Atrial Appendage Clip Delivery System

Abstract

The present invention discloses an atrial appendage clamp delivery system, which includes a fixed seat, a connecting rod, a handle device and a rotating mechanism, wherein the rotating mechanism at least includes: a first connecting part, a second connecting part, and a rotating shaft, wherein the first connecting part and the second connecting part are respectively provided with a first axial hole and a second axial hole, and the rotating shaft passes through the first axial hole and the second axial hole to movably connect the first connecting part and the second connecting part; the handle device is connected to the rear end of the connecting rod, the front end of the connecting rod is connected to the first connecting part, and the fixed seat is connected to the second connecting part. The present invention can conveniently switch the angle freely, is easy to operate, and reduces the difficulty of surgery.

Description

Technical Field

[0001] The invention belongs to the field of medical devices, and in particular relates to an atrial appendage clamp delivery system. Background Art

[0002] Atrial fibrillation is the most common arrhythmia in clinical practice, with symptoms of irregular heart beats. The incidence of atrial fibrillation in the general population is 0.5% to 1.5%. There are 33.5 million patients with atrial fibrillation worldwide, and about 8 million of them in my country. The risk of stroke in patients with atrial fibrillation is very high. In China, stroke is an important cause of death, and stroke caused by atrial fibrillation usually has more severe clinical manifestations, higher mortality, and is more likely to recur.

[0003] There are currently three main approaches to preventing stroke in patients with atrial fibrillation:

[0004] 1. Anticoagulant drugs, such as warfarin, but warfarin has a certain risk of bleeding and requires frequent monitoring. It has many contraindications and side effects, and its clinical application is difficult.

[0005] 2. Cardiac surgery to remove or ligate the left atrial appendage. However, this method has a low rate of complete closure of the left atrial appendage. Previous studies have shown that the success rate of complete removal of the left atrial appendage is at most about 80%, and the risk of surgery is relatively high.

[0006] 3. Block or close the left atrial appendage through instruments. This method is divided into percutaneous intracardiac left atrial appendage occlusion and cardiac surgical atrial appendage closure. Percutaneous intracardiac left atrial appendage occlusion has not been widely used in clinical practice due to its complex operation, high risk, and safety and effectiveness to be verified. Cardiac surgery or minimally invasive surgery to ligate the atrial appendage is currently a widely used treatment method. When using this method of treatment, an atrial appendage clamp delivery system is required. The current instruments on the market for ligating the left atrial appendage have defects in the structural design of the delivery system: the atrial appendage clamp delivery system cannot switch angles freely, the operation is inconvenient, the operation is relatively difficult, and it undoubtedly increases the operation time and risk. Summary of the invention

[0007] The purpose of the present invention is to provide an atrial appendage clamp delivery system, which can conveniently and freely switch the angle, is easy to operate, and reduces the difficulty of surgery.

[0008] The technical solution is as follows:

[0009] The auricle clamp delivery system includes a fixed seat, a connecting rod, a handle device and a rotating mechanism, wherein the rotating mechanism at least includes: a first connecting part, a second connecting part, and a rotating shaft, wherein the first connecting part and the second connecting part are respectively provided with a first axial hole and a second axial hole, and the rotating shaft passes through the first axial hole and the second axial hole to movably connect the first connecting part and the second connecting part; the handle device is connected to the rear end of the connecting rod, the front end of the connecting rod is connected to the first connecting part, and the fixed seat is connected to the second connecting part.

[0010] In one embodiment, there are two rotating mechanisms, the first connecting part of the first rotating mechanism is connected to the front end of the connecting rod, the second connecting part of the first rotating mechanism is connected to the first connecting part of the second rotating mechanism, and the second connecting part of the second connecting mechanism is connected to the fixed seat.

[0011] In one embodiment, the second connection portion of the first rotating mechanism and the first connection portion of the second rotating mechanism form an integrated adapter, and the axis of the first connection portion is perpendicular to the axis of the second connection portion.

[0012] In one embodiment, the first connecting portion has two first connecting ears, the second connecting portion has two second connecting ears, the first axial hole is arranged on the two first connecting ears, and the second axial hole is arranged on the two second connecting ears.

[0013] In one embodiment, the rotating shaft is a hollow structure, and its outer circumference is movably matched with the first axial hole on the first connecting part; a corresponding circumferential locking surface is provided between the rotating shaft and the second connecting part.

[0014] In one embodiment, the first end of the rotating shaft has a hexagonal outer plane, the second connecting portion has a hexagonal inner plane, and the circumferential locking surface is the hexagonal outer plane and the hexagonal inner plane.

[0015] In one embodiment, a circumferential position locking mechanism is provided between the first connecting portion and the second connecting portion.

