646 results about "Catheter device" patented technology

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.

An exemplary shock wave catheter system comprises: a catheter body comprising a lumen; an emitter wire configured to generate shock waves, wherein one or more gaps are formed between two or more portions of the emitter wire along a length of the catheter body, each of the one or more gaps forming a locus emitter; a carrier wire configured to conduct electricity to the emitter wire; and one or more electrical joints configured to electrically couple and join the emitter wire and the carrier wire.

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

Disclosed are valve replacement devices, systems, and methods. valve replacement devices may comprise one- or two-piece systems comprising an adapter body and a valve assembly with leaflets positioned within the adapter body. In two-piece systems, the valve assembly may be removable from the adapter body such that both can be delivered together or separately, and the adapter body may remain implanted while the valve assembly may be removed and replaced (i.e., “revalved”). Also described are devices (such as a delivery catheter device), systems, and methods related to such delivering and revalving the valve replacement. Such delivery methods may include transseptal insertion of a new minimum leaflet structure, and securement of the valve replacement using several securement type (e.g., supra-annular, sub-annular, radial, leaflet securement, etc.). Also described is a braided helical design that mimics the heart's natural movement, and a flange structure for assisting the functioning of the valve replacement.

Systems, devices, and methods described herein relate to catheter devices for therapy delivery. In some embodiments, a catheter device includes a shaft and a needle, where the shaft defines a lumen configured to slidably receive the needle such that the needle can be advanced distally beyond the shaft to penetrate into a tissue site. The shaft further including a first electrode, and the needle including a second electrode, where the first and second electrodes are configured to deliver electroporation to the tissue site.

Systems, devices, and methods described herein relate to catheter devices for therapy delivery. In some embodiments, a catheter device includes an expandable electrode and a needle, where the needle can be advanced distal to a distal end of the expandable electrode and inserted into a tissue site. The expandable electrode and the distal end of the needle can be configured to deliver electroporation to the tissue site.

An aorta intervention catheter device for heart failure comprises a catheter and a bag body arranged at one end of the catheter, an elastic diaphragm is arranged in the bag body, an inner cavity of the bag body is divided into a blood chamber and an air chamber by the elastic diaphragm, the blood chamber is communicated with the catheter, an exhaust assembly is arranged on the bag body, and the air chamber is connected with an air source connector arranged on the bag body; the other end of the catheter is a proximal end, first guide films which are staggered at intervals and inclined towards one side of the proximal end and second guide films which are inclined towards a distal end are arranged on the inner wall of the catheter, and first guide holes and second guide holes which correspond to the first guide films and the second guide films and are communicated with an inner cavity of the catheter are respectively formed in the outer wall of the catheter; the proximal side of the second guide film is provided with at least one set of third guide films which are fixed to the inner wall of the catheter, incline towards the distal end and are tightly attached to each other to be closed. The aorta is directly intervened to enter the heart, and coronary artery blood perfusion is increased in the diastolic period; the left ventricular post-load is reduced in the systolic period, and the heart failure can be more directly treated.

A device for measuring intraurethral pressure comprises an elongate tube having at least first and second balloons on the elongate tube, one or more channels positioned within a lumen of the tube having at least first, second and third channels creating drain and balloon channels, and one or more sensors fluidly connected to the second balloon. In some embodiments, a fourth channel also extends to the second balloon. In some embodiments, the tube comprises a plurality of balloons positioned along its length. In some embodiments, the device can measure urethral pressure and / or bladder pressure. Also described is a method of measuring intraurethral pressure using the disclosed device.

A prosthesis assembly includes a stent frame that is expandable and configured for being positioned in the ascending aorta, and a receiving socket positioned within a proximal end of the prosthesis assembly. The receiving socket defines a recess for allowing flowthrough of blood into the stent frame. The receiving socket is further configured for selectively receiving a heart valve assembly for replacing a native heart of a patient or maintaining a mode of operation where the socket is empty and blood flows through the socket into the stent frame.

Systems, devices, and methods described herein relate to catheter devices for therapy delivery in renal denervation applications. In some embodiments, a catheter includes a shaft having first and second sets of electrodes. In some embodiments, each electrode set can include electrodes that are spaced from one another by inter-electrode spacings and being spaced from one another by an inter-set spacing. In some embodiments, the inter-set spacing can be at least 50% greater than each inter-electrode spacing. In some embodiments, the first or second set of electrodes can include at least one basket electrode.

