Atrial appendage clip conveying device

Abstract

The utility model discloses an auricular appendage clip conveying device which comprises a conveying rod. The connector is arranged at the front end of the conveying rod; the two clamping arm assemblies are opposite to each other, and the rear end of each clamping arm assembly is movably connected to the connector; meshing teeth are arranged at the rear ends of the two clamping arm assemblies; the meshing teeth of the first clamping arm assembly are in direct or indirect meshing fit with the meshing teeth of the second clamping arm assembly. A clamping adjusting pull wire is arranged in the conveying rod and connected with at least one clamping arm assembly. The clamping operation precision is higher, and the safety and the effectiveness of an operation can be improved.

Description

Technical Field

[0001] The utility model belongs to the field of medical instruments, and in particular relates to an atrial appendage clamp delivery device. Background Art

[0002] Arrhythmia is a series of diseases caused by the loss of the inherent rhythm of the heartbeat due to various reasons. It has a high incidence rate and is extremely harmful to health. For example, the most common persistent arrhythmia in clinical practice is called atrial fibrillation, which is caused by various pathogenic factors that lead to abnormal changes in the electrophysiological properties of atrial myocytes, causing rapid and irregular contractions of the atria and ventricles, causing patients to have uncomfortable symptoms such as palpitations, shortness of breath, fatigue, and increase the incidence of adverse events such as heart failure, thromboembolism, and death.

[0003] 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.

[0004] In clinical manifestations, the entrance of the left atrial appendage of patients with atrial fibrillation is significantly widened, the atrial appendage loses effective regular contraction, and the movement of the atrial appendage wall is difficult to cause sufficient emptying of the left atrial appendage, resulting in blood congestion in the left atrial appendage, which then coagulates to form a thrombus. The thrombus in the atrial appendage enters the atrium and then enters the blood circulation system. These thrombi may block cerebral blood vessels or other blood vessels in the body, causing cerebral stroke or other lesions. Since the existence of the atrial appendage has no physiological function, closing the atrial appendage is a safe and effective way to prevent the formation of atrial appendage thrombus.

[0005] However, due to structural limitations, the clamping operation of the existing atrial appendage clamp delivery device is difficult to control and has high risks, and its safety and effectiveness remain to be verified. Summary of the invention

[0006] The purpose of the utility model is to provide an atrial appendage clamp delivery device. The utility model has higher clamping operation accuracy and is beneficial to improving the safety and effectiveness of the operation.

[0007] The technical solution is as follows:

[0008] Atrial appendage clip delivery device, comprising

[0009] Conveyor rod;

[0010] A connector, which is arranged at the front end of the conveying rod;

[0011] Two clamp arm assemblies, the two clamp arm assemblies are opposite to each other, and the rear end of each clamp arm assembly is movably connected to the connecting head;

[0012] Meshing teeth are provided at the rear ends of the two clamp arm assemblies;

[0013] The meshing teeth of the first clamp arm assembly directly or indirectly mesh with the meshing teeth of the first clamp arm assembly;

[0014] A clamping adjustment wire is arranged in the conveying rod and is connected to at least one of the clamping arm assemblies.

[0015] In one embodiment, at least a portion of the front end of each clamp arm assembly has a "door"-shaped cross section, and each clamp arm assembly includes two opposite clamping surfaces, which are connected by a connecting surface.

[0016] In one embodiment, the two clamping surfaces of each clamping arm assembly extend toward the rear end to form connecting ears respectively. Each clamping arm assembly has two meshing teeth, and the two meshing teeth are respectively arranged on the connecting ears.

[0017] In one embodiment, the connecting head has a front end and a rear end, the thickness of the front end is smaller than the thickness of the rear end to form a step, and the clamp arm assembly is connected to the front end.

[0018] In one of the embodiments, a flexible section is provided at the front end of the conveying rod, and the connecting head is connected to the flexible section.

[0019] In one of the embodiments, the flexible section is made of elastic material, and a plurality of circumferentially circumferentially arranged recesses are provided on the flexible section.

[0020] In one of the embodiments, a protection tube is arranged inside the conveying rod, and two clamping adjustment wires are arranged inside the protection tube, and the two clamping adjustment wires are respectively connected to the clamping arm assembly.

[0021] In one embodiment, the clamp arm assembly includes a main clamp arm, a first swing arm and a second swing arm, the first swing arm is located behind the second swing arm, the front ends of the first swing arm and the second swing arm are simultaneously movably hinged to the rear end of the main clamp arm, and the rear ends of the first swing arm and the second swing arm are simultaneously movably hinged to the connecting head.

