49 results about "Catheter valves" patented technology

Devices and methods are described for urinary catheters and catheter valves. For example, this disclosure relates to urinary catheters having valves that facilitate testing of a user's ability to urinate.

A method of preventing paravalvular leakage includes concurrent delivery of a heart valve prosthesis and an annular sealing component. During delivery, the sealing component is moved from a first position to a second position of the heart valve prosthesis which is longitudinally spaced apart from the first position of the heart valve prosthesis. The sealing component is secured around the heart valve prosthesis at the second position by a contoured outer surface of the heart valve prosthesis. The sealing component may be a flexible ring or may be a cylindrical flexible sleeve having a plurality of ribs longitudinally extending over the cylindrical sleeve. The ribs operate to deploy the sealing component such that at least a portion of the cylindrical sleeve buckles outwardly away from the outer surface of the heart valve prosthesis.

A delivery device is described for use in a TAVR procedure for replacement of a diseased cardiac valve with a prosthetic valve using a minimally invasive procedure. The invention includes structural features of a prosthetic valve that are mated to corresponding structural features on a catheter-based delivery system. Individual structures and operations of the delivery system are specially designed for the TAVR procedure and operate to improve the delivery and placement of the prosthetic valve at the native annulus such that the surgeon can orient and release the prosthetic valve in a controlled manner to improve the placement and deployment of the prosthetic valve.

This application generally relates to an transcatheter anti-reflux venous valve endoprosthesis system, including a replacement valve, a valve support frame, crimping system, and delivery system to treat patients with chronic venous insufficiency, and method for using such a system.

A transapical removal device that can be deployed in a catheter procedure to capture for removal or alteration a mitral valve clip or heart tissue, such as the anterior leaflet of the mitral valve, and methods of use are disclosed. The removal device includes a delivery catheter configured to be deployed near a mitral valve using a guide catheter. The delivery catheter has a snare head at the distal end, which assumes a collapsed state during movement of the delivery catheter through the guide catheter and deployed state for capturing a mitral valve clip or anterior leaflet. The snare head has one or more ablation delivery catheters configured to ablate tissue surrounding the pre-positioned mitral valve clip or anterior leaflet. In some arrangements within the scope of the present disclosure, the removal device includes a deployment mechanism for deploying a new transcatheter valve into the mitral valve.

This application generally relates to an transcatheter anti-reflux venous valve endoprosthesis system, including a replacement valve, a valve support frame, crimping system, and delivery system to treat patients with chronic venous insufficiency, and method for using such a system.

An aspiration thrombectomy system includes a thrombectomy catheter assembly that maintains pulsatile energy of cyclic aspiration while the catheter is occluded. A system configuration includes a catheter, vacuum and vent fluid sources respectively connected to vacuum and vent valves, a vent catheter valve connecting a catheter lumen to the vent fluid source, a manifold connected to the catheter and vacuum and vent valves, a pressure sensor upstream of the vacuum valve, and a controller configured to operate the vacuum, vent, and vent catheter valves, receive sensor pressure data, control the vent catheter valve dependent upon the data. An operable lumen of the system includes a volume of the catheter lumen and an interior of the manifold up to an input of the vacuum valve input and an output of the vent valve.

The present disclosure discusses a urinary catheter attachment that is equipped with a sensor and microcontroller that monitors bladder parameters, such as pressure or volume, and determines when the bladder is full and should be voided. In various embodiment, the disclosed system allows individuals who cannot know, feel, or remember when their bladder should be voided to use catheter accessories such as catheter valves. According to various embodiments, the system computes bladder fullness through an algorithm and triggers the alert system when a bladder fullness threshold is passed. In various embodiments, the alert system includes, but is not limited to, notifications via smartphone or smart devices, wearable technology, and patient management systems. The alert system may be substituted with an electronically actuated catheter valve.

This invention discloses a valve repair system, including a valve repair device and a delivery device. The valve repair device includes at least one pair of clamping portions and at least one pair of elastic clamping portions. In its natural state, the pair of clamping portions are far apart from each other and respectively abut against the clamping portions opposite to them. The delivery device includes at least a pushing component, which includes a pushing catheter. The valve repair device is detachably connected to the distal end of the pushing catheter. The pushing catheter has multiple channels extending through its proximal and distal ends, and at least two opposing channels are included among the multiple channels, which are axially opposite to the two clamping portions. The valve repair system also includes at least two adjusting wires for controlling the angle at which the pair of clamping portions approach each other. Each adjusting wire is movably connected to the clamping portion and then folded in half to form two strands. The proximal ends of both strands can be movably inserted into the channels and connected to the proximal end of the pushing component. The two strands of each adjusting wire do not simultaneously insert into an opposing channel on the opposite side.

