9891 results about "Catheter" patented technology

In one embodiment, a medical system includes a catheter configured to be inserted into a chamber of a heart of a living subject, and including multiple electrodes configured to capture electrical activity from electrical activation signals propagating in tissue of the chamber, a display, and processing circuitry configured to automatically select bipolar signals to be captured into an electro-anatomical map from respective electrode pairs of the multiple electrodes responsively to an alignment of the respective electrode pairs with a direction of propagation of the electrical activation signals, and render the electro-anatomical map to the display.

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 present disclosure provides a method and system for analyzing unipolar electrophysiological (EP) signals acquired by a multi-electrode catheter placed in a ventricle of a patient's heart. The method includes receiving unipolar EP signals, extracting unipolar far-field signals from the unipolar EP signals, and analyzing the extracted unipolar far-field signals to estimate the distribution of scar regions across a thickness of wall tissue of the ventricle. Using the estimated distribution, a unipolar far-field EP map showing the scar regions is generated. The method further includes displaying the unipolar far-field EP map including the scar regions to a user. The system comprises a display device and a processor configured to perform the steps of the method.

Apparatus and methods for an implant are provided. The implant may have a constrained configuration and a relaxed configuration. The implant may include a strut having an end that may be captured by a hub and may define a reference angle in the relaxed configuration. The implant may include a swivel body that may engage a shaft of a delivery cable and may be rotated through the reference angle. The apparatus may include a pusher catheter to push the implant. The delivery cable may engage the implant. The apparatus may include gauge handle that may include a force gauge to indicate the presence of a force acting on the implant. The apparatus may include a bushing that may be fixed to an end of a pusher catheter. The bushing may move along a delivery catheter lumen and may guide the implant to a keyed position at the bushing.

Disclosed is an intraluminal ultrasound imaging system, including a processor circuit in communication with an intraluminal ultrasound imaging catheter, and configured to receive a plurality of intraluminal ultrasound images obtained by the imaging catheter while the imaging catheter is moved through a body lumen of a patient, wherein the plurality of intraluminal ultrasound images comprise axial cross-sectional views of the body lumen. The processor circuit is further configured to generate a stylized graphic of the body lumen based on the plurality of intraluminal ultrasound images, wherein the stylized graphic comprises a longitudinal cross-sectional view of the body lumen, and output, to a display in communication with the processor circuit, a screen display comprising the stylized graphic.

A blood pump system includes a catheter, a pump housing disposed distal of a distal end of the catheter, a rotor positioned at least partially in the pump housing, a controller, and an electrode coupled a distal region of the blood pump. The electrode can be used to sense electrocardiogram (EKG) signals and transmit the signals to a controller of the blood pump. The operation of the blood pump can be adjusted based on the EKG signal and on cardiac parameters derived from the EKG signal. Further, the controller can determine a need for defibrillation or pacing of the patient's heart based on the signal and can administer treatment with electrical shocks to the heart via the electrode coupled to the blood pump. The use of an electrode with a blood pump already in place in the heart allows for more efficient and safer treatment of serious cardiac conditions.

A modular disease management system may provide medication management for a patient. The system may include a base configured to at least partially couple to a tissue site of a patient. The system may further include a medication bladder coupled to the base and configured to maintain medication. The system may further include a medication pump coupled to the medication bladder, comprising a conduit and muscle wire-actuated plungers, wherein the medication pump is configured to cause the medication to flow from the medication bladder through the conduit. The system may further include a cannula insertion device coupled to the medication pump via the conduit, wherein the cannula insertion device comprises a cannula, a spring, and a triggering component, wherein the cannula insertion device is configured to insert the cannula into the tissue site of the patient by actuation of the spring released by the triggering component.

A catheter includes a catheter body, a pump assembly and a cannula. The pump assembly can be disposed at a distal end of the catheter body and has a distal portion. The cannula can be coupled to the distal end portion of the pump assembly and can include a proximal cannula portion and a distal cannula portion. The distal cannula portion has an approximately helical shape which can allow the cannula to be inserted into a patient's right heart and pump blood therethrough. In certain implementations, the distal tip of the helical shape has a slight bias relative to the main helix to further facilitate delivery of the device. In certain applications this bias is toward the central axis of the helix.