[0022] In one embodiment, it further includes a clamping body, the clamping body including a first clamping arm and a second clamping arm;

[0023] At least two threading holes are provided on the clamp arm assembly.

[0024] After the binding wire passes through the threading hole of the first clamp arm assembly, it is connected to the first clamp arm. After the binding wire passes through the threading hole of the second clamp arm assembly, it is connected to the second clamp arm.

[0025] In one embodiment, the conveying rod is hollow inside to form a channel, and two clamping adjustment wires are arranged in the channel. The front ends of the two clamping adjustment wires are respectively connected to the clamping arm assemblies, and the rear ends of the clamping adjustment wires extend to the rear end of the conveying rod.

[0026] The technical solution provided by the utility model has the following advantages and effects:

[0027] The atrial appendage clamp delivery device of the utility model has two clamp arm assemblies connected to the connecting head at the front end of the delivery rod, and the rear ends of the two clamp arm assemblies can rotate relative to the connecting head. The delivery rod is used for delivery and rear end control operations. When the rear ends of the two clamp arm assemblies rotate relative to the connecting head, since the rear ends of the two clamp arm assemblies are both provided with meshing teeth, the rotation angles of the two clamp arm assemblies can be synchronized, so that the two clamp arm assemblies can be better aligned when clamping or releasing operations to avoid skewing. The clamping operation has higher accuracy, which is beneficial to improving the safety and effectiveness of the operation. The structure is very simple and easy to process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a structural diagram of the auricle clamp delivery device in a clamped state in the first embodiment of the utility model;

[0029] Figure 2 This is a structural diagram of the auricle clamp delivery device in the open state in the first embodiment of the utility model;

[0030] Figure 3 It is a structural diagram of the clamp arm assembly in the first embodiment of the present utility model;

[0031] Figure 4 This is a first direction view of the flexible section of the conveying rod in the first embodiment of the utility model;

[0032] Figure 5 This is a second direction view of the flexible section of the conveying rod in the first embodiment of the utility model;

[0033] Figure 6 It is a structural diagram of the front end of the auricle clamp delivery device in the second embodiment of the utility model;

[0034] Figure 7 It is an exploded view of the front end of the atrial appendage clamp delivery device in the second embodiment of the present utility model;

[0035] Figure 8 This is a structural diagram of the connection between the clamp arm assembly and the auricle clamp in the second embodiment of the present utility model;

[0036] Fig. 9 It is a structural diagram of the clamp arm assembly in the second embodiment of the present utility model;

[0037] Fig.10 It is a structural diagram of the second swing arm in the second embodiment of the utility model;

[0038] Fig.11 It is a structural diagram of the first swing arm in the second embodiment of the utility model;

[0039] Fig.12 This is a structural diagram of the connector in Embodiment 2 of the present utility model;

[0040] Fig.13 It is a structural diagram of the direction adjusting member in the second embodiment of the utility model;

[0041] Fig.14 It is an exploded view of the connection between the connector and the conveying rod in the second embodiment of the present utility model;

[0042] Fig.15 It is an exploded view of the front end of the atrial appendage clamp delivery device in the third embodiment of the present utility model;

[0043] Fig.16 This is a structural diagram of the connector in Embodiment 3 of the present utility model;

[0044] Description of reference numerals:

[0045] 10. Conveying rod, 11. Connecting head, 111. Ear piece, 12. Clamping and adjusting pull wire, 13. Flexible section, 14. Rod head, 15. Control pull wire,

[0046] 20. Clamp arm assembly, 21. Main clamp arm, 211. Rear axle hole, 212. Front axle hole, 22. First swing arm, 23. Second swing arm, 241. Rear axle hole, 242. Front axle hole, 243. Rotating shaft hole, 26. Meshing teeth, 27. Overwheel, 28. Return spring, 29. Protective tube,

[0047] 31. The first rotating shaft, 32. The second rotating shaft, 33. The third rotating shaft, 34. The fourth rotating shaft, 35. The fifth rotating shaft, 36. The sixth rotating shaft, 37. The seventh rotating shaft, 38. The eighth rotating shaft, 39. The ninth rotating shaft,

[0048] 41. first clamping arm, 42. second clamping arm, 43. elastic connecting arm, 44. threading hole, 45. binding wire,

[0049] 50. Direction adjustment member, 51. First arm, 52. Second arm, 53. Third arm, 54. Fourth arm, 55. First adjustment shaft, 56. Second adjustment shaft, 57. Make way, 571. Shaft groove, 58. Direction adjustment wire, DETAILED DESCRIPTION

[0050] 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.

