Connection mechanism and guy device

Abstract

The application relates to a connecting mechanism and a pull wire device. The connecting mechanism comprises a proximal connecting piece, a distal connecting piece and a locking assembly. A first connecting end of the proximal connecting piece is connectable with a pull rod of the pull wire device. The distal connecting piece is connected to a second connecting end of the proximal connecting piece. A receiving cavity of the distal connecting piece is capable of receiving at least part of a connector of a blood pump, and a cavity wall of the receiving cavity is capable of being clamped with the connector. The distal connecting piece comprises a first shell and a second shell. The first shell is connected with the proximal connecting piece. One side of the second shell is rotationally connected with the first shell. The other side of the second shell is capable of being opened or closed relative to the first shell. The second shell is opened relative to the first shell, so that the distal connecting piece is separated from the connector. The locking assembly is capable of locking the first shell and the second shell, so as to keep the second shell closed relative to the first shell. The connecting mechanism and the pull wire device can be conveniently connected or separated from the connector during surgery, and the situation of rotation slippage is avoided.

Description

TECHNICAL FIELD

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

[0002] After a blood pump is implanted into a patient, the connector of the blood pump needs to be pulled out of the body to enable the blood pump to be electrically connected to an external controller. Usually, an operator uses a pull wire device to pass through the human tissue and connect with the connector to pull out the connector of the blood pump. After the connector is pulled out of the body, the pull wire device is separated from the connector. However, the current pull wire device and the connector may be difficult to separate. SUMMARY

[0003] Therefore, it is necessary to provide a connecting mechanism and a pull wire device to solve the problem that the current pull wire device and the connector are difficult to separate, which can facilitate the connection or separation with the connector during surgery and avoid rotation slippage.

[0004] In a first aspect, the present application provides a connecting mechanism, comprising:

[0005] a proximal connecting piece, the proximal connecting piece having opposite first and second connecting ends, the first connecting end being connectable with a pull rod of a pull wire device;

[0006] a distal connecting piece, the distal connecting piece being connected to the second connecting end, the distal connecting piece having a receiving cavity, the receiving cavity being capable of receiving at least part of a connector of a blood pump, and a cavity wall of the receiving cavity being capable of being engaged with the connector to enable the distal connecting piece to be connected to the connector; the distal connecting piece comprising a first housing and a second housing, the first housing being connected to the proximal connecting piece, one side of the second housing being rotationally connected to the first housing, and the other side of the second housing being capable of being opened or closed relative to the first housing; wherein the second housing is closed relative to the first housing to enable the first housing and the second housing to enclose the receiving cavity, and the second housing is opened relative to the first housing to enable the distal connecting piece to be separated from the connector; and

[0007] a locking assembly, the locking assembly being capable of locking the first housing and the second housing to maintain the closure of the second housing relative to the first housing.

[0008] In an embodiment of the present application, the first shell has a first lug, the second shell has a second lug, and the distal connecting member further comprises a connecting shaft, the connecting shaft is arranged through the first lug and the second lug, and the connecting shaft is rotatable relative to at least one of the first lug and the second lug, so that the second shell is rotatable relative to the first shell, and the second shell is capable of being opened or closed relative to the first shell.

[0009] And / or, the second shell has a rotation axis relative to the first shell, and the rotation axis is parallel to the axial direction of the proximal connecting member.

[0010] And / or, the locking assembly is arranged on at least one of the first shell and the second shell.

[0011] In an embodiment of the present application, the locking assembly comprises a clamping plate and a locking plate, the clamping plate comprises a rotating portion, a connecting portion and a clamping portion, the connecting portion is arranged between the rotating portion and the clamping portion, and the connecting portion is connected with the rotating portion and the clamping portion, the rotating portion is rotatably connected with the second shell, and the clamping portion is capable of being clamped on the outer circumferential surface of the second shell; the locking plate has opposite first and second end portions, the first end portion is rotatably connected with the connecting portion, the second end portion is provided with a buckle, the first shell is provided with a clamping groove, and the buckle is capable of being clamped with the clamping groove; when the clamping portion is clamped on the outer circumferential surface of the second shell and the buckle is clamped with the clamping groove, the locking assembly locks the first shell and the second shell.

[0012] In an embodiment of the present application, the outer circumferential surface of the first shell has a first mounting groove, the locking plate is capable of being accommodated in the first mounting groove, and the clamping groove is arranged on the groove bottom surface of the first mounting groove; the outer circumferential surface of the second shell has a second mounting groove, the clamping plate is capable of being accommodated in the second mounting groove, and the first mounting groove and the second mounting groove are capable of being communicated when the second shell is closed relative to the first shell.

[0013] In an embodiment of the present application, the outer circumferential surface of the second shell further has a first avoiding groove for fingers or operating tools to extend into, the first avoiding groove is communicated with the second mounting groove, and the first avoiding groove is close to an end of the clamping portion away from the rotating portion when the clamping portion is clamped on the outer circumferential surface of the second shell; and / or, the clamping plate has an inner surface facing the second mounting groove, the inner surface is provided with a second avoiding groove for fingers or operating tools to extend into, and the second avoiding groove is arranged at an end of the clamping portion away from the rotating portion.

[0014] In an embodiment of the present application, the inner wall of the first shell is provided with a mounting portion, which is arranged at one end of the first shell close to the proximal connector; wherein the side portion of the mounting portion is rotationally connected with the second shell; the middle portion of the mounting portion is provided with an assembly hole; the connecting mechanism further comprises a fastener, which is arranged in the second connecting end of the proximal connector and assembled in the assembly hole.

[0015] In an embodiment of the present application, the connecting mechanism further comprises a sealing member, which is accommodated in the accommodation cavity, and the sealing member can be sealingly connected with the end portion of the connector, wherein:

[0016] the sealing member is fixedly connected with the inner wall of at least one of the first shell and the second shell; and / or the first shell comprises a mounting portion protruding from the inner wall thereof, which is arranged at one end of the first shell close to the proximal connector, and the side portion of the mounting portion away from the proximal connector has a mounting hole, and the sealing member is provided with a mounting protrusion embedded in the mounting hole.

[0017] In an embodiment of the present application, the connecting mechanism further comprises a sealing member accommodated in the accommodation cavity, and the sealing member is provided with a central boss and an annular sealing portion arranged around the central boss, the central boss can be insertedly matched with the port of the connector, and the annular sealing portion can be sealingly abutted with the end surface of the connector.

[0018] In an embodiment of the present application, the central boss is provided with a central groove formed by the inward recess of the end surface of the central boss; and / or the outer periphery of the sealing member is provided with an annular groove arranged around the central axis of the central boss; and / or the material of the sealing member is silica gel or rubber.

[0019] In a second aspect, the present application provides a pull wire device, which comprises a pull rod and any of the above connecting mechanisms, and the pull rod is detachably connected with the proximal connector.

[0020] After adopting the above technical solutions, the present application has at least the following technical effects:

[0021] The connecting mechanism and the stay wire device of the application, one side of the second shell of the distal end connecting piece of the connecting mechanism is rotationally connected with the first shell, the other side of the second shell can be opened or closed relative to the first shell, the locking assembly can lock the first shell and the second shell to keep the second shell closed relative to the first shell, when the second shell is closed relative to the first shell, the two shells enclose a receiving cavity capable of receiving at least part of the connector, and the cavity wall of the receiving cavity is clamped with the connector, so that the distal end connecting piece is connected to the connector; the second shell is opened relative to the first shell, the receiving cavity is opened, and the connector can be separated from the first shell and the second shell, so that the connecting mechanism and the connector are separated. Compared with the traditional way of separating the connecting mechanism and the connector by rotating the entire connecting mechanism, the application can separate the connecting mechanism and the connector by opening the second shell relative to the first shell, without the need for additional rotation of the entire connecting mechanism, thereby avoiding the situation of rotation slip, facilitating the separation of the connecting mechanism and the connector, and being safer to operate. In addition, the first shell and the second shell are locked and fixed by the locking assembly to improve the reliability of the connection between the connecting mechanism and the connector, thereby avoiding the situation that the connector and the connecting mechanism are separated during the process of pulling the connector. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The structure schematic diagram of the connecting mechanism provided by the application in one perspective view.

