Connecting mechanism and wire drawing device

Abstract

The invention relates to a connecting mechanism and a wire pulling device. The connecting mechanism comprises a connecting assembly capable of being connected with a pull rod of the wire pulling device and a clamping assembly connected with the connecting assembly, the clamping assembly comprises a first shell and a second shell, and the first shell and the second shell are each provided with a clamping end away from the connecting assembly. The clamping ends of the first shell and the second shell can clamp a connector of the blood pump together, at least one of the first shell and the second shell is provided with a pressing end and a rotating part, the pressing end is far away from the clamping end, and the rotating part is located between the pressing end and the clamping end; at least one of the first shell and the second shell is rotationally connected with the connecting assembly through the rotating part, the ends, away from the clamping end, of the first shell and the second shell can be made to be close by pressing the pressing end, and the clamping end of the first shell and the clamping end of the second shell can be made to be separated. According to the connecting mechanism, the connecting mechanism and the connector can be separated through pressing, and the operation is convenient.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a connecting mechanism and a wire pulling device. Background Art

[0002] After the blood pump is implanted in the body, the connector on the blood pump needs to be pulled out of the body through a wire pulling device to electrically connect with an external controller. After the connector is pulled out of the body, the wire pulling device is separated from the connector. However, the wire pulling device of the related art is cumbersome to operate, which affects the progress of the operation. Summary of the invention

[0003] Based on this, the present application provides a connection mechanism and a wire pulling device that are easy to operate.

[0004] In the first aspect, the present application provides a connecting mechanism, comprising a connecting component that can be connected to a pull rod of a pulling device and a clamping component connected to the connecting component, wherein: the clamping component comprises a first shell and a second shell, the first shell and the second shell both have a clamping end away from the connecting component, the clamping ends of the first shell and the second shell can jointly clamp the connector of the blood pump, at least one of the first shell and the second shell has a pressing end and a rotating part, the pressing end is away from the clamping end, the rotating part is located between the pressing end and the clamping end, and at least one of the first shell and the second shell is rotatably connected to the connecting component through the rotating part, wherein by pressing the pressing end, the ends of the first shell and the second shell away from the clamping end can be brought closer, and the clamping end of the first shell and the clamping end of the second shell can be separated.

[0005] In one embodiment of the present application, the clamping assembly also includes an elastic member, which is fixedly connected to the connecting assembly, and the elastic member elastically abuts against the pressing end, and the elastic member can provide an elastic supporting force to the pressing end, wherein: the elastic supporting force can make the ends of the first shell and the second shell away from the clamping end have a tendency to move away from each other, and make the clamping ends of the first shell and the second shell have a tendency to approach each other; or, the elastic supporting force can make the end of the first shell away from the clamping end have a tendency to move away from the second shell, and make the clamping end of the first shell have a tendency to approach the clamping end of the second shell.

[0006] In one embodiment of the present application, the connecting assembly is provided with a limiting cavity; the pressing end is provided with a limiting portion extending in a direction away from the clamping end, the limiting portion is accommodated in the limiting cavity, the limiting portion can abut against the cavity wall of the limiting cavity, and when the limiting portion abuts against the cavity wall of the limiting cavity, the clamping end of the first shell and the clamping end of the second shell have a minimum distance.

[0007] In one embodiment of the present application, the connection assembly includes a connection tube and a connection structure connected to the connection tube, the connection tube has a first connection end connected to the pull rod and a second connection end away from the first connection end, and the connection structure is connected to the second connection end;

[0008] At least one of the first shell and the second shell is rotatably connected to the connecting structure through the rotating portion, and the elastic member is fixedly connected to the connecting structure;

[0009] The second connecting end of the connecting tube is provided with a limiting wall, and the limiting wall surrounds the central axis of the connecting tube to form the limiting cavity;

[0010] A docking groove is provided on the outer wall of the limiting portion, and the limiting wall can be accommodated in the docking groove. When the limiting wall is accommodated in the docking groove, the groove wall of the docking groove fits with the inner surface of the limiting wall, and the outer surface of the limiting wall is coplanar with the outer surface of the clamping assembly.

[0011] In one embodiment of the present application, the elastic member includes a fixed section and an elastic section connected to the fixed section, the fixed section is fixedly connected to the connecting component, the elastic section is located between the connecting component and the inner wall surface of the pressing end, and the elastic section is bent relative to the fixed section; one end of the elastic section away from the fixed section is against the pressing end.

[0012] In one embodiment of the present application, the connection mechanism further includes at least one of the following features:

[0013] The elastic section extends from the fixed section toward the pressing end to be inclined relative to the inner wall surface of the pressing end;

[0014] The angle between the elastic section and the fixed section is an obtuse angle;

[0015] The angle between the elastic section and the inner wall surface of the pressing end is an acute angle;

[0016] The inner wall surface of the pressing end is provided with a limiting groove, and at least part of the elastic section is accommodated in the limiting groove;

[0017] The elastic section is a spring sheet structure.

[0018] In one embodiment of the present application, the connecting assembly includes a connecting cylinder and a connecting structure connected to the connecting cylinder, the connecting structure includes a first fastener and a second fastener, the first fastener is passed through the connecting cylinder, the second fastener is connected to the first fastener, and the second fastener is at least partially located between the first shell and the second shell; the connecting mechanism also includes a rotating shaft connected to the second fastener, the rotating shaft is passed through the rotating part, and is rotatably connected to at least one of the first shell and the second shell.

[0019] In one embodiment of the present application, the connection mechanism further includes a sealing member, the sealing member is sleeved on the second fastener, and the sealing member is located between the first shell and the second shell, and the sealing member can be sealed and connected to the end of the connector;

[0020] And / or, the clamping assembly also includes an elastic member, which is clamped and fixed between the first fastener and the second fastener, and the elastic member elastically abuts against the pressing end. The elastic member can provide an elastic supporting force to the pressing end so that the pressing end has a tendency to open outward relative to the connecting structure.

[0021] In one embodiment of the present application, a support platform is provided on the inner wall surface of at least one of the first shell and the second shell, and the connecting mechanism also includes a sealing member, the sealing member having a cylindrical portion with an open end and a closed end, and a flange arranged around the open end of the cylindrical portion, the cylindrical portion having a bottom opposite to the opening; the second fastener portion is partially accommodated in the cylindrical portion and abuts against the bottom of the cylindrical portion, and the position of the flange corresponds to the position of the support platform; when the clamping ends of the first shell and the second shell jointly clamp the connector, the closed end of the cylindrical portion is accommodated in the plug-in interface of the connector, and the flange is clamped between the support platform and the connector to seal the plug-in interface of the connector.

[0022] In a second aspect, the present application provides a wire pulling device, comprising a pull rod and a connecting mechanism as described in any of the above technical features, wherein the pull rod is detachably connected to the connecting assembly.

[0023] After adopting the above technical solution, this application has at least the following technical effects:

[0024] The connection mechanism and wire pulling device of the present application include a connection assembly and a clamping assembly connected to the connection assembly, the first shell and the second shell of the clamping assembly both have a clamping end away from the connection assembly and capable of clamping the connector of the blood pump together, at least one of the first shell and the second shell has a pressing end away from the clamping end and a rotating part located between the pressing end and the clamping end, and at least one of the first shell and the second shell is rotatably connected to the connection assembly through the rotating part, so that when the operator presses the pressing end, the ends of the first shell and the second shell away from the clamping end can be brought closer, and the clamping end of the first shell and the clamping end of the second shell can be separated. That is, the present application can separate the connection mechanism from the connector by pressing, and the separation of the connection mechanism from the connector is more convenient, which speeds up the operation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the structure of the connection mechanism provided in this application from one perspective.

[0026] Figure 2 for Figure 1 Cross-sectional view along the AA direction.

[0027] Figure 3 for Figure 1 The structural schematic diagram of the connecting mechanism shown is from another perspective.

[0028] Figure 4 for Figure 3 Cross-sectional view along direction BB.

[0029] Figure 5 for Figure 1 The schematic diagram of the structure in which the second shell is opened relative to the first shell is shown.

[0030] Figure 6 for Figure 1 An exploded view of the connection mechanism shown in one perspective.

