342 results about "Lithotripsy" patented technology

The present disclosure provides a catheter for treating lesions in a body lumen, such as calcified lesions and occlusions in vasculature. When a voltage is applied across the conductive elements, current flows across an arcing region, from one electrode element to another, to produce shock waves and cavitation bubbles. As a treatment continues, the conductive elements slowly erode at the arcing region where current flows between the electrodes. To increase the lifespan of the electrode assembly, the distal edges of the conductive elements may be shaped to promote erosion of the sheaths in a predetermined or semi-controlled pattern.

Catheter devices for treating occlusions in body lumen are described herein. The catheter devices may include a tubular body having a distal end, an distal portion elastically connected to the distal end of the tubular body, an impactor connected to the distal portion and separated by a space from the distal end of the tubular body, a distal shock wave emitter located adjacent to the space and connected to a power source, and an enclosure at least partially surrounding each of the distal end of the tubular body, the elastic distal portion, the impactor, and the distal shock wave emitter. The impactor may be configured to move in response to shock waves generated from the distal shock wave emitter, such that a length of the space in the proximal-distal direction increases by between 0.05 mm and 0.6 mm.

A method for manufacturing a catheter (102) including a rapid exchange port (157). The method can include the steps of generating a port (258) in a catheter shaft (210), inserting a guidewire lumen (118) into the port (258), pulling the guidewire lumen (118) in a proximal direction, and pushing the guidewire lumen (118) in a distal direction so that the guidewire lumen (118) is within the catheter shaft (210). The method can also include the steps of thermally bonding the guidewire lumen (118) within the catheter shaft (210), trimming the guidewire lumen (118) so that a guidewire lumen (118) proximal end is flush with a catheter shaft (210) exterior.

A catheter system (100) for treating a treatment site (106) within or adjacent to a vessel wall (108A) of a blood vessel (108), or within or adjacent to a heart valve, includes an energy source (124) and a system controller (126). The energy source (124) generates a plurality of energy pulses. The system controller (126) includes a processor that controls the energy source (124). The system controller (126) is configured to implement an energy control algorithm to control both of (i) a pulse frequency of the plurality of energy pulses, and (ii) an energy level for each of the plurality of energy pulses that are generated by the energy source (124). As the pulse frequency of the plurality of energy pulses increases, the energy level for each of the plurality of energy pulses decreases.

The present disclosure provides a crushed stone extraction system, comprising a delivery apparatus and a hydrogel. The hydrogel comprises a first composition and a second composition. The first composition comprises at least one crosslinkable polymer. The second composition comprises at least one crosslinking agent. The crosslinkable polymer is configured to be delivered to a lithotripsy position by the delivery apparatus and then encapsulate the crushed stones. The crosslinking agent is configured to be delivered to the lithotripsy position by the delivery apparatus and then react with the crosslinkable polymer to form an elastic hydrogel body encapsulating the crushed stones. The delivery apparatus is configured to adsorb the elastic hydrogel body and then remove the crushed stones. The present disclosure can remove multiple or even all of the fine crushed stones that cannot be taken out by conventional means at a time, thereby reducing the pain of patients.

A catheter system (200) for treating a treatment site (106) includes an energy source (124), an energy guide (222A) and an emitter (231). The energy guide (222A) receives energy (243) from the energy source (124). The emitter (231) includes (i) a guide distal end (222D) of the energy guide (222A), (ii) a plasma target (233) spaced apart from the guide distal end (222D), the energy guide (222A) emitting the energy (243) away from the guide distal end (222D) and toward the plasma target (233) so that plasma (134) is generated at the plasma target (233), and (iii) an emitter housing (260) secured to the energy guide (222A) and one of secured to and integrally formed with the plasma target (233) to maintain a relative position between the guide distal end (222D) and the plasma target (233). The emitter housing (260) includes a housing surface (260S), with a coating (260C) being provided on the housing surface (260S). The housing surface (260S) is formed from a first material, and the coating (260C) is formed from a second material that is different than the first material.