[0023] Figure 2 The structure schematic diagram of the connecting mechanism provided by the application in another perspective view. Figure 1

[0024] Figure 3 The sectional view along the direction of A-A. Figure 2

[0025] Figure 4 The structure schematic diagram of the connecting mechanism and the connector after connection, and the second shell is opened relative to the first shell. Figure 1

[0026] Figure 5 The structure schematic diagram of the connector. Figure 4

[0027] Figure 6 The structure schematic diagram of the connecting mechanism in another perspective view. Figure 1

[0028] Figure 7 The exploded view of the connecting mechanism. Figure 1

[0029] Figure 8 The structure schematic diagram of the connecting mechanism in another perspective view. Figure 7 ​​​​​​​

[0030] Figure 9 for Figure 7 The diagram shows the structure of the first shell from one perspective.

[0031] Figure 10 for Figure 9 The diagram shows the structure of the first shell from another perspective.

[0032] Figure 11 for Figure 7 The diagram shows the structure of the second shell from one perspective.

[0033] Figure 12 for Figure 11 The diagram shows the structure of the second shell from another perspective.

[0034] Figure 13 for Figure 1 The diagram shows the connection mechanism in the unlocked state of the locking component.

[0035] Figure 14 for Figure 13 The diagram shows the connection mechanism from another perspective.

[0036] Figure 15 for Figure 13 The diagram shows the structure of the locking assembly of the connecting mechanism.

[0037] Figure 16 for Figure 1 The diagram shows the structure of the seal of the connecting mechanism.

[0038] Figure 17 This is a schematic diagram of the structure of the pull wire device and connector provided in this application.

[0039] Figure 18 for Figure 17 The diagram shows the structure of the pull rod and the cutter head of the pull wire device.

[0040] Wherein: 1, pull wire device; 10, connecting mechanism; 100, proximal connector; 110, first connecting end; 120, second connecting end; 101, first connecting hole; 102, second connecting hole; 200, distal connector; 201, clamping part; 202, accommodating cavity; 203, opening; 210, first shell; 211, first end face; 2111, accommodating groove; 212, second end face; 213, first lug; 2131, first shaft hole; 214, first inner side face; 215, first outer peripheral face; 216, clamping groove; 217, first mounting groove; 218, mounting part; 2181, assembly hole; 2182, mounting hole; 220, second shell; 221, third end face; 222, fourth end face; 223, second lug; 2231, second shaft hole; 224, second inner side face; 225, second outer peripheral face; 226, second mounting groove; 227, first avoiding groove; 230, connecting rotating shaft; 240, third connecting end; 250, fourth connecting end; 260, sealing member; 261, mounting protrusion; 262, center boss; 2621, center groove; 263, annular sealing part; 264, annular groove; 300, fastener; 400, locking assembly; 410, locking plate; 411, first end part; 412, second end part; 413, buckle; 420, buckling plate; 4201, rotating part; 4202, connecting part; 4203, buckling part; 423, second avoiding groove; 424, inner surface; 430, first pin shaft; 440, second pin shaft; 50, connector; 501, end face; 510, matching part; 520, shell face; 530, port; 60, pull rod; 610, rod part; 620, connecting head; 70, handle; 80, tool bit; O, rotating axis. DETAILED DESCRIPTION

[0041] In order to make the above objectives, features and advantages of the present application more clear and easy to understand, the specific embodiments of the present application are described in detail below in conjunction with the drawings. In the following description, a lot of specific details are set forth in order to fully understand 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 departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0042] In addition, if there are these terms "first", "second", these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, if the term "a plurality of" appears, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0043] It should be noted that "distal" and "proximal" in the full text are only used to represent relative position relationship, "distal" of a component refers to the end of the component which enters the patient's body first and / or is farther away from the operator during normal operation, while "proximal" refers to the end which enters the patient's body later and / or is closer to the operator.

[0044] After the blood pump is implanted in the patient's body, the connector of the blood pump needs to be pulled out of the body to make the blood pump electrically connected with the external controller. Usually, the operator uses a pull wire device to connect with the connector to pull out the connector of the blood pump, and then separates the pull wire device from the connector. However, the connection mechanism in the current pull wire device is connected with the connector in a rotating manner, and when the connection mechanism is separated from the connector, the whole connection mechanism needs to be rotated. However, the operator (especially when wearing gloves) is easy to slip when rotating the connection mechanism, which leads to the separation difficulty between the connection mechanism and the connector, and the operation is not safe enough.

[0045] Therefore, the present application provides a connection mechanism for connecting medical devices to pull the medical devices out of the body or to the target position in the body. Optionally, the connection mechanism can connect the pull rod of the pull wire device and the connector of the blood pump (not shown) to pull the connector out of the body, so that the blood pump is electrically connected with the 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, components to be implanted or components to be pulled out.

[0046] Referring to Figures 1 to 5 , the present application only takes the connection between the connection mechanism 10 and the connector 50 (as shown in Figure 5 ) as an example for description. The connection mechanism 10 can facilitate the connection or separation between the connection mechanism 10 and the connector 50 during the operation, avoid the rotation slip, shorten the connection or separation time between the connection mechanism 10 and the connector 50, and improve the operation safety. The specific structure of the connection mechanism 10 in an embodiment is introduced below. The structure and principle of the pull wire device 1 are briefly introduced here. As shown in Figure 17 , the pull wire device 1 includes a pull rod 60, a handle 70 and the connection mechanism 10 in the present application, the handle 70 is arranged at one end of the pull rod 60, and the other end of the pull rod 60 is detachably installed with the connection mechanism 10.

[0047] Referring to Figures 1 to 3In an embodiment, the connecting mechanism 10 comprises a proximal connecting member 100, a distal connecting member 200 and a locking assembly 400. The proximal connecting member 100 has opposite first and second connecting ends 110 and 120, and the first connecting end 110 is connectable to the pull rod 60 of the pull wire device 1, for example, by screwing, clamping or other connecting means. The distal connecting member 200 is connected to the second connecting end 120, and has a receiving cavity 202 capable of receiving at least a part of the connector 50 of the blood pump, and the cavity wall of the receiving cavity 202 is capable of clamping the connector 50 so as to connect the distal connecting member 200 to the connector 50. The distal connecting member 200 comprises a first housing 210 and a second housing 220, the first housing 210 is connected to the proximal connecting member 100, and one side of the second housing 220 is rotatably connected to the first housing 210, and the other side of the second housing 220 is capable of being opened or closed relative to the first housing 210. Wherein, the second housing 220 is closed relative to the first housing 210 so as to enclose the receiving cavity 202 by the first housing 210 and the second housing 220; and the second housing 220 is opened relative to the first housing 210 so as to separate the distal connecting member 200 from the connector 50. The locking assembly 400 is capable of locking the first housing 210 and the second housing 220 so as to keep the second housing 220 closed relative to the first housing 210.

[0048] The connecting mechanism 10 of the above embodiment is rotatably connected with the first shell 210 through one side of the second shell 220, and the other side of the second shell 220 can be closed or opened relative to the first shell 210. The locking assembly 400 can lock the first shell 210 and the second shell 220 to keep the second shell 220 closed relative to the first shell 210. When the second shell 220 is closed relative to the first shell 210, the first shell 210 and the second shell 220 can be connected and fixed, so that the first shell 210 and the second shell 220 form a receiving cavity 202 capable of receiving at least part of the connector 50, and the cavity wall of the receiving cavity 202 can be clamped with the connector 50, so that the distal end connecting piece 200 is connected to the connector 50. When the second shell 220 is opened relative to the first shell 210, the receiving cavity 202 is opened, and the connector 50 can be separated from the first shell 210 and the second shell 220, so that the connecting mechanism 10 is separated from the connector 50. Compared with the traditional way of separating the connecting mechanism from the connector by rotating the entire connecting mechanism, the present application can separate the connecting mechanism 10 from the connector 50 by opening the second shell 220 relative to the first shell 210, without the need for additional rotation of the entire connecting mechanism, thereby avoiding the situation of rotation slipping, facilitating the separation of the connecting mechanism 10 from the connector 50, and improving the safety of operation. In addition, the first shell 210 and the second shell 220 are locked and fixed by the locking assembly 400 to improve the reliability of the connection between the connecting mechanism 10 and the connector 50, thereby avoiding the situation that the connector 50 is separated from the connecting mechanism 10 during the process of pulling the connector 50, and facilitating the pulling of the connector 50 out of the body by the pulling wire device 1 through the connecting mechanism 10.