[0031] Figure 7 for Figure 1 An exploded view of the connecting mechanism shown in another perspective.

[0032] Figure 8 for Figure 1 A schematic structural diagram of the first shell is shown.

[0033] Fig. 9 for Figure 1 The structural schematic diagram of the second shell is shown.

[0034] Fig.10 for Figure 4 A schematic structural diagram of the elastic member shown.

[0035] Fig.11for Figure 4 A schematic structural diagram of the second fastener is shown.

[0036] Fig.12 for Figure 2 Schematic diagram of the structure of the seal shown.

[0037] Fig.13 Schematic diagram of the structure of a connector in one embodiment of the present application.

[0038] Fig.14 This is an assembly diagram of the pull rod and connecting mechanism of the wire pulling device provided in this application.

[0039] Fig.15 for Fig.14 The assembly diagram of the pull rod and the cutter head of the wire pulling device is shown.

[0040] Wherein: 1. wire pulling device; 10. connecting mechanism; 100. connecting assembly; 101. connecting tube; 102. connecting structure; 110. first connecting end; 111. first connecting hole; 120. second connecting end; 121. second connecting hole; 130. limiting cavity; 140. central axis; 160. limiting wall; 200. clamping assembly; 2001. pressing end; 2002. clamping end; 2003. rotating part; 2 004, limit part; 2005, docking groove; 2006, limit groove; 2007, avoidance cavity; 2008, support platform; 201, clamping part; 202, receiving cavity; 203, preset gap; 210, first shell; 211, first pressing end; 212, first clamping end; 213, first limit part; 2131, first docking groove; 214, first outer peripheral surface; 215, first lug; 2151, first axis hole; 216, first inner circumference; 217, first groove; 220, second shell; 221, second pressing end; 222, second clamping end; 223, second limiting portion; 2231, second docking groove; 224, second outer circumference; 225, second lug; 2251, second shaft hole; 226, second inner circumference; 227, second groove; 230, rotating shaft; 260, elastic member; 261, fixing section; 262, Elastic section; 262a, first elastic section; 262b, second elastic section; 270, second fastener; 300, first fastener; 400, sealing member; 410, barrel; 420, flange; 411, bottom; 412, mounting hole; 50, connector; 510, mating portion; 520, outer shell surface; 530, plug interface; 60, pull rod; 610, rod; 620, connector; 70, handle; 80, blade head. DETAILED DESCRIPTION

[0041] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0042] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0043] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0044] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0045] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "on" or "below" a second feature, etc., or the like, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0047] After the blood pump is implanted in the body, the connector of the blood pump needs to be pulled out of the body through a wire pulling device to electrically connect to an external controller. After the connector of the blood pump is pulled out, the wire pulling device is separated from the connector. However, in the wire pulling device of the related art, the connection mechanism and the connector are connected in a rotating manner. When the connection mechanism is separated from the connector, the entire connection mechanism needs to be rotated, which is cumbersome to operate; and the operator (especially when wearing gloves) is prone to slipping when rotating the connection mechanism, resulting in difficulty in separating the connection mechanism and the connector, affecting the progress of the operation.

[0048] To this end, the present application provides a connection mechanism, which is used to connect medical instruments to pull the medical instruments to a target location such as outside the body or inside the body. Optionally, the connection mechanism can connect the pull rod of the pull wire device with the connector of the blood pump (not shown) to pull the connector out of the body, so that the blood pump is electrically connected to an external controller through the connector. Of course, in other embodiments of the present application, the connection mechanism can also connect other types of surgical instruments, parts to be implanted, or parts to be pulled out.

[0049] See also Figures 1 to 5 The present application only takes the connection between the connection mechanism 10 and the connector 50 as an example for explanation. The operation of the connection mechanism 10 is convenient and can be easily connected with the connector 50 (such as Fig.13The connection mechanism 10 and the connector 50 can be connected or separated by rotating or threading, which shortens the time of connecting and separating the connection mechanism 10 and the connector 50 and speeds up the surgical process. It also avoids the situation where the connection mechanism and the connector are rotated and slipped due to rotational engagement or threaded connection, and has higher safety. The specific structure of the connection mechanism 10 of an embodiment is introduced below.

[0050] Here we briefly introduce the structure and principle of the wire pulling device. Fig.14 As shown, the wire pulling device 1 includes a pull rod 60 , a handle 70 and a connecting mechanism 10 . The handle 70 is provided at one end of the pull rod 60 , and the other end is detachably connected to the connecting mechanism 10 .

[0051] See also Figure 1 , Figure 2 , Figure 5 and Fig.14 In one embodiment, the connecting mechanism 10 includes a connecting assembly 100 that can be connected to the pull rod 60 of the wire pulling device 1 and a clamping assembly 200 connected to the connecting assembly 100.

[0052] The connecting assembly 100 is detachably connected to the pull rod 60. Specifically, the connecting assembly 100 is connected to the pull rod 60 by threads. The connecting assembly 100 has a first connecting end 110 and a second connecting end 120 away from the first connecting end 110. The first connecting end 110 can be connected to the pull rod 60 of the wire pulling device 1.

[0053] The clamping assembly 200 is connected to the second connecting end 120. The clamping assembly 200 includes a first housing 210 and a second housing 220. The first housing 210 and the second housing 220 both have a clamping end 2002 away from the connecting assembly 100. The clamping ends 2002 of the first housing 210 and the second housing 220 can jointly clamp the connector 50 of the blood pump. At least one of the first housing 210 and the second housing 220 has a pressing end 2001 and a rotating portion 2003. The pressing end 2001 is away from the clamping end 2002, and the clamping end 2002 is farther away from the first connecting end 110 than the pressing end 2001. The rotating portion 2003 is located between the pressing end 2001 and the clamping end 2002, and at least one of the first housing 210 and the second housing 220 is rotatably connected to the connecting assembly 100 through the rotating portion 2003. By pressing the pressing end 2001, the ends of the first housing 210 and the second housing 220 that are away from the clamping end 2002 can be brought closer together, and the clamping end 2002 of the first housing 210 and the clamping end 2002 of the second housing 220 can be separated, so that the connector 50 is separated from the connecting mechanism 10. Specifically, when the pressing end 2001 rotates from the outside of the clamping assembly 200 to the inside, the clamping end 2002 rotates in the opposite direction to the pressing end 2001 (i.e., from the inside of the clamping assembly 200 to the outside), and is separated from the connector 50.

[0054] The connection mechanism 10 of the present application includes a connection component 100 and a clamping component 200 connected to the connection component 100. The first shell 210 and the second shell 220 of the clamping component 200 both have a clamping end 2002 away from the connection component 100 and capable of jointly clamping the connector 50 of the blood pump. At least one of the first shell 210 and the second shell 220 has a pressing end 2001 away from the clamping end 2002 and a rotating portion 2003 located between the pressing end 2001 and the clamping end 2002, and at least one of the first shell 210 and the second shell 220 is rotatably connected to the connection component 100 through the rotating portion 2003, so that when the operator presses the pressing end 2001, the ends of the first shell 210 and the second shell 220 away from the clamping end 2002 can be brought closer, and the clamping end 2002 of the first shell 210 and the clamping end 2002 of the second shell 220 can be separated. Compared with the conventional method of rotating the entire connecting mechanism 10 to separate the connecting mechanism 10 from the connector 50, the present invention can separate the connecting mechanism 10 from the connector 50 by pressing, which is more convenient and speeds up the surgical process. In addition, since there is no need to rotate the entire connecting mechanism 10, rotation slippage is avoided.

[0055] See also Figures 1 to 3 , Fig.14 The connecting assembly 100 is a component that connects the connecting mechanism 10 and the pull rod 60, and the connecting assembly 100 is detachably connected to the pull rod 60 through the first connecting end 110. When the connector 50 needs to be pulled, the connecting assembly 100 is installed on the pull rod 60 to achieve the connection between the connecting mechanism 10 and the pull rod 60, and then the pulling device 1 can be pulled. After the pulling is completed, the connecting assembly 100 can be removed from the pull rod 60. The connecting assembly 100 and the clamping assembly 200 can be reliably connected by screw fixing, pin fixing, welding, etc., to avoid the connection assembly 100 and the clamping assembly 200 from being separated during the pulling process of the pull rod 60.