This invention provides a transcatheter valve prosthesis comprising a stent, a prosthetic valve component, and a paravalvular leakage prevention component. The paravalvular leakage prevention component is coupled to the stent and includes an inner skirt, an outer covering, a lumen, an opening, and a one-way valve. The inner skirt is disposed on an inner surface of the stent and has an inflow end and a downstream end. The outer covering surrounds an outer surface of the stent and has an inflow end and a downstream end, the inflow end being coupled to the inflow end of the inner skirt. The lumen is formed between the outer surface of the inner skirt and the inner surface of the outer covering. The opening is disposed between the inner skirt and the outer covering. The one-way valve includes a flap at the opening, the flap being configured to open to allow blood to flow into the lumen but prevent blood from flowing out of the lumen.

A transcatheter valve prosthesis includes an expandable tubular stent, a prosthetic valve within the stent, and an anti-paravalvular leakage component coupled to and encircling the tubular stent. The anti-paravalvular leakage component includes a radially-compressible annular scaffold, which is a sinusoidal patterned ring of self-expanding material, and an impermeable membrane extending over the annular scaffold. The anti-paravalvular leakage component has an expanded configuration in which at least segments of the annular scaffold curve radially away from the tubular stent. Alternatively, the anti-paravalvular leakage component includes a plurality of self-expanding segments and an annular sealing element coupled to inner surfaces of the segments. The anti-paravalvular leakage component has an expanded configuration in which the segments curve radially away from the tubular stent and the annular sealing element is positioned between an outer surface of the tubular stent and inner surfaces of the segments.

In various embodiments, provided herein are methods, devices and systems to optimize delivery of ring-shaped articles for receiving transcatheter valves or stents. These methods, devices and systems are used to treat patients with valvular diseases. In some embodiments, the device includes at least three cables configured to hold a ring-shaped article having a center hole. The at least three cables are further configured to be anchored to supra-annular tissue at a heart valve peri-annular region. The ring-shaped article is positioned and deployed by means of at least three cables used to embed screws or anchors attached to the ring-shaped article into the supra-annular tissue; this deployed ring-shaped article is configured to receive a replacement heart valve in its inner lumen, thereby acting as a landing zone.

The utility model relates to the technical field of water injection testing machines, and discloses a water injection testing machine which comprises a complete machine base, an injector clamping groove support is fixedly connected to one side of the upper portion of the complete machine base, a guide pipe valve clamping groove support is installed on one side of the injector clamping groove support, the guide pipe valve clamping groove support is fixedly connected to the upper portion of the complete machine base, and the injector clamping groove support is fixedly connected to the other side of the complete machine base. Clamping assemblies are fixedly connected to one side of the upper portion of the injector clamping groove support and one side of the upper portion of the catheter valve clamping groove support, the clamping assemblies are used for ensuring the stability when an injector is fixed, a servo electric cylinder is fixedly connected to one side of the upper portion of the whole machine base, and a push block is fixedly connected to the output end of the servo electric cylinder; the push block is slidably connected to the upper side of the interior of the complete machine base, and a protective shell is fixedly connected to one side of the upper portion of the complete machine base. According to the automatic injection device, the injection action can be automatically completed, manual injection is not needed any more, manpower is saved, and the working efficiency is improved.

The invention discloses a pre-shaping balloon guide wire for transcatheter valve intervention, and relates to the technical field of medical instruments. The pre-shaped balloon guide wire for transcatheter valve intervention comprises a guide wire body and a balloon, a filling channel is formed in the guide wire body, the far end of the guide wire body is provided with a curled section with self-recovery capacity, and the filling channel is suitable for introducing fluid; and the balloon is arranged on at least part of the curled section and is communicated with the filling channel through the side hole. The structure of the pre-plasticized hard guide wire is improved, damage of the guide wire to cardiac muscle is reduced, and operation safety is improved. The far-end ventricle / atrium part of the balloon guide wire adopts the balloon structure, so that the contact area of the guide wire body and the cardiac muscle is increased, the local cardiac muscle stress is effectively reduced, and the cardiac muscle injury and perforation risk are reduced. The detachable one-way valve is arranged at the near end of the pre-shaping balloon guide wire and can be used for fixing the relative position of the guide wire, and the system stability is enhanced.