A catheter and segmented balloon system for an intravascular lithotripsy system having improved accommodation for curved configurations to prevent damage to the balloon during electrical arcing of electrode pairs. The catheter can include an elongate member with alternating flexibility regions wherein stiffer regions are configured to support at least one spaced-apart electrode pair, and wherein more flexible regions are disposed on either side of each stiffer region. This configuration allows the elongate member to curve more easily in the region of the electrodes, which are located within a balloon, or segmented balloon system. The balloon can include balloon segments with interposed sections between each of the segmented balloons wherein the outer diameter of an inflated balloon segment is larger than the outer diameter of the interposed section.

Various embodiments of the systems, methods, and devices are provided for controlled operation of an intravascular lithotripsy system for breaking up calcified lesions in an anatomical conduit. More specifically, control arrangements are disclosed concerning managing and / or providing and / or terminating provision of electrical energy to generate an electrical arc between a set of spaced-apart electrodes submerged within a contained fluid.

A catheter system (100) for treating a vascular lesion (106A) within or adjacent to a vessel wall (108A) of a blood vessel (108) within a body (107) of a patient (109) includes a catheter shaft (210); a handle assembly (228); and a source manifold (236). The handle assembly (228) is coupled to the catheter shaft (210). The handle assembly (228) includes an assembly housing (266). The handle assembly (228) is usable by a user to selectively position the catheter shaft (210) near the vascular lesion (106A). The source manifold (236) is coupled to the assembly housing (266). The source manifold (236) includes a manifold housing (282) having a catheter shaft port (264) that is configured to receive a portion of the catheter shaft (210) so that the catheter shaft (210) is coupled to the manifold housing (282).

The invention relates to the technical field of medical instruments, in particular to an electromagnetic focusing extracorporeal shock wave pancreatic lithotripsy device and method.The electromagnetic focusing extracorporeal shock wave pancreatic lithotripsy device comprises a device body, a bed body is installed on one side of the device body through a supporting frame, and a lithotripsy notch is formed in the side, close to the device body, of the bed body; a large C-shaped arm and a small C-shaped arm installed on the inner side of the large C-shaped arm are installed at the position of the notch of the device body, an X camera imager is installed at the upper end of the large C-shaped arm, and a shock wave generator and an ultrasonic probe installed on one side of the shock wave generator are installed on the small C-shaped arm. An energy adjusting module used for controlling the shock wave generator and a safety detection module used for detecting the skin temperature are arranged in the device body, and a displayer and a human-computer interaction interface are arranged on one side of the device body. The technical scheme in the prior art has limitations on shock wave generation, positioning precision, energy regulation and control and treatment strategies.

Laser IVL systems and methods are disclosed. A laser IVL system can include at least one light energy source and a catheter. The catheter can include an elongate sheath, an enclosure sealed to a distal end of the elongate sheath, and at least one optical fiber contained within the elongate sheath. The enclosure may have a fill volume less than 10 mL and may be fillable with a fluid. The at least one optical fiber can be optically coupled to receive light from the at least one light energy source and configured to transmit the received light at a light emitting region of the at least one optical fiber into a distal region of the catheter that is enclosed by the enclosure to generate shock waves in the fluid.

A medical device may include an elongated body having a distal elongated body portion and a central longitudinal axis. The medical device may include a balloon positioned along the distal elongated body portion. The balloon may be configured to receive a fluid to inflate the balloon such that an exterior balloon surface contacts a calcified lesion within a patient's vasculature. The medical device may include one or more pressure wave emitters positioned along the central longitudinal axis of the elongated body. The one or more pressure wave emitters may be configured to propagate at least one pressure wave through the fluid to fragment the calcified lesion. At least one pressure wave emitter may include an optical fiber configured to transmit laser energy into the balloon. The laser energy may be configured to create a cavitation bubble in the fluid.

A lithotripsy device for tunneling through vascular occlusions comprises a tunneling catheter including a tunneling catheter shaft having a distal end and a proximal end. A tunneling probe is disposed on the distal end of the tunneling catheter shaft. The tunneling probe has a pair of electrodes; each electrode being operatively connected to an electrical lead within the tunneling catheter shaft. The leads are configured for operative connection to an external pulse generator. Activation of an external pulse generator operatively connected to the leads causes repeated electrical discharges between the electrodes. When the electrodes are an in a fluid, the repeated electrical discharges produce repeated hydraulic shock waves in the fluid directed away from the electrical discharges. When the repeated hydraulic shock waves strike calcified tissue, the calcified tissue is broken into a modified plaque. The modified plaque has a lower resistance to mechanical dislocation that the original calcified tissue.

