Left auricle plugging device and left auricle plugging device

Abstract

The utility model provides a left auricle plugging device and a left auricle plugging device. The left atrial appendage occluder comprises a fixed disc; the first end of the plugging disc is provided with a first connecting piece, the first connecting piece is provided with a first threaded section, the second end of the plugging disc is provided with a second connecting piece, the second connecting piece is provided with a second threaded section and used for being in threaded connection with a conveying steel cable of the left auricle plugging device, and the first threaded section and the second threaded section are opposite in rotating direction; the two ends of the adjusting piece are connected with the fixing disc and the plugging disc respectively, a first connecting part is arranged at the end, close to the plugging disc, of the adjusting piece, and the first connecting part is provided with a third threaded section, so that the adjusting piece is in threaded connection with the first connecting piece through the first threaded section and the third threaded section. The left atrial appendage plugging device solves the problem that in the prior art, a left atrial appendage plugging device is poor in applicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, specifically, relate to a left auricle plugging device and left auricle plugging device. BACKGROUND

[0002] At present, all the left auricle plugging devices on the market are mostly cutting stents of single inner plug formed by laser cutting and heat treatment of metal pipe material, or left auricle plugging device stents composed of different types of cutting stents through weaving and heat treatment of metal wire material, or intermediate welding, the intermediate connecting part is all laser welded connection, which is a non-movable connection, the implant and the delivery system are connected through threads, and the connection method used by the sealing disc and the fixing disc of all the left auricle plugging devices on the market is mostly laser welding, which is a non-detachable and non-adjustable design structure.

[0003] However, the existing non-detachable left auricle plugging device cannot effectively plug the left auricle opening in the clinical process, residual leakage occurs, and because the left auricle is irregular, the specification of the left auricle plugging device cover implanted after the implantation cannot be completely suitable, the sealing disc is too large to cause abrasion of the pulmonary vein and the mitral valve, and the sealing disc is too small to form a residual cavity that is not easy to endothelialize, and the product structure of the left auricle plugging device is all non-detachable and free assembly, which cannot select the appropriate left auricle product for the patient according to the actual clinical needs, and cannot realize direction adjustment and height adjustment on this basis, greatly affecting the applicability of the left auricle plugging device.

[0004] As known from the above, the applicability of the left auricle plugging device in the prior art is poor. INVENTION CONTENTS

[0005] The main purpose of the utility model is to provide a left auricle plugging device and a left auricle plugging device to solve the problem of poor applicability of the left auricle plugging device in the prior art.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a left auricle plugging device is provided, which comprises: a fixing disc; a sealing disc, the first end of the sealing disc is provided with a first connecting piece, the first connecting piece has a first threaded section, the second end of the sealing disc is provided with a second connecting piece, the second connecting piece has a second threaded section, which is used for threaded connection with the delivery cable of the left auricle plugging device, and the rotation directions of the first threaded section and the second threaded section are opposite; an adjusting piece, the two ends of the adjusting piece are connected with the fixing disc and the sealing disc respectively, and the end of the adjusting piece close to the sealing disc is provided with a first connecting part, the first connecting part has a third threaded section, so that the adjusting piece and the first connecting piece are threaded connected through the first threaded section and the third threaded section.

[0007] Further, the adjusting member is provided with a second connecting part at one end close to the fixing disc, and the second connecting part is rotatably connected with the fixing disc.

[0008] Further, the fixing disc is provided with a third connecting part, the third connecting part has a receiving cavity, and the second connecting part has a ball head structure movably arranged in the receiving cavity.

[0009] Further, the fixing disc is provided with a third connecting part, and the third connecting part is detachably connected with the adjusting member.

[0010] Further, the third connecting part is clamped with the adjusting member.

[0011] Further, the first connecting part is a threaded stud, and the second connecting part is a nut.

[0012] Further, the plugging disc has a trapezoidal structure in cross section, and the diameter of the plugging disc gradually decreases along the direction close to the fixing disc.

[0013] According to another aspect of the utility model, a left atrial appendage plugging device is provided, which comprises the left atrial appendage plugging device.

[0014] Further, the left atrial appendage plugging device further comprises a conveying assembly, and the left atrial appendage plugging device is detachably connected with the conveying assembly.

[0015] Further, the conveying assembly comprises a conveying steel cable and a conveying sheath pipe, the conveying steel cable is threadedly connected with the second connecting part of the left atrial appendage plugging device, and the left atrial appendage plugging device is accommodated in the conveying sheath pipe.