[0049] The proximal end connecting piece 100 is a component for connecting the connecting mechanism 10 and the pull rod 60, and the proximal end connecting piece 100 is detachably connected with the pull rod 60 through the first connecting end 110. When the connector 50 needs to be pulled, the proximal end connecting piece 100 is installed on the pull rod 60 to realize the connection between the connecting mechanism 10 and the pull rod 60, as shown in Figure 17 , and then the pulling wire device 1 can be pulled. After the pulling is completed, the proximal end connecting piece 100 is detached from the pull rod 60, and the proximal end connecting piece 100 and the distal end connecting piece 200 can be reliably connected through screw fixing or other ways to avoid separation of the proximal end connecting piece 100 and the distal end connecting piece 200 during the pulling process of the pull rod 60.

[0050] Referring to Figure 1 and Figure 17 , optionally, the proximal end connecting piece 100 is substantially cylindrical, so that the outer peripheral surface of the proximal end connecting piece 100 is smooth and does not have edges, and when the pull rod 60 pulls the connector 50 through the connecting mechanism 10, the outer peripheral surface of the proximal end connecting piece 100 will not scratch the human tissue, thereby avoiding damage to the human tissue.

[0051] Referring toFigure 3 and Figure 4 Optionally, the first connecting end 110 is provided with a first connecting hole 101, and the end of the pull rod 60 is accommodated in the first connecting hole 101 and detachably connected with the hole wall of the first connecting hole 101. Optionally, the proximal end connecting piece 100 is connected with the pull rod 60 through a thread connection. Of course, in other embodiments of the present application, the proximal end connecting piece 100 can also be connected with the pull rod 60 through a clamping or other mode, as long as the detachable connection between the proximal end connecting piece 100 and the pull rod 60 can be achieved.

[0052] Optionally, the second connecting end 120 has a second connecting hole 102, the second connecting hole 102 is in communication with the first connecting hole 101, and the diameter of the second connecting hole 102 is smaller than the diameter of the first connecting hole 101. That is, the first connecting hole 101 and the second connecting hole 102 are in communication along the axial direction of the proximal end connecting piece 100 and pass through the proximal end connecting piece 100.

[0053] In the present embodiment, the axial direction of the proximal end connecting piece 100 refers to the extension direction of the central axis of the proximal end connecting piece 100; the radial direction of the proximal end connecting piece 100 refers to the radius or diameter direction of the circular cross section of the proximal end connecting piece 100, and the direction is perpendicular to the axial direction of the proximal end connecting piece 100; the circumferential direction of the proximal end connecting piece 100 refers to the circumferential direction of the circular cross section of the proximal end connecting piece 100.

[0054] The distal end connecting piece 200 is a component for connecting the connecting mechanism 10 and the connector 50, and the distal end connecting piece 200 can be detachably connected with the connector 50.

[0055] Referring to Figure 1 , Figure 3 and Figure 6 In an embodiment, the distal end connecting piece 200 has opposite third connecting end 240 and fourth connecting end 250 along the axial direction of the proximal end connecting piece 100, the third connecting end 240 is connected with the proximal end connecting piece 100, specifically, the third connecting end 240 is connected with the second connecting end 120, and the fourth connecting end 250 is connected with or separated from the connector 50. The third connecting end 240 is located at one end of the first housing 210 and one end of the second housing 220; the fourth connecting end 250 is located at the other end of the first housing 210 and the other end of the second housing 220. Referring to Figure 1 , Figure 3 , Figure 6 The connector 50 can be mounted to the fourth connecting end 250 or separated from the fourth connecting end 250 to achieve the connection or separation of the connector 50 and the distal end connecting piece 200.

[0056] The receiving cavity 202 is located at the fourth connecting end 250, allowing the connector 50 to be connected to the fourth connecting end 250. This enables the connection between the connecting mechanism 10 and the connector 50, facilitating the subsequent pulling of the connector 50 out of the body by the pull rod 60. After the connector 50 is pulled out of the body, it can be detached from the fourth connecting end 250, thus separating the connecting mechanism 10 from the connector 50. The receiving cavity 202 also has an opening 203 for the connector 50 to enter, allowing the connector 50 to be received in the receiving cavity 202 through the opening 203.

[0057] The first housing 210 and the second housing 220 extend axially along the proximal connector 100. Both the first housing 210 and the second housing 220 have a semi-cylindrical structure. After installation, the first housing 210 and the second housing 220 can form a complete cylindrical distal connector 200 for connection with the connector 50. Specifically, the first housing 210 and the second housing 220 are rotatably connected, allowing the second housing 220 to close or open relative to the first housing 210.

[0058] See Figure 1 , Figure 3 and Figure 4 In one embodiment, the second housing 220 has a rotation axis O relative to the first housing 210, and the direction of the rotation axis O is parallel to the axial direction of the proximal connector 100. The second housing 220 is rotatable relative to the first housing 210 about the rotation axis O, so that the second housing 220 can be closed or opened relative to the first housing 210.

[0059] In this embodiment, the extension direction of the rotation axis O is parallel to the axial direction of the proximal connector 100, that is, the rotation axis O extends along... Figure 3 The vertical extension shown ensures that when the second housing 220 rotates relative to the first housing 210, for example, when the second housing 220 opens relative to the first housing 210, the second housing 220 will not collide with the proximal connector 100, allowing the second housing 220 to open smoothly relative to the first housing 210. In other embodiments, the rotation axis O may also deviate from the axial direction of the proximal connector 100 by a certain angle, for example, the angle of deviation shall not exceed 5°.

[0060] In this embodiment, the second housing 220 is rotatably connected to the first housing 210. Thus, after the second housing 220 rotates relative to the first housing 210, the second housing 220 closes or opens relative to the first housing 210. Of course, in other embodiments of this application, the first housing 210 may rotate relative to the second housing 220, or the first housing 210 and the second housing 220 may rotate relative to each other. The principle is essentially the same as the principle of the second housing 220 rotating relative to the first housing 210, and will not be described again below.

[0061] When the second shell 220 is closed relative to the first shell 210, the first shell 210 and the second shell 220 can form a complete cylindrical structure. At this time, the first shell 210 and the second shell 220 surround a hollow receiving cavity 202, which is located at an end of the distal connector 200 away from the proximal connector 100. The receiving cavity 202 can accommodate the connector 50 to fix the connector 50 to the first shell 210 and the second shell 220, so as to realize reliable connection of the connector 50 and the connection mechanism 10, and facilitate later pulling of the connector 50.

[0062] When the second shell 220 is opened relative to the first shell 210, the receiving cavity 202 is opened, and an opening is formed between the first shell 210 and the second shell 220. At this time, the connector 50 can be removed from between the first shell 210 and the second shell 220, so as to realize separation of the connector 50 and the connection mechanism 10, as shown in Figure 4

[0063] Referring to Figure 1 , Figure 7 and Figure 8 , in an embodiment, the first shell 210 has a first end face 211 and a second end face 212 along the circumference of the proximal connector 100. The second shell 220 has a third end face 221 and a fourth end face 222 along the circumference of the proximal connector 100. When the first shell 210 and the second shell 220 are closed, the first end face 211 is opposite the third end face 221, and the second end face 212 is opposite the fourth end face 222. When the second shell 220 is closed or opened relative to the first shell 210, the fourth end face 222 can be close to or away from the second end face 212. After the second shell 220 is closed relative to the first shell 210, a complete cylindrical structure can be formed, and a receiving cavity 202 is formed inside the cylindrical structure to accommodate the connector 50, so as to realize stable connection of the connection mechanism 10 and the connector 50.

