406 results about "Atrial Appendage" patented technology

The invention discloses a left auricle plugging device provided with a real-time atrial pressure monitoring chip, and particularly relates to the technical field of left auricle plugging, the left auricle plugging device comprises a plugging device body and a connector, the top end of the connector is provided with a signal supply module, and the signal supply module is located in the plugging device body; according to the left atrial appendage plugging device, after the inductor in the nut generates a voltage signal, the signal can be transmitted to the low-noise operational amplifier and amplified, meanwhile, the electromagnetic interference between the noise of a circuit and the outside world is restrained, and the plugging device can be used for plugging the left atrial appendage of the left atrial appendage of the left atrial appendage. The physical deformation is converted into corresponding electric signals, the electric signals are transmitted to an in-vitro receiving terminal through an antenna, and a doctor can indirectly judge the recovery condition of the atrial contraction function of the patient according to the pressure signal trend.

The present invention provides a left atrial appendage occluder, comprising: a fixing disk, the fixing disk having a first connection structure, the first connection structure having a first threaded section; an occlusion disk, the occlusion disk having a second connection structure, the second connection structure having a second threaded section, both the first threaded section and the second threaded section having a thread structure and being threadedly engaged with each other, the occlusion disk further having a conveying thread for threadedly cooperating with a conveying steel cable, the rotation direction when tightening the thread structure being opposite to the rotation direction when tightening the conveying thread, the first connection structure and / or the second connection structure further including a moving section, after the first threaded section and the second threaded section are threadedly tightened to a preset distance, the first threaded section disengages from the second threaded section, and the second threaded section or the first threaded section cooperates with the moving section, and the fixing disk and the occlusion disk can axially move a predetermined distance along the moving section. The present invention solves the problem that the left atrial appendage occluder in the prior art is prone to loosening when connected and cooperated with the conveying steel cable.

A clip and method provide for surgically minimizing or eliminating an atrial appendage of the patient using a clip. The clip includes first and second elongate beam. The clip includes a dual side spring assembly configured to urge the first and the second elongate beams from an open V-shaped position to a parallel closed position. The dual side spring assembly includes a right-side spring and a left-side spring having first and second terminal ends attached to distal sections respectively of the first and the second elongate beams. The right and the left-side springs extend proximally to a respective proximal bend connected by a lateral element that maintains alignment to resist lateral splaying movement of the first and the second elongate beams.

A recapturable external LAA exclusion clip system includes a clip comprising first and second clip struts, at least one of the struts having a connector interface comprising a first portion of a lock, and a delivery device comprising a handle and an end effector. The handle comprises jaw and lock controls. The end effector is connected to the handle and comprises a clevis and first and second jaws. The jaws are connected to the clevis and operatively connected to the jaw control to actively articulate at least one of the jaws with respect to the other. At least one of the jaws has a connector comprising a second portion of the lock operatively connected to the lock control to removably lock with the first portion of the lock. The first and second portions of the lock have a locked state and are configured to unlock the locked state upon actuation of the lock control.

The invention belongs to the technical field of interventional medical instruments and relates to a plugging device which comprises a fixing portion, a sealing portion and a connecting portion, the connecting portion is arranged between the fixing portion and the sealing portion, and a first connecting piece and a second connecting piece of the connecting portion are independently connected with the fixing portion and the sealing portion respectively. The plugging device comprises an initial state and an assembly state, and in the initial state, the first connecting piece and the second connecting piece are mutually independent; in an assembling state, the first connecting piece is connected with the second connecting piece so as to connect the fixing part and the sealing part; therefore, the sealing part and the fixing part can be packaged and produced independently, and can be assembled according to the required size when being implanted, so that the assembled left auricle plugging device has better adaptability and can also adapt to left auricle shapes with special sizes.

A clip may be configured to close the portion of the heart, to reduce blood flow therethrough as well as passage of clots or other undesired materials. The clip may be configured to close the left atrial appendage (LAA). The closure of the LAA may reduce the possibility of stroke or other maladies stemming from fluid flow with the LAA. Delivery systems may comprise expansion apparatuses for a left atrial appendage clip. The expansion apparatuses may include retention mechanisms for retaining the clip.