[0016] The technical scheme of the utility model discloses left auricle plugging ware including fixed disc, plugging disc and adjusting part, the first end of plugging disc is provided with first connecting piece, first connecting piece has first thread section, the second end of plugging disc is provided with second connecting piece, second connecting piece has second thread section, is used for with the conveying steel cable of left auricle plugging device screw connection, and the rotation direction of first thread section and second thread section is opposite, the both ends of adjusting part are connected with fixed disc and plugging disc respectively, and the end of adjusting part close to plugging disc is provided with first connecting part, first connecting part has third thread section, to make adjusting part and first connecting piece through first thread section and third thread section screw connection, by setting up first thread section and second thread section with different rotation direction on first connecting piece and second connecting piece of plugging disc both ends respectively, utilize adjusting part to connect fixed disc and plugging disc, the end of adjusting part is provided with first connecting piece with third thread section, first connecting piece is screw connection with first connecting part, the conveying steel cable of left auricle plugging device is adapted with second thread section of plugging disc, and the screwing direction of conveying steel cable and plugging disc screw connection is the loosening direction of plugging disc and adjusting part, when using, even if the connection of conveying steel cable and second connecting piece is cancelled, also can not cause the loosening of adjusting part and first connecting piece, and after sending left auricle plugging ware to left auricle, according to the depth of left auricle, utilize conveying steel cable to adjust the depth of first connecting piece entering adjusting part, thereby realize the height of adjusting left auricle plugging ware, greatly improve the applicability of left auricle plugging ware, solve the problem of poor applicability of left auricle plugging ware in prior art. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which form a part of this specification, are included to provide a further understanding of the present application and are incorporated herein by reference. The embodiments disclosed in the drawings are illustrative of the present application and are not meant to limit the present application as well as the explanation is used to explain the present application and does not constitute improper limitation to the present application. In the drawings:

[0018] Figure 1 Fig. 1 shows the structure schematic diagram of left auricle plugging ware in one specific embodiment of the utility model;

[0019] Figure 2 Fig. 2 shows the structure schematic diagram of plugging disc in one specific embodiment of the utility model;

[0020] Figure 3 Fig. 3 shows the structure schematic diagram of adjusting part in one specific embodiment of the utility model.

[0021] Wherein, the above-mentioned drawing includes the following sign:

[0022] 10, fixed disc; 11, third connecting piece; 20, plugging disc; 21, first connecting piece; 22, second connecting piece; 30, adjusting part; 31, first connecting part; 32, second connecting part. DETAILED DESCRIPTION

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0025] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0026] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0027] To address the poor applicability of existing left atrial appendage occluders, this invention provides a left atrial appendage occluder and a left atrial appendage occlusion device. The left atrial appendage occlusion device described below includes the left atrial appendage occluder described below.

[0028] like Figures 1 to 3 As shown, the left atrial appendage occlusion device includes a fixed plate 10, an occlusion plate 20, and an adjusting member 30. A first connecting member 21 with a first threaded section is provided at the first end of the occlusion plate 20. A second connecting member 22 with a second threaded section is provided at the second end of the occlusion plate 20 for threaded connection with the delivery cable of the left atrial appendage occlusion device. The first and second threaded sections have opposite directions of rotation. Both ends of the adjusting member 30 are connected to the fixed plate 10 and the occlusion plate 20, respectively. A first connecting portion 31 with a third threaded section is provided at the end of the adjusting member 30 closest to the occlusion plate 20, so that the adjusting member 30 and the first connecting member 21 are threadedly connected via the first and third threaded sections.

[0029] By setting the first connecting piece 21 and the second connecting piece 22 at two ends of the blocking disc 20 with the first threaded section and the second threaded section with different screw directions respectively, the adjusting member 30 is used to connect and fix the disc 10 and the blocking disc 20, one end of the adjusting member 30 is provided with the first connecting part 31 with the third threaded section, the first connecting part 31 is threadedly connected with the first connecting piece 21, the delivery steel cable of the left atrial appendage blocking device is matched with the second threaded section of the blocking disc 20, the delivery steel cable is threadedly connected with the blocking disc 20 in the tightening direction, and even if the connection between the delivery steel cable and the second connecting piece 22 is released, the connection between the adjusting member 30 and the first connecting piece 21 will not be loosened, and meanwhile, after the left atrial appendage blocking device is delivered to the left atrial appendage, the depth of the first connecting piece 21 into the adjusting member 30 can be adjusted according to the depth of the left atrial appendage by using the delivery steel cable, so as to adjust the height of the left atrial appendage blocking device, and the applicability of the left atrial appendage blocking device is greatly improved.

