Connecting mechanism and wire drawing device

Abstract

The invention relates to a connecting mechanism and a wire pulling device. The connecting mechanism comprises a seat body, a rotating piece and a rotation stopping piece. The rotating part is used for being detachably connected with a connector of the blood pump, the rotating part can be rotatably arranged on the base body, the rotating part rotates relative to the base body and can be clamped with or separated from the connector, and when the rotating part is clamped with the connector, the base body can be prevented from being separated from the connector; the rotation stopping part is movably arranged on one of the seat body and the rotating part, the other one of the seat body and the rotating part is provided with a matching part, and the rotation stopping part can be matched with the matching part so as to prevent the rotating part from rotating relative to the seat body to be separated from the connector. Therefore, the rotation stopping piece is matched with the matching part, so that the rotating piece can be prevented from rotating relative to the seat body, the situation that the rotating piece is separated from the connector due to mistaken rotation of the rotating piece is avoided, then the situation that the wire pulling device is separated from the connector due to mistaken operation of the rotating piece is avoided, and the wire pulling device can smoothly pull the connector out of the body.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a connecting mechanism and a wire pulling device. Background Technology

[0002] After the blood pump is implanted, a pull-wire device is needed to pull the connector on the blood pump out of the body to electrically connect it to an external controller. Once the connector is out of the body, the pull-wire device is then separated from the connector. However, current pull-wire devices are prone to accidental operation, causing the pull-wire device to separate from the connector. Summary of the Invention

[0003] Based on this, this application provides a connection mechanism and a pull wire device to avoid misoperation causing the connection mechanism to separate from the connector.

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

[0005] A base for detachable connection with a blood pump connector;

[0006] A rotating member, rotatably disposed on the base, the rotating member rotating relative to the base to engage or disengage with the connector, and when engaged with the connector, preventing the base from disengaging from the connector; and

[0007] An anti-rotation member is movably disposed on one of the base body and the rotating member. The other of the base body and the rotating member is provided with a mating part. The anti-rotation member can engage with the mating part to prevent the rotating member from rotating relative to the base body to the point of separation from the connector.

[0008] In one embodiment of this application, the mating part is disposed on the outer wall of the rotating member, and the mating part is provided with a locking groove; the anti-rotation member includes a rotating end and a locking end opposite to each other, the rotating end is rotatably disposed on the seat, and the locking end can engage with the locking groove to prevent the rotating member from rotating relative to the seat.

[0009] In one embodiment of this application, the connecting mechanism further includes at least one of the following features:

[0010] The locking end has an end face on the side opposite to the rotating end, the locking groove has a groove sidewall, the groove sidewall is disposed opposite to the end face, and when the locking end is engaged with the locking groove, the groove sidewall and the end face have a preset distance.

[0011] The inner wall of the locking end is provided with a relief groove, which penetrates the end face of the locking end opposite to the rotating end.

[0012] When the locking end engages with the locking groove, the outer wall of the anti-rotation member is coplanar with the outer wall of at least one of the base and the rotating member.

[0013] In one embodiment of this application, the outer wall of the seat is provided with a receiving groove and a connecting groove, the connecting groove being able to connect the receiving groove and the locking groove, the rotating end being rotatably disposed in the receiving groove, and when the locking end is engaged with the locking groove, the connecting groove connecting the receiving groove and the locking groove, part of the anti-rotation member being accommodated in the connecting groove and part being accommodated in the locking groove, the circumferential width of the locking groove being greater than the circumferential width of the connecting groove.

[0014] In one embodiment of this application, at least one of the connecting groove and the locking groove has a limiting protrusion on its wall surface, and the outer wall edge of the anti-rotation member has a limiting groove. When the locking end is engaged with the locking groove, the limiting protrusion is engaged in the limiting groove so that the anti-rotation member is limited to the receiving groove and the locking groove.

[0015] In one embodiment of this application, along the circumferential direction of the seat body, the thickness of the two sides of the anti-rotation member is greater than the thickness of the middle part of the anti-rotation member.

[0016] In one embodiment of this application, the base is provided with a circumferentially extending mating groove, the mating groove having two circumferentially extending groove walls, the inner wall of the rotating member is provided with a mating protrusion, the mating protrusion being able to be engaged in the mating groove, the length of the mating protrusion along the circumferential direction of the base is less than the length of the mating groove along the circumferential direction of the base; the connecting mechanism further includes an elastic member, the elastic member being disposed in the mating groove, one end of the elastic member abutting against one of the groove walls, and the mating protrusion abutting between the other end of the elastic member and the other groove wall.