Devices and methods are described for facilitating passage of a probe or other element across an anatomical boundary. In some embodiments, the probe may be an intracardiac echo (ICE) probe, and the anatomical boundary may be the interatrial septum (IAS). The probe is delivered via transcatheter access from a femoral vein to the right atrium using a moveable guide catheter through which the probe and a wire with a resizable distal loop are advanced. The probe and wire may extend through respective lumens of the guide catheter. The loop may be resized to track, capture, and release a sheath, such that a transcatheter delivered medical device such as a left atrial appendage (LAA) occlusion device or other device, may traverse the IAS with the ICE probe via a single puncture site.

A left atrial appendage closure (LAAC) device is adapted for occluding a patient's left atrial appendage (LAA). The LAAC device includes a shape memory foam occlusive element that is adapted to expand from a crimped configuration for delivery to an expanded configuration after deployment, the shape memory foam occlusive element including in its expanded configuration a distal face, a proximal face and an intervening periphery. A reinforcing member is disposed relative to the shape memory foam occlusive element and is adapted to limit deformation of the shape memory foam occlusive element after the shape memory foam occlusive element has expanded into the expanded configuration.

The invention discloses a positioning plug for a segmented plug type left auricle plugging device, which comprises a net-shaped plug body, one end of the plug body is provided with a connecting piece used for connecting a plugging plug, the periphery of the plug body is provided with an anchoring structure, and in the releasing process, except for the anchoring structure, the plug body can be in smooth surface contact with a left auricle. According to the segmented plug type left atrial appendage plugging device, the positioning plug and the plugging plug are used in cooperation, the plugging plug can be supported and positioned, the positioning plug can be used as a support of the plugging plug in the plugging plug release process, the position and release angle of the plugging plug can be adjusted, a better plugging effect is obtained, overturning is avoided, and the plugging effect is improved. Meanwhile, the inner wall of the left atrial appendage is prevented from being damaged, and the operation success rate is increased.

The utility model provides a left auricle plugging device and a left auricle plugging system. The left atrial appendage occluder comprises a fixed disc; a plugging disc; the universal joint assembly is connected with the fixing disc and the plugging disc so that the plugging disc can rotate in a universal mode relative to the fixing disc. The universal joint assembly comprises a limiting piece and a universal joint component, the limiting piece is provided with a containing cavity, a universal structure is arranged at the first end of the universal joint component, the universal structure is movably arranged in the containing cavity, and the universal structure and the limiting piece form a limiting stop. Wherein the limiting piece comprises a plurality of connecting sections, the connecting sections are sequentially welded end to end to define a containing cavity, and clamping structures matched with each other are arranged on the connecting end faces of every two adjacent connecting sections. The left atrial appendage plugging device solves the problem that in the prior art, a left atrial appendage plugging device is poor in applicability.

Left atrial occlusion devices and methods of occluding a left atrial appendage. The left atrial occlusion devices can be carried by a flexible elongate member, have an inflatable member, and have a plurality of flexible elongate implant members forming a distally open cage configuration when expanded. The implant members have a flexible format to allow them to conform to the anatomy of the left atrial appendage. The distal ends of the flexible elongate member can optionally be atraumatic.

The invention belongs to the technical field of medical instruments, and relates to a traction device of a degradable left atrial appendage occluder, which comprises a body, a display unit for displaying a traction signal and a fixing assembly are arranged on the body, and the fixing assembly is slidably connected with the body through a conversion assembly. The conversion assembly is used for converting the moving signal of the fixing assembly into a display signal which can be displayed on the display unit; one end of the conveying steel cable is connected with the fixing assembly, and the other end of the conveying steel cable is connected with the left auricle plugging device; according to the degradable left atrial appendage occluder, the fixing assembly is slidably connected with the body, so that external traction force of the degradable left atrial appendage occluder can be buffered, the pulling force of the body cannot directly act on the conveying steel cable, and the operation experience of a user is improved; meanwhile, the traction force of the fixing assembly is converted into a visual signal through the conversion assembly, an operator can conveniently apply the traction force more visually, and the risk that the plugging device is displaced and disengaged due to the fact that the traction force is too large is reduced.

An implant for occluding a left atrial appendage may include an expandable framework configured to shift between a collapsed configuration and an expanded configuration. The expandable framework includes a proximal hub and a distal hub. A longitudinal axis of the expandable framework extends from the proximal hub to the distal hub. A radiopaque marker may be positioned longitudinally between the proximal hub and the distal hub in the expanded configuration.