[0030] Specifically, since the tightening direction of the delivery steel cable threadedly connected with the blocking disc 20 is the loosening direction of the blocking disc 20 and the adjusting member 30, in the initial state, the first connecting piece 21 and the adjusting member 30 are in the tightened state, that is, the left atrial appendage blocking device is in the state with the minimum height, according to the actual size of the left atrial appendage, the delivery steel cable is continuously tightened, and the blocking disc 20 and the first connecting piece 21 are driven to rotate, so as to loosen the first connecting piece 21, and gradually increase the height of the left atrial appendage blocking device until the appropriate height is reached. At this time, the delivery steel cable is loosened, so that the delivery steel cable is separated from the blocking disc 20, and at this time, the blocking disc 20 will not be affected or will be affected by the very small rotating force of the delivery steel cable, so as not to affect the connection state between the first connecting piece 21 and the adjusting member 30.

[0031] As shown in Figure 1 and Figure 3 , the adjusting member 30 is provided with the second connecting part 32 close to the disc 10, and the second connecting part 32 is rotatably connected with the disc 10.

[0032] As shown in Figure 1 , the disc 10 is provided with the third connecting piece 11 with the accommodating cavity, and the second connecting part 32 has the ball head structure movably arranged in the accommodating cavity.

[0033] Specifically, the fixing disc 10 is provided with a plurality of inwardly bent hook-shaped structures, and a barb is arranged on any one of the hook-shaped structures. The fixing disc 10 is fixed by connecting the barb with the pectinate muscle. The non-hook ends of the plurality of hook-shaped structures converge at one position and are connected with the third connecting piece 11. The third connecting piece 11 is in a cylindrical structure, and the ends of the plurality of hook-shaped structures are welded to the third connecting piece 11. The accommodating cavity of the third connecting piece 11 comprises an accommodating section and a limiting section which are sequentially communicated. The ball head structure of the second connecting part 32 has a certain elasticity. During installation, the compressed ball head structure is compressed when passing through the limiting section and then reaches the accommodating section. It can be understood that the opening diameter of the limiting section is smaller than the diameter of the ball-shaped structure, so as to realize the limiting of the second connecting part 32 by the limiting section.

[0034] Further, the ball head structure is matched with the accommodating section. The adjusting part 30 further comprises a transition section. The first connecting part 31, the transition section and the second connecting part 32 are sequentially connected. The diameter of the transition section is smaller than the diameter of the ball head structure. Through the above arrangement, universal adjustment between the third connecting piece 11 and the ball head structure is realized, that is, universal adjustment between the occlusion disc 20 and the fixing disc 10 is realized, so as to adaptively adjust the angle between the occlusion disc 20 and the fixing disc 10 according to different shapes of the left atrial appendage. Further, after the left atrial appendage occluder is implanted in the left atrial appendage and fixed by the barb, the axis of the transition section can be deviated from the axis of the third connecting piece 11 by 45 degrees according to the fixed position, so as to drive the occlusion disc 20 to adaptively adjust by 45 degrees of the internal structure to make the occlusion disc 20 fit the auricle wall, so as to achieve the occlusion effect of the product and reduce the occurrence of residual leakage.

[0035] In an un-disclosed embodiment of the present application, the fixing disc 10 is provided with the third connecting piece 11, and the third connecting piece 11 is detachably connected with the adjusting part 30.

[0036] Specifically, the adjusting part 30 is connected and fixed with the occlusion disc 20, and the third connecting piece 11 is connected and fixed with the fixing disc 10. The fixing disc 10 and the occlusion disc 20 are detachably arranged by detachably connecting the third connecting piece 11 with the adjusting part 30. Before assembly and use, appropriate fixing disc 10 and occlusion disc 20 can be selected, and after assembly and delivery, the distance between the occlusion disc 20 and the fixing disc 10 can be adjusted by the delivery steel cable.

[0037] In the un-disclosed embodiment, the third connecting piece 11 is clamped with the adjusting part 30.

[0038] Specifically, the third connecting piece 11 is provided with a buckle, and the adjusting part 30 is provided with a clamping groove, or the adjusting part 30 is provided with a buckle, and the third connecting piece 11 is provided with a clamping groove. The buckle and the clamping groove realize clamping. Further, the connection mode of the inner buckle or the connection mode of the rotating buckle can be adopted.