[0056] The connection assembly 100 includes a connection tube 101 and a connection structure 102 connected to the connection tube 101. The first connection end 110 and the second connection end 120 are respectively two ends of the connection tube 101 in the axial direction, that is, the connection tube 101 can be detachably connected to the pull rod 60. The connection structure 102 is connected to the second connection end 120, and the connection structure 102 is also connected to the clamping assembly 200. At least one of the first shell 210 and the second shell 220 is rotatably connected to the connection structure 102 through the rotating part 2003, so that the first shell 210 and the second shell 220 can rotate relative to each other. In this embodiment, the first shell 210 and the second shell 220 are both rotatably connected to the connection structure 102 through the rotating part 2003. In other embodiments, the first shell 210 or the second shell 220 is rotatably connected to the connection structure 102 through the rotating part 2003.

[0057] In this embodiment, the axial direction of the connecting component 100 is the axial direction of the connecting tube 101, which refers to the direction consistent with the extension direction of the central axis 140 of the connecting tube 101; the radial direction of the connecting component 100 refers to the radius or diameter direction of the circular cross-section of the connecting tube 101, and this direction is perpendicular to the axial direction of the connecting component 100; the circumferential direction of the connecting component 100 refers to the circumferential direction of the circular cross-section of the connecting tube 101.

[0058] The clamping assembly 200 is a component for connecting the connection mechanism 10 and the connector 50. The clamping assembly 200 is detachably connected to the connector 50. Specifically, the connector 50 is mounted to the end of the clamping assembly 200 away from the connection cylinder 101, so that the pull rod 60 can pull the connector 50 out of the body later. After the connector 50 is pulled out of the body, the connector 50 is disassembled from the end of the clamping assembly 200 away from the connection cylinder 101 to separate the connection mechanism 10 from the connector 50.

[0059] The first shell 210 and the second shell 220 extend along the axial direction of the connecting assembly 100. The first shell 210 and the second shell 220 can enclose and form a receiving cavity 202, and the receiving cavity 202 can receive at least part of the connector 50 of the blood pump, and the cavity wall of the receiving cavity 202 can be snap-fitted with the connector 50. The first shell 210 and the second shell 220 are semi-cylindrical structures, and the first shell 210 and the second shell 220 can form a complete cylindrical clamping assembly 200 after being installed to snap-fit ​​with the connector 50.

[0060] See also Figure 1 and Figure 2 , the first housing 210 and the second housing 220 are rotatably connected, and illustratively, the second housing 220 rotates relative to the first housing 210 around the rotation axis O. When the second housing 220 rotates relative to the first housing 210, the second housing 220 can be closed or opened relative to the first housing 210, so that the first housing 210 and the second housing 220 clamp or release the connector 50. In this embodiment, the first housing 210 and the second housing 220 both rotate around the rotation axis O.

[0061] When the second housing 220 rotates around the rotation axis O to be closed relative to the first housing 210, the second clamping end 222 is closed relative to the first clamping end 212, and the first housing 210 and the second housing 220 can form a complete cylindrical structure. At this time, the first housing 210 and the second housing 220 are surrounded by a hollow receiving chamber 202, and the receiving chamber 202 can receive the connector 50, so as to fix the connector 50 to the first housing 210 and the second housing 220, so as to achieve the clamping assembly 200 to clamp the connector 50, thereby achieving a reliable connection between the connector 50 and the connecting mechanism 10, and facilitating the subsequent pulling of the connector 50.

[0062] In this embodiment, the first shell 210 and the second shell 220 both rotate around the rotation axis O. The first shell 210 and the second shell 220 both include a pressing end 2001, a clamping end 2002, and a rotating portion 2003 located between the pressing end 2001 and the clamping end 2002. The rotating portion 2003 of the first shell 210 is rotatably connected to the second shell 220 or the second connecting end 120, and the rotating portion 2003 of the second shell 220 is rotatably connected to the first shell 210 or the second connecting end 120, that is, the first shell 210 and the second shell 220 can rotate relative to each other. In one embodiment, the first shell 210 rotates around the rotation axis O. The first shell 210 includes a pressing end 2001, a clamping end 2002, and a rotating portion 2003 located between the pressing end 2001 and the clamping end 2002. The second shell 220 can be fixedly connected to the connecting assembly 100. The rotating portion 2003 of the first shell 210 is rotatably connected to the second shell 220 or the second connecting end 120, that is, the second shell 220 rotates relative to the first shell 210. In another embodiment, the second shell 220 rotates around the rotation axis O. The second shell 220 includes a pressing end 2001, a clamping end 2002, and a rotating portion 2003 located between the pressing end 2001 and the clamping end 2002. The first shell 210 can be fixedly connected to the connecting assembly 100. The rotating portion 2003 of the second shell 220 is rotatably connected to the first shell 210 or the second connecting end 120, that is, the second shell 220 rotates relative to the first shell 210.

[0063] In this embodiment, the pressing end 2001 includes a first pressing end 211 disposed on the first housing 210 and a second pressing end 221 disposed on the second housing 220. The clamping end 2002 includes a first clamping end 212 disposed on the first housing 210 and a second clamping end 222 disposed on the second housing 220. The rotating portion 2003 includes a first rotating portion 2013 disposed on the first housing 210 and a second rotating portion 2203 disposed on the second housing 220.

[0064] See also Figure 1 , Figure 2 and Figure 4 The portion of the first shell 210 close to the connecting tube 101 is the first pressing end 211, the portion of the first shell 210 away from the connecting tube 101 is the first clamping end 212, the portion of the second shell 220 close to the connecting tube 101 is the second pressing end 221, and the portion of the second shell 220 away from the connecting tube 101 is the second clamping end 222.

[0065] The first pressing end 211 and the second pressing end 221 are located on the side of the rotation axis O close to the connecting tube 101, and the first pressing end 211 and the second pressing end 221 are arranged opposite to each other in the circumferential direction of the connecting tube 101. The first clamping end 212 and the second clamping end 222 are located on the side of the rotation axis O away from the connecting tube 101, and the first clamping end 212 and the second clamping end 222 are arranged opposite to each other in the circumferential direction of the connecting tube 101. In this embodiment, the second pressing end 221 is pressed to open the second clamping end 222 relative to the first clamping end 212. Of course, in other embodiments of the present application, the first pressing end 211 may also be pressed or the first pressing end 211 and the second pressing end 221 may be pressed simultaneously.

[0066] When the operator presses the second pressing end 221, the second pressing end 221 moves toward the central axis 140 of the connecting tube 101, so that the second housing 220 rotates relative to the first housing 210 around the rotation axis O, and the second clamping end 222 opens relative to the first clamping end 212. At this time, the end of the connector 50 can be placed in the first housing 210. Then the second pressing end 221 is reset, and the second pressing end 221 moves away from the central axis 140 of the connecting tube 101, and the first pressing end 211 and the second pressing end 221 are separated from each other, so that the first clamping end 212 and the second clamping end 222 are closed. At this time, the first clamping end 212 and the second clamping end 222 enclose the receiving cavity 202, and the connector 50 is received in the receiving cavity 202, that is, the clamping assembly 200 clamps the connector 50 through the first clamping end 212 and the second clamping end 222 to achieve the connection between the connecting mechanism 10 and the connector 50.

[0067] See also Figure 2 , Figure 5 and Fig.14 When the operator presses the second pressing end 221, the second pressing end 221 can move toward the central axis 140 of the connecting tube 101, and then the second shell 220 rotates relative to the first shell 210 around the rotation axis O, so that the second clamping end 222 opens relative to the first clamping end 212, the accommodating cavity 202 is opened, and the clamping assembly 200 releases the connector 50, and the connector 50 can be removed from between the first shell 210 and the second shell 220.

[0068] Compared with the conventional method of separating the connection mechanism from the connector by rotating the connection mechanism, the connection mechanism 10 of the present application can open the second clamping end 222 relative to the first clamping end 212 by pressing the first pressing end 211 or the second pressing end 221, making the separation of the connection mechanism 10 from the connector 50 more convenient and speeding up the surgical process. In addition, since there is no need to rotate the entire connection mechanism 10, rotation slippage is avoided.