[0064] Along the circumference of the proximal connector 100, the two end faces of the first shell 210 are the first end face 211 and the second end face 212, and the first end face 211 and the second end face 212 also extend along the axial direction of the proximal connector 100. Along the circumference of the proximal connector 100, the two end faces of the second shell 220 are the third end face 221 and the fourth end face 222, and the third end face 221 and the fourth end face 222 also extend along the axial direction of the proximal connector 100.

[0065] The second shell 220 is rotatably connected to the first shell 210, and the third end face 221 of the second shell 220 is rotatably connected to the first end face 211 of the first shell 210. In this way, when the second shell 220 rotates relative to the first shell 210, the second shell 220 can drive the fourth end face 222 to be close to or away from the second end face 212 of the first shell 210. ​

[0066] Referring to Figure 3 , Figure 6 , Figure 10 and Figure 12 In an embodiment, the distal connector 200 further comprises a connecting shaft 230, the first housing 210 has a first lug 213, the second housing 220 has a second lug 223, the connecting shaft 230 is disposed in the first lug 213 and the second lug 223, and the connecting shaft 230 is rotatable relative to at least one of the first lug 213 and the second lug 223, so that the second housing 220 is rotatable relative to the first housing 210, and the second housing 220 is openable or closable relative to the first housing 210.

[0067] Specifically, the second lug 223 is disposed on the third end surface 221. The extending direction of the connecting shaft 230 is parallel to the axial direction of the proximal connector 100. In some embodiments, the first lug 213 has a first shaft hole 2131, the second lug 223 has a second shaft hole 2231, and the connecting shaft 230 is rotatably disposed in the first shaft hole 2131 and the second shaft hole 2231. In some embodiments, the second housing 220 is rotatable about the connecting shaft 230, i.e., the connecting shaft 230 is rotatable relative to the second housing 220, and is fixedly connected to the first lug 213 of the first housing 210, so that the second housing 220 is rotatable relative to the first housing 210. Of course, in other embodiments, the second housing 220 can drive the connecting shaft 230 to rotate relative to the first housing 210, i.e., the connecting shaft 230 is rotatable relative to the first housing 210, and is fixedly connected to the second lug 223 of the second housing 220.

[0068] The first end surface 211 has a receiving groove 2111, and the second lug 223 protrudes from the third end surface 221 and is installable in the receiving groove 2111.

[0069] Referring to Figure 4 , Figure 5 , Figure 10 and Figure 12 In an embodiment, at least one of the inner wall of the first housing 210 and the inner wall of the second housing 220 has an engaging portion 201, and the outer wall of the connector 50 is provided with a matching portion 510 corresponding to the engaging portion 201. When the second housing 220 is closed relative to the first housing 210, the engaging portion 201 and the matching portion 510 are in clamping engagement. One of the engaging portion 201 and the matching portion 510 is a protrusion, and the other is a groove matched with the protrusion.

[0070] The inner side surface of the first housing 210 is a first inner side surface 214, which connects the first end surface 211 and the second end surface 212 on the inner side of the first housing 210, as Figure 10The inner side surface of the second housing 220 is a second inner side surface 224, which connects the third end surface 221 and the fourth end surface 222 on the inner side of the second housing 220, as shown in Figure 12 Correspondingly, the connector 50 has a housing surface 520, as shown in Figure 5 After the accommodation cavity 202 accommodates the connector 50, the housing surface 520 abuts against the first inner side surface 214 and the second inner side surface 224, so that the first housing 210 and the second housing 220 can clamp the connector 50, thereby improving the reliability of the connection between the connection mechanism 10 and the connector 50.

[0071] The clamping portion 201 is arranged on at least one of the first inner side surface 214 and the second inner side surface 224, and correspondingly, the matching portion 510 is arranged on the housing surface 520, and the position of the clamping portion 201 corresponds to the position of the matching portion 510. In this way, after the accommodation cavity 202 accommodates the connector 50, the clamping portion 201 and the matching portion 510 match with each other, thereby realizing the stable connection between the connection mechanism 10 and the connector 50 and improving the connection strength between the connection mechanism 10 and the connector 50.

[0072] Referring to Figure 5 , Figure 6 , Figure 10 and Figure 12 In this embodiment, the first inner side surface 214 and the second inner side surface 224 both have the clamping portion 201, and correspondingly, the housing surface 520 is provided with two matching portions 510, and the two matching portions 510 correspond to the two clamping portions 201 respectively. Of course, in other embodiments of the present application, the first inner side surface 214 can be provided with the clamping portion 201, or the second inner side surface 224 can be provided with the clamping portion 201, and the housing surface 520 is provided with one matching portion 510, which corresponds to the clamping portion 201 and matches with it.

[0073] In this embodiment, the clamping portion 201 is a protrusion, which protrudes from the first inner side surface 214 and the second inner side surface 224, and correspondingly, the matching portion 510 is a groove, which is recessed in the housing surface 520. After the accommodation cavity 202 accommodates the connector 50, the protrusion is clamped in the groove. Of course, in other embodiments of the present application, the clamping portion 201 can also be a groove, which is recessed in the first inner side surface 214 and the second inner side surface 224, and the matching portion 510 is a protrusion, which protrudes from the housing surface 520.

[0074] In an embodiment, the height of the protrusion protruding is less than or equal to the depth of the groove recessing. In this way, the protrusion can be accurately clamped into the groove, avoiding that the protrusion exposes the groove and causes the housing surface 520 of the connector 50 to not effectively abut against the first inner side surface 214 and the second inner side surface 224, thereby improving the reliability of the connection between the connector 50 and the connection mechanism 10.

[0075] Referring to Figures 13 to 15In the embodiment, the locking assembly 400 is rotatably arranged on the second housing 220 and can be buckled with the first housing 210 to lock the first housing 210 and the second housing 220, thereby keeping the second housing 220 closed relative to the first housing 210. In an embodiment, the locking assembly 400 can also be arranged on the first housing 210 and the second housing 220, for example, the locking assembly 400 is sleeved on the outer periphery of the first housing 210 and the second housing 220 to keep the second housing 220 closed relative to the first housing 210.

[0076] When the connector 50 is pulled out of the body, Figure 5 ), the second housing 220 can be opened relative to the first housing 210 by unlocking the locking assembly 400, the accommodation cavity 202 is opened, and the connector 50 can be separated from the first housing 210 and the second housing 220, so that the connection mechanism 10 and the connector 50 are separated.

[0077] The locking assembly 400 has a locked state and an unlocked state. When the locking assembly 400 is in the locked state, the locking assembly 400 can lock the first housing 210 and the second housing 220, thereby fixing the first housing 210 and the second housing 220, and keeping the second housing 220 closed relative to the first housing 210. When the locking assembly 400 is in the unlocked state, the second housing 220 can be opened relative to the first housing 210. The locking assembly 400 can be switched between the locked state and the unlocked state. After the connection mechanism 10 and the connector 50 are connected, the locking assembly 400 can be switched from the unlocked state to the locked state to prevent the connector 50 and the connection mechanism 10 from being separated; when the locking assembly 400 is switched from the locked state to the unlocked state, the connector 50 can be separated from the connection mechanism 10. Specifically, the locking assembly 400 is arranged on at least one of the first housing 210 and the second housing 220, so that when the second housing 220 is opened relative to the first housing 210, the locking assembly 400 is connected with at least one of the first housing 210 and the second housing 220, that is, the locking assembly 400 will not be separated from both the first housing 210 and the second housing 220, avoiding the loss of the locking assembly 400, and facilitating the recycling of the locking assembly 400.