[0039] In the embodiment, the first connecting member 21 is a stud, and the second connecting member 22 is a nut. That is, the first threaded segment is an external thread, and correspondingly, the third threaded segment is an internal thread; the second threaded segment is an internal thread to adapt to the external thread of the delivery steel cable. Of course, the first connecting member 21 can also be a nut, and the second connecting member 22 can be a stud, that is, the first threaded segment is an internal thread, and correspondingly, the third threaded segment is an external thread, and the first connecting portion 31 extends into the first connecting member 21; the second threaded segment is an external thread, and at this time, the distal end of the delivery steel cable has an internal thread to be threadedly connected with the second connecting member 22.

[0040] In the embodiment, the cross section of the occlusion disc 20 is a trapezoidal structure, and the diameter of the occlusion disc 20 gradually decreases along the direction close to the fixing disc 10.

[0041] Specifically, in actual use, the occlusion disc 20 is pulled by the fixed fixing disc 10 after being fixed, so that the occlusion disc 20 is attached to the left atrial appendage, the diameter of the occlusion disc 20 gradually decreases along the left atrial appendage, the occlusion disc 20 forms a plug-like structure, the smaller diameter end of the plug is close to the bottom of the left atrial appendage, and the larger diameter end is attached to the opening of the left atrial appendage. Optionally, a flow resistance film is arranged on the occlusion disc 20, so that the outer disc of the occlusion disc and the left atrial appendage are flat and attached to the left atrial appendage, and do not protrude from the left atrial appendage, thereby reducing the risk of residual leakage and greatly improving the occlusion effect, and without any influence on the left superior pulmonary vein and the mitral valve.

[0042] Further, the base angle of the trapezoidal structure is 70° to 85°, and the height and the base angle are in a cooperative proportional relationship, so that the occlusion disc 20 forms an oval and a vertical body structure, and finally can be tightly attached to the inner wall of the left atrial appendage.

[0043] Further, during the operation, with the development of ablation and occlusion one-stop operation, the left atrial appendage opening part will have edema after ablation, and after the left atrial appendage occluder is implanted, new residual leakage and residual cavity will be formed as the left atrial appendage opening part subsides. Since the left atrial appendage occluder with the trapezoidal angle design has a flexible mesh tube, it can be more attached to the left atrial appendage opening part and will not form new residual cavity and residual leakage.

[0044] The utility model also provides a left atrial appendage occlusion device which comprises the above left atrial appendage occluder.

[0045] In the embodiment, the left atrial appendage occlusion device further comprises a delivery assembly, and the left atrial appendage occluder is detachably connected with the delivery assembly. The delivery assembly comprises a delivery steel cable and a delivery sheath. The delivery steel cable is threadedly connected with the second connecting member 22 of the left atrial appendage occluder. The left atrial appendage occluder is accommodated in the delivery sheath.

[0046] Specifically, the blocking disc 20 has a certain elasticity and can be retracted in the delivery sheath tube, and the plurality of hook-shaped structures of the fixing disc 10 can also be folded like petals towards the central axis of the third connecting piece 11. After selecting and connecting the blocking disc 20 and the fixing disc 10, and being delivered to the vicinity of the designated position by the delivery sheath tube, the left atrial appendage occluder is pushed out of the delivery sheath tube by operating the delivery steel cable. The fixing disc 10 is first stretched out of the delivery sheath tube, and the fixing disc 10 is made of a memory metal such as nickel-titanium alloy and restores to the original shape after being stretched out of the delivery sheath tube. At this time, the delivery sheath tube and the delivery steel cable are moved, so that the fixing disc 10 is connected to the pectinate muscle of the left atrial appendage through the barbs. Before releasing the blocking disc 20, the rotation direction of the delivery steel cable can be selected according to the specific situation of the left atrial appendage, the delivery steel cable is tightened to drive the blocking disc 20 away from the adjusting piece 30, and the range can be within 2mm-6mm, or the delivery steel cable is loosened, and then the delivery sheath tube and the delivery steel cable are withdrawn, and the release of the left atrial appendage occluder is completed.

