set of bipolar electrodes on the treatment surface, to treat at least one nerve underlying the nasal mucosa. Treating the nerve (or nerves) involves modulating activity of the nerve to ameliorate the condition occurring outside the nasal cavity.

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.

A method for treating a nasal airway to ameliorate one or more symptoms of rhinitis in a patient may involve activating a radiofrequency console attached to a stylus, bending a shaft of the stylus in at least one location to a desired angle, advancing a distal tip of the radiofrequency stylus into a nostril of the patient, applying pressure against nasal mucosa lining the nasal airway with a treatment surface of the distal tip, and delivering radiofrequency energy from one set of bipolar electrodes on the treatment surface of the distal tip to a second set of bipolar electrodes on the treatment surface, to treat tissue underlying the nasal mucosa, including at least one nasal nerve. The method may also involve contacting the distal tip with an additional tissue at another location and delivering radiofrequency energy to the additional tissue.

In an embodiment, a cryoablation system includes a pre-cooler gas circuit, a working gas circuit isolated from the pre-cooler gas circuit, and a vacuum chamber isolated from the pre-cooler gas circuit and the working gas circuit. The cryoablation system can include a shaft having an insulated zone and a working gas expansion chamber distal to the insulated zone. The cryoablation system can further include a handle and a shaft-handle connector, wherein a proximal end of the shaft connects to the shaft-handle connector, wherein the shaft-handle connector is configured to removably attach the proximal end of the shaft to a distal end of the handle.

In an embodiment, a cryoablation shaft is included having a working fluid circuit; a vacuum circuit; an insulated portion, wherein the vacuum circuit runs through the insulated portion; and an expansion chamber; a supply tube having a distal outlet in the expansion chamber, wherein fluid from the working fluid circuit travels distally down the cryoablation shaft through supply tube and expands in the expansion chamber; and a guidewire lumen including a metallic tube and a polymer sleeve configured to surround at least a portion of the metallic tube.

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.

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 embodiment of the invention provides a handle and an ablation catheter, and belongs to the technical field of ablation. The handle is used for ablation of the catheter and comprises a shell and a first sealing gasket, the first sealing gasket is arranged in the shell and provided with a first through hole allowing the movable part to penetrate through and a second through hole allowing the silk thread to penetrate through, the movable part is in interference fit with the first through hole, and the silk thread is in interference fit with the second through hole. The handle can reduce the risk of errhysis.

Provided are a treatment system and a treatment method that improve the efficiency of endoscopic examination and treatment.　A treatment system (20) comprises a tubular member (31) which has a hollow part (31S) formed therein and which is provided with, at the leading end (31A) thereof, a treatment part (32) on the outer circumference of the hollow part (31S). Between a base-end surface (311) on the base end (31B) side and a leading-end surface (312) on the leading end (31A) side of the tubular member (31) in the axial direction, at least the base-end surface (311) has formed therein a base-end opening (3(1)1A) that is connected to the hollow part (31S).

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.

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.

Systems and methods for determining a treatment time for treatment zone of a target tissue are disclosed herein. In some embodiments, a system may include a cryoballoon, a mapping array, a catheter, and one or more hardware processors. The hardware processors may generate a pacing signal at the electrodes of the mapping array at the treatment zone and determine a minimum activation energy of a non-target tissue. The processors may activate the cryoballoon at a first time and detect an artifact in the electrical signals collected from the electrodes of the mapping array at a second time. Based on the minimum activation energy of the non-target tissue and the difference between the second time and the first time, the processors may determine an optimal treatment time for the treatment zone of the target tissue.

Disclosed embodiments relate to devices, systems, and methods of shaping, shrinking, opening, dilating, stiffening, or otherwise modifying a Eustachian tube and its surrounding tissue in order to improve the Eustachian tube's function. For example, patients with blocked, closed, or hypertrophic Eustachian tubes may be able to achieve improved function including easier equalization of pressure between the inner ear and environment.