[0078] Continuing to refer to Figures 13 to 15 In an embodiment, the locking assembly 400 includes a buckling plate 420 and a locking plate 410. The buckling plate 420 includes a rotating portion 4201, a connecting portion 4202 and a buckling portion 4203 connected in sequence, that is, the connecting portion 4202 is located between the rotating portion 4201 and the buckling portion 4203 and is connected with both the rotating portion 4201 and the buckling portion 4203. The rotating portion 4201, the connecting portion 4202 and the buckling portion 4203 are arranged in sequence along the circumferential direction of the proximal connector 100 and also extend along the axial direction of the proximal connector 100.

[0079] The rotating portion 4201 is rotationally connected with the second shell 220, and the clamping portion 4203 can be clamped on the outer circumferential surface of the second shell 220, that is, the clamping plate 420 is clamped on the outer circumferential surface of the second shell 220. Exemplarily, the clamping plate 420 can be rotated towards the direction away from the first shell 210 to make the clamping portion 4203 clamped on the outer circumferential surface of the second shell 220.

[0080] The locking plate 410 has opposite first and second end portions 411 and 412. The first end portion 411 is rotationally connected with the connecting portion 4202, and the second end portion 412 is provided with a buckle 413. Specifically, the inner side of the second end portion 412 is provided with the buckle 413, and the first shell 210 is provided with a clamping groove 216. When the locking plate 410 is rotated towards the direction away from the second shell 220, the buckle 413 can be clamped with the clamping groove 216. When the clamping portion 4203 is clamped on the outer circumferential surface of the second shell 220 and the buckle 413 is clamped with the clamping groove 216, the locking assembly 400 locks the first shell 210 and the second shell 220. The clamping groove 216 is recessed on the outer circumferential surface of the first shell 210 and corresponds to the position of the buckle 413. The buckle 413 can be clamped in the clamping groove 216. The cooperation of the buckle 413 and the clamping plate 420 can reliably lock the second shell 220 to the first shell 210, avoiding the disconnection of the first shell 210 and the second shell 220.

[0081] Please refer to Figures 9 to 11 , the first and second end portions 411 and 412 also extend along the axial direction of the proximal connector 100. The first shell 210 has a first outer circumferential surface 215, which is the outer circumferential surface of the first shell 210. The first outer circumferential surface 215 is connected with the first and second end faces 211 and 212 on the outer side. The second shell 220 has a second outer circumferential surface 225, which is the outer circumferential surface of the second shell 220. The second outer circumferential surface 225 is connected with the third and fourth end faces 221 and 222 on the outer side.

[0082] When the locking assembly 400 is locked, the buckle 413 is aligned with the clamping groove 216, and the locking plate 410 is pushed to rotate relative to the first shell 210, so that the locking plate 410 is attached to the first outer circumferential surface 215 of the first shell 210. At the same time, the movement of the locking plate 410 can drive the clamping plate 420 to move synchronously, and then the clamping plate 420 can drive the rotating portion 4201 to rotate relative to the second shell 220, so that the clamping plate 420 is attached to the second outer circumferential surface 225 of the second shell 220. In this way, the locking assembly 400 can lock the second shell 220 to the first shell 210, and the locking assembly 400 is in the locked state.

[0083] When the locking assembly 400 is unlocked, the buckle portion 4203 of the buckle plate 420 is buckled, the rotating portion 4201 of the buckle plate 420 can rotate relative to the second shell 220, so that the buckle portion 4203 gradually moves away from the second outer circumferential surface 225, at this time, the buckle plate 420 is opened relative to the second shell 220. At the same time, the buckle plate 420 drives the locking plate 410 away from the first outer circumferential surface 215 through the rotatable first end portion 411, and then the locking plate 410 can drive the buckle 413 to disengage from the clamping groove 216, the locking plate 410 is away from the first shell 210 to be opened relative to the first shell 210, and the locking assembly 400 is in an unlocked state.

[0084] Referring to Figure 13 In an embodiment, the buckle plate 420 and the locking plate 410 are both arc-shaped plate structures. When the locking assembly 400 locks the second shell 220 to the first shell 210, the locking plate 410 can be attached to the first outer circumferential surface 215 of the first shell 210, and the buckle plate 420 can be attached to the second outer circumferential surface 225 of the second shell 220, thereby improving the reliability of the locking of the locking assembly 400 and avoiding accidental contact of the locking plate 410 from the first shell 210 and the buckle plate 420 from the second shell 220. At the same time, the arc-shaped buckle plate 420 and the locking plate 410 can also adapt to the shape of the first shell 210 and the second shell 220.

[0085] Referring to Figure 9 , Figure 11 and Figure 14 In an embodiment, the first outer circumferential surface 215 has a first mounting groove 217, and the locking plate 410 can be accommodated in the first mounting groove 217, and the clamping groove 216 is arranged on the groove bottom surface of the first mounting groove 217. The first mounting groove 217 is recessed on the first outer circumferential surface 215, and the first mounting groove 217 extends along the circumferential direction of the proximal connector 100. The first mounting groove 217 provides a mounting space for the locking plate 410, and the locking plate 410 does not need to be arranged on the outside of the first shell 210. In this embodiment, the first mounting groove 217 extends along the circumferential direction of the proximal connector 100. In other embodiments, the first mounting groove 217 can also extend along the axial direction of the proximal connector 100, or extend along other directions, as long as it can accommodate the locking plate 410.

[0086] When the second shell 220 is closed relative to the first shell 210, the locking plate 410 can be accommodated in the first mounting groove 217, so that the locking plate 410 does not protrude outward in the radial direction of the proximal connector 100, and when the pull wire device 1 pulls the connector 50 through the connecting mechanism 10, the connecting mechanism 10 will not scratch the human tissue, and the overall structure is more compact and occupies less space. Moreover, the clamping groove 216 is located on the groove bottom surface of the first mounting groove 217, and when the locking plate 410 is accommodated in the first mounting groove 217, the buckle 413 can be buckled in the clamping groove 216.

[0087] Referring to Figure 9 , Figure 11 and Figure 14 , in an embodiment, the second outer circumferential surface 225 has a second mounting groove 226, the buckle plate 420 can be accommodated in the second mounting groove 226, and the first mounting groove 217 and the second mounting groove 226 can be in communication when the second housing 220 is closed relative to the first housing 210. The second mounting groove 226 is recessed in the second outer circumferential surface 225, and extends along the circumference of the proximal connector 100. The second mounting groove 226 provides mounting space for the buckle plate 420, and the buckle plate 420 does not need to be arranged on the outside of the second housing 220. In the present embodiment, the second mounting groove 226 extends along the circumference of the proximal connector 100. In other embodiments, the second mounting groove 226 can also extend along the axis of the proximal connector 100, or extend in other directions, as long as it can accommodate the buckle plate 420.

[0088] When the second housing 220 is closed relative to the first housing 210, the buckle plate 420 can be accommodated in the second mounting groove 226, so that the buckle plate 420 does not protrude outward in the radial direction of the proximal connector 100, and the connecting mechanism 10 does not scratch the human tissue when the pull wire device 1 pulls the connector 50 through the connecting mechanism 10, and the overall structure is more compact and occupies less space. When the second housing 220 is closed relative to the first housing 210, the first mounting groove 217 and the second mounting groove 226 are in communication, so that when the locking assembly 400 locks the second housing 220 to the first housing 210, part of the locking plate 410 is located in the first mounting groove 217, and part of the locking plate 410 is located in the second mounting groove 226.

[0089] Optionally, the thickness of the locking plate 410 in the radial direction of the proximal connector 100 is adapted to the depth of the recess of the first mounting groove 217. In this way, after the locking plate 410 is mounted in the first mounting groove 217, the locking plate 410 does not protrude from the first outer circumferential surface 215. Optionally, the thickness of the buckle plate 420 in the radial direction of the proximal connector 100 is adapted to the depth of the recess of the second mounting groove 226. In this way, after the buckle plate 420 is mounted in the second mounting groove 226, the buckle plate 420 does not protrude from the second outer circumferential surface 225.