[0047] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects: through the setting of the left atrial appendage occluder including the fixing disc 10, the blocking disc 20 and the adjusting piece 30, the first end of the blocking disc 20 is provided with the first connecting piece 21, the first connecting piece 21 has the first threaded section, the second end of the blocking disc 20 is provided with the second connecting piece 22, the second connecting piece 22 has the second threaded section, is used for being threadedly connected with the delivery steel cable of the left atrial appendage occlusion device, and the first threaded section and the second threaded section are opposite in rotation direction, the two ends of the adjusting piece 30 are connected with the fixing disc 10 and the blocking disc 20 respectively, and the end of the adjusting piece 30 close to the blocking disc 20 is provided with the first connecting part 31, the first connecting piece 21 has the third threaded section, so that the adjusting piece 30 is threadedly connected with the first connecting piece 21 through the first threaded section and the third threaded section, by setting the first threaded section and the second threaded section with different rotation directions on the first connecting piece 21 and the second connecting piece 22 at the two ends of the blocking disc 20, the adjusting piece 30 is used for connecting the fixing disc 10 and the blocking disc 20, the end of the adjusting piece 30 is provided with the first connecting part 31 with the third threaded section, the first connecting part 31 is threadedly connected with the first connecting piece 21, the delivery steel cable of the left atrial appendage occlusion device is matched with the second threaded section of the blocking disc 20, the tightening direction of the delivery steel cable and the blocking disc 20 is the loosening direction of the blocking disc 20 and the adjusting piece 30, and when in use, even if the connection between the delivery steel cable and the second connecting piece 22 is released, the connection between the adjusting piece 30 and the first connecting piece 21 will not be loose, and at the same time, after the fixing disc 10 is sent to the left atrial appendage, the depth of the first connecting piece 21 into the adjusting piece 30 can be adjusted by the delivery steel cable according to the depth of the left atrial appendage, so that the height of the left atrial appendage occluder is adjusted.

[0048] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof.

[0049] It should be noted that the terms "first", "second", and the like, herein do not necessarily have an either chronological or spatial relation. Rather, these terms can be used solely to distinguish a certain specific entity from another entity. It should be understood that the terms so used in the description are interchangeable under appropriate circumstances and embodiments of the application described herein are capable of operating in other sequences than described or illustrated herein.

[0050] The preferred embodiments of the present application have been described above with the specific embodiments. The present application is not limited to the above embodiments. It will be appreciated by those skilled in the art that any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall fall within the scope of the present application.

Claims

1. A left atrial appendage occluder, characterized by, The device comprises: a fixing disc (10); a blocking disc (20), a first end of the blocking disc (20) is provided with a first connecting piece (21) having a first threaded section, a second end of the blocking disc (20) is provided with a second connecting piece (22) having a second threaded section for being threadedly connected with a delivery steel cable of a left atrial appendage blocking device, and the first threaded section and the second threaded section are in opposite directions; an adjusting piece (30), two ends of the adjusting piece (30) are connected with the fixing disc (10) and the blocking disc (20) respectively, and a first connecting part (31) having a third threaded section is arranged at an end of the adjusting piece (30) close to the blocking disc (20) to threadedly connect the adjusting piece (30) with the first connecting piece (21) through the first threaded section and the third threaded section.

2. The left atrial appendage occluder of claim 1, wherein, A second connecting part (32) is arranged at an end of the adjusting piece (30) close to the fixing disc (10), and the second connecting part (32) is rotatably connected with the fixing disc (10).

3. The LAA occluder according to claim 2, characterized in that The fixing disc (10) is provided with a third connecting piece (11) having a receiving cavity, and the second connecting part (32) has a ball head structure movably arranged in the receiving cavity.

4. The LAA occluder of claim 1, wherein, The fixing disc (10) is provided with a third connecting piece (11) detachably connected with the adjusting piece (30).

5. The LAA occluder according to claim 4, characterized in that The third connecting piece (11) is clamped with the adjusting piece (30).

6. The left atrial appendage closure device of any one of claims 1 to 5, wherein, The first connecting piece (21) is a threaded stud, and the second connecting piece (22) is a threaded nut.

7. The left atrial appendage closure device according to any one of claims 1 to 5, characterized in that The blocking disc (20) has a trapezoidal structure in cross section, and the diameter of the blocking disc (20) gradually decreases in a direction close to the fixing disc (10).

8. A left atrial appendage occlusion device, characterized by The device comprises the left atrial appendage blocking device according to any one of claims 1 to 7.

9. The left atrial appendage closure device of claim 8, wherein, The left atrial appendage blocking device further comprises a delivery assembly, and the left atrial appendage blocking device is detachably connected with the delivery assembly.

10. The left atrial appendage closure device of claim 9, wherein, The delivery assembly comprises: a delivery steel cable threadedly connected with the second connecting piece (22) of the left atrial appendage blocking device; a delivery sheath, and the left atrial appendage blocking device is accommodated in the delivery sheath.

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