A female insertion system is provided. The system includes a conformable insert shaped for insertion into one or more structures of a female human that are associated with at least one of reproduction and one or more erogenous zones; one or more sensors, at least one of the sensors included in the insert, and configured to measure and to relay data, wherein the data is acquired on one of a one-time basis and a multiple-time basis included one of a non-continuous period, a continuous period, and an intermittent temporal period; and a processor configured to: control the insert; generate a treatment for one of the structures of the female human; store the data; and based on the data, automatically affect one or more of the structures via the insert.

The invention provides a balloon biopsy catheter in a pulmonary artery, and belongs to the technical field of balloon biopsy catheters. Comprising a catheter body, a working channel opening is formed in the end of one side of the catheter body, an air bag ventilation connecting opening is formed in the end of the side, close to the working channel opening, of the catheter body, a freezing probe body is installed in the catheter body, and a needle core body is installed in the freezing probe body. By arranging the limiting storage mechanism, the catheter body can pass through a zigzag path of a pulmonary artery, and the inflatable air bag body and the air bag inner bag which are installed at the end of one side of the catheter body are inflated after reaching an occupying lesion position, so that the end part of the catheter body can be quickly fixed; therefore, the position of the end of the catheter body is kept stable in the operation process, the freezing probe body and the needle core body are used in cooperation with the balloon catheter, and biopsy sampling is conducted after the air bag body and the air bag inner bag are fixed.

Embodiments of the present invention provide devices and methods for treating at least one condition by delivering an effective amount of energy and / or a compound to tissue in or surrounding the wall of a body lumen. The compound may include at least one of a gas, vapor, liquid, solution, emulsion, suspension, or combinations thereof of one or more materials. The delivered amount of compound and / or energy may be effective to injure or damage tissue, nerves, and / or nerve endings so as to alleviate symptoms of the condition.

A medical device for forming a channel into a bone includes an introducer cannula having a hypotube disposed in a longitudinal direction, the distal hypotube having an introducer lumen disposed therethrough. The medical device also includes a curved cannula having an elongated tube, the elongated tube having a curved cannula lumen disposed therethrough, the elongated tube having a proximal straight tube portion and a distal curved tube portion, the elongated tube configured to be received into the introducer lumen of the introducer cannula; and a stylet having an elongated shaft, the elongated shaft having a proximal straight portion and a distal curved portion, the elongated shaft configured to be received into the curved cannula lumen. The distal curved portion of the stylet is relieved from a generally cylindrical shape of the stylet.

A vacuum tube is arranged between a sealing component and a tube body of an outer tube, and a second pressure sensor is integrated in the vacuum tube and used for detecting the gas pressure in the vacuum tube; the air inlet pipe extends into the balloon from the near end of the ablation mechanism, and an opening is formed in the outer surface of the air inlet pipe and used for releasing cold air to the balloon; a second temperature sensor is integrated on the surface of the air inlet pipe and used for detecting the temperature in the balloon, and the working temperature in the balloon is maintained by monitoring the temperature in the balloon in real time and adjusting the air inlet rate of cold air; a third pressure sensor is integrated at a port of the air return pipe and used for detecting the air pressure in the balloon, and the air inlet rate of cold air is adjusted according to the air pressure in the balloon monitored in real time so that the air pressure in the balloon can be kept within a safe range.

Elongate medical devices with an expandable structure including elongated splines and a distal hub. An elongate medical device includes a handle including a control mechanism, a catheter shaft, an expandable structure including elongated splines and a distal hub, wherein each of the elongated splines includes a shape memory material and an interactive element, wherein each of the elongated splines includes a respective spline proximal end and a spline distal end, wherein each of the spline proximal ends is connected to the catheter shaft distal end, and wherein each of the spline distal ends is connected to the distal hub, and a deflection control member connected to the distal hub, wherein the control mechanism is drivingly coupled to the distal hub via the deflection control member and operable to selectively vary a position of the distal hub relative to the catheter shaft distal end to selectively vary an amount of expansion of the expandable structure, wherein a shape of the expandable structure is produced via a combination of the shape memory material and the position of the distal hub relative to the catheter distal end.