[0069] See also Figure 1 , Figure 2 and Fig.14 In one embodiment, the extending direction of the rotation axis O is perpendicular to the axial direction of the connecting assembly 100, that is, the rotation axis O extends along the radial direction of the connecting assembly 100, and the first housing 210 and the second housing 220 can rotate around the rotation axis O. In this way, when the second housing 220 rotates relative to the first housing 210, the second clamping end 222 can accurately approach or move away from the first clamping end 212, avoiding interference with the connecting cylinder 101, so that the connecting mechanism 10 can be accurately connected to or separated from the connector 50.

[0070] In one embodiment, the connection structure 102 includes a first fastener 300, which is inserted into the connection tube 101 and extends toward the clamping assembly 200. The first fastener 300 can be installed in the clamping assembly 200 through the connection tube 101, thereby improving the reliability of the connection between the connection tube 101 and the clamping assembly 200 and preventing the connection tube 101 from being separated from the clamping assembly 200 during the pulling process of the pull rod 60.

[0071] Optionally, the connecting tube 101 is cylindrically shaped. In this way, the outer surface of the connecting tube 101 is smooth without edges, and when the pull rod 60 pulls the connector 50 through the connecting mechanism 10, the outer peripheral surface of the connecting tube 101 will not scratch human tissue, thereby avoiding damage to human tissue.

[0072] Optionally, a first connection hole 111 is provided at one end of the connecting tube 101 away from the clamping assembly 200, and the pull rod 60 is detachably mounted in the first connection hole 111. This facilitates the connection between the pull rod 60 and the connecting mechanism 10. Optionally, the connecting tube 101 and the pull rod 60 are connected by threads. Of course, in other embodiments of the present application, the connecting tube 101 and the pull rod 60 can also be connected by snap-fitting or other methods, as long as the detachable connection between the connecting tube 101 and the pull rod 60 can be achieved.

[0073] Optionally, the end of the connecting cylinder 101 close to the clamping assembly 200 has a second connecting hole 121, the second connecting hole 121 is connected to the first connecting hole 111, and the diameter of the second connecting hole 121 is smaller than the diameter of the first connecting hole 111. In other words, the first connecting hole 111 is connected to the second connecting hole 121 along the axial direction of the connecting cylinder 101 and penetrates the connecting cylinder 101. The first fastener 300 passes through the second connecting hole 121 and is installed in the clamping assembly 200.

[0074] In one embodiment, there is a preset gap 203 between the first pressing end 211 and the second pressing end 221 along the circumference of the connecting tube 101. That is, there is a certain distance between the circumferential end surface of the first pressing end 211 and the circumferential end surface of the second pressing end 221 to form the preset gap 203. The preset gap 203 can provide movement space for the first pressing end 211 or the second pressing end 221 when pressing, so as to prevent the second pressing end 221 from abutting against the first pressing end 211 and affecting the rotation of the second housing 220 relative to the first housing 210 around the rotation axis O, so as to facilitate the clamping assembly 200 to clamp and release the connector 50.

[0075] See also Figure 1 , Figure 2 and Figure 6 In one embodiment, the connection mechanism 10 further includes a rotating shaft 230, which is disposed through the rotating portion 2003 and is rotatably connected to at least one of the first shell 210 and the second shell 220, so that at least one of the first shell 210 and the second shell 220 can rotate around the rotating shaft 230. The central axis of the rotating shaft 230 is the rotation axis O, that is, the rotating shaft 230 is perpendicular to the axial direction of the connecting cylinder 101. In this embodiment, the rotating shaft 230 is disposed through the first shell 210 and the second shell 220. In other embodiments, the rotating shaft 230 is disposed through the first shell 210 or the second shell 220.

[0076] The rotating shaft 230 extends in the radial direction of the connecting assembly 100, and the first housing 210 and the second housing 220 can rotate around the rotating shaft 230. At least one of the first housing 210 and the second housing 220 can rotate around the rotating shaft 230 to close or open the first clamping end 212 and the second clamping end 222, thereby achieving the first clamping end 212 and the second clamping end 222 clamping or releasing the connector 50.

[0077] In one embodiment, the rotating shaft 230 is roughly disposed in the middle of the first shell 210 and the second shell 220 to roughly divide the first shell 210 and the second shell 220 along the axial direction of the connecting assembly 100. In this way, when the operator presses the second pressing end 221, the second pressing end 221 can more easily drive the second shell 220 to rotate around the rotating shaft 230, making the pressing of the second pressing end 221 more labor-saving and convenient for the operator. At the same time, after the first clamping end 212 and the second clamping end 222 enclose the receiving cavity 202, the receiving cavity 202 has a certain depth along the axial direction of the connecting tube 101 to improve the reliability of the clamping connector 50.

[0078] See also Figure 4 , Figure 6 and Figure 7In one embodiment, the connection assembly 100 is provided with a limiting cavity 130. The pressing end 2001 is provided with a limiting portion 2004 extending in a direction away from the clamping end 2002. The limiting portion 2004 is received in the limiting cavity 130. When the first shell 210 and the second shell 220 enclose the receiving cavity 202, the limiting portion 2004 abuts against the cavity wall 131 of the limiting cavity 130 to limit the limiting portion 2004 from continuing to move away from the central axis 140 of the connecting tube 101, thereby preventing the first shell 210 or the second shell 220 from over-travel movement. When the limiting portion 2004 abuts against the cavity wall 131 of the limiting cavity 130, the clamping end 2002 of the first shell 210 and the clamping end 2002 of the second shell 220 have a minimum distance, so that the first clamping end 212 and the second clamping end 222 remain closed, thereby improving the reliability of clamping.

[0079] The second connection end 120 of the connection tube 101 is provided with a limiting wall 160 , and the limiting wall 160 surrounds the central axis 140 of the connection tube 101 to form a limiting cavity 130 .

[0080] The limiting portion 2004 includes a first limiting portion 213 and a second limiting portion 223. The first limiting portion 213 is disposed at a side of the first pressing end 211 away from the first clamping end 212, and the second limiting portion 223 is disposed at an end of the second pressing end 221 away from the second clamping end 222. The first limiting portion 213 and the second limiting portion 223 are disposed opposite to each other along the circumferential direction of the connecting assembly 100, and both the first limiting portion 213 and the second limiting portion 223 are accommodated in the limiting cavity 130.

[0081] After the connecting tube 101 is installed on the clamping assembly 200 through the first fastener 300 , the first limiting portion 213 and the second limiting portion 223 are located in the limiting cavity 130 .

[0082] When the second pressing end 221 is pressed, the second pressing end 221 can drive the second limiting portion 223 to move in the limiting cavity 130 toward the central axis 140 of the connecting tube 101. After the second pressing end 221 is released, the second pressing end 221 is reset, that is, the second pressing end 221 can drive the second limiting portion 223 to move in the limiting cavity 130 toward the central axis 140 away from the connecting tube 101. When the second limiting portion 223 abuts against the cavity wall 131 of the limiting cavity 130, the cavity wall 131 can block and limit the second limiting portion 223, so as to limit the second limiting portion 223 from continuing to move away from the central axis 140 of the connecting tube 101, and prevent the second housing 220 from over-travel movement, so as to keep the first clamping end 212 and the second clamping end 222 closed, thereby improving the reliability of clamping.

[0083] See also Figure 4 , Figure 6 , Figure 7 and Fig.14The outer wall of the limiting portion 2004 is provided with a docking groove 2005, and the docking groove 2005 is recessed from the outer peripheral surface of the second shell 220 toward the central axis 140 of the connecting tube 101. The limiting wall 160 can be accommodated in the docking groove 2005, and when the limiting wall 160 is accommodated in the docking groove 2005, the groove wall of the docking groove 2005 is in contact with the inner surface of the limiting wall 160, and the outer surface of the limiting wall 160 is coplanar with the outer surface of the clamping assembly 200, wherein the inner surface of the limiting wall 160 is the cavity wall 131 of the limiting cavity 130. The outer surface of the limiting wall 160 is coplanar with the outer surface of the clamping assembly 200, so that the outer surface of the clamping assembly 200 and the outer surface of the connecting tube 101 roughly form a cylindrical surface, so that there is no edge or protrusion on the outer wall of the connecting mechanism 10, so that when the pull rod 60 pulls the connecting mechanism 10, the connecting mechanism 10 will not scratch the human tissue.