[0016] In one embodiment, the circumferential position locking mechanism includes a first locking disk and a second locking disk. The first locking disk is circumferentially limited relative to the first connecting part, and the second locking disk is circumferentially limited relative to the second connecting part. Corresponding locking teeth are provided between the first locking disk and the second locking disk.

[0017] In one embodiment, a first positioning notch is provided on the first connecting portion, and a first positioning piece is provided on the first locking disk. When the first positioning piece is inserted into the first positioning notch, the first locking disk and the first connecting portion are circumferentially limited; a second positioning notch is provided on the second connecting portion, and a second positioning piece is provided on the second locking disk. When the second positioning piece is inserted into the second positioning notch, the second locking disk and the second connecting portion are circumferentially limited.

[0018] In one of the embodiments, a locking nut is further included. The end of the rotating shaft has a locking thread. The locking nut cooperates with the locking thread at the end of the rotating shaft and tightens the first connecting part, the second connecting part, and the circumferential position locking mechanism.

[0019] The technical solution provided by the present invention has the following advantages and effects:

[0020] The handle device of the atrial appendage clamp delivery system is used for holding, and its front end is connected to the connecting rod. After adopting the rotating mechanism, the angle between the fixing seat and the connecting rod can be adjusted by rotating between the first connecting part and the second connecting part, which makes the operation more convenient and reduces the difficulty and risk of the operation.

[0021] A first locking plate and a second locking plate are provided between the first connecting part and the second connecting part, and the first locking plate and the second locking plate can be used to circumferentially lock the angle between the first connecting part and the second connecting part, thereby reducing random shaking of the fixing seat relative to the connecting rod and improving its reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings herein show specific examples of the technical solutions described in the present invention, and together with the specific implementation methods, constitute a part of the specification, and are used to explain the technical solutions, principles and effects of the present invention.

[0023] Unless otherwise specified or defined, the same figure marks in different drawings represent the same or similar technical features, and the same or similar technical features may also be represented by different figure marks.

[0024] Figure 1 is a schematic diagram of the atrial appendage clamp delivery system of the present invention in a first state;

[0025] Figure 2 is a schematic diagram of the atrial appendage clamp delivery system of the present invention in a second state;

[0026] Figure 3 is a schematic diagram of the atrial appendage clamp delivery system of the present invention in the third state;

[0027] Figure 4 is a disassembled diagram of the atrial appendage clamp delivery system of the present invention;

[0028] Figure 5 It is a partial enlarged view of the rotating shaft;

[0029] Figure 6 It is a partial enlarged view of the locking nut;

[0030] Figure 7 It is a partial enlarged view of the extension rod;

[0031] Figure 8 It is a partial enlarged view of the adapter;

[0032] Fig. 9 It is a partial enlarged view of the first lock disk;

[0033] Fig.10 It is a partial enlarged view of the second lock disk;

[0034] Description of reference numerals:

[0035] 10. Fixed seat, 20. Connecting rod, 21. Rotary tube, 22. Extension rod, 30. Handle device, 31. Push rod, 40. Rotating mechanism, 41. First connecting part, 411. First axial hole, 412. First connecting ear, 413. First positioning gap, 42. Second connecting part, 421. Second axial hole, 422. Second connecting ear, 423. Second positioning gap, 424. Sink, 431. Rotating shaft, 4311. Locking thread, 432. Locking nut, 4321. Adjusting groove, 44. Circumferential locking surface, 45. First locking disk, 451. First locking tooth, 452. First positioning plate, 46. Second locking disk, 461. Second locking tooth, 462. Second positioning plate, 48. Adapter. DETAILED DESCRIPTION

[0036] In order to facilitate the understanding of the present invention, specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

[0037] Unless otherwise specified or defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art. In the context of the actual scenario of the technical solution of the present invention, all technical and scientific terms used herein may also have the meaning corresponding to the purpose of implementing the technical solution of the present invention.

[0038] Unless otherwise specified or defined, the "first, second..." used in this article is merely used to distinguish names and does not represent a specific quantity or order.

[0039] Unless specifically stated or defined otherwise, the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0040] It should be noted that when a component is considered to be "fixed to" another component, it can be directly fixed to the other component or there can be a central component; when an component is considered to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time; when an component is considered to be "installed on" another component, it can be directly installed on the other component or there can be a central component at the same time. When an component is considered to be "set on" another component, it can be directly set on the other component or there can be a central component at the same time.

[0041] Unless otherwise specified or defined, the “said” and “the” used in this document refer to the technical features or technical contents mentioned or described before the corresponding position, and the technical features or technical contents may be the same as or similar to the technical features or technical contents mentioned therein.

[0042] Undoubtedly, technical contents or technical features that are contrary to the purpose of the present invention or are obviously contradictory should be excluded.