An intra-vessel transcatheter filter device (1) designed to capture and remove emboli, thus preventing distal embolization, comprising: • a tubular filter (2) comprising a flexible porous material and defined by a distal element and a proximal element, namely a main body (3) and a funnel (4); i. said main body (3) having a length adapted to extend within a suitable vessel zone; said main body (3) comprising: a) a distal end (5) that is adapted to be radially coupled with said zone and hermetically sealed to it when the device is in an active configuration, said distal end (5) being provided of selectively actionable closure means so that said distal end is designed to be open when the device is in an active configuration and closed before the device retraction, b) a proximal end (6); ii. said funnel (4) forming an extension of said main body (3), with the funnel base located at said proximal end (6). • a support structure assembly (8) comprising: i. a supporting catheter (11) extending within said main body (3), ii. one radially expandable distal structure (9) fixed to said distal end (5), iii. one radially expandable proximal structure (10) positioned in correspondence of said proximal end (6), said distal structure (9) and said proximal structure (10) being fixed at least in an end to said supporting catheter (11).

The embodiment of the present application provides an ultrasonic ablation device and equipment. The ultrasonic ablation device is used for being selectively placed in a cavity of a human body and performing ultrasonic ablation on a tissue to be ablated in the human body, and comprises a catheter and a deformation transducer. Two ends of the catheter are respectively a liquid inlet end and a liquid outlet end, and a positioning capsule is arranged on the outer wall close to the liquid inlet end, the positioning capsule is used for being placed in the cavity and being deformed to selectively position the catheter. The deformation transducer is arranged on the outer periphery of the positioning capsule, and under the action of the deformation force of the positioning capsule, the deformation transducer is deformed to selectively emit ultrasonic energy along a first direction, and the first direction can form an included angle of 10 degrees to 90 degrees with the axial direction of the catheter. The embodiment of the present application can effectively expand the size of the deformation transducer, and then can make the treatment range of the ultrasonic ablation device wider, and effectively improve the treatment effect.

Systems and methods include positioning of a catheter lumen in a first position with respect to a thrombus, the catheter lumen defined by a catheter, initiating of evacuation of a tubing lumen, where the tubing lumen is not in fluid communication with the catheter lumen, determination that a pressure within the tubing lumen is equal to or less than a target aspiration pressure, and, in response to the determination that the pressure within the tubing lumen is equal to or less than a target aspiration pressure, automatic establishment of fluid communication between the tubing lumen and the catheter lumen.

The application relates to the field of medical devices, in particular to a repair system capable of accurate positioning, which comprises a delivery catheter, a positioning support arranged in the delivery catheter, an anchoring mechanism, a flexible sleeve and a guide wire, the positioning support is arranged at the distal end of the delivery catheter, the positioning support is provided with a plurality of anchoring points distributed in the circumferential direction, the flexible sleeve is provided with a plurality of connecting points arranged in correspondence with the anchoring points, the guide wire passes through the connecting points and the anchoring points corresponding to the connecting points in sequence, and after the positioning support is released, the anchoring mechanism pushes the flexible sleeve, so that the flexible sleeve cooperates with the guide wire and guides the anchoring mechanism to reach each anchoring point along a predetermined route and complete anchoring; the application not only simplifies the structure of the device, but also realizes accurate guidance.

A fluidics system includes a cassette having a saline subsystem, a contrast subsystem, and a vacuum subsystem. The fluidics system further includes a splitter and a first tubing set coupled to the cassette and splitter, the first tubing set having a single saline channel, a single contrast channel, and a single vacuum channel. The fluidics system further includes two or more hub assemblies, at least one of the two or more hub assemblies configured to have a third saline flow-path, a third contrast flow-path, and a third vacuum flow-path to provide saline, contrast and vacuum to the lumen of a catheter coupled to the at least one of the two or more hub assemblies. The fluidics system further includes a second tubing set having a plurality of tube groups, each tube group coupled to the splitter and to one of the two or more hub assemblies.

Described herein are systems, devices, and methods for methods for autologous blood transfusion. For example, an apparatus may comprise a fluid conduit configured to receive a volume of fluid from a patient and a container fluidically coupled to the fluid conduit. The container may define a reservoir configured to receive the volume of fluid from the fluid conduit. The apparatus may include a vacuum conduit couplable to a vacuum source, a vent configured to vent air into the reservoir, and at least one valve configured to couple the reservoir to the vacuum conduit to generate negative pressure within the reservoir such that the volume of fluid is drawn into the reservoir, and decouple the reservoir from the vacuum conduit while coupling the reservoir to the vent such that air is vented into the reservoir at an average rate that prevents turbulent movement of the volume of fluid within the reservoir.