Devices and methods are described for occluding the left atrial appendage (LAA). The device excludes the LAA from blood flow to prevent blood from clotting within the LAA and subsequently embolizing, particularly in patients with atrial fibrillation. The implantable device is delivered via transcatheter delivery into the LAA and secured within the LAA. The implant comprises an expandable and compliant frame and an expandable and conformable tubular foam body. The device may have a thromboresistant cover at a proximal end. The frame may have recapture struts inclining radially outwardly from a central hub. The frame may have axially extending side wall struts, with adjacent pairs of side wall struts joined at one or more apexes. Anchors extend from the frame and into the foam to engage tissue.

A method of occluding a left atrial appendage (LAA) of a patient comprising: injecting a photocurable biomaterial into the LAA of the patient; and irradiating the photocurable biomaterial with actinic radiation, thereby inducing crosslinking of the photocurable biomaterial in situ in the LAA to form an interpenetrating network (IPN) or semi-interpenetrating network (sIPN) comprising a first network polymer and a second network polymer, wherein the first network polymer comprises a hydrophilic polymer; and wherein the second network polymer comprises a silicone rubber.

A device for implantation in a left atrial appendage of the heart comprises docking station comprising a radially expansible element that is adjustable between a contracted orientation suitable for transluminal delivery and a deployed orientation configured to anchor within the left atrial appendage and fluidically isolate the left atrial appendage from the left atrium, the docking station also includes a recessed socket accessible from the left atrium through an opening, and a closure coving the opening. A modular active element is configured for detachable engagement within the recessed socket of the docking station. The modular active element comprises a treatment element configured to electrically stimulate heart tissue, thermally stimulate heart tissue, electroporate heart tissue, or deliver a substance into heart tissue or a chamber of the heart, or a sensing element configured to detect a parameter selected from temperature, pressure, electrical signal, heart rate, or respiratory rate.

The utility model provides a rapid non-exchange puncturing and conveying system for heart patent foramen ovale plugging. The rapid non-exchange puncturing and conveying system comprises a conveying sheath body and an expansion inner core. The conveying sheath body comprises a sheath head section, a bending adjusting section, a pipe body section and a connector section which are sequentially arranged. The total length of the sheath head section and the bending adjusting section is 2-3 cm, the length of the bending adjusting section is 0.5-1 cm, and the bending degree of the bending adjusting section is adjustable. The expansion inner core is arranged in the conveying sheath body in a penetrating mode. The conveying sheath body, the expansion core and the plugging device assembly system can smoothly complete the conveying sheath to enter the left atrium through the patent foramen ovale and complete the plugging device release operation, particularly, the bending adjusting section is designed to be adjustable in bending, the conveying sheath is more suitable for right atrium operation of different forms, the instrument exchange step in the existing operation process is reduced, and the operation efficiency is improved. The risk that an atrium and an atrial appendage are damaged by an existing material is reduced, the operation time can be remarkably shortened, and a very simple patent foramen ovale plugging operation is achieved.

The present application relates to an occlusion device comprising a fixing portion and a sealing portion. The fixing portion comprises at least one support member. The occlusion device has an initial state and an assembled state. In the initial state, a first connection portion and a second connection portion are separated from each other. In the assembled state, the first connection portion is connected to the second connection portion to connect the fixing portion and the sealing portion. Therefore, the sealing portion and the fixing portion can be relatively independently packaged and produced, and assembled according to required dimensions when implantation is needed. Thus, the assembled left atrial appendage occlusion device exhibits relatively good adaptability and can also adapt to left atrial appendages with special shapes.

A left atrial appendage closure (LAAC) device may be adapted for occluding a patient's left atrial appendage (LAA). The LAAC device includes a shape memory polymer foam body that is adapted to expand from a crimped configuration for delivery to an expanded configuration after delivery. The shape memory polymer foam body. An adhesive layer is disposed relative to the shape memory polymer foam body.

The present invention provides a left atrial appendage occlusion device, which includes an occlusion member, an ablation member connected to the occlusion member, and a mapping member. The occlusion member is used to be fixed at the opening of the left atrial appendage, the ablation member is used to transmit ablation energy to ablate the target tissue area in the left atrial appendage, and the mapping member is used to receive electrophysiological signals to map the target tissue area. The left atrial appendage occlusion device can not only occlude the opening of the left atrial appendage, but also control the ablation member to ablate the target tissue area in the left atrial appendage, and the mapping member can map the electrical signals in the left atrial appendage to ensure that a complete ablation area of ​​at least one circle is formed near the opening of the left atrial appendage to achieve a complete electrical isolation treatment effect.