[0084] In this embodiment, the docking groove 2005 includes a first docking groove 2131 disposed on the first limiting portion 213 and a second docking groove 2231 disposed on the second limiting portion 223 .

[0085] The first housing 210 has a first outer peripheral surface 214, and the first limiting portion 213 has a first docking groove 2131. The first docking groove 2131 is recessed from the first outer peripheral surface 214 toward the central axis 140 of the connecting tube 101, and can abut against the cavity wall 131 of the limiting cavity 130. When the groove wall of the first docking groove 2131 abuts against the cavity wall 131 of the limiting cavity 130, the first outer peripheral surface 214 and the outer surface of the limiting wall 160 are coplanar.

[0086] In one embodiment, the second housing 220 has a second outer peripheral surface 224, and the second limiting portion 223 has a second docking groove 2231. The second docking groove 2231 is recessed from the second outer peripheral surface 224 toward the central axis 140 of the connecting tube 101, and can abut against the cavity wall 131 of the limiting cavity 130. When the groove wall of the second docking groove 2231 fits the inner surface of the limiting wall 160, the second outer peripheral surface 224 and the outer surface of the limiting wall 160 are coplanar.

[0087] See also Figures 7 to 9 The rotating part 2003 has a lug protruding toward the rotating shaft 230, the lug has a shaft hole, and the rotating shaft 230 is passed through the shaft hole. In one embodiment, the first housing 210 has a first lug 215 protruding toward the second housing 220, the first lug 215 has a first shaft hole 2151, the second housing 220 has a second lug 225 protruding toward the first housing 210, the second lug 225 has a second shaft hole 2251, the first shaft hole 2151 and the second shaft hole 2251 are coaxially arranged, and the rotating shaft 230 is passed through the first shaft hole 2151 and the second shaft hole 2251.

[0088] The first lug 215 is disposed on the first housing 210 and protrudes toward the second housing 220, and the second lug 225 is disposed on the second housing 220 and protrudes toward the first housing 210. When the first housing 210 and the second housing 220 are installed, the first lug 215 and the second lug 225 are coaxially disposed through the first shaft hole 2151 and the second shaft hole 2251, and the rotating shaft 230 is rotatably provided with the first shaft hole 2151 and the second shaft hole 2251. In this way, the first housing 210 can rotate around the rotating shaft 230 through the first shaft hole 2151, and the second housing 220 can also rotate around the rotating shaft 230 through the second shaft hole 2251, so as to realize the closing or opening of the first clamping end 212 and the second clamping end 222.

[0089] Optionally, the first shell 210 has a first inner circumferential surface 216, the second shell 220 has a second inner circumferential surface 226, the first lug 215 is protrudingly provided on the first inner circumferential surface 216, and the second lug 225 is protrudingly provided on the second inner circumferential surface 226. Exemplarily, the first lug 215 is provided on the end surface of the first shell 210, the second lug 225 is provided on the second inner circumferential surface 226 of the second shell 220, and the first lug 215 is located on the outside of the second lug 225. Of course, in other embodiments of the present application, the first lug 215 may also be provided on the first inner circumferential surface 216 of the first shell 210, and the second lug 225 may be located on the end surface of the second shell 220.

[0090] See also Figure 4 , Figure 8 , Fig. 9 and Fig.13 In one embodiment, the inner wall of at least one of the first shell 210 and the second shell 220 has a snap-fit ​​portion 201, and the outer wall of the connector 50 is provided with a matching portion 510 corresponding to the snap-fit ​​portion 201. When the second shell 220 is closed relative to the first shell 210, the snap-fit ​​portion 201 and the matching portion 510 are snap-fitted to achieve a stable connection between the connection mechanism 10 and the connector 50.

[0091] The inner surface of the first shell 210 is a first inner circumferential surface 216. Fig. 9 As shown, the inner surface of the second housing 220 is the second inner circumferential surface 226. Accordingly, the connector 50 has an outer shell surface 520, as shown in FIG. Fig.13 After the receiving cavity 202 receives and fixes the connector 50 , the outer shell surface 520 can abut against the first inner circumferential surface 216 and the second inner circumferential surface 226 , so that the first shell 210 and the second shell 220 clamp the connector 50 , thereby improving the reliability of the connection between the connection mechanism 10 and the connector 50 .

[0092] In this embodiment, both the first inner circumferential surface 216 and the second inner circumferential surface 226 have a clamping portion 201, and accordingly, the outer shell surface 520 is provided with two matching portions 510, and the two matching portions 510 correspond to the two clamping portions 201. Of course, in other embodiments of the present application, the clamping portion 201 can also be provided on the first inner circumferential surface 216, or, on the second inner circumferential surface 22. The outer shell surface 520 is provided with a matching portion 510, and the matching portion 510 corresponds to the clamping portion 201.

[0093] One of the engaging portion 201 and the matching portion 510 is an engaging protrusion, and the other is an engaging groove matched with the engaging protrusion. In the present embodiment, the engaging portion 201 is an engaging protrusion, which is convexly arranged on the first inner circumferential surface 216 and the second inner circumferential surface 226, and correspondingly, the matching portion 510 is an engaging groove, which is recessed in the outer shell surface 520. After the receiving cavity 202 receives and fixes the connector 50, the engaging protrusion is engaged in the engaging groove. Of course, in other embodiments of the present application, the engaging portion 201 may also be an engaging groove, which is recessed in the first inner circumferential surface 216 and the second inner circumferential surface 226, and the matching portion 510 is an engaging protrusion, which is convexly arranged on the outer shell surface 520.

[0094] In one embodiment, the height of the engaging protrusion is less than or equal to the depth of the engaging groove. In this way, the engaging protrusion can be accurately engaged in the engaging groove, so as to avoid the engaging protrusion being exposed in the engaging groove and causing the outer shell surface 520 of the connector 50 to fail to effectively abut the first inner circumferential surface 216 and the second inner circumferential surface 226, thereby improving the reliability of the connection between the connector 50 and the connecting mechanism 10.

[0095] See also Figure 2 , Figure 4 and Figure 6 In one embodiment, the clamping assembly 200 further includes an elastic member 260, and the elastic member 260 is fixedly connected to the connection structure 102 of the connection assembly 100. The elastic member 260 elastically abuts against the pressing end 2001, and can provide an elastic supporting force to the pressing end 2001. The elastic supporting force can make the ends of the first shell 210 and the second shell 220 away from the clamping end 2002 have a tendency to move away from each other, and make the clamping ends 2002 of the first shell 210 and the second shell 220 have a tendency to move closer to each other. Alternatively, the elastic supporting force can make the end of the first shell 210 away from the clamping end 2002 have a tendency to move away from the second shell 220, and make the clamping end 2002 of the first shell 210 have a tendency to move closer to the clamping end 2002 of the second shell 220.

[0096] In this embodiment, the elastic member 260 elastically abuts between the first pressing end 211 and the second pressing end 221 to provide an elastic supporting force enclosed by the first clamping end 212 and the second clamping end 222, that is, the elastic member 260 can provide an elastic supporting force for the pressing end 2001 to expand outward relative to the second connecting end 120.

[0097] The elastic member 260 is disposed in the clamping assembly 200 and can provide a certain elastic support force so that the elastic member 260 elastically abuts between the first pressing end 211 and the second pressing end 221. The elastic member 260 is clamped and fixed to the connecting structure 102, and the end of the elastic member 260 abuts against the pressing end 2001. The elastic member 260 can provide an elastic support force to the pressing end 2001 so that the pressing end 2001 has a tendency to open outward relative to the connecting structure 102.

[0098] When the second pressing end 221 is pressed, the pressing force can make the second pressing end 221 overcome the elastic supporting force of the elastic member 260, so that the second pressing end 221 moves toward the central axis 140 of the connecting tube 101, so that the second clamping end 222 opens relative to the first clamping end 212. After the second pressing end 221 is released, the pressing force on the second pressing end 221 disappears, and the elastic supporting force of the elastic member 260 can push the second pressing end 221 to move away from the central axis 140 of the connecting tube 101, so that the second pressing end 221 is reset, and the second clamping end 222 is closed relative to the first clamping end 212 to clamp the connector 50.