A catheter valve for controlling the fluid flow of a medium, in particular a self-closing catheter valve, wherein a main body includes: —an inlet and an outlet-, —a flexible tube, —as a cover, a slider which is movable in the longitudinal direction, and —at the inlet of the catheter valve, a stepped barbed part for connecting a supply line; and, in the interior of the main body that comprises two laterally opposite vertical chambers, the catheter valve has two contradirectional downward inclines on the longitudinally movable slider for actuating and guiding two vertically movable magnets, which are arranged on two opposite sides of the valve house and selectively close or open the passage of said valve hose, wherein an adapter can be inserted and fastened at the outlet of the catheter valve and (in addition to the longitudinally movable slider) results in a permanent open position of the catheter valve.

Provided herein is a transcatheter aortic or pulmonary valve implant assembly that includes a bioresorbable docking station. The transcatheter valve implant assembly further includes a bioresorbable stent frame structure and a prosthetic valve that is connected with the docking station. This transcatheter valve implant assembly can be implanted adjacent to the aortic valve or pulmonary valve. In some embodiments, the transcatheter valve implant assembly includes a ventricular assist device that is releasably connectable with the bioresorbable docking station and the bioresorbable stent frame structure.

A transcatheter valve prosthesis includes a stent and a prosthetic valve. The prosthetic valve is configured to substantially block blood flow in one direction to regulate blood flow through a central lumen of the stent. The stent includes an inflow portion, an outflow portion, and a transition portion extending between the inflow portion and the outflow portion. The transition portion includes a plurality of axial frame members extending between the inflow portion and the outflow portion. Each axial frame member extends in an axial direction from a crown of the inflow portion to at least a crown of the outflow portion. Each axial frame member has a first end adjacent to the crown of the inflow portion, the first end having a reduced width relative to a width of a length of the axial frame member between the first end and the crown of the outflow portion.

The present invention relates to a catheter valve for controlling the fluid flow of a medium, in particular to a self-closing catheter valve, which has a base having an inlet section, an outlet section, a flexible tube, and a longitudinally movable slider as a cover member, the inlet section of the catheter valve has a stepped anti-slip section for attaching a supply line, and the catheter valve has two opposite running inclined sections on the longitudinally movable slider inside the base having two vertical chambers opposite each other on the sides. The objective of the present invention is to develop a catheter valve which: 1. is ergonomically well designed, so that the patient can get used to it even if he is bedridden for a long time; 2. since nursing costs are particularly important for long-term patients, the catheter valve must be extremely inexpensive; 3. since geriatric patients often have a reduced ability to move, due to this the catheter valve must be extremely easy to operate and with one hand; 4. since long-term use is often used, it is assumed that the entire valve can be cleaned and sterilized without difficult disassembly; and 5. unintentional removal of the catheter from the catheter valve must be prevented, thereby avoiding the risk of infection. This is achieved according to the invention in that a base body having two opposing running inclined sections has two opposing oblique chambers for operating and guiding two vertically movable magnets, which are arranged on two opposite lateral sides of the valve hose and selectively close or open the flow through the valve hose, and in the outlet part of the catheter valve an adapter can be inserted and fixed, which, together with a longitudinally movable slider, brings about a continuous open position of the catheter valve.

Apparatuses, including systems, for performing a valve replacement or repair. Apparatuses may include an outer catheter, 2024 / 148366 one or more interchangeable inner catheters, a guidewire and an expandable chordae tendinae deflector. The outer catheter and inner catheter may be configured to engage with to prevent gaps. The inner catheter may include a chordae tendinae deflector. The outer catheter may be configured as a rapid pacing sheath that may be used with any of these apparatuses.WO

An assembly including a transcatheter valve prosthesis and a crimping accessory. The transcatheter valve prosthesis including a stent and a valve component including at least one leaflet secured to the stent. The valve prosthesis includes a crimped having a crimped configuration for delivery and an expanded configuration. The crimping accessory assists in transitioning the valve prosthesis into the crimped configuration. In a first embodiment, the crimping accessory includes a conduit having a vacuum port configured to use suction force to move at least one leaflet radially inward. In a second embodiment, the crimping accessory includes a plurality of rods or graspers configured to contact and hold the at least one leaflet and to place a radially inward force as to move the least one leaflet radially inwards. Once each of the embodiments applies a force, the valve prosthesis is partially radially compressed into the crimped configuration.