[0051] 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.

[0052] 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.

[0053] It should be noted that, in this document, “fixed to” or “connected to” may mean directly fixing or connecting to an element, or indirectly fixing or connecting to an element.

[0054] Embodiment 1

[0055] like Figures 1 to 5 As shown, the auricle clamp conveying device comprises a conveying rod 10 and two clamp arm assemblies 20. The front end of the conveying rod 10 is provided with a connector 11. A flexible section 13 is provided on the conveying rod 10 near the rear end of the connector 11. The flexible section 13 is provided with multiple holes to facilitate the conveying rod 10 to bend after being subjected to force. The clamp arm assembly 20 is provided with a rotating shaft hole 243. The first clamp arm assembly 20 is movably connected to the connector 11 through the eighth rotating shaft 38. The second clamp arm assembly 20 is movably connected to the connector 11 through the ninth rotating shaft 39. The two clamp arm assemblies 20 are opposite to each other. The rear ends of the two clamp arm assemblies 20 are both provided with meshing teeth 26. The meshing teeth 26 of the two clamp arm assemblies 20 are opposite to each other and mesh with each other. A protective tube 27 is provided in the conveying rod 10. Two clamping adjustment wires 12 are provided in the protective tube 27. The two clamping adjustment wires 12 are respectively connected to the clamp arm assemblies 20.

[0056] The rear ends of the two clamp arm assemblies 20 can rotate relative to the connecting head 11, and the delivery rod 10 is used for delivery and rear end control operations. When the rear ends of the two clamp arm assemblies 20 rotate relative to the connecting head 11, since the rear ends of the two clamp arm assemblies 20 are provided with meshing teeth 26, the rotation angles of the two clamp arm assemblies 20 can be synchronized, so that the two clamp arm assemblies 20 can be better aligned when clamping or releasing operations to avoid skewing. The clamping operation is more accurate, which is beneficial to improving the safety and effectiveness of the operation. The structure is very simple and easy to process.

[0057] Embodiment 2

[0058] like Figures 5 to 14As shown, the atrial appendage clamp delivery device comprises a delivery rod 10, two clamp arm assemblies 20 and a clamp body, wherein a connector 11 is provided at the front end of the delivery rod 10, and the two clamp arm assemblies 20 are movably connected to the connector 11. The interior of the delivery rod 10 is hollow to form a channel, and a control pull wire 15 passes through the channel. A control handle is provided at the rear end of the delivery rod 10, and a plurality of control members on the control handle control the front end of the atrial appendage clamp delivery device through the control pull wire 15. In this embodiment, the control pull wire 15 comprises two clamping adjustment pull wires 12, two binding pull wires 45, and four direction adjustment pull wires 58.

[0059] Please focus on Figure 7 As shown, each of the clamping arm assemblies 20 includes a main clamping arm 21, a first swing arm 22 and a second swing arm 23. Two opposite ear pieces 111 are provided at the front end of the connecting head 11. A first rotating shaft 31, a second rotating shaft 32 and a third rotating shaft 33 are provided between the two ear pieces 111. A fourth rotating shaft 34 and a fifth rotating shaft 35 are provided at the rear end of the main clamping arm 21. Both the first swing arm 22 and the second swing arm 23 have a rear end shaft hole 241 and a front end shaft hole 242. A rear shaft hole 211 and a front shaft hole 212 are provided at the rear end of the main clamping arm 21. The fourth rotating shaft 34 is provided in the rear shaft hole 211, and the fifth rotating shaft 35 is provided in the front shaft hole 212. The front end shaft hole 242 of the first swing arm 22 is rotatably connected to the fourth rotating shaft 34 on the main clamping arm 21. The front end of the second swing arm 23 The shaft hole 242 is rotationally connected to the fifth rotating shaft 35 on the main clamping arm 21; the rear end shaft holes 241 of the two first swing arms 22 are rotationally connected to the first rotating shaft 31 and the second rotating shaft 32 on the connecting head 11 respectively, and the rear end shaft holes 241 of the two second swing arms 23 are rotationally connected to the third rotating shaft 33 on the connecting head 11; the two first swing arms 22 are provided with meshing teeth 26 at the inner position of the rear end, and the meshing teeth 26 of the two first swing arms 22 are meshed with each other, and a reset spring 28 is provided between the two main clamping arms 21, and the reset spring 28 can keep the two main clamping arms 21 in an open state, and adjust the clamping force thereof by the clamping adjustment wire 12; or, the reset spring 28 can keep the two main clamping arms 21 in a clamped state, and adjust the opening angle thereof by the clamping adjustment wire 12.