The systems, devices, and methods described herein relate to catheter devices for therapeutic delivery in renal denervation applications. In some embodiments, the catheter includes a shaft having a first set of electrodes and a second set of electrodes, each of the first set of electrodes and the second set of electrodes including electrodes spaced apart from each other by an inter-electrode spacing and the first set of electrodes and the second set of electrodes spaced apart from each other by an inter-group spacing. In some embodiments, the inter-group spacing may be at least 50% greater than each inter-electrode spacing. In some embodiments, the first set of electrodes or the second set of electrodes may include at least one basket-shaped electrode.

Device (10; 110; 210) for conveying one or more fluids through an outlet line (44), comprising: a housing (20; 120; 220) with a chamber (22; 122; 222) for receiving and / or holding one or more pressurized fluids and an outer surface (24; 124), wherein the housing (20; 120; 220) has a first outlet opening (32; 132; 232), a first inlet opening (30; 230), a second outlet opening (34; 234) and a second inlet opening (36; 236), each opening extending from the chamber (22; 122; 222) to the outer surface (24; 124) to receive conveying means; a first outlet conveying means (42; 142; 242) for connection to an analytical device (65), wherein the first outlet line means (42; 142; 242) is received from the first outlet opening (32; 132; 232) and is in communication with the chamber (22; 122; 222) to guide fluids out of the chamber via the first outlet opening; a first inlet line means (40; 140;240) for connection with a first feed means (70; 170), wherein the first inlet line means (42; 140; 240) is received by the first inlet opening and communicates with the chamber (22; 122; 222) to supply a first fluid into the chamber (22; 122; 222); a second inlet line means (46; 146; 246) for connection with a second feed means (95; 195), wherein the second inlet line means (46; 146; 246) is received by the second inlet opening (36; 136; 236) and communicates with the chamber (22; 122; 222) to supply a second fluid into the chamber; a second outlet line means (44; 144; 244) for connection with a waste container, wherein the second outlet line means (44; 144; 244) is received from the second outlet opening (34; 234) and is in communication with the chamber (22; 122; 222) to guide fluids out of the chamber via the second outlet opening (34; 234);a fitting (241, 243, 245, 247) arranged between each opening (232, 230, 234, 236) and the associated conduit means (242, 240, 246, 244) and comprising a first valve means configured to form an intermediate fluid seal and to retain the conduit means in each opening at a chamber pressure between 15,000 and 120,000 psi; a first outlet conduit valve means (52; 152) arranged in the first outlet conduit means (42; 142; 242) configured to assume a closed position to prevent fluid flow and an open position to allow fluid flow, the valve means being configured to respond to a signal; a first supply means (70; 170) connected to the first inlet conduit means (40; 140;240) connected and configured to assume a supply state to supply the first fluid at a pressure up to a maximum of 120,000 psi and configured to assume a stop state in which the first fluid is not supplied; and a control means (80; 180) for controlling the first outlet line valve means (52; 152) and the first supply means (70; 170), wherein the control means (80; 180) is configured to send a signal (82; 182) to the first outlet line valve means (52; 152) to assume either the open or the closed position, and is configured to send a signal (72; 172) to the first supply means (70; 170) to assume either the supply state or the stop state.;

Disclosed are valve replacement devices, systems, and methods. valve replacement devices may comprise one- or two-piece systems comprising an adapter body and a valve assembly with leaflets positioned within the adapter body. In two-piece systems, the valve assembly may be removable from the adapter body such that both can be delivered together or separately, and the adapter body may remain implanted while the valve assembly may be removed and replaced (i.e., “revalved”). Also described are devices (such as a delivery catheter device), systems, and methods related to such delivering and revalving the valve replacement. Such delivery methods may include transseptal insertion of a new minimum leaflet structure, and securement of the valve replacement using several securement type (e.g., supra-annular, sub-annular, radial, leaflet securement, etc.). Also described is a braided helical design that mimics the heart's natural movement, and a flange structure for assisting the functioning of the valve replacement.

Transcatheter devices and delivery systems with various shape-memory improvements for facilitating procedures, including advancement within the body. The devices may include metallic stent features that are trained to assume certain shapes upon direct heating or cooling. Device can be trained with multiple shape memory configurations. For some devices, anchor arms extend from the device and are curled or curved at body temperature but can be straightened out when cooled. Similarly, a support structure of the devices can be trained to radially self-crimp when subjected to a reduced temperature. Various convertible elements within a delivery system can also be trained so as to enable selective disengagement. Cooling may be accomplished through the instruction of a cold saline solution, or through the use of miniature Peltier coolers mounted on the convertible elements themselves, or other means.