A lithotripsy device can include a lithotripter configured to deliver lithotripsy energy to tissue located at least partially within a body channel. The lithotripsy device can include a working passage positionable at least partially within the body channel, the working passage at least partially defining a suction opening. The lithotripsy device can include a suction device connectable to the working passage upstream of the suction opening and configured to generate a suction flow to motivate movement of the tissue or portions thereof toward the suction opening. The lithotripsy device can include a controller in communication with the lithotripter and with the suction device, where the controller can be configured to operate the suction device to generate the suction flow at a suction energy configured to offset the lithotripsy energy to reduce or eliminate retropulsion of the tissue when the lithotripsy energy is delivered to the tissue.

A lithotripsy device breaks up calculi and includes: a carrier unit; a guide tube; an acceleration tube having an axial direction, a cavity, a proximal end, a distal end; a movable projectile; a proximal stop element and a distal stop element for the movable projectile. The acceleration tube includes a proximal distal opening for the inflow and / or outflow of a pressure medium into and / or out of the cavity to move the projectile back and forth between the proximal and distal stop elements, the acceleration tube being positioned so as to be movable in the axial direction internally at a proximal end portion by the proximal stop element and at a distal end portion by the distal stop element so that the acceleration tube can be displaced in a distal direction and in a proximal direction relative to the guide tube. A method accelerates a projectile of a lithotripsy device.

Provided is a ureteral lithotripsy catheter, comprising a sheath (1). One end of the sheath (1) is fixedly connected to a vortex cavity (3), and the other end of the sheath (1) is connected to a bending section (9). The sheath (1) is provided with a pressure detection hole (8) and a pressure detection channel (10). The pressure detection hole (8) is in communication with the pressure detection channel (10). The other end of the pressure detection channel (10) is connected to a detachable pressure sensor. By means of arranging the detachable pressure sensor, the sensor body can be detached when not in use, facilitating storage. During use, the connection between the sensor body and the sensor chip is convenient, rapid, and reliable. The pressure sensor can monitor accurate and reliable data by means of the pressure detection channel, avoid high pressure in the minimally invasive cavity, and significantly improve the safety rate of surgery and the calculus removal efficiency.

Some embodiments of a rotational atherectomy and lithotripsy system can partially or completely remove a stenotic lesion in blood vessels by rotating one or more abrasive elements to abrade and breakdown the lesion, by emitting acoustic energy to fracture and breakdown the lesion, or a combination of both.

The invention disclosed in this document presents a novel direct in-scope suction system designed for the retrieval of calculus fragments within the body. This system comprises two key components: a calculus fragments retrieval device and a pump unit. The calculus fragments retrieval device features a body with a single working channel that includes both an irrigation port and a suction port, which are connected to respective irrigation and suction pumps via elastomer-based rubber tubes. This setup allows for the controlled infusion of saline solution into the body lumens during lithotripsy procedures, ensuring clear visibility and fragment clearance. The retrieval device includes a trigger lever connected to a pincher tab. When the operator presses the trigger lever, the suction port is opened by releasing the pinched suction tube, increasing pressure inside the body.

The invention discloses a prediction method for kidney stone prognosis based on CT imaging omics, and relates to the field of medicine. Comprising the following steps that CT images and clinical data are collected, retrieval is conducted through a hospital medical record system, clinical information is collected, and the CT images are scanned through a scanner; cT image processing and feature extraction are carried out, calculus areas are sketched layer by layer on all cross sections of the CT image, information is recorded, and then feature extraction is carried out; and image omics feature screening and model construction: extracting image omics features from each original CT image. According to the method, CT image features and clinical prediction factors are combined, a clinical-image omics model is developed and verified, a repeatable, non-invasive, non-invasive and safe preoperative prediction method is provided, the calculus removal success rate of a kidney stone patient after flexible ureteroscope lithotripsy can be accurately evaluated, and the calculus removal success rate of the kidney stone patient after flexible ureteroscope lithotripsy is improved. And a clinician can be assisted to make a clinical decision and implement precise medical treatment.