[0060] When the rear ends of the two clamp arm assemblies 20 rotate relative to the connecting head 11, since the rear ends of the two clamp arm assemblies 20 are both provided with meshing teeth 26, the rotation angles of the two clamp arm assemblies 20 can be synchronized, so that the two clamp arm assemblies 20 can be better aligned when clamping or releasing operations to avoid skewness, and the clamping operation is more accurate, which is beneficial to improving the safety and effectiveness of the operation.

[0061] Since each clamping arm assembly 20 includes a main clamping arm 21, a first swing arm 22 and a second swing arm 23, during the swinging process, the first swing arm 22 and the second swing arm 23 swing synchronously. During the swinging process, the front end of the clamping arm assembly 20 is prevented from swinging significantly relative to the rear end similar to the first embodiment. In this embodiment, the main clamping arm 21 is opened or closed in a nearly parallel manner. When the two clamping arm assemblies 20 are clamped, the front end and the rear end can be clamped in a nearly synchronous manner, and the opening or clamping action is more precise. On the other hand, the front end of the main clamping arm 21 is far away from the clamping control end and the rear end is close to the clamping control end. Considering the matching clearance and force conditions between the various components of the product, the rear ends of the two second swing arms 23 are movably connected to the third rotating shaft 33, which can ensure the effective clamping force of the front end of the main clamping arm 21.

[0062] Please focus on Figure 8 As shown, the clamping body includes a first clamping arm 41 and a second clamping arm 42. The two ends of the first clamping arm 41 and the second clamping arm 42 are connected by an elastic connecting arm 43, so that the first clamping arm 41 and the second clamping arm 42 are in a clamping state in a natural state. At least two threading holes 44 are provided on the clamping arm assembly 20. After the binding wire 45 passes through the threading hole 44 of the first clamping arm assembly 20, it is connected to the first clamping arm 41. After the binding wire 45 passes through the threading hole 44 of the second clamping arm assembly 20, it is connected to the second clamping arm 42. The first clamping arm 41 and the second clamping arm 42 are respectively connected to the two clamping arm assemblies 20 by the binding wire 45. After the clamping body is transported to the position, the binding wire 45 can be untied by the control handle to separate the clamping body from the clamping arm assembly 20.

[0063] The front ends of the clamping and adjusting pull wires 12 are respectively connected to the clamping arm assemblies 20 , and the rear ends of the clamping and adjusting pull wires 12 pass through the passages and extend to the rear end of the conveying rod 10 .

[0064] Please focus on Figure 7 , Fig.12 , Fig.14As shown, it also includes a direction adjustment member 50, which is movably connected to the front end of the conveying rod 10 through a first adjustment shaft 55, and is movably connected to the rear end of the connecting head 11 through a second adjustment shaft 56; the projections of the first adjustment shaft 55 and the second adjustment shaft 56 in the longitudinal direction of the conveying rod 10 are perpendicular to each other. Two opposite first arms 51 are provided on the connecting head 11, two opposite second arms 52 are provided at the front end of the direction adjustment member 50, two opposite third arms 53 are provided at the rear end of the direction adjustment member 50, a rod head 14 is provided at the front end of the conveying rod 10, and two opposite fourth arms 54 are provided on the rod head 14; a clearance space 57 is formed between the two first arms 51, between the two second arms 52, between the two third arms 53, and between the two fourth arms 54, and the control pull wire 15 passes through the clearance space 57. There are two first adjustment shafts 55, which are respectively arranged on the outer sides of the two first arms 51. An axis groove 571 is also provided in the clearance space 57 between the two second arms 52, and the first adjustment shaft 55 is clamped in the axis groove 571; there are also two second adjustment shafts 56, which are respectively arranged on the outer sides of the two third arms 53. An axis groove 571 is also provided in the clearance space 57 between the two fourth arms 54, and the second adjustment shaft 56 is clamped in the axis groove 571.

[0065] The direction adjustment pull wires 58 are four and form two groups, two of which are respectively connected to two opposite sides of the direction adjustment member 50, and the other two are respectively connected to two opposite sides of the connector 11; each group of direction adjustment pull wires 58 is respectively used to adjust the forward and reverse angles of one direction.

