306 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.

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.

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 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.

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.

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.

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.

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.

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.

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.

Medical devices, systems and methods for occluding a left atrial appendage of a heart with an implantable medical device and three-dimensional imaging. In one embodiment, the imaging is facilitated with a controller coupled to one or more magnetic field generators and a display, the one or more magnetic field generators configured to generate a magnetic field within the anatomy of a patient and the display provides the imaging and display information thereon. The medical system also includes a medical device delivery system for delivering the implantable medical device. The medical device includes one or more magnetic field location sensors therewith that are operatively coupled to the controller. With this arrangement, the sensors are sized and configured to facilitate providing the three-dimensional imaging within the heart that is viewable on the display to assist a physician to safely and effectively implant the medical device.

The invention relates to the technical field of left atrial appendage ligation machinery, and discloses a left atrial appendage ligation device.The left atrial appendage ligation device comprises a guiding sheathing canal, an adjustable bending conveying sheathing canal, a puncture reversing unit, a lasso unit and a line cutting unit, the puncture reversing unit is used for puncturing a left atrial appendage and driving the left atrial appendage to move, and left atrial appendage reversing is achieved; the lasso unit is provided with a lasso ring which can be shrunk and is used for sleeving and closing a left auricle; and the wire cutting unit is used for cutting and binding redundant parts in the left auricle rear lasso unit. According to the left atrial appendage ligation device, by integrating the puncture reverse unit and the lasso unit, ligation of the left atrial appendage is achieved, and the problems that plugging is poor in the left atrial appendage closing process, and many risks such as instrument residue leakage and related thrombus occurrence rate exist are solved.

The invention discloses a segmented plug type left auricle plugging device, a left auricle plugging system and a using method thereof.The segmented plug type left auricle plugging device comprises an inner plug structure and an outer plug structure which are connected through a connecting structure, and the inner plug structure and the outer plug structure are each of a net-shaped plug body structure capable of entering a left auricle to be fixed; the inner plug structure can limit and fix the plugging device, a flow blocking film is arranged on the outer plug structure, and anchoring structures are arranged on the periphery of the inner plug structure and the periphery of the outer plug structure. According to the segmented plug type left atrial appendage plugging device, the inner plug structure and the outer plug structure are arranged in a segmented mode, double plugs are matched for plugging and positioning, the mutual supporting effect is achieved in the releasing process, particularly, in the releasing process of the outer plug structure, the outer plug structure is supported by the inner plug structure, the position of the outer plug structure is adjusted, and the plugging effect is good. Therefore, a better plugging effect is achieved, overturning is avoided, and the success rate of an operation is increased.

This invention relates to a left atrial appendage occlusion device, comprising an occlusion disc, a connecting mechanism, and a filling module. The occlusion disc is connected to the filling module via the connecting mechanism. The filling module includes at least one filling unit, and all the filling units are connected in series. The filling module is used to fill the entire interior of the left atrial appendage. By setting the occlusion disc and the filling module, the number and size of the filling units in the filling module can be customized according to the shape of the lesion in the left atrial appendage, so as to better fill the lesion space and achieve the effect of occlusion of the left atrial appendage in conjunction with the occlusion disc. By setting polyurethane foam in the occlusion disc, thrombus formation and occlusion can be quickly achieved and the endothelialization process can be accelerated. At the same time, the filling unit made of polyurethane foam can also accelerate the closure of the entire chamber.

A guide catheter that is adapted to accommodate a left atrial appendage closure (LAAC) device being advanced towards a left atrial appendage (LAA) includes an elongate shaft extending from a proximal region to a distal region and a guide catheter hub that is coupled to the proximal region of the elongate shaft. The guide catheter hub includes a hub body, a Tuohy seal disposed relative to the hub body, a flat seal disposed relative to the hub body, and a mechanism disposed relative to the hub body that is adapted to releasably open the flat seal.

A left atrial appendage closure device adapted to occlude a left atrial appendage includes a conical insert formed from an expandable foam and adapted for transseptal delivery to an LAA. A polymeric cover is disposed on the conical insert, the polymeric cover adapted to protect the conical insert during transseptal delivery to the LAA, the polymeric cover adapted to be removed after transseptal delivery to the LAA. The insert lumen extends through the conical insert prior to expansion of the conical insert. A tubular support rod extends through the insert lumen, the tubular support rod is operably coupled with at least a portion of the polymeric cover, the tubular support rod itself defines a tubular support rod lumen adapted to receive a guidewire on which the insert may be advanced into the LAA and / or a radio frequency (RF) energy line adapted to perform a transseptal puncture.

The application discloses a plugging device and relates to the technical field of medical devices. The plugging device comprises a plugging body, an elastic connecting piece and a hanging component. The plugging body is adapted to the shape of a target plugging area. One end of the elastic connecting piece is arranged on the plugging body. One end of the hanging component is connected with the other end of the elastic connecting piece, and the hanging component is adapted to be hung on the tissue of the target plugging area. The plugging device for cauliflower-shaped left atrial appendages is made of degradable materials, can be implanted into the left atrial appendages of a patient through a minimally invasive catheter intervention operation to realize plugging of the left atrial appendages, can guide the climbing of the endothelial tissue in the left atrium, and can realize complete degradation of the device in the human body after endothelialization. Finally, the plugging effect is realized by the patient's autologous tissue, the formation and shedding of thrombus embolus in the left atrial appendages are effectively prevented, and the risk of stroke is greatly reduced.

The present application relates to a left atrial appendage occluder, comprising: an expandable frame transitionable between a compressed state and an expanded state; a covering membrane arranged along at least part of the outer surface of the expandable frame; a connecting structure arranged at the proximal end of the expandable frame and being connectable to and disconnectable from a conveying system; and an anticoagulant coating arranged only on at least part of the outer surface of the covering membrane. The present application can reduce the risk of thrombus formation on the surface of the left atrial appendage occluder and accelerate the endothelialization process.

Embodiments of the present invention provide an improved vascular occlusion device for occlusion of a passageway, cavity, or the like. According to one embodiment, a medical device for occluding a left atrial appendage is provided. The medical device includes a first portion having at least one plane of occlusion that is configured to be positioned outside of the left atrial appendage, and a second portion having at least one plane of occlusion that is configured to be at least partially positioned within a cavity defined by the left atrial appendage.

This invention provides a system and method for determining the specifications of a left atrial appendage closure device based on two-dimensional (2D) intracardiac echocardiography (ICE). [Solution] In imaging procedures, 2D-ICE is used to acquire images of the patient's left atrium. A model of the left atrium is generated from the images of the left atrium. The model of the left atrium is used to validate subsequent imaging of the patient's left atrial appendage. Anatomical measurements from the validated subsequent imaging are used to select or identify a left atrial appendage closure device, for example, for the treatment of atrial fibrillation patients.