[0043] like Figures 1 to 10 As shown, the atrial appendage clamp delivery system includes a fixing seat 10, a connecting rod 20, a handle device 30 and two rotating mechanisms 40. The rotating mechanism 40 includes: a first connecting portion 41, a second connecting portion 42, and a rotating shaft 431. The first connecting portion 41 and the second connecting portion 42 are respectively provided with a first axial hole 411 and a second axial hole 421. The second connecting portion 42 of the first rotating mechanism and the first connecting portion 41 of the second rotating mechanism form an integrated adapter 48, and the axis of the first connecting portion 41 is perpendicular to the axis of the second connecting portion 42. The connection structure of the atrial appendage clamp delivery system is as follows:

[0044] like Figure 2 , Figure 3 and Figure 4 As shown and combined with other views, the handle device 30 is used for holding operation, and a push rod 31 is provided on the handle device 30. The handle device 30 is connected to the rear end of the connecting rod 20 and is covered with a spiral tube 21. The angle between the handle device 30 and the connecting rod 20 can be adjusted and tightened or loosened through the spiral tube 21. The front end of the connecting rod 20 is connected to the extension rod 22. The extension rod 22 is provided with the first connecting portion 41, and the first connecting portion 41 and the second connecting portion 42 of the adapter 48 are movably connected through the rotating shaft 431. The first connecting portion 41 of the adapter 48 and the second connecting portion 42 on the fixing seat 10 are also movably connected through the rotating shaft 431 to realize rotation in two directions, as shown in FIG. Figure 2 As shown, this figure is a schematic diagram of the atrial appendage clamp delivery system after being rotated by the first rotating mechanism; Figure 3 As shown, this figure is a schematic diagram of the atrial appendage clamp delivery system after being rotated by the second rotating mechanism.

[0045] After the atrial appendage clamp delivery system adopts the rotating mechanism 40, the angle between the fixing seat 10 and the connecting rod 20 can be adjusted by rotating the first connecting part 41 and the second connecting part 42, which makes the operation more convenient and reduces the difficulty and risk of the operation. In this embodiment, there are two rotating mechanisms 40, and the rotating directions are perpendicular to each other, so that the adjustment of two directional dimensions can be achieved.

[0046] like Figures 4 to 10 As shown, the first connecting portion 41 has two first connecting ears 412, the second connecting portion 42 has two second connecting ears 422, the first axial hole 411 is provided on the two first connecting ears 412, the second axial hole 421 is provided on the two second connecting ears 422, the two first connecting ears 412 are located between the two second connecting ears 422, and a circumferential position locking mechanism is provided between the first connecting portion 41 and the second connecting portion 42, that is, the circumferential position locking mechanism includes a first locking disk 45 and a second locking disk 46, a first positioning notch 413 is provided on the first connecting portion 41, and the first locking disk 4 5 is provided with a first positioning piece 452, and after the first positioning piece 452 is snapped into the first positioning notch 413, the first locking disk 45 and the first connecting portion 41 are circumferentially limited; the second connecting portion 42 is provided with a second positioning notch 423, and the second locking disk 46 is provided with a second positioning piece 462, and after the second positioning piece 462 is snapped into the second positioning notch 423, the second locking disk 46 and the second connecting portion 42 are circumferentially limited. A plurality of first locking teeth 451 are arranged along a circumferential circle on the first locking disk 45, and two second locking teeth 461 are arranged along the circumferential direction on the second locking disk 46, and the first locking teeth 451 are opposite to the second locking teeth 461.

[0047] The first connection part 41 and the second connection part 42 are locked in the circumferential direction by the first locking disk 45 and the second locking disk 46. When the rotation is forced, the rotation force overcomes the elastic deformation resistance between the first locking disk 45 and the second locking disk 46 to produce relative rotation. When the rotation is in place and released, the first connection part 41 and the second connection part 42 are locked by the first locking disk 45 and the second locking disk 46 and will not produce circumferential rotation, thereby reducing the random shaking of the fixed seat 10 relative to the connecting rod 20 and improving its reliability; further, the first connection part 41 has two first connecting ears 412, and the second connection part 42 has two second connecting ears 422, so that the first connection part 41 and the second connection part 42 can both produce elastic deformation in the axial direction of the rotating shaft 431, thereby improving the toughness of the rotating mechanism 40 and also increasing the space for elastic deformation of the first locking disk 45 and the second locking disk 46. The first locking teeth 451 on the first locking disk 45 are a full circle, which can theoretically achieve 360-degree angle locking, while the second locking disk 46 is only provided with two second locking teeth 461 at opposite positions, which can reduce the resistance during rotation, and the two second locking teeth 461 are evenly stressed during locking.