The present disclosure provides systems and methods for Al model(s) that are trained to identify characteristics associated with lesions within a blood vessel and provide a suggested procedure associated with the lesion. The Al model may receive, as input, intravascular and / or extraluminal image data associated with the blood vessel and provide, as output, characteristics, e.g., characterizations, associated with the blood vessel. The characterizations may include, for example, form or tissue nature (e.g., microcalcification, punctate, fragment, sheet, nodular, or otherwise), location within the vessel (e.g., intimal, superficial, medial, deep, etc.), size (e.g., length, depth, thickness, etc.), severity, and / or the like. The characterizations may be used as input to the same and / or a different model for providing a suggested procedure associated with the lesion. The suggested procedure may include, for example, orbital atherectomy, intravascular lithotripsy, rotational atherectomy, cutting and / or scoring balloons, and / or the like.

The invention relates to a stone fragment capturing device, a stone crushing device and a stone crushing method. A stone fragment capture device for a lithotripsy system includes a container for retaining stone fragments, an inlet port in the container coupled to a suction channel of a lithotripsy device, an outlet port fluidly coupled to a collection canister of the lithotripsy system, a transparent portion of the container through which the stone fragment is viewed; and a marker on the container for determining a property of the stone fragment. A method of retrieving stone fragments from a lithotripsy procedure includes crushing a stone with a lithotripsy device, evacuating through the lithotripsy device to draw stone fragments and waste liquid through the lithotripsy device, evacuating through a stone fragment capture device coupled to the lithotripsy device, separating the stone fragments from the waste liquid within the stone fragment capture device, and recovering the stone fragments from the waste liquid within the lithotripsy device. Attributes of the stone fragments in the stone fragment capturing device are determined, and the lithotripsy operation is completed.

A catheter system (100) usable for treating a treatment site (106) within or adjacent to a vessel wall (108A) of a blood vessel (108) or a heart valve within a body (107) of a patient (109), the catheter system (100) can include an energy source (124) that generates energy, a catheter (102) that includes an energy guide (122A) that receives the energy from the energy source (124), and a system controller (126) that is coupled to the energy source (124), the system controller (126) being configured to: (i) monitor real-time operating parameters of the catheter system (100), including at least energy delivery characteristics and treatment site conditions, (ii) detect and identify operating parameters that require adjustment, (iii) automatically adjust operating parameters, and (iv) dynamically provide a summary of system status, treatment progress, and actionable alerts.

The invention relates to the technical field of medical apparatus and instruments, and discloses an ultra-pulse thulium fiber laser therapy apparatus, which comprises a laser, a coupler, a lithotripsy energy transmission optical fiber, a thulium fiber laser head, an electrical device, a mainboard, an air cooling device and an equipment case, the laser is of an all-fiber structure and outputs 1940-nanometer near-infrared laser, the 1940-nanometer near-infrared laser is transmitted to the thulium fiber laser head through the thulium-doped double-clad fiber, and a collimating lens set is arranged at the light emitting end of the laser head and used for shaping the laser into collimated light beams. An aspheric focusing lens and an optical fiber clamping mechanism are arranged in the coupler, and the coupler is used for focusing the collimated light beam into the lithotripsy energy transmission optical fiber; the lithotripsy energy transmission optical fiber is a multimode quartz optical fiber, the end face is polished and plated with an anti-reflection film, one end is connected with the coupler through an FC / APC interface, and the other end is connected with an external replaceable treatment handle; and the electrical device is electrically connected with the mainboard. According to the invention, efficient and intelligent heat dissipation management is realized, and the energy transmission efficiency and the output stability are improved.

The invention provides a gall-stone removing and crushing device under a laparoscope, and belongs to the technical field of gall-stone treatment. Comprising a catheter, the top of the catheter is fixedly connected with a first camera, the catheter is internally provided with a bag sealing assembly which is used for forming a controllable closed cavity in a gall bladder and wrapping a target calculus, and the bag sealing assembly comprises a first guide tube slidably connected to the interior of the catheter. The bag sealing assembly, the calculus removing assembly and the calculus crushing assembly are arranged and are matched with one another for use, and the integrated process of wrapping, grabbing, crushing and collecting is formed through the integrated design of a nested guide pipe, the bag sealing assembly constructs a closed cavity to isolate an operation area, and the calculus removing assembly accurately grabs calculus and fixes the calculus in a bag; the stone crushing assembly efficiently crushes target stones in a closed environment, internal and external double-view-angle monitoring is achieved through double cameras in the whole process, and the risk of gallbladder injury caused by the fact that an incision is exposed to the outside in a traditional operation is avoided through cooperation of the three assemblies.