A prosthetic aortic valve that uses actuating arms and grippers to attach to leaflets, reducing device migration and sizing issues. It involves excising diseased leaflets prior to implantation, ensuring blood flow to coronary arteries, and offers optical visualization. The valve features replaceable leaflets and a streamlined frame. Innovative left atrial appendage devices, embolic protection devices, intra-cardiac echocardiography devices, and steerable catheter devices are introduced. Provided herein are atraumatic, cinchable mitral valve annular repair devices, noninvasive methods that modify body calcium with electromagnetic energy, and systems for optical visualization in vascular interventions by displacing blood with clear fluid.

A catheter device includes a tube member. The tube member comprises a distal portion and a proximal portion. Each of the distal portion and the proximal portion of the tube member comprises a plurality of cuts circumferentially extending around a longitudinal axis of the tube member. The plurality of cuts of the distal portion of the tube member comprises a first pitch, a first cut length, and a first uncut length, the plurality of cuts of the proximal portion of the tube member comprises a second pitch, a second cut length, and a second uncut length, and the first pitch is less than the second pitch, the first cut length is greater than the second length, and the first uncut length is less than the second uncut length.

Adjacent tissue layers can be accessed using a catheter device with a distal tip having a conductive portion including a first cutting feature and one or more projections extending from the first cutting feature towards an outer diameter of the distal tip. Electrical energy can be supplied to the conductive portion of the device to cut tissue. A stent can be delivered to form a fluid communication between the adjacent tissue layers.

The application belongs to the technical field of medical supplies, and discloses an OCT catheter loading system which comprises a catheter device and a driving device. The catheter device comprises a first plug-in assembly, a fixing sleeve and a fiber connector, the fiber connector is fixedly arranged in the fixing sleeve, the catheter is plugged into the fiber connector, and the fixing sleeve has an initial position and a rotating position relative to the first plug-in assembly; the driving device comprises a fixing seat, a second plug-in assembly, a fiber adapter and a driving assembly, the second plug-in assembly is arranged in the fixing seat, and the fiber adapter is arranged in the fixing seat through a fixing member. Before the fiber connector and the fiber adapter are plugged in, the fixing sleeve is located at the initial position relative to the first plug-in assembly; after the fiber connector and the fiber adapter are plugged in, the second plug-in assembly drives the first plug-in assembly to move to the rotating position relative to the fixing sleeve, and the driving assembly drives the fiber adapter to rotate, so that the plugging work of the fiber connector and the fiber adapter is manually completed.

A catheter set for forming a fistula between two adjacent blood vessels. The catheter set comprises two crossing catheters. Each crossing catheter comprising a catheter shaft defining a longitudinal axis and having a distal end section, a stabilizing element disposed in the distal end section of the catheter shaft, and a penetration tool for penetrating vessel walls of two adjacent blood vessels to form the fistula. The penetration tool is disposed within the catheter shaft and is movable between a retracted position and an advanced position. The stabilizing element comprises an expandable cage having a contracted configuration and a laterally expanded configuration. The expandable cage is suitable for snaring a guidewire when moving from the laterally expanded configuration to the contracted configuration.

Systems, devices, and methods described herein relate to catheter devices for therapy delivery. In some embodiments, a catheter device includes a shaft and a needle, where the shaft defines a lumen configured to slidably receive the needle such that the needle can be advanced distally beyond the shaft to penetrate into a tissue site. The shaft further including a first electrode, and the needle including a second electrode, where the first and second electrodes are configured to deliver electroporation to the tissue site.

Provided are methods and devices for facilitating the advancement of a catheter device, such as an intracardiac ultrasound examination catheter, through a body wall, such as the septum of the heart. The catheter device is advanced through a subject's vasculature to a first body cavity. The catheter device is coupled to a guidewire previously placed within the vasculature between the first and second cavities. The catheter device is then advanced from the first body cavity to the second body cavity through a body wall separating the first and second cavities. To facilitate this advancement, the catheter device can be magnetically coupled to the guidewire. The magnetic assembly can be provided on a distal portion of a sleeve through which the distal portion of the catheter is advanced. A malleable dilator element can also be provided on the distal portion of the sleeve.

Catheters, sheaths, or other tubular devices are provided, e.g., steerable tubular devices, including braided or other reinforcement configurations and / or including one or more steering elements for deflecting a distal portion, and / or to methods for making such catheters, sheaths, or other tubular devices. The devices and methods described herein may involve simplified, e.g., single-piece, construction of catheter shafts, which may save space and / or provide more robust construction of the resulting devices compared to conventional manufacturing methods.