[0048] The rotating shaft 431 adopts a hollow structure to further increase the damping when the first connecting part 41 and the second connecting part 42 rotate, and its outer circumference is movably matched with the first shaft hole 411 on the first connecting part 41; a corresponding circumferential locking surface 44 is provided between the rotating shaft 431 and the second connecting part 42 (the first end of the rotating shaft 431 has a hexagonal outer plane, the second connecting part 42 has a hexagonal inner plane, and the circumferential locking surface 44 is the hexagonal outer plane and the hexagonal outer inner plane), and the end of the rotating shaft 431 has a locking thread 4311, and the locking nut 432 cooperates with the locking thread 4311 at the end of the rotating shaft 431, and tightens the first connecting part 41, the second connecting part 42, and the circumferential position locking mechanism.

[0049] The circumferential locking surface 44 can prevent the rotating shaft 431 from rotating relative to the second connecting portion 42, and prevent the rotating shaft 431 from falling off due to long-term use. The first connecting portion 41, the second connecting portion 42, and the circumferential position locking mechanism can be compressed by the locking nut 432, and the circumferential locking force between the first locking disk 45 and the second locking disk 46 can be adjusted. An adjustment groove 4321 is provided at the tail of the locking nut 432, and the locking nut 432 is rotated and adjusted through the adjustment groove 4321.

[0050] It can be understood that, according to the requirements of the rotation direction, the number of the rotating mechanisms 40 can be three; to save costs or achieve adjustment in one direction, only one rotating mechanism can be used; the first locking disk 45 and the second locking disk 46 are not strictly limited to the number of this embodiment.

[0051] The purpose of the above embodiments is to exemplarily reproduce and deduce the technical solution of the present invention, and to fully describe the technical solution, purpose and effect of the present invention. Its purpose is to make the public understand the disclosed content of the present invention more thoroughly and comprehensively, and it does not limit the protection scope of the present invention.

[0052] The above embodiments are not exhaustive enumerations of the present invention, and there may be multiple other implementations not listed. Any replacement and improvement made without violating the concept of the present invention shall fall within the protection scope of the present invention.

Claims

1. Atrial appendage clamp delivery system, characterized in that: The invention comprises a fixing seat, a connecting rod, a handle device and a rotating mechanism, wherein the rotating mechanism at least comprises: a first connecting part, a second connecting part and a rotating shaft, wherein the first connecting part and the second connecting part are respectively provided with a first shaft hole and a second shaft hole, and the rotating shaft passes through the first shaft hole and the second shaft hole to movably connect the first connecting part and the second connecting part; the handle device is connected to the rear end of the connecting rod, the front end of the connecting rod is connected to the first connecting part, and the fixing seat is connected to the second connecting part; A circumferential position locking mechanism is provided between the first connecting portion and the second connecting portion; The circumferential position locking mechanism comprises a first locking disc and a second locking disc, wherein the first locking disc is circumferentially limited relative to the first connecting portion, and the second locking disc is circumferentially limited relative to the second connecting portion, and corresponding locking teeth are arranged between the first locking disc and the second locking disc; There are two rotating mechanisms, the first connecting part of the first rotating mechanism is connected to the front end of the connecting rod, the second connecting part of the first rotating mechanism is connected to the first connecting part of the second rotating mechanism, and the second connecting part of the second connecting mechanism is connected to the fixing seat; A first positioning notch is provided on the first connection part, and a first positioning piece is provided on the first lock disk. After the first positioning piece is inserted into the first positioning notch, the first lock disk and the first connection part are circumferentially limited. A second positioning notch is provided on the second connection part, and a second positioning piece is provided on the second lock disk. After the second positioning piece is inserted into the second positioning notch, the second lock disk and the second connection part are circumferentially limited. It also includes a locking nut. The end of the rotating shaft has a locking thread. The locking nut cooperates with the locking thread at the end of the rotating shaft and presses the first connecting part, the second connecting part, and the circumferential position locking mechanism.

2. The atrial appendage clamp delivery system according to claim 1, characterized in that: The second connection part of the first rotating mechanism and the first connection part of the second rotating mechanism form an integrated adapter, and the axis of the first connection part is perpendicular to the axis of the second connection part.

3. The atrial appendage clamp delivery system according to any one of claims 1 to 2, characterized in that: The first connecting portion has two first connecting ears, the second connecting portion has two second connecting ears, the first axial hole is arranged on the two first connecting ears, and the second axial hole is arranged on the two second connecting ears.

4. The atrial appendage clamp delivery system according to any one of claims 1 to 2, characterized in that: The rotating shaft is a hollow structure, and its outer circumference is movably matched with the first shaft hole on the first connecting part; a corresponding circumferential locking surface is provided between the rotating shaft and the second connecting part.

5. The atrial appendage clamp delivery system according to claim 4, characterized in that: The first end of the rotating shaft has a hexagonal outer plane, the second connecting portion has a hexagonal inner plane, and the circumferential locking surface is the hexagonal outer plane and the hexagonal inner plane.

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