[0099] The elastic member 260 applies a certain elastic supporting force to the first pressing end 211 and the second pressing end 221, so that the first pressing end 211 and the second pressing end 221 are separated from each other, and then the first clamping end 212 and the second clamping end 222 are kept closed, thereby improving the stability of the connection between the clamping assembly 200 and the connector 50. When the first pressing end 211 or the second pressing end 221 is accidentally touched, the force of the accidental touch is smaller than the elastic supporting force of the elastic member 260. At this time, the elastic member 260 can keep the first pressing end 211 and the second pressing end 221 in a non-pressed state, that is, the elastic member 260 can keep the first clamping end 212 and the second clamping end 222 in a closed state, thereby improving the clamping stability of the clamping assembly 200.

[0100] See also Figure 1 , Figure 2 and Fig.11In one embodiment, the connection structure 102 further includes a second fastener 270, which is at least partially located between the first housing 210 and the second housing 220 and connected to the first fastener 300. The rotating shaft 230 is connected to the second fastener 270, and at least part of the elastic member 260 is disposed between the first fastener 300 and the second fastener 270. The rotating portion 2003 is rotatably mounted on the second fastener 270.

[0101] The second fastener 270 is fixedly connected to the first fastener 300. The rotating shaft 230 is disposed through the second fastener 270, and the rotating shaft 230 can also rotatably connect the first shell 210 and the second shell 220. In this way, the first fastener 300, the second fastener 270 and the rotating shaft 230 can realize a stable connection between the connecting tube 101 and the first shell 210 and the second shell 220.

[0102] The second fastener 270 passes through the elastic member 260 to fix at least part of the elastic member 260 between the first fastener 300 and the second fastener 270, so that the position of the elastic member 260 in the receiving cavity 202 is fixed, and the stability of the elastic member 260 elastically abutting the first pressing end 211 and the second pressing end 221 is improved. Optionally, the second fastener 270 is fixed to the first fastener 300 by a threaded connection to improve the reliability of the connection between the first fastener 300 and the second fastener 270. Of course, in other embodiments of the present application, the second fastener 270 can also be fixed to the first fastener 300 by interference fit, snap connection, etc.

[0103] See also Figure 4 , Figure 6 and Fig.10 In one embodiment, the elastic member 260 includes a fixed section 261 and an elastic section 262. The fixed section 261 is fixedly connected to the connection assembly 100. For example, the fixed section 261 is fixedly arranged between the first fastener 300 and the second fastener 270. The elastic section 262 is connected to the fixed section 261, and the elastic section 262 is located between the connection assembly 100 and the inner wall surface of the pressing end 2001. The elastic section 262 is bent relative to the fixed section 261; the end of the elastic section 262 away from the fixed section 261 is against the pressing end 2001.

[0104] The elastic section 262 includes a first elastic section 262a and a second elastic section 262b, which are connected to opposite ends of the fixed section 261 and are located on the same side of the fixed section 261. The first elastic section 262a elastically abuts against the first pressing end 211, and the second elastic section 262b elastically abuts against the second pressing end 221.

[0105] The elastic section 262 extends from the fixed section 261 toward the pressing end 2001 to be inclined relative to the inner wall surface of the pressing end 2001 .

[0106] The fixing section 261 is fixed between the first fastener 300 and the second fastener 270, so that the elastic member 260 is fixed to the clamping assembly 200 and is located at the end of the receiving cavity 202 facing the connecting tube 101. In this way, the position of the elastic member 260 in the receiving cavity 202 can be fixed, and the stability of the elastic member 260 elastically abutting the first pressing end 211 and the second pressing end 221 can be improved. The first elastic section 262a and the second elastic section 262b are arranged relative to the fixing section 261, and the first elastic section 262a is arranged corresponding to the first shell 210 and supports and abuts the first pressing end 211, and the second elastic section 262b is arranged corresponding to the second shell 220 and supports and abuts the second pressing end 221.

[0107] When the first pressing end 211 is pressed, the pressing force applied to the first pressing end 211 can overcome the elastic support force of the first elastic section 262a and move toward the central axis 140 of the connecting tube 101; when the first pressing end 211 is released, the elastic support force of the first elastic section 262a causes the first pressing end 211 to reset (move away from the central axis 140 of the connecting tube 101). Similarly, when the second pressing end 221 is pressed, the pressing force applied to the second pressing end 221 can overcome the elastic support force of the second elastic section 262b and move toward the central axis 140 of the connecting tube 101; when the second pressing end 221 is released, the elastic support force of the second elastic section 262b causes the second pressing end 221 to reset (move away from the central axis 140 of the connecting tube 101).

[0108] Optionally, the fixed section 261, the first elastic section 262a and the second elastic section 262b are an integrated structure. In this way, the structural strength of the elastic member 260 can be improved to stably support the first pressing end 211 and the second pressing end 221, and the manufacturing process can be simplified. Of course, in other embodiments of the present application, the fixed section 261, the first elastic section 262a and the second elastic section 262b can also be reliably connected by welding, bonding, etc.

[0109] See also Figure 4 and Fig.10In one embodiment, the first elastic section 262a and the second elastic section 262b are arranged obliquely relative to the fixed section 261, and extend in a direction away from the central axis 140 of the connecting tube 101. In the direction from the second connecting end 120 to the first connecting end 110, the distance between the first elastic section 262a and the second elastic section 262b gradually increases, so that the first elastic section 262a can stably elastically abut the first pressing end 211, and the second elastic section 262b can stably abut and support the second pressing end 221, so that the first clamping end 212 and the second clamping end 222 remain closed, thereby improving the stability of the connection between the connecting mechanism 10 and the connector 50.

[0110] In one embodiment, the angle between the elastic section 262 and the fixed section 261 is an obtuse angle. The angle between the first elastic section 262a and the fixed section 261 is an obtuse angle, and the first elastic section 262a elastically abuts against the first pressing end 211. The angle between the second elastic section 262b and the fixed section 261 is an obtuse angle, and the second elastic section 262b elastically abuts against the second pressing end 221. The angle between the elastic section 262 and the inner wall surface of the pressing end 2001 is an acute angle. In this way, the first elastic section 262a and the second elastic section 262b are separated from each other along the axial direction of the connecting component 100, so that the first elastic section 262a can stably elastically abut against the first pressing end 211, and the second elastic section 262b can stably support the second pressing end 221, thereby improving the stability of the clamping between the first clamping end 212 and the second clamping end 222, and improving the stability of the connection between the connecting mechanism 10 and the connector 50. Optionally, an included angle θ1 between the first elastic section 262 a and the fixed section 261 is 95° to 150°, and an included angle θ2 between the second elastic section 262 b and the fixed section 261 is 95° to 150°.

[0111] In one embodiment, the elastic section 262 is a spring structure. The first elastic section 262a and the second elastic section 262b are both spring structures. The spring structure is a metal sheet with elastic properties to stably elastically abut the first pressing end 211 and the second pressing end 221. Of course, in other embodiments of the present application, the elastic member 260 can be a torsion spring, and the first elastic section 262a and the second elastic section 262b are torsion arms of the torsion spring.

[0112] See also Figures 7 to 10In one embodiment, the inner wall surface of the pressing end 2001 is provided with a limiting groove 2006, and at least a part of the elastic section 262 is accommodated in the limiting groove 2006. The limiting groove 2006 includes a first groove 217 provided at the first pressing end 211, and a second groove 227 provided at the second pressing end 221. The first groove 217 is recessed in the first inner circumferential surface 216, and at least a part of the first elastic section 262a is accommodated in the first groove 217. The second groove 227 is recessed in the second inner circumferential surface 226, and at least a part of the second elastic section 262b is accommodated in the second groove 227.

[0113] When the first elastic section 262a elastically abuts against the first pressing end 211, part of the first elastic section 262a is located in the first groove 217. The first groove 217 can limit the first elastic section 262a to prevent the first elastic section 262a from slipping along the first inner circumferential surface 216, thereby further improving the stability of the elastic abutment of the first elastic section 262a against the first pressing end 211.