Delivery systems are used for medical devices. For example, this document describes delivery systems for implantable medical devices such as, but not limited to, prosthetic heart valves that are deliverable in a minimally invasive manner using a system of catheters. The delivery systems may include a valve stop member that establishes the longitudinal position of the prosthetic heart valve on a balloon member. Such a valve stop member can be constructed as a braided wire body or cellular body to provide multiple advantages.

A closing structure (10) attachable to and detachable from a refillable vessel (20) for containing a liquid comprises a drinking straw (12) with an interior duct, a first end and a second end in a longitudinal direction of the drinking straw, an attachment structure (32) for attaching a replaceable aroma container (30), the aroma container having an interior aroma chamber and an air inlet opening (42) and an air outlet opening (40), a fixed element (46) which comprises an air duct (52) and a fluid guiding duct (50) in fluid communication with the interior duct (14) of the drinking straw (12). The closing structure comprises a movable element (48) attached to the fixed element (46) and rotationally movable relative to the fixed element. The movable element (48) comprising a spout section (54) and at least one stop means (78) for restricting the relative movement of the movable element (48) relative to the fixed element (46) such that the movable element is rotationally movable relative to the fixed element between a storing position and an operational position.

The invention relates to a device for use in the transcatheter treatment of mitral valve regurgitation, specifically a coaptation assistance element for implantation across the valve; a system including the coaptation assistance element and anchors for implantation; a system including the coaptation assistance element and delivery catheter; and a method for transcatheter implantation of a coaptation element across a heart valve.

The invention provides an intravascular occluder which comprises an occluder body, a catheter part and a control mechanism, the occluder body is of an umbrella-shaped structure formed by a plurality of frameworks which can be opened, and a layer of covering is attached to the occluder body; the catheter part is used for accommodating the plugging device and the connecting rod part of the control mechanism; the control mechanism comprises a connecting rod part and a handle control part, and is used for controlling the pushing and withdrawing of the plugging device; after the plugging device is unfolded to completely plug the inner diameter of the blood vessel, the function of cutting off blood flowing can be achieved, a space for blood flowing can be reserved at the position close to the inner wall of the blood vessel by properly retracting the plugging device into the catheter, and the plugging device can be completely retracted into the catheter by completely retracting the plugging device. The device has the advantages that unfolding and folding are completely reversible, controllable opening and cutting of blood flow can be achieved, complications caused by long-time ischemia of blocked blood vessels can be avoided, and a long-time operation becomes possible.

This disclosure relates to a catheter system for introducing a heart valve stent into the body of a patient. The catheter system includes a catheter tip having a seat portion for accommodating the stent in its collapsed state and a stent holder for releasably fixing the stent, wherein the seat portion is constituted by a first sleeve and a second sleeve, said sleeves being moveable relative to each other and relative to the stent holder, and a catheter shaft for connecting the catheter tip to a handle.

The invention relates to the technical field of medical navigation, in particular to an augmented reality blood vessel fusion navigation system for transcatheter occlusion, which comprises a real-time image acquisition module, a blood vessel three-dimensional model construction module, an image enhancement module, a navigation module and a fusion module, and is characterized in that the image acquisition module is connected with an ultrasonic catheter to acquire a blood vessel three-dimensional image. The model construction module creates a three-dimensional blood vessel model based on the images, the image enhancement module enhances the blood vessel image through spatial adaptive transformation, key point recognition, region adaptive segmentation and edge feature extraction, and the navigation module determines the position of the tip of the catheter by using the three-dimensional blood vessel model and the enhanced image. The fusion module fuses the enhanced image and the blood vessel model to generate fusion display data, and the AR equipment displays the blood vessel three-dimensional model at the tip position of the catheter in an overlapping manner based on the tip position of the catheter and the fusion data, so that the visualization effect of a complex blood vessel structure is remarkably improved, and an accurate space reference is provided for catheter navigation.

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.

Single and dual frame prosthetic venous valve assemblies, and catheter delivery systems and methods, are disclosed. A representative dual frame venous valve assembly includes an outer valve frame having a lumen and a frame and venous valve assembly arranged within the lumen. The frame and venous valve assembly, which also may be a stand- alone prosthetic venous valve assembly, includes an inner valve frame having a frame matrix forming lateral valve supports and valve commissure supports; a polymeric frame coating encapsulating the frame matrix; and a one or more polymeric leaflets integrally formed with or coupled to the polymeric frame coating, with each leaflet moveable between an open or partially open state and a closed or partially closed state. A delivery catheter includes keys or slots for insertion of locking tabs of the outer valve frame, and a deployment control handle for controlling deployment of the venous valve assembly.