[0090] Referring to Figure 1 , Figure 2 and Figure 6 , in an embodiment, the first outer circumferential surface 215 is smoothly transitioned with the outer circumferential surface of the second housing 220 (i.e., the second outer circumferential surface 225) when the second housing 220 is closed relative to the first housing 210. That is, when the second housing 220 is closed relative to the first housing 210, the first housing 210 and the second housing 220 can form a complete cylindrical distal connector 200, without protrusions at the connection, avoiding scratching of human tissue.

[0091] Referring to Figure 6 , Figure 8 and Figure 17 , in an embodiment, the second outer circumferential surface 225 further has a first avoiding groove 227 for a finger or an operating tool to extend into, the first avoiding groove 227 is recessed in the second outer circumferential surface 225, the first avoiding groove 227 is in communication with the second mounting groove 226, and when the fastening portion 4203 is fastened to the outer circumferential surface of the second shell 220, the first avoiding groove 227 is close to an end of the fastening portion 4203 away from the rotating portion 4201. Wherein, the operating tool can be a tool with a smaller end, such as a screwdriver, which is sufficient to extend into the first avoiding groove 227. After the clamping plate 420 is installed in the second mounting groove 226, the first avoiding groove 227 is located on the side of the fastening portion 4203.

[0092] The first avoiding groove 227 can allow the fingers of the operator or the operating tool to extend in, so as to facilitate the fingers or the operating tool to fasten the fastening portion 4203 of the clamping plate 420, and realize the unlocking of the locking assembly 400. The second mounting groove 226 can increase the space of the first avoiding groove 227, and facilitate the fingers or the operating tool of the operator to extend in.

[0093] Exemplarily, when the locking assembly 400 needs to be unlocked, the fingers of the operator can extend into the first avoiding groove 227, and then extend to the fastening portion 4203 of the clamping plate 420. At this time, the fingers can fasten the fastening portion 4203 of the clamping plate 420, so as to make the clamping plate 420 open relative to the second shell 220, thereby unlocking the second shell 220 from the first shell 210, and facilitating the separation of the connecting mechanism 10 and the connector 50.

[0094] Referring to Figure 6 and Figure 15 , in an embodiment, the clamping plate 420 has an inner surface 424 facing the second mounting groove 226, the inner surface 424 is provided with a second avoiding groove 423, and the second avoiding groove 423 is arranged at an end of the fastening portion 4203 away from the rotating portion 4201. The surface of the clamping plate 420 facing the second mounting groove 226 is the inner surface 424, the second avoiding groove 423 is recessed in the inner surface 424, and after the clamping plate 420 is installed in the second mounting groove 226, the second avoiding groove 423 is in communication with the second mounting groove 226.

[0095] The second avoiding slot 423 can be used for the fingers or the operating tool of the operator to extend into, so as to facilitate the operator to apply force to the buckling part 4203 of the buckling plate 420 to buckle the buckling plate 420, so as to realize the unlocking of the locking assembly 400. When the locking assembly 400 needs to be unlocked, the fingers of the operator can extend into the second avoiding slot 423, at this time, the fingers are located between the buckling part 4203 of the buckling plate 420 and the second shell 220, which further facilitates the operator to apply force to buckle the buckling part 4203 of the buckling plate 420, so that the buckling plate 420 is opened relative to the second shell 220, so as to unlock the second shell 220 from the first shell 210, and facilitate the separation of the connecting mechanism 10 and the connector 50.

[0096] In the embodiment, the second shell 220 has the first avoiding slot 227, and the buckling plate 420 has the second avoiding slot 423, at this time, the first avoiding slot 227, the second avoiding slot 423 and the second mounting slot 226 are communicated, so that the fingers of the operator can extend into the second avoiding slot 423 through the first avoiding slot 227, which facilitates the operator to apply force to the buckling part 4203 of the buckling plate 420 to buckle the buckling plate 420. In other embodiments, only the first avoiding slot 227 can be provided, and the fingers or the operating tool of the operator can extend into the first avoiding slot 227 to buckle the buckling part 4203 of the buckling plate 420. Alternatively, only the second avoiding slot 423 can be provided, and the fingers or the operating tool of the operator can extend into the second avoiding slot 423 to buckle the buckling part 4203 of the buckling plate 420.

[0097] Referring to Figures 13 to 15 In an embodiment, the locking assembly 400 further comprises a first pin shaft 430 and a second pin shaft 440 extending along the proximal connector 100 in the axial direction, the first pin shaft 430 is rotatably arranged on the first end part 411 and rotatably connected to the connecting part 4202 of the buckling plate 420. The second pin shaft 440 is rotatably arranged on the rotating part 4201 and rotatably connected to the second shell 220.

[0098] The first end part 411 of the locking plate 410 is provided with the first pin shaft 430, the first pin shaft 430 extends along the proximal connector 100 in the axial direction and is arranged through the connecting part 4202 of the buckling plate 420, so as to rotatably connect the first end part 411 of the locking plate 410 to the connecting part 4202 of the buckling plate 420. The rotating part 4201 of the buckling plate 420 is provided with the second pin shaft 440 extending along the proximal connector 100 in the axial direction, and the rotating part 4201 of the buckling plate 420 is rotatably connected to the second shell 220 through the second pin shaft 440.

[0099] The locking plate 410 is clamped in the clamping groove 216 by the clamping buckle 413 to lock the locking plate 410 to the first shell 210, and on this basis, the buckle plate 420 is buckled to the second shell 220, at this time, the locking assembly 400 is in a locked state, and the second shell 220 can be locked to the first shell 210. The buckle plate 420 is buckled, the rotating part 4201 of the buckle plate 420 rotates around the second pin shaft 440, so that the buckle plate 420 is opened relative to the first shell 210, and then the buckle plate 420 drives the locking plate 410 to separate from the first shell 210 through the first pin shaft 430, so that the clamping buckle 413 is separated from the clamping groove 216, at this time, the locking assembly 400 is in an unlocked state.

[0100] Referring to Figure 3 、 Figure 7 and Figure 10 , in an embodiment, the inner wall of the first shell 210 protrudes an installation part 218, the installation part 218 is arranged at one end of the first shell 210 close to the proximal connector 100, and the second shell 220 is rotatably connected to the installation part 218. That is, the first inner side surface 214 protrudes the installation part 218, and the installation part 218 is located at the third connecting end 240 of the distal connector 200.

[0101] The side of the installation part 218 is rotatably connected to the second shell 220. Specifically, the side of the first shell 210 is rotatably connected to the side of the second shell 220, which can as much as possible increase the volume of the accommodation cavity 202 to better accommodate the fixed connector 50.

[0102] Referring to Figure 1 and Figure 3 , in an embodiment, the connecting mechanism 10 further comprises a fastener 300, the fastener 300 is arranged through the proximal connector 100 and is fixed with the third connecting end 240 of the distal connector 200. For example, the fastener 300 is arranged through the second connecting hole 102 and is installed to the third connecting end 240 of the distal connector 200, so as to achieve fastening connection between the proximal connector 100 and the distal connector 200, improve the reliability of the connection between the proximal connector 100 and the distal connector 200, and avoid separation of the proximal connector 100 and the distal connector 200 during pulling of the pull rod 60.

[0103] The fastener 300 can be assembled to the mounting portion 218 to fix the proximal connector 100 to the first housing 210. The middle portion of the mounting portion 218 is provided with an assembly hole 2181 coaxially arranged with the second connecting hole 102. Thus, the fastener 300 can be assembled into the assembly hole 2181 through the second connecting hole 102 to fix the proximal connector 100 to the first housing 210, so as to fix the proximal connector 100 to the third connecting end 240 of the distal connector 200 when the locking assembly 400 locks the second housing 220 to the first housing 210.

