Left atrial appendage occluder with double-barb structure

Abstract

The utility model discloses a left atrial appendage occluder with a double-barb structure, which comprises a plurality of first rod bodies and second rod bodies for occluding meshes by the occluder, the inclination directions of the first rod bodies and the second rod bodies are opposite, and along the circumferential direction of the left atrial appendage occluder, each first rod body is staggered with two second rod bodies adjacent to the first rod body in the inclination direction. Crossed nodes at different circumferential positions are formed at the staggered positions, barbs are arranged on the corresponding crossed nodes at uniform intervals in the circumferential direction of the left auricle plugging device, and a double-row barb structure is formed; according to the left atrial appendage occluder, the double rows of barb structures are arranged at the cross nodes, the two rows of barbs are staggered in the circumferential direction of the left atrial appendage occluder, the anatomical variability of the left atrial appendage is fully considered, the barbs can be better embedded into the inner wall of the left atrial appendage, the fixing effect is enhanced, and the displacement risk is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to left auricle plugging ware technical field, concretely relates to a kind of left auricle plugging ware of double barb structure. BACKGROUND

[0002] In the technical field of left auricle plugging ware, there are various designs and technical solutions for preventing and treating thrombosis related to left auricle. The existing plugging ware generally includes the following types:

[0003] 1. Umbrella-shaped plugging ware: this design is usually composed of a group of expandable umbrella-shaped structures, which is sent into left auricle through catheter and expanded in left auricle to plug its opening. The design of umbrella-shaped plugging ware aims to cover the inner wall of left auricle with umbrella-shaped mesh or membrane to prevent the release of thrombus.

[0004] 2. Ring-shaped plugging ware: ring-shaped plugging ware usually has a circular ring structure, which is plugged at the opening of left auricle through ring-shaped design. This design of plugging ware forms a fixed ring-shaped barrier in left auricle to prevent thrombus from being released from left auricle.

[0005] 3. Balloon plugging ware: balloon plugging ware adopts inflatable balloon structure, which is inflated after being sent into left auricle through catheter to form a balloon to plug left auricle. This design forms a plugging barrier in left auricle by the inflation of air bag.

[0006] These plugging wares in the prior art are mainly made of nickel-titanium alloy or other biocompatible materials, which have certain elasticity and shape memory characteristics, and are used to expand and fix in left auricle. Although these plugging wares have certain effect in plugging left auricle, there are still some deficiencies.

[0007] Many existing plugging wares are not fixed firmly in left auricle, and are prone to positional deviation or falling off. This instability can cause the plugging ware to fail to effectively plug left auricle in actual application, thereby increasing the risk of thrombus escape; the surface treatment and anticoagulation design of the plugging ware are usually insufficient, which can cause blood to coagulate easily on the surface of the plugging ware. This can increase the risk of thrombosis after operation, thereby affecting the safety of patients. INVENTION CONTENTS

[0008] Technical purpose: in view of the deficiencies of existing left auricle plugging ware, the utility model discloses a left auricle plugging ware with double barb structure.

[0009] Technical scheme: in order to achieve the above technical purpose, the utility model adopts the following technical scheme:

[0010] A left atrial appendage occluder with double barb structure comprises a plurality of first rods and second rods for occluding the mesh of the occluder, the first rods and the second rods are opposite in the direction of inclination, and each first rod is staggered with two second rods adjacent to the direction of inclination in the circumferential direction of the left atrial appendage occluder, forming cross nodes at different circumferential positions, and the barbs are arranged on the corresponding cross nodes in uniform intervals in the circumferential direction of the left atrial appendage occluder, forming a double-row barb structure.

[0011] Preferably, the end portions of the first rods and the second rods adjacent to each other are connected by a connecting rod after being gathered, the connecting rod is connected with the fixed end and the closing end of the corresponding left atrial appendage occluder, and a complete occluder structure is formed.