[0114] When the second elastic section 262b elastically abuts against the second pressing end 221, part of the second elastic section 262b is located in the second groove 227. The second groove 227 can limit the second elastic section 262b to prevent the second elastic section 262b from slipping along the second inner circumferential surface 226, thereby further improving the stability of the elastic abutment of the second elastic section 262b against the second pressing end 221.

[0115] It is worth noting that the structural form and number of the first groove 217 and the second groove 227 are not limited in principle, as long as the first groove 217 can limit the first elastic section 262a and the second groove 227 can limit the second elastic section 262b. In this embodiment, the first groove 217 and the second groove 227 are long strip grooves. Of course, in other embodiments of the present application, the first groove 217 and the second groove 227 can also be regular or irregular shapes such as circular, elliptical, polygonal, etc.

[0116] Exemplarily, the number of the first grooves 217 is two, and the two first grooves 217 are symmetrically arranged on the first inner circumferential surface 216, and the two edges of the first elastic section 262a along the circumference of the connecting tube 101 are respectively located in the two first grooves 217 to stably limit the first elastic section 262a. Of course, in other embodiments of the present application, one groove can also be used to accommodate the two edges of the circumference of the first elastic section 262a. The number of the second grooves 227 is two, and the two second grooves 227 are symmetrically arranged on the second inner circumferential surface 226, and the two edges of the second elastic section 262b along the circumference of the connecting tube 101 are respectively located in the two second grooves 227 to stably limit the second elastic section 262b. Of course, in other embodiments of the present application, one groove can also be used to accommodate the two edges of the circumference of the second elastic section 262b.

[0117] See also Figure 4 , Figure 7 and Fig.13 In one embodiment, the connection mechanism 10 further includes a seal 400 , which is disposed in the clamping assembly 200 and located on a side of the accommodating cavity 202 close to the connecting tube 101 . The seal 400 can be sealed and connected to the end of the connector 50 .

[0118] The seal 400 is sleeved on the second fastener 270, and the seal 400 is located between the first housing 210 and the second housing 220. In one embodiment, the side of the seal 400 facing the connecting cylinder 101 is nested with the side of the second fastener 270 away from the connecting cylinder 101. In this way, the seal 400 can be fixedly mounted to the second fastener 270, so that the position of the seal 400 in the clamping assembly 200 is fixed, so that the seal 400 can effectively seal the plug interface 530 of the connector 50.

[0119] When the first clamping end 212 and the second clamping end 222 clamp the connector 50, the end of the connector 50 is received and fixed in the receiving cavity 202, and the outer shell surface 520 of the connector 50 abuts against the first inner circumferential surface 216 and the second inner circumferential surface 226. At the same time, the sealing member 400 is disposed at the end of the connector 50 and seals the insertion port 530 of the connector 50 to prevent blood from entering the connector 50.

[0120] In this embodiment, the sealing member 400 comprises a cylinder 410 and a flange 420. The cylinder 410 is open at one end and closed at the other end. The cylinder 410 has a bottom 411 opposite to the opening. The second fastener 270 is partially received in the cylinder 410 and abuts against the bottom 411 of the cylinder 410. The flange 420 is arranged around the open end of the cylinder 410.

[0121] A mounting hole 412 is provided on one side of the barrel portion 410 facing the connecting barrel 101. The mounting hole 412 is a blind hole, and one end of the second fastener 270 away from the first fastener 300 is received in the mounting hole 412. When the seal 400 is fixed to the second fastener 270, the end of the second fastener 270 away from the first fastener 300 can be clamped in the mounting hole 412 of the seal 400, so that the installation of the seal 400 is more firm and reliable, and the position of the seal 400 in the receiving cavity 202 is prevented from shifting, so as to improve the sealing effect of the seal 400 on the plug interface 530 of the connector 50.

[0122] In other embodiments, the seal 400 may also be other structures, for example, may be in the form of a film, as long as the seal 400 can be fixed to the second fastener 270 and seal the plug interface 530 of the connector 50 .

[0123] See also Figure 4 , Fig.10 , Fig.13 and Fig.14 The first shell 210 and the second shell 220 further enclose a position-avoiding cavity 2007, which is located inside the pressing end 2001. A support platform 2008 is provided on the inner wall surface of at least one of the first shell 210 and the second shell 220, and the support platform 2008 is located between the position-avoiding cavity 2007 and the receiving cavity 202.

[0124] The seal 400 is disposed on the side of the support platform 2008 away from the pressing end 2001, and the position of the support platform 2008 corresponds to the position of the flange 420, wherein the correspondence means that the support platform 2008 and the flange 420 are roughly overlapped in the axial direction of the connection assembly 100, so that the support platform 2008 can provide sufficient support force for the flange 420. The support platform 2008 supports the seal 400 to prevent the seal 400 from being pushed by the connector 50 and moving in the receiving cavity 202 when mating with the connector 50, and further improves the sealing effect of the seal 400 on the plug interface 530 of the connector 50.

[0125] When the clamping ends 2002 of the first shell 210 and the second shell 220 clamp the connector 50 together, the closed end of the barrel 410 is received in the plug-in port 530 of the connector 50 , and the flange 420 is clamped between the support platform 2008 and the connector 50 to seal the plug-in port 530 of the connector 50 .

[0126] When the connecting mechanism 10 of the present application is connected to the connector 50, the second pressing end 221 is pressed, and the second pressing end 221 can overcome the elastic supporting force of the second elastic section 262b to drive the second shell 220 to rotate around the rotating shaft 230, so that the second clamping end 222 is away from the first clamping end 212. At this time, the second clamping end 222 is opened relative to the first clamping end 212, and the end of the connector 50 is placed between the first clamping end 212 and the second clamping end 222, and the mating portion 510 of the connector 50 corresponds to the locking portion 201 of the clamping assembly 200.

[0127] Then, the second pressing end 221 is released, and the elastic supporting force of the second elastic section 262b resets the second pressing end 221, and the second pressing end 221 drives the second clamping end 222 to move toward the first clamping end 212, and the second clamping end 222 is closed relative to the first clamping end 212, so that the clamping assembly 200 clamps the connector 50. At this time, the first shell 210 and the second shell 220 are surrounded by a receiving cavity 202, and the locking portion 201 and the matching portion 510 cooperate with each other to accommodate the connector 50 through the receiving cavity 202.

[0128] When the receiving cavity 202 receives the connector 50, the first elastic section 262a elastically abuts against the first pressing end 211, and the second elastic section 262b elastically abuts against the second pressing end 221, so that the first clamping end 212 and the second clamping end 222 remain closed to stably clamp the connector 50. While the receiving cavity 202 receives the connector 50, the sealing member 400 seals the end of the connector 50 to seal the insertion interface 530 of the connector 50.

[0129] In this way, the clamping assembly 200 and the connector 50 can be stably connected to each other, and the clamping assembly 200 and the connector 50 can be prevented from being separated. Since the connecting mechanism 10 has been connected to the pull rod 60 through the connecting assembly 100, when the connecting mechanism 10 is connected to the connector 50 outside the body, the pull rod 60 can pull the connector 50 through the connecting mechanism 10, so that the connector 50 enters the body through the opening of the human tissue, and then is pulled out of the body through the perforation, completing the installation operation of the connector 50.

[0130] When the connector 50 is pulled out of the body, the connection mechanism 10 needs to be separated from the connector 50 so that the connector 50 is electrically connected to the external controller. The operator presses the second pressing end 221, and the second pressing end 221 can overcome the elastic support force of the second elastic section 262b to drive the second housing 220 to rotate around the rotating shaft 230, so that the second clamping end 222 is away from the first clamping end 212. At this time, the second clamping end 222 opens relative to the first clamping end 212. At this time, the clamping assembly 200 releases the connector 50, and the connector 50 can be moved away from the first clamping end 212 and the second clamping end 222, so as to separate the connection mechanism 10 from the connector 50.