[0066] It should be noted that: the first rotating part, the second rotating part, etc. of the present application can be a rotating shaft or an axial hole; when the rotating part is an axial hole, the axial hole can be set on the clamping arm assembly 20, and when the rotating part is a rotating shaft, the rotating shaft can be fixedly set with the clamping arm assembly 20, or it can be movably set with the clamping arm assembly 20, as long as the rotating structure can be realized.

[0067] Embodiment 3

[0068] Please see Fig.15 , Fig.16As shown, this embodiment is a further improvement over the second embodiment. In this embodiment, the first rotating shaft 31, the second rotating shaft 32, the third rotating shaft 33, the sixth rotating shaft 36, and the seventh rotating shaft 37 are further provided on the connecting head. The rear end shaft holes 241 of the two first swing arms 22 are respectively rotatably connected with the first rotating shaft 31 and the second rotating shaft 32 on the connecting head 11. The rear end shaft holes 241 of the two second swing arms 23 are both rotatably connected with the third rotating shaft 33 on the connecting head 11. The rear end inner sides of the two first swing arms 22 are provided with meshing teeth 26. The sixth rotating shaft 35 and the seventh rotating shaft 37 are respectively provided with overwheels 27. The meshing teeth 26 of the rear ends of the two first swing arms 22 are respectively meshed with the corresponding overwheels 27, and the two overwheels 27 are meshed with each other. The difference between this embodiment and the first embodiment is that the rear end inner sides of the two first swing arms 22 are provided with meshing teeth 26 for indirect meshing, and the principle is the same as that of the first embodiment.

[0069] The above embodiments are not exhaustive enumerations based on 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 clip delivery device, characterized in that: include Conveyor rod; A connector, which is arranged at the front end of the conveying rod; Two clamp arm assemblies, the two clamp arm assemblies are opposite to each other, and the rear end of each clamp arm assembly is movably connected to the connecting head; Meshing teeth are provided at the rear ends of the two clamp arm assemblies; The meshing teeth of the first clamp arm assembly directly or indirectly mesh with the meshing teeth of the first clamp arm assembly; A clamping adjustment wire is arranged in the conveying rod and is connected to at least one of the clamping arm assemblies.

2. The auricle clamp delivery device according to claim 1, characterized in that: The cross section of at least a part of the front end of each clamp arm assembly is in a "door" shape, and each clamp arm assembly includes two opposite clamping surfaces, which are connected by a connecting surface.

3. The auricle clamp delivery device according to claim 2, characterized in that: The two clamping surfaces of each clamping arm assembly extend toward the rear end to form connecting ears respectively. Each clamping arm assembly has two meshing teeth, which are respectively arranged on the connecting ears.

4. The auricle clamp delivery device according to claim 3, characterized in that: The connecting head has a front end portion and a rear end portion, the thickness of the front end portion is smaller than the thickness of the rear end portion to form a step, and the clamp arm assembly is connected to the front end portion.

5. The auricle clamp delivery device according to claim 4, characterized in that: The front end of the conveying rod is provided with a flexible section, and the connecting head is connected to the flexible section.

6. The auricle clamp delivery device according to claim 5, characterized in that: The flexible section is made of elastic material and is provided with a plurality of circumferentially oriented clearance grooves.

7. The atrial appendage clamp delivery device according to claim 1, characterized in that: A protection tube is arranged inside the conveying rod, and two clamping adjustment pull wires are arranged inside the protection tube. The two clamping adjustment pull wires are respectively connected to the clamping arm assembly.

8. The auricle clamp delivery device according to claim 1, characterized in that: The clamp arm assembly includes a main clamp arm, a first swing arm and a second swing arm. The first swing arm is located behind the second swing arm. The front ends of the first swing arm and the second swing arm are movably hinged to the rear end of the main clamp arm. The rear ends of the first swing arm and the second swing arm are movably hinged to the connecting head.

9. The auricle clamp delivery device according to claim 8, characterized in that: Also included is a clamping body, which includes a first clamping arm and a second clamping arm; At least two threading holes are provided on the clamp arm assembly. After the binding wire passes through the threading hole of the first clamp arm assembly, it is connected to the first clamp arm. After the binding wire passes through the threading hole of the second clamp arm assembly, it is connected to the second clamp arm.

10. The auricle clamp delivery device according to claim 8, characterized in that: The interior of the conveying rod is hollow to form a channel, and two clamping adjustment wires are arranged in the channel. The front ends of the two clamping adjustment wires are respectively connected to the clamping arm assemblies, and the rear ends of the clamping adjustment wires extend to the rear end of the conveying rod.

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