[0104] In an embodiment, the fastener 300 is in interference fit with the assembly hole 2181. Thus, the fastener 300 can be reliably assembled into the mounting hole 2182, and the reliability of the connection between the proximal connector 100 and the first housing 210 is improved. Of course, in other embodiments of the present application, the fastener 300 and the assembly hole 2181 can also be in threaded connection or other connection mode, as long as the reliable connection between the proximal connector 100 and the first housing 210 can be achieved.

[0105] Referring to Figure 3 , Figure 7 and Figure 8 In an embodiment, the connection mechanism 10 further comprises a sealing member 260 received in the receiving cavity 202. For example, the sealing member 260 is arranged on the side of the receiving cavity 202 close to the proximal connector 100 to sealingly connect with the end of the connector 50. The sealing member 260 is arranged in the connection mechanism 10 and located at the top of the receiving cavity 202. After the receiving cavity 202 receives the connector 50, the sealing member 260 can sealingly arrange at the end of the connector 50. In the embodiment, the sealing member 260 is fixedly arranged on the first inner side surface 214 of the first housing 210. Of course, in other embodiments of the present application, the sealing member 260 can also be fixedly arranged on the second inner side surface 224 of the second housing 220.

[0106] When the second housing 220 is closed relative to the first housing 210, the sealing member 260 is arranged on the side of the receiving cavity 202 close to the proximal connector 100. After the connection mechanism 10 is connected with the connector 50, the end of the connector 50 is received in the receiving cavity 202, and the outer shell surface 520 of the connector 50 abuts against the first inner side surface 214 and the second inner side surface 224 to fix the connector 50. At the same time, the sealing member 260 is arranged at the end of the connector 50 and sealingly connects the port 530 of the connector 50 to avoid blood entering the connector 50.

[0107] In an embodiment, the sealing member 260 is fixed to the inner wall of at least one of the first housing 210 and the second housing 220, and the fixing manner can be adhesion, welding or other fixing manners. For example, the sealing member 260 is fixed to the first inner side surface 214 or the second inner side surface 224 or both by adhesion, so that the sealing member 260 can be reliably accommodated in the accommodation cavity 202, thereby improving the sealing effect of the sealing member 260 on the port 530 of the connector 50.

[0108] In an embodiment, the sealing member 260 is located on the side of the mounting portion 218 away from the proximal connector 100. The side of the mounting portion 218 away from the proximal connector 100 (i.e., the side of the sealing member 260 close to the fourth connecting end 250) is provided with a mounting hole 2182. The side of the sealing member 260 close to the proximal connector 100 is provided with a mounting protrusion 261, i.e., the side of the sealing member 260 facing the third connecting end 240 is provided with the mounting protrusion 261, and the mounting protrusion 261 is embedded in the mounting hole 2182 to improve the reliability of the sealing member 260 fixed to the first housing 210.

[0109] In an embodiment, the mounting protrusion 261 is adhesively fixed to the inner wall of the mounting hole 2182 to improve the reliability of the sealing member 260 fixed to the first housing 210. It should be noted that the structure of the sealing member 260 is not limited in principle, as long as the sealing member 260 can be fixed to the first inner side surface 214 and seal the port 530 of the connector 50.

[0110] Please refer to Figure 16 In the present embodiment, the sealing member 260 is provided with a central boss 262 and an annular sealing portion 263 surrounding the central boss 262. For example, the central boss 262 is arranged at the end of the sealing member 260 away from the proximal connector 100. The central boss 262 can be inserted into the port 530 of the connector 50, and the annular sealing portion 263 can abut against the end face 501 of the connector 50, wherein the end face 501 of the connector 50 surrounds the port 530. Through the insertion of the central boss 262 into the port 530 of the connector 50 and the abutment of the annular sealing portion 263 against the end face 501 of the connector 50, the sealing member 260 can seal the port 530 to prevent blood from entering the interior of the connector 50. In the present embodiment, the annular sealing portion 263 is a stepped surface surrounding the central boss 262. In other embodiments, the annular sealing portion 263 can also be a sealing ring or other structure surrounding the central boss 262.

[0111] The center boss 262 is substantially cylindrical. The center boss 262 is provided with a center groove 2621 formed by inwardly recessing an end face of the center boss 262, so that the center boss 262 can be inwardly deformed towards the center axis of the center boss 262 under the action of an external force, so that the center boss 262 can be adapted to the port 530 of the connector 50 of a smaller size, avoiding the case that the port 530 is too small due to machining errors, so that the sealing element 260 cannot be plugged with the port 530 of the connector 50. Wherein, the inwardly recessing of the end face of the center boss 262 refers to the side of the end face of the center boss 262 towards the proximal connector 100 is recessed.

[0112] In the present embodiment, the outer periphery of the sealing element 260 is provided with an annular groove 264, which is arranged around the center axis of the center boss 262 for one turn, so that the sealing element 260 is more easily deformed under the action of an external force, to better fit the end face 501 of the connector 50, and improve the sealing performance of the connector 50.

[0113] The material of the sealing element 260 is silica gel or rubber, so that the sealing element 260 can be deformed under the action of an external force to seal the connector 50.

[0114] Referring to Figure 1 and Figure 3 , when the connection mechanism 10 is connected with the connector 50, the second housing 220 is rotated relative to the first housing 210 to open the second housing 220 relative to the first housing 210, to place the end portion of the connector 50 between the first housing 210 and the second housing 220, and to make the mating portion 510 of the connector 50 correspond to the clamping portion 201 of the distal connector 200. Subsequently, the second housing 220 is rotated relative to the first housing 210 to close the second housing 220 relative to the first housing 210, at this time, the first housing 210 and the second housing 220 are surrounded to form a receiving cavity 202, and the clamping portion 201 and the mating portion 510 are matched with each other, and the connector 50 is received through the receiving cavity 202.

[0115] The clasp 413 of the first end portion 411 of the locking plate 410 is placed in the clamping groove 216, and the second end portion 412 of the locking plate 410 is rotated around the first pin shaft 430 to be buckled in the first mounting groove 217, on this basis, the buckle plate 420 is rotated relative to the second housing 220 through the second pin shaft 440 to be buckled in the second mounting groove 226, in this way, the locking assembly 400 is in a locked state, and the locking assembly 400 can lock the second housing 220 to the first housing 210. While the receiving cavity 202 receives the connector 50, the sealing element 260 seals the end portion of the connector 50 to seal the port 530 of the connector 50.

[0116] Thus, the stable connection of the distal connecting member 200 and the connector 50 can be achieved, and the distal connecting member 200 and the connector 50 are prevented from being separated. Since the connecting mechanism 10 has been connected to the pull rod 60 through the proximal connecting member 100, when the connecting mechanism 10 is connected to the connector 50 outside the human body, the pull rod 60 can pull the connector 50 through the connecting mechanism 10, so that the connector 50 enters the human body through the opening of the human tissue and is pulled out of the human body through the hole, and the installation of the connector 50 is completed.

[0117] When the connector 50 is pulled out of the human body, the connecting mechanism 10 needs to be separated from the connector 50, so that the connector 50 is electrically connected to the external controller. The finger of the operator is inserted into the second avoiding slot 423 through the first avoiding slot 227, and the fastening part 4203 of the buckle plate 420 is forced to buckle the buckle plate 420, so that the rotating part 4201 of the buckle plate 420 rotates around the second pin shaft 440, and the buckle plate 420 is opened relative to the second shell 220.

[0118] During the rotation of the buckle plate 420, the buckle plate 420 drives the locking plate 410 to rotate through the first pin shaft 430, so that the buckle 413 of the second end part 412 of the locking plate 410 is separated from the clamping groove 216, and the locking plate 410 is opened relative to the first shell 210. Thus, the unlocking of the locking assembly 400 is achieved, and the second shell 220 is unlocked relative to the first shell 210. Subsequently, the second shell 220 rotates relative to the first shell 210, so that the second shell 220 is opened relative to the first shell 210, and at this time, the connector 50 can be separated from the first shell 210 and the second shell 220, and the separation of the connecting mechanism 10 and the connector 50 is achieved.