The present application discloses a mitral valve repair device, which includes a tissue clamping device and a control handle; the tissue clamping device includes an outer clamping arm and an inner clamping arm; the control handle includes an outer clamping arm control mechanism and an inner clamping arm control mechanism, the outer clamping arm control mechanism is used to control the opening and closing of the outer clamping arm, and the inner clamping arm control mechanism is used to control the opening and closing of the inner clamping arm relative to the outer clamping arm; the control handle is used to transport the tissue clamping device to the mitral valve via the left atrial appendage and the left atrium, and control the opening and closing of the outer clamping arm and the inner clamping arm so that the mitral valve can be clamped between the outer clamping arm and the inner clamping arm.

A clip may be configured to close a portion of a heart to reduce blood flow therethrough and passage of clots or other undesirable materials. The clip may be configured to close a left atrial appendage (LAA). The closure of the LAA may reduce the likelihood of stroke or other disease caused by fluid flow with the LAA.

Apparatus and methods of determining a cardiac implant size and methods and system for transesophageal echocardiogram guided implantation of left atrial appendage closure device. The apparatus includes an ultrasonic imaging device, at least a processor, and a memory communicatively connected to the at least a processor, wherein the memory contains instructions configuring the at least a processor to using the ultrasonic imaging device collect a plurality of ultrasonic images using a 3D cardiac model generation machine learning model trained on a training dataset including example ultrasonic images correlated with example 3D cardiac models. The processor is further configured to generate a 3D cardiac model based on the plurality of ultrasonic images, generate at least a cardiac measurement based on the 3D cardiac model, determine a cardiac implant size based on the at least a cardiac measurement, and using a display, display to a user the cardiac implant size.

Medical devices, systems, and methods are provided for occluding a left atrial appendage of a heart. In one embodiment, the medical device system includes a pusher catheter having a medical device coupled adjacent a distal end of the pusher catheter. The medical device includes a primary hub and a secondary hub with a framework extending therebetween, the primary hub including a groove defined therein. The framework is movable between a contracted position and an expanded position, and when the framework moves to the contracted position, the groove is configured to align with a portion of the framework as the secondary hub moves through the hole in the primary hub. In another embodiment, components of the framework may be configured to minimize resistance in the system as the medical device is delivered and moved between the contracted and expanded positions.

An implant includes a plurality of foam layers attached together, wherein each foam layer includes a plurality of wedges monolithically formed with a base portion. A cap layer of foam may be attached at an axial end of the foam layers attached together. The cap layer of foam is disk-shaped and is devoid of wedges. A method of making an implant includes cutting disk-shaped pieces of foam partially through their thickness to define pluralities of wedges monolithically formed with base portions, securing the base portions in a contracted configuration to flare the pluralities of wedges apart from each other, and attaching the base portions such that adjacent pluralities of wedges are interdigitated.

The utility model discloses a left atrial appendage occluder, which relates to the technical field of medical instruments and comprises an anchoring disc and an occluding disc, the anchoring disc is provided with a first central shaft, the occluding disc is provided with a second central shaft, and the first central shaft and the second central shaft are arranged in a staggered manner. The occluder is positioned at a target position, such as a left atrial appendage, through the anchoring disc, and the left atrial appendage is occluded through the occluding disc. The central axis of the anchoring disc and the central axis of the plugging disc are arranged in a staggered mode, and the better plugging effect is achieved especially for the case that an outlet of the left auricle is eccentric relative to an outlet channel.

An occlusive device for the left atrial appendage is plastically deformable and biodegradable.

A left atrial appendage closure (LAAC) device is adapted to pull a left atrial appendage (LAA) closed on itself. The LAAC device includes a central hub and a plurality of engagement arms that are coupled to the central hub. At least some of the plurality of engagement arms include a tissue engaging region having one or more hooks that extend in a first circumferential direction. A drive mechanism is engaged with the central hub and is adapted to rotate the central hub in the first circumferential direction.

An occlusion device with particular utility in occlusion of left atrial appendages is described. The occlusion device embodiments utilize an inflatable balloon or expandable element used to occlude the treatment site.

A shunt device is configured to be implanted at a site of an elongated shunt opening in a tissue wall between a left atrial appendage (LAA) and a great cardiac vein (GCV) of a human heart. The shunt device includes a body portion through which a flow path extends, one or more anchoring portions connected to the body portion, and an elongated flow path opening configured to align with the elongated shunt opening in the tissue wall to permit blood to flow from the LAA into the GCV through the shunt device along the flow path.