An aspiration thrombectomy system includes a thrombectomy catheter assembly that maintains pulsatile energy of cyclic aspiration while the catheter is occluded. A system configuration includes a catheter, vacuum and vent fluid sources respectively connected to vacuum and vent valves, a vent catheter valve connecting a catheter lumen to the vent fluid source, a manifold connected to the catheter and vacuum and vent valves, a pressure sensor upstream of the vacuum valve, and a controller configured to operate the vacuum, vent, and vent catheter valves, receive sensor pressure data, control the vent catheter valve dependent upon the data. An operable lumen of the system includes a volume of the catheter lumen and an interior of the manifold up to an input of the vacuum valve input and an output of the vent valve.

A transcatheter valve having an expandable frame and a collapsible multi-portion skirt within the frame are provided with seams between the portions of the skirt that are located to cooperate with features of the frame and thereby reduce the exposure of the seams.

An assembly including a transcatheter valve prosthesis and a leaflet folding accessory configured for use when compressing the transcatheter valve prosthesis into the crimped configuration. The transcatheter valve prosthesis includes a stent and a prosthetic valve component including at least one leaflet disposed within and secured to the stent. The transcatheter valve prosthesis has a crimped configuration for delivery within a vasculature and an expanded configuration for deployment within a native heart valve. The leaflet folding accessory includes a plurality of guide fingers. Each guide finger is configured to contact the prosthetic valve component and hold the at least one leaflet in a predetermined configuration when the transcatheter valve prosthesis is compressed into the crimped configuration.

A transcatheter valve implant assembly has a ventricular assist device, a prosthetic valve, a stent frame structure, and a docking station, and is implanted at an aortic or a pulmonary valve. During implantation, the native valve leaflets of the respective valve at the implantation site are engaged with the prosthetic valve and / or the stent frame structure while the stent frame structure is connected to the docking station with the prosthetic valve adjacent to the proximal end of the stent frame structure. The ventricular assist device is inserted into the interior the stent frame structure with an inlet of ventricular assist device positioned in the respective ventricle associated with the implantation site and the outlet of the ventricular assist device positioned to discharge into the respective blood vessel associated with the implantation site. The ventricular assist device is releasably connected with the stent frame structure and the docking station.

Balloon catheters for delivery of prosthetic hear valves are provided. The balloon catheters are configured to deploy a prosthetic heart valve through inflation. The balloon catheters are further configured with one or more retention bumpers to reduce or prevent migration of the prosthetic heart valve during delivery. Balloon catheters described herein are configured with substantially incompressible retention bumpers that promote longitudinal inflation fluid flow.

To enable an accurate implant of an artificial valve and a precise development thereof in an aortic valve replacement surgery.SOLUTION: Disclosed is an artificial aortic valve which can expand and shrink in a radial direction and suitable for an implant of a balloon of a delivery catheter in a radially-shrunk state. The artificial aortic valve includes a support frame having three rows extending in a circumferential direction of an angled strut. One row of optional two continuous angles struts of the angles strut extending in the circumferential direction forms a peak and recess. A row of adjacent angled strut is mutually connected via a link (a diamond-shaped cell or a rhombohedral) and forms two rows of cell. The artificial aortic valve includes three valve projections, an inner skirt, and an outer skirt. The support frame and the delivery catheter provides a method for easily and accurately developing the artificial aortic valve at a target part.SELECTED DRAWING: Figure 1

A transcatheter heart valve prosthesis includes a frame including an inflow portion, an outflow portion, and a transition portion, and a prosthetic valve coupled to the frame. The outflow portion includes a plurality of endmost outflow crowns and a plurality of outflow struts with each endmost outflow crown being formed between a pair of opposing outflow struts. Each endmost outflow crown has an inner edge and an outer edge. When the transcatheter valve prosthesis is in an as-cut configuration, a first center point of a first radius of curvature of the inner edge is offset from a second center point of a second radius of curvature of the outer edge such that the endmost outflow crowns flare radially outward when the frame is radially expanded.

A transcatheter valve laceration device (10, 100) includes a leaflet support frame (12, 112) and a leaflet cutting assembly (14, 114), both of which are movably mounted on a guiding structure (16, 116) and movable between contracted and expanded orientations. In the expanded orientation, a blade protector (24, 124) of the leaflet support frame (12, 112) is positioned over a cutting element (36, 136) of the leaflet cutting assembly (14, 114).