410 results about "Lithotripsy" patented technology

A catheter for treating a stenosis in a body lumen includes an elongate tube; a member sealed to a distal end of the elongate tube that is fillable with a conductive fluid; a metallization layer comprising at least one trace forming at least one inner electrode, the metallization layer being connected to at least one wire; and at least one outer electrode extending radially outwardly of the metallization layer and separated from the at least one inner electrode by at least one gap such that, when a voltage pulse is applied to the inner and outer electrodes, current flows across the at least one gap to generate at least one shock wave.

A catheter system (100) for treating a treatment site (106) within or adjacent to a vessel wall (108A) of a blood vessel (108) includes an energy source (124), an energy guide (122A), and a guidewire lumen (118). The energy source (124) generates energy. The energy guide (122A) is configured to selectively receive the energy from the energy source (124). The energy guide (122A) includes a guide distal end (122D). The energy that is received by the energy guide (122A) is emitted from the guide distal end (122D). The guidewire lumen (118) having an outer surface (218S). At least the guide distal end (122D) of the energy guide (122A) is positioned adjacent to the outer surface (218S) of the guidewire lumen (118) A portion of the guidewire lumen (118) encompasses a plasma generator (133) that is positioned near the guide distal end (122D) of the energy guide (122A). The plasma generator (133) is positionable near the treatment site (106). The plasma generator (133) is formed from a polymeric material.

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.

The invention discloses an insertion part, an endoscope and a control system, and relates to the field of medical instruments.The insertion part comprises a camera module, an instrument tube and a marking structure, the camera module is arranged at the far end of the insertion part, the instrument tube is provided with an instrument channel, the instrument channel penetrates through the two opposite ends of the insertion part, and the instrument channel is used for circulating a medium; the marking structure is adjacent to the camera module, and the marking structure is used for marking the flow path of the medium in the field of view of the camera module. The instrument tube is used for injecting a medium, the sheath tube provides a suction environment, the marking structure can present a flowing path of the medium on the camera module, a medical worker can observe the flowing path of the medium through the camera module, and the marking structure visualizes the flowing path of the medium. Furthermore, medical staff can clearly observe the distance between the flowing path and the calculus, the sheathing canal and the endoscope can be rapidly adjusted according to the relative position relation of the flowing path and the calculus, the use efficiency of the endoscope is improved, and the lithotripsy operation time is shortened.

Disclosed herein are systems, devices and methods for treating diseased vessels by using pulsatile intravascular lithotripsy. In particular, amplifier assemblies are provided; handle assemblies for controllably transmitting potential energy are also provided; systems for imparting pulsatile energy are provided, where such systems include an amplifier assembly and a handle assembly; and methods for imparting pulsatile energy to tissue are provided.

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.

Systems configured for performing atherectomy and pulsatile intravascular lithotripsy are provided. Aspects of the systems include a console; and a handle, wherein the handle is configured to be interchangeably operably connectable to: an atherectomy subsystem, and a pulsatile intravascular lithotripsy subsystem. Also provided are components of the systems that include the same. The systems and assemblies find use in a variety of different applications, including combined atherectomy and pulsatile intravascular lithotripsy procedures as well as balloon angioplasty applications.

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 a flexible ureteroscope used in cooperation with a diameter-variable ureteroscope sheath, which comprises a ureteroscope sheath body and a flexible ureteroscope body, the ureteroscope sheath body comprises a deformation section and a support section, the deformation section has a first form and a second form, and the flexible ureteroscope body comprises a handle section and a ureteroscope tube section. The endoscope tube section comprises a first tube body part and a second tube body part, a fixing groove is formed in the first tube body part, and the outer diameter of the deformation section in the first form is smaller than or equal to the outer diameter of the first tube body part; the inner diameter of the deformation section in the second form is greater than the outer diameter of the first pipe body part; a first liquid injection channel is further arranged in the endoscope tube section, and a first liquid outlet hole is formed in the fixing groove. Compared with the prior art, in the operation of expanding the human body ureterostenosis section by the deformation section, a stenosis ring in the human body ureterostenosis section does not need to be broken by supporting, so that the injury to the human body ureter in the ureteroscope lithotripsy is effectively reduced, and the postoperative pain of a patient is reduced.

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 catheter system (100) includes an energy source (124), a catheter shaft (110), a balloon (104), a plurality of energy directors (122A), a plurality of emitters (135), and a system controller (126). An energy source (124) generates energy. The balloon (104) is coupled to the catheter shaft (110). The balloon (104) includes a balloon wall (130) that defines a balloon interior (146) that holds catheter fluid (132). The energy director (122A) selectively receives energy from the energy source (124). A transmitter (135) is positioned within the balloon interior (146). Each emitter (135) includes a director distal end (122D) of one of the energy directors (122A) and a corresponding plasma generator (133) spaced apart from the director distal end (122D). The energy received by each energy director (122A) is emitted from the director distal end (122D) and impinges on a corresponding plasma generator (133) such that a plasma is generated in the catheter fluid (132) within the balloon interior (146). The system controller (126) controls the energy source (124) such that energy from the energy source (124) is alternately directed to each energy director (122A) in a first excitation mode and a second excitation mode different from the first excitation mode.

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.

The catheter is configured to substantially simultaneously cut or scribe a lesion and deliver pressure waves to the lesion. An illustrative catheter may include a catheter shaft, an expandable member secured to a distal portion of the catheter shaft, a cutting member secured to the expandable member, and an ultrasound transducer disposed within the expandable member. A tether may be attached between the expandable member and the emitter, the tether self-orienting the emitter toward the target tissue due to non-uniform expansion of the expandable member caused by different compliance between the target tissue and surrounding 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.

A removable cap for an endoscope used with a surgical laser to improve the stone free rate (SFR) of lithotripsy procedures. The removable cap includes a filter configured to block or filter light of a wavelength like a wavelength of light from an aiming beam generated by the surgical laser.

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

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.

The invention relates to the technical field of calculus surgical instruments, in particular to a lithotripsy suction device after urinary surgery calculus surgery, which mainly comprises a fixed cylinder, an outer sheath tube fixedly mounted on the side surface of the fixed cylinder in a penetrating manner, an inner sheath hose and an inner sheath hard tube slidably mounted on the inner wall of the outer sheath tube, a suction mechanism arranged on one side of the outer sheath tube, and a pushing mechanism arranged on the other side of the outer sheath tube, and the propelling mechanism is arranged in the fixed cylinder. One end of the inner sheath hose is moved to the position close to stone chippings, the pressing plate is manually pulled, the pressing plate drives the connecting frame and the T-shaped block to rotate, the T-shaped block rotates to move on the inner wall of the T-shaped groove, and therefore the fixing sleeve, the inner sheath hard tube and the inner sheath hose are driven to move, and the inner sheath hose can stably move to the position of the stone chippings; the movable plate and the clamping teeth are pushed to be clamped with the clamping grooves through the second elastic piece, so that the positions of the pressing plate and the inner sheath hose are fixed, the moving deviation of the inner sheath hose is reduced, the stone scrap suction effect of the inner sheath hose is guaranteed, and it is guaranteed that organs of a patient are not prone to being damaged.

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.

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.

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.