[0012] Preferably, the end portion of the connecting rod at the closing end of the left atrial appendage occluder adopts an F-shaped structure, a clamping block is arranged on the side away from the closing end and is butted against another connecting rod adjacent thereto, and when closing, the clamping block is embedded in the opening of the F-shaped structure and is locked and fixed by the closing ring arranged at the closing end.

[0013] Preferably, the left atrial appendage occluder is provided with an anticoagulant coating film outside the mesh structure formed by the first rods and the second rods, the end portion of the anticoagulant coating film is fixed to the fixed end of the left atrial appendage occluder and covers the outer periphery of the left atrial appendage occluder.

[0014] Beneficial effects: The left atrial appendage occluder with double barb structure has the following beneficial effects:

[0015] 1. The barbs are arranged at the cross nodes to form a double-row barb structure, and the two rows of barbs are staggered in the circumferential direction of the left atrial appendage occluder, fully considering the anatomical variability of the left atrial appendage, the barbs can be better embedded into the inner wall of the left atrial appendage, the fixing effect is enhanced, and the risk of displacement is reduced.

[0016] 2. The outer anticoagulant coating film is coated on the surface of the left atrial appendage occluder to reduce the coagulation of blood on the surface of the occluder and reduce the risk of postoperative thrombosis.

[0017] 3. The end portion of the connecting rod close to the closing end adopts an F-shaped structure, which optimizes the closing process of the occluder and makes the closing in the left atrial appendage more accurate and effective; this design ensures that the occluder can be better closed after being deployed, thereby improving the stability and adaptability of the occluder and improving the overall occlusion effect. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the description of the embodiments or the prior art will be briefly introduced.

[0019] Fig. 1 It is the whole structure diagram of left auricle plugging device of the utility model;

[0020] Fig. 2 It is the setting diagram of anti-coagulation coating of the utility model left auricle plugging device;

[0021] Fig. 3 It is the end structure diagram of connecting rod of the utility model;

[0022] Wherein, 1 - first rod body, 2 - second rod body, 3 - cross node, 4 - barb, 5 - connecting rod, 6 - clamping block, 7 - close ring, 8 - anti-coagulation coating. DETAILED DESCRIPTION

[0023] One or more specific embodiments of the present disclosure will now be described in detail below. Each of the following embodiments and examples is provided by way of explanation of the apparatus, systems, and materials of the present disclosure, and is not meant to limit the present disclosure. For example, the method steps described herein can be performed in a different order than the order described herein. Further, the described embodiments and examples are provided as examples only and are not meant to limit the scope of the present disclosure. Indeed, many modifications and variations to the examples described herein will be apparent to those of ordinary skill in the art from the teachings of the present disclosure, which is illustrated by the following non-limiting examples. For example, features described as taking a certain form in one embodiment can be incorporated into another embodiment in the same form or a different form. It is therefore contemplated to cover any and all modifications and variations of this disclosure that fall within the scope of the appended claims and their equivalents. Other objects, features, and aspects of the present disclosure are disclosed in or are apparent from the following detailed description of the present disclosure.

[0024] As Figs. 1-3 The utility model discloses a double barb structure left auricle plugging device, including a plurality of first rod body 1 and second rod body 2 for the plugging net hole of plugging device, the oblique direction of first rod body 1 and second rod body 2 is opposite, along the circumferential direction of left auricle plugging device, every first rod body 1 and the two second rod body 2 of the immediate vicinity of oblique direction are staggered, and the cross node 3 in different circumferential position is formed at the staggered place, according to the even interval on the corresponding cross node 3, sets up barb 4 in the circumferential direction of left auricle plugging device, forms double row barb structure, utilizes the staggered design of double row barb, fully considers the anatomical variability of left auricle, improves the fixed effect to plugging device.