[0131] After the connection mechanism 10 is separated from the connector 50, the second pressing end 221 is released, and the second pressing end 221 drives the second clamping end 222 to reset. It is worth noting that only pressing the second pressing end 221 is used as an example for explanation here. In other embodiments, the first pressing end 211 or the first pressing end 211 and the second pressing end 221 may also be pressed, which will not be repeated here.

[0132] See also Fig.14 and Fig.15 The present application also provides a wire pulling device 1, which includes a handle 70, a pull rod 60, and a connecting mechanism 10 as in any of the above embodiments, wherein the handle 70 is disposed at one end of the pull rod 60, and the connecting assembly 100 of the connecting mechanism 10 is detachably connected to the other end of the pull rod 60. The handle 70 is detachably disposed at one end of the pull rod 60 away from the connecting assembly 100, and the connecting mechanism 10 is detachably mounted at one end of the pull rod 60 close to the connecting assembly 100. In this way, the pull rod 60 can be connected to the connector 50 through the connecting mechanism 10, and the connector 50 can be pulled out of the body.

[0133] In one embodiment, the pull rod 60 includes a rod portion 610 and a connector 620, the connector 620 and the handle 70 are arranged at opposite ends of the rod portion 610, and the connector 620 is detachably connected to the connection assembly 100. The rod portion 610 is made of stainless steel material, and the rod portion 610 can be bent to pass through the perforation of human tissue and extend into the body, and then extend out of the body through the opening of human tissue. The connector 620 is arranged at one end of the rod portion 610 away from the handle 70, and is detachably connected to the connection assembly 100 through the connector 620, such as threaded connection or snap connection. The rod portion 610 is detachably connected to the handle 70, such as threaded connection or snap connection.

[0134] In one embodiment, the wire pulling device 1 further comprises a cutter head 80, which is detachably disposed at an end of the pull rod 60 away from the handle 70. The cutter head 80 is detachably connected to the connector 620, and the cutter head 80 can form a perforation in human tissue so that the pull rod 60 can pass through the perforation and extend into the body.

[0135] When the connector 50 needs to be pulled out of the body, the blade head 80 is installed on the connector 620. The blade head 80 forms a perforation in the human tissue, and the blade head 80 drives the pull rod 60 so that the pull rod 60 passes through the perforation from the outside of the body into the outside of the body, and then extends out of the body through the opening of the human tissue. Subsequently, the blade head 80 is removed from the connector 620, and the connection assembly 100 is connected to the connector 620 to install the connection mechanism 10 on the pull rod 60.

[0136] Then, the connection mechanism 10 is connected to the connector 50 placed outside the body through the opening. After the connection is completed, the pull rod 60 is pulled, and the pull rod 60 drives the connector 50 to move through the connection mechanism 10, and the connector 50 is pulled from the opening into the body, and then pulled out of the body through the perforation. When the installation operation of the connector 50 is completed, the connection mechanism 10 is separated from the connector 50, and then the connector 50 can be electrically connected to the external controller.

[0137] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A connecting mechanism, characterized in that: It comprises a connecting assembly that can be connected to the pull rod of the wire pulling device and a clamping assembly connected to the connecting assembly, wherein: The clamping assembly includes a first shell and a second shell, each of the first shell and the second shell has a clamping end away from the connecting assembly, the clamping ends of the first shell and the second shell can jointly clamp the connector of the blood pump, at least one of the first shell and the second shell has a pressing end and a rotating part, the pressing end is away from the clamping end, the rotating part is located between the pressing end and the clamping end, and at least one of the first shell and the second shell is rotatably connected to the connecting assembly through the rotating part, wherein by pressing the pressing end, the ends of the first shell and the second shell away from the clamping end can be brought closer, and the clamping end of the first shell and the clamping end of the second shell can be separated.

2. The connection mechanism according to claim 1, characterized in that: The clamping assembly also includes an elastic member, which is fixedly connected to the connecting assembly and elastically abuts against the pressing end. The elastic member can provide an elastic supporting force to the pressing end, wherein: the elastic supporting force can make the ends of the first shell and the second shell away from the clamping end tend to move away from each other, and make the clamping ends of the first shell and the second shell tend to move closer to each other; or, the elastic supporting force can make the end of the first shell away from the clamping end tend to move away from the second shell, and make the clamping end of the first shell tend to move closer to the clamping end of the second shell.

3. The connection mechanism according to claim 2, characterized in that: The connecting assembly is provided with a limiting cavity; the pressing end is provided with a limiting portion extending in a direction away from the clamping end, the limiting portion is accommodated in the limiting cavity, the limiting portion can abut against the cavity wall of the limiting cavity, and when the limiting portion abuts against the cavity wall of the limiting cavity, the clamping end of the first shell and the clamping end of the second shell have a minimum distance.

4. The connection mechanism according to claim 3, characterized in that: The connecting assembly comprises a connecting tube and a connecting structure connected to the connecting tube, the connecting tube has a first connecting end connected to the pull rod and a second connecting end away from the first connecting end, and the connecting structure is connected to the second connecting end; At least one of the first shell and the second shell is rotatably connected to the connecting structure through the rotating portion, and the elastic member is fixedly connected to the connecting structure; The second connecting end of the connecting tube is provided with a limiting wall, and the limiting wall surrounds the central axis of the connecting tube to form the limiting cavity; A docking groove is provided on the outer wall of the limiting portion, and the limiting wall can be accommodated in the docking groove. When the limiting wall is accommodated in the docking groove, the groove wall of the docking groove fits with the inner surface of the limiting wall, and the outer surface of the limiting wall is coplanar with the outer surface of the clamping assembly.

5. The connection mechanism according to claim 2, characterized in that: The elastic member includes a fixed section and an elastic section connected to the fixed section, the fixed section is fixedly connected to the connecting component, the elastic section is located between the connecting component and the inner wall surface of the pressing end, and the elastic section is bent relative to the fixed section; one end of the elastic section away from the fixed section is against the pressing end.

6. The connection mechanism according to claim 5, characterized in that: The connecting mechanism also includes at least one of the following features: The elastic section extends from the fixed section toward the pressing end to be inclined relative to the inner wall surface of the pressing end; The angle between the elastic section and the fixed section is an obtuse angle; The angle between the elastic section and the inner wall surface of the pressing end is an acute angle; The inner wall surface of the pressing end is provided with a limiting groove, and at least part of the elastic section is accommodated in the limiting groove; The elastic section is a spring sheet structure.

7. The connection mechanism according to claim 1, characterized in that: The connecting assembly includes a connecting tube and a connecting structure connected to the connecting tube, the connecting structure includes a first fastener and a second fastener, the first fastener is passed through the connecting tube, the second fastener is connected to the first fastener, and the second fastener is at least partially located between the first shell and the second shell; the connecting mechanism also includes a rotating shaft connected to the second fastener, the rotating shaft is passed through the rotating part, and is rotatably connected to at least one of the first shell and the second shell.

8. The connection mechanism according to claim 7, characterized in that: The connection mechanism further includes a sealing member, which is sleeved on the second fastener and located between the first shell and the second shell, and which can be sealed and connected to the end of the connector; And / or, the clamping assembly also includes an elastic member, which is clamped and fixed between the first fastener and the second fastener, and the elastic member elastically abuts against the pressing end. The elastic member can provide an elastic supporting force to the pressing end so that the pressing end has a tendency to open outward relative to the connecting structure.

9. The connection mechanism according to claim 7, characterized in that: A support platform is provided on the inner wall surface of at least one of the first shell and the second shell, and the connecting mechanism also includes a sealing member, which has a cylindrical portion with an open end and a closed end, and a flange arranged around the open end of the cylindrical portion, and the cylindrical portion has a bottom opposite to the opening; the second fastener portion is partially accommodated in the cylindrical portion and abuts against the bottom of the cylindrical portion, and the position of the flange corresponds to the position of the support platform; when the clamping ends of the first shell and the second shell jointly clamp the connector, the closed end of the cylindrical portion is accommodated in the plug-in interface of the connector, and the flange is clamped between the support platform and the connector to seal the plug-in interface of the connector.

10. A wire pulling device, characterized in that: It comprises a pull rod and a connecting mechanism as claimed in any one of claims 1 to 9, wherein the pull rod is detachably connected to the connecting assembly.

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