The invention relates to a delivery device for delivering a self-expanding tubular implant and a system comprising the same. The conveying device comprises a pushing rod; at least one expandable body disposed at a distal end of the push rod, the expandable body configured to: axially elongate in a radially constrained contracted state; under the expansion state of releasing the constraint, radial expansion and axial contraction are realized; the elastic core wire is arranged in the expandable body in a penetrating mode and connected with the two ends of the expandable body, and the core wire is kept in a straight line shape in the natural state and the contraction state of the expandable body. The conveying device provided by the invention can be matched with a small-size micro catheter and can provide enhanced axial pushing force in the conveying process, so that the pushing efficiency and the operation stability of the tubular implant are improved; meanwhile, the radial expansion force provided by the expandable body can form effective auxiliary support for the implant, rapid wall attachment and stable expansion of the implant are promoted, and therefore the release effect of the implant is improved.

The invention relates to a device for use in the transcatheter treatment of mitral valve regurgitation, specifically a coaptation assistance element for implantation across the valve; a system including the coaptation assistance element and anchors for implantation; a system including the coaptation assistance element and delivery catheter; and a method for transcatheter implantation of a coaptation element across a heart valve.

Polymeric tubing, for use with catheters or other medical devices, where the polymeric tubing can have regions of customized properties including, but not limited to, durometer, torque control, flexibility, axial strength, stiffness, etc. One variation of the device allows for transitions between regions to be configured such that there can be gradual or customized transitions between various regions such that the structural characteristics differential between the regions selectively designed. Additional variations include outer layers having a plurality of material sections extending in a spiral direction along the axial length to form a continuous wall of the outer layer. In certain variations, the structural characteristic differential is minimized or eliminated as compared to conventional catheters.

The invention relates to a device for use in the transcatheter treatment of mitral valve regurgitation, specifically a coaptation assistance element for implantation across the valve; a system including the coaptation assistance element and anchors for implantation; a system including the coaptation assistance element and delivery catheter; and a method for transcatheter implantation of a coaptation element across a heart valve.

The present invention provides a system and method for treating tight, hard-to-cross calcified lesions in which an angioplasty balloon is used to dilate the lesions and provide shock waves to restore normal blood flow in a patient's artery. An exemplary device includes an elongated tube and a balloon wrapped circumferentially around the tube and sealed to a distal end of the tube. During treatment, the device is advanced into a patient's vasculature and the balloon is inflated with conductive fluid such that the balloon is fixed to walls of the vasculature proximal to the calcified lesion. The balloon includes at least one low-profile emitter positioned near the distal end of the balloon, which may be activated to generate shock waves to break loose calcifications in the lesion. After calcium in the tight lesion has been modified, the balloon can be deflated and advanced further into the lesion to continue treatment.

A cardiac assist device with an expandable cup (4) having a transport state and an operational state, the expandable cup comprising a plurality of inflow apertures (5), and an outflow nozzle (6), and an inflatable balloon (8) positioned inside the expandable cup (4). A catheter assembly (3) is connected to the inflatable balloon (8) during operation, and a control unit (2) is connected to the catheter assembly (3). The control unit (2) is arranged to operate the inflatable balloon (8) with a frequency of more than 100 beats per minute.

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).

Microcatheter systems for crossing total occlusions are provided. Aspects of the systems include: a microcatheter with proximal and distal regions, the distal region comprising a fixed, sealed end, wherein the microcatheter comprises a lumen that receives liquid and gas, a fluid introduction module for introducing liquid and gas into the microcatheter lumen and an actuator that repeatedly pressurizes a liquid and gas mixture present within the microcatheter lumen such that the distal region of the microcatheter vibrates, moving the microcatheter across a total occlusion. Also provided are methods for modulating a total occlusion, e.g., by crossing a total occlusion or modifying a proximal cap thereof, e.g., by producing a divot or hole in the proximal cap. The systems and methods find use in a variety of different applications, including balloon angioplasty applications or other catheter-based therapies or treatments, such as conditions in which a total occlusion may be present in a vessel, including, for example, cardiovascular disease.