[0119] Compared with the conventional rotary connecting mechanism for separating the connecting mechanism and the connector, the second shell 220 is rotated relative to the first shell 210 in the present application, so that the first shell 210 and the second shell 220 are closed or opened, the rotary slip is avoided, the connection and separation of the connecting mechanism 10 and the connector 50 are facilitated, the time for connecting and separating the connecting mechanism 10 and the connector 50 is shortened, and the operation safety is higher.

[0120] Referring to Figure 1 , Figure 17 and Figure 18 , the present application also provides a pull wire device 1, which comprises a handle 70, a pull rod 60, and a connecting mechanism 10 according to any one of the above embodiments. The handle 70 is arranged at one end of the pull rod 60, and the other end of the pull rod 60 is detachably connected to the proximal connecting member 100 of the connecting mechanism 10. As shown in Figure 17 , the top end of the pull rod 60 is detachably arranged with the handle 70, and the bottom end of the pull rod 60 is detachably arranged with the connecting mechanism 10. Thus, the pull rod 60 can be connected to the connector 50 through the connecting mechanism 10, and the connector 50 is pulled out of the human body.

[0121] Referring to Figure 17 and Figure 18 In an embodiment, the pull rod 60 comprises a rod portion 610 and a connecting head 620, the connecting head 620 is arranged at opposite ends of the rod portion 610 and is detachably connected with the proximal connecting member 100. The rod portion 610 is made of stainless steel and can be bent to extend into the body through the hole in the human tissue and then extend out of the body through the opening in the human tissue. In Figure 17 and Figure 18 The connecting head 620 is arranged at the bottom of the rod portion 610 and is detachably connected with the proximal connecting member 100, such as threaded connection or clamping connection, etc. The top of the rod portion 610 is detachably connected with the handle 70, such as threaded connection or clamping connection, etc.

[0122] Referring to Figure 17 and Figure 18 In an embodiment, the pull wire device 1 further comprises a knife head 80, which is detachably arranged at the end of the pull rod 60 away from the handle 70. The knife head 80 is detachably connected with the connecting head 620, and the knife head 80 can form a hole in the human tissue to facilitate the pull rod 60 to extend into the body through the hole.

[0123] When the connector 50 needs to be pulled out of the body, the knife head 80 is installed on the connecting head 620. The knife head 80 forms a hole in the human tissue, and the pull rod 60 is driven by the knife head 80 to extend into the body through the hole and then extend out of the body through the opening in the human tissue. Then, the knife head 80 is detached from the connecting head 620, and the proximal connecting member 100 is connected with the connecting head 620 to install the connecting mechanism 10 on the pull rod 60.

[0124] Then, the connecting mechanism 10 is connected with 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 connecting mechanism 10, and the connector 50 is pulled into the body from the opening and then pulled out of the body through the hole. When the installation operation of the connector 50 is completed, the connecting mechanism 10 is separated from the connector 50, and then the connector 50 can be electrically connected with the external controller.

[0125] The technical features of the above embodiments can be combined in any way. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present disclosure.

[0126] The above embodiments only express several implementation ways of the present application, and the description is specific and detailed, but it should not be understood as a limitation to the patent scope. It should be pointed out that, for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are all within the protection scope of the present application.

Claims

1. A connection mechanism, characterized in that The application relates to a blood pump connector, which comprises: a proximal connector having opposite first and second connecting ends, the first connecting end being connectable with a pull rod of a pull wire device; a distal connector connected to the second connecting end, the distal connector having a receiving cavity capable of receiving at least part of a connector of a blood pump, and a cavity wall of the receiving cavity being capable of engaging with the connector so as to connect the distal connector to the connector; the distal connector comprises a first housing connected to the proximal connector and a second housing rotatably connected to the first housing at one side and capable of being opened or closed relative to the first housing at the other side; wherein the second housing is closed relative to the first housing so as to enclose the receiving cavity with the first and second housings, and the second housing is opened relative to the first housing so as to disconnect the distal connector from the connector; and a locking assembly capable of locking the first and second housings to keep the second housing closed relative to the first housing, the locking assembly comprising a clamping plate and a locking plate, the clamping plate comprising a rotating portion, a connecting portion and a clamping portion, the connecting portion being located between and connected to the rotating portion and the clamping portion, the rotating portion being rotatably connected to the second housing, and the clamping portion being capable of clamping on an outer circumferential surface of the second housing; the first housing has a first mounting groove, the locking plate being capable of being received in the first mounting groove; the second housing has a second mounting groove, the clamping plate being capable of being received in the second mounting groove; and the first and second mounting grooves are capable of being communicated when the second housing is closed relative to the first housing. The first housing has a first lug, the second housing has a second lug, and the distal connector further comprises a connecting shaft penetrating through the first and second lugs, the connecting shaft being rotatable relative to at least one of the first and second lugs so as to rotate the second housing relative to the first housing and open or close the second housing relative to the first housing.

2. The connection mechanism of claim 1, wherein The second housing has an axis of rotation relative to the first housing, the axis of rotation extending in parallel with an axial direction of the proximal connector. The locking assembly is arranged on at least one of the first and second housings. The locking plate has opposite first and second ends, the first end being rotatably connected to the connecting portion, and the second end being provided with a clasp, the first housing being provided with a clamping groove, the clasp being capable of engaging with the clamping groove; wherein the clamping portion clamps on the outer circumferential surface of the second housing, and the locking assembly locks the first and second housings when the clamping portion clamps on the outer circumferential surface of the second housing and the clasp engages with the clamping groove.

3. The connection mechanism of claim 1, wherein The clamping groove is arranged on a groove bottom surface of the first mounting groove.

4. The connection mechanism of claim 3, wherein ​ 5. The connection mechanism of claim 4, wherein, The outer circumferential surface of the second shell further has a first avoiding slot for fingers or operating tools to extend into, the first avoiding slot being communicated with the second mounting slot, and when the buckling part is buckled to the outer circumferential surface of the second shell, the first avoiding slot is close to the end of the buckling part away from the rotating part; and / or the buckling plate has an inner surface facing the second mounting slot, and the inner surface is provided with a second avoiding slot for fingers or operating tools to extend into, the second avoiding slot being arranged at the end of the buckling part away from the rotating part.

6. The connection mechanism according to any one of claims 1 to 5, characterized in that The inner wall of the first shell is provided with a mounting part, and the mounting part is arranged at the end of the first shell close to the proximal connector; wherein the side part of the mounting part is rotationally connected with the second shell; the middle part of the mounting part is provided with an assembly hole, and the connecting mechanism further comprises a fastener, the fastener is arranged through the second connecting end of the proximal connector and is assembled in the assembly hole.

7. The connection mechanism according to any one of claims 1 to 5, characterized in that The connecting mechanism further comprises a sealing member, the sealing member is accommodated in the accommodation cavity, and the sealing member can be sealingly connected with the end part of the connector, wherein: The sealing member is fixedly connected with the inner wall of at least one of the first shell and the second shell; and / or the first shell comprises a mounting part protruding from the inner wall thereof, the mounting part is arranged at the end of the first shell close to the proximal connector, the side of the mounting part away from the proximal connector has a mounting hole, and the sealing member is provided with a mounting protrusion embedded in the mounting hole.

8. The connection mechanism according to any one of claims 1 to 5, characterized in that The connecting mechanism further comprises a sealing member accommodated in the accommodation cavity, the sealing member is provided with a center boss and an annular sealing part arranged around the center boss, the center boss can be insertedly matched with the port of the connector, and the annular sealing part can sealingly abut against the end surface of the connector.

9. The connection mechanism of claim 8, wherein, The center boss is provided with a center groove recessed inwardly from the end surface of the center boss; and / or the outer periphery of the sealing member is provided with an annular groove arranged around the center axis of the center boss; and / or the material of the sealing member is silica gel or rubber.

10. A line pulling device characterized by The connecting mechanism comprises a pull rod and a proximal connector, and the pull rod is detachably connected with the proximal connector.

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