[0025] Meanwhile, the left atrial appendage occluder needs to set enough rod bodies to ensure that the formed mesh hole can block thrombus, and needs to reduce the size of the closing end as much as possible to avoid affecting blood circulation, for this purpose, the end of the first rod body 1 and the second rod body 2 adjacent to the end are gathered and connected through the connecting rod 5, the connecting rod 5 is connected with the corresponding left atrial appendage occluder fixed end and closing end, a complete occluder structure is formed, the number of connecting rods connected with the closing end of the left atrial appendage occluder is reduced, so that the closing size is reduced; and the adjacent connecting rods can also gather the end again, can gather step by step, reduce the number of connecting rods connected with the closing end, the size is reduced by changing the number of connecting rods needing to be closed.

[0026] After the number of connecting rods is determined, the spacing of adjacent connecting rods when being closed will also affect the final closing size, for this purpose, the end of the connecting rod 5 at the closing end of the left atrial appendage occluder adopts an F-shaped structure, and a clamping block 6 is arranged on the side away from the closing end and is connected with the adjacent connecting rod 5, when closing, the clamping block 6 is embedded in the opening of the F-shaped structure and is locked and fixed by the closing ring 7 arranged at the closing end; the F-shaped structure is adopted, mainly for optimizing the closing process of the occluder, effectively improving the closing effect of the occluder in the left atrial appendage, so that the occluder can better fit the left atrial appendage wall, and ensure that the occluder can be more stably fixed after being unfolded, thereby improving the overall adaptability and occlusion effect.

[0027] In addition, the left atrial appendage occluder of the utility model also sets an anticoagulation coating 8 outside the mesh structure formed by the first rod body 1 and the second rod body 2, the end of the anticoagulation coating 8 is fixed with the fixed end of the left atrial appendage occluder and is wrapped around the outer periphery of the left atrial appendage occluder; the anticoagulation coating 8 adopts special materials, such as polymer coating, which effectively reduces the coagulation of blood on the surface of the occluder and reduces the risk of thrombosis after operation.

[0028] The occluder can realize higher efficiency and quality guarantee in the manufacturing and assembly process; the function and stability of the occluder are significantly improved, and more reliable treatment options are provided for patients; the performance and safety of the occluder are significantly enhanced, and the treatment effect of patients with atrial fibrillation can be significantly improved.

Claims

1. A left atrial appendage occlusion device with a double barbed structure, characterized in that, It includes several first rods (1) and second rods (2) for sealing the mesh of the occluder. The first rods (1) and second rods (2) are inclined in opposite directions. Along the circumferential direction of the left atrial appendage occluder, each first rod (1) is intersected with two second rods (2) that are adjacent in the inclined direction, forming a cross node (3) at different circumferential positions at the intersection. In the circumferential direction of the left atrial appendage occluder, barbs (4) are set on the corresponding cross nodes (3) at uniform intervals to form a double-row barb structure.

2. The left atrial appendage occlusion device with a double barbed structure according to claim 1, characterized in that, The ends of the first rod (1) and the second rod (2) that are adjacent to each other are connected by a connecting rod (5). The connecting rod (5) is connected to the corresponding left atrial appendage occluder fixed end and the closing end to form a complete occluder structure.

3. The left atrial appendage occlusion device with a double barbed structure according to claim 1, characterized in that, The end of the connecting rod (5) located at the closing end of the left atrial appendage occluder adopts an F-shaped structure, and a locking block (6) is provided on the side opposite to the opening to connect with the adjacent connecting rod (5). When closing, the locking block (6) is embedded in the opening of the F-shaped structure and locked and fixed by the closing ring (7) set at the closing end.

4. The left atrial appendage occlusion device with a double barbed structure according to claim 1, characterized in that, The left atrial appendage occluder is provided with an anticoagulant coating (8) on the outside of the mesh structure formed by the first rod (1) and the second rod (2). The end of the anticoagulant coating (8) is fixed to the fixed end of the left atrial appendage occluder and covers the outer periphery of the left atrial appendage occluder.

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