The invention relates to the technical field of medical image processing, and discloses a PCNL fusion image puncture and lithotripsy navigation method and equipment based on optical positioning. The method comprises the following steps: acquiring a real-time ultrasonic image of a target object, and fusing the real-time ultrasonic image with a pre-acquired three-dimensional CT image of the target object to obtain a fused image; establishing a simulated skin-kidney channel according to the fused image; wherein the simulated skin-kidney channel is used for assisting in constructing a lithotripsy path for a target object; acquiring pose information of a navigation marker of the endoscope relative to the target object in real time, and displaying the pose information in the three-dimensional CT image in real time to obtain a target three-dimensional CT image displaying the pose information of the navigation marker of the endoscope in real time; wherein the target three-dimensional CT image is used for assisting in navigating the lithotripsy position of the target object.

A lithotripsy or other medical laser treatment system can include a lateral actuator to laterally displace a distal portion of a laser fiber, such as can be scanned or otherwise controlled to generate a spatial or spatiotemporal sub-targeting pattern without requiring laterally moving an endoscope carrying the laser fiber in a longitudinal passage such as a working channel. A targeted stone can be selectively weakened along the pattern, such as using lower energy pulses, before being fragmented, such as by a higher energy shock pulse.

Provided herein are methods and systems for treating a target area of a body lumen using an intravascular lithotripsy catheter, the method comprising: receiving, at a computing system, patient-specific information for a patient that has the at least partially occluded body lumen; determining, by the computing system, at least one parameter of a treatment of the at least partially occluded body lumen with the intravascular lithotripsy catheter, wherein the at least one parameter is determined by processing the patient-specific information with at least one machine learning model; and displaying, by the computing system, guidance for treating the at least partially occluded body lumen with the intravascular lithotripsy catheter based on the at least one parameter, wherein treating the at least partially occluded body lumen with the intravascular lithotripsy catheter comprises the intravascular lithotripsy catheter generating at least one shock wave.

Various embodiments of the systems, methods, and devices are provided for controlled operation of an intravascular lithotripsy system for breaking up calcified lesions in an anatomical conduit. More specifically, control arrangements are disclosed concerning managing and / or providing electrical energy to generate an electrical arc between a set of spaced-apart electrodes disposed within fluid-fillable member are disclosed.

A shock wave catheter for performing endovascular lithotripsy (IVL) is provided. The catheter includes an elongation tube having a central longitudinal axis, an inclusion sealed at the distal end of the elongation tube, and an adjustable emitter assembly disposed within the inclusion. The emitter assembly includes, in a first configuration, a shock wave generating emitter that is closer to the central longitudinal axis of the catheter, and in a second configuration, a shock wave generating emitter that is further from the central longitudinal axis than in the first position and is at least one laterally movable or positionable. Various embodiments include support structures for the emitter, multiple balloons for positioning the emitter, spiral ribbons, angled emitter ports, and other exemplary features for moving and / or positioning the emitter. Systems and methods for treating lesions in body luminals are also provided herein.

The invention provides a special rotatable stone breaking and removing mesh basket under a biliopancreatic duct endoscop.The rotatable stone breaking and removing mesh basket comprises a tube shell, a drill bit cap, a mesh basket body, a drill bit, a traction part and a push-pull handle, one end of the tube shell is in driving connection with external driving equipment, the push-pull handle is slidably connected to the tube shell, the traction part is located in the tube shell, and the drill bit cap is connected with the mesh basket body. The two ends of the traction part are fixedly connected with the push-pull handle and the net basket respectively; the mesh basket penetrates through the drill bit and is fixedly connected with the drill bit cap; the push-pull handle can pull the traction part, the mesh basket and the drill bit cap to move back and forth when moving back and forth along the tube cavity of the tube shell under the action of external force, so that the mesh basket has an open state and a closed state, the mesh basket can sleeve stones in the open state, and the mesh basket can tighten the stones to the drill bit in the closed state. When the handle is pulled backwards, the drill bit pierces into the stone, external driving equipment drives the drill bit to rotate to break the stone, and the stone breaking and removing efficiency and accuracy are effectively improved.