The utility model provides a neurosurgery catheter device which comprises a fixing block, a catheter is movably installed on the fixing block, two elastic bandages are symmetrically and rotationally installed on the fixing block and matched with each other, adhesive tapes are arranged on the elastic bandages, a fixing mechanism is arranged on the fixing block, and the fixing mechanism is connected with the catheter. The fixing mechanism comprises a groove and two arc-shaped clamping blocks, the groove is formed in the top of the fixing block, and the two arc-shaped clamping blocks are symmetrically installed in the groove in a sliding mode and evenly make contact with the guide pipe. Through cooperation of the fixing block, the elastic bandage and the adhesive tape, the fixing block can be conveniently fixed to the body of a patient, so that subsequent fixation of the catheter is facilitated, through the arranged fixing mechanism, the catheter is fixed, operation is easy, fixation is firm, and normal treatment of the patient is guaranteed.

An ablation catheter device, including: an elongated flexible body having a long axis, a proximal end and a distal end; an expandable therapeutic portion coupled to the elongated flexible body and located between the proximal end and the distal end of the elongated flexible body, wherein the expandable therapeutic portion comprises at least one central flexible shaft configured to move between a collapsed state and an expanded state; and two or more elongated electrodes coupled to the expandable therapeutic portion, wherein the two or more elongated electrodes are twisted around the at least one central flexible shaft.

The present invention provides a diagnostic controllable catheter device suitable for use within a user's urethra and bladder, the device is suitable for diagnosing various bladder and urine conditions and for controlling the emptying of the bladder, a kit comprising the same, and a method of use.

Delivery catheter systems and methods for delivery of hypertension treatment implants are provided. Such catheter devices facilitate delivery and placement of an implant in a target region of an aortic arch of the patient to induce baroreflex. Typically, the catheter includes a catheter shaft, and outer sheath constraining an implant with one or more expandable structures in a collapsed configuration, the sheath being retractable to deploy the implant. The catheter can include markers for precise placement and deployment of the implant along the target region. The catheter can include a retention collar that releasably couples with one or more connectors at proximal ends of one or more tethers extending proximally from the implant to allow precise placement at the target region and / or repositioning or removal of the implant. The target region includes a cylindrical segment of aortic arch between the left common carotid artery and the left subclavian artery.

The invention relates to a catheter device (1) for retrieving a thrombus (T) from a vessel. The catheter device comprises a main body (15) with an internal channel (15') extending at least through a distal part of the main body (15). An attachment element (4) is attached or attachable to the main body (15) by a flexible line (2). The attachment element (4) further comprises a magnetic element (7) for steering and / or guiding by an exter-nal magnetic actuator and is adapted to attach to the thrombus (T) by means of a suction mechanism. The suction mechanism may include a suction hole (8) and / or a suction line (3). The suction mechanism may comprise a suction cup (6). The thrombus (T) is retrievable with the catheter device by exerting a pulling force on the attachment element (4) via the flexible line (2).

The drainage catheter device is composed of a soft drainage tube, a homogeneous transparent body and a visual module based on integration of a light source and a camera, the head end of the homogeneous transparent body is arc-shaped, the tail end of the homogeneous transparent body is flat and is matched with and connected with the diameter of the drainage tube, and the length of the transparent body is larger than or equal to the object distance of the visual module. One or more side holes are formed in the side face, close to the tail end of the transparent body, of the drainage tube, and the side holes are drainage holes of the drainage tube. According to the drainage catheter device, a one-cavity dual-purpose using method is adopted, the drainage catheter device can be used as a visual cavity and can also be used as a drainage cavity, it can be guaranteed that the diameter of the soft drainage catheter body is small, and trauma to brain tissue is smaller.

Systems, devices, and methods described herein relate to catheter devices for therapy delivery. In some embodiments, a catheter device includes an expandable electrode and a needle, where the needle can be advanced distal to a distal end of the expandable electrode and inserted into a tissue site. The expandable electrode and the distal end of the needle can be configured to deliver electroporation to the tissue site.

Transcatheter devices comprise an expandable stent frame configured to expand from a contracted orientation to an expanded orientation. The transcatheter devices further comprise a plurality of hooks coupled to the expandable stent frame. The plurality of hooks are configured to expand from a loaded state to a deployed state. Methods include deploying a plurality of hooks coupled to the expandable stent frame from a loaded state to a deployed state and expanding an expandable stent frame from a contracted orientation to an expanded orientation.