[0017] In one embodiment of this application, the base includes a connecting base and a mounting base connected together. The rotating member is rotatably disposed on the mounting base. The connecting base is provided with a receiving groove, and the mounting base is provided with a mounting boss. The mounting boss is received in the receiving groove. The mounting boss is provided with a first positioning surface, and the inner peripheral wall of the receiving groove is provided with a second positioning surface. The first positioning surface cooperates with the second positioning surface to prevent the connecting base from rotating relative to the mounting base.

[0018] In one embodiment of this application, the mounting boss is provided with a clearance hole, and the side of the connecting seat facing the mounting seat is provided with a connecting protrusion corresponding to the clearance hole. The connecting seat is used to connect with the pull rod of the pull cable device. The connecting seat is also provided with a connecting hole for fixing the pull rod. The connecting hole is partially disposed on the connecting protrusion and extends through the side of the connecting seat opposite to the connecting protrusion.

[0019] And / or, both the first positioning surface and the second positioning surface are planar.

[0020] Secondly, this application provides a pull cord device, including 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 base.

[0021] By adopting the above technical solution, this application has at least the following technical effects:

[0022] This application discloses a connection mechanism and a cable-pulling device. The connection mechanism includes a base, a rotating member, and an anti-rotation member. The base is detachably connected to a blood pump connector. The rotating member is rotatably mounted on the base. The rotating member rotates relative to the base to engage or disengage with the connector. When engaged with the connector, the rotating member prevents the base from separating from the connector. That is, rotating the rotating member separates it from the blood pump connector, allowing the base to separate from the connector. When engaged, the base remains connected to the connector. One of the rotating member and the base is movably provided with an anti-rotation member, and the other is provided with a mating part. The anti-rotation member engages with the mating part to prevent the rotating member from rotating relative to the base to the point of separation from the connector. This prevents accidental rotation of the rotating member relative to the base, thus avoiding separation of the rotating member from the connector due to misoperation of the rotating member. This allows the cable-pulling device to smoothly pull the connector out of the body. Attached Figure Description

[0023] Figure 1 A schematic diagram of the wire-pulling device provided in this application.

[0024] Figure 2 for Figure 1 A partial sectional view of the pull rod and connecting mechanism of the pull wire device shown.

[0025] Figure 3 for Figure 1 The diagram shows the connection mechanism of the pull-wire device and its connection to the connector.

[0026] Figure 4 for Figure 2 The diagram shows the connection mechanism in the locked state when the anti-rotation component is engaged.

[0027] Figure 5 for Figure 2 The diagram shows the connection mechanism in the unlocked state when the anti-rotation component is in the unlocked state.

[0028] Figure 6 for Figure 5 The diagram shows another structural schematic of the connecting mechanism when the anti-rotation component is in the unlocked state.

[0029] Figure 7 for Figure 4 The front view of the connecting mechanism shown.

[0030] Figure 8 for Figure 7 A cross-sectional view along the AA direction.

[0031] Figure 9 for Figure 4 The diagram shows a connection mechanism in which the base and the rotating component are separated.

[0032] Figure 10 for Figure 7 A magnified view of a portion of P1.

[0033] Figure 11 for Figure 8 A magnified view of a portion of P2.

[0034] Figure 12 for Figure 4 The connecting mechanism shown is an exploded view from one perspective.

[0035] Figure 13 for Figure 4 An exploded view of the connecting mechanism shown from another perspective.

[0036] Figure 14 for Figure 7 A cross-sectional view along the BB direction.

[0037] Figure 15 for Figure 12 The diagram shows the structural schematic of the connecting seat of the connecting mechanism.

[0038] Figure 16 for Figure 1 The diagram shows the structure of the pull wire device and the connector.

[0039] Wherein: 10, pull wire device; 100, connecting mechanism; 110, base; 111, receiving groove; 112, rotating hole; 113, mounting base; 1131, first mounting body; 1132, second mounting body; 1133, mating groove; 1134, mounting boss; 1135, clearance hole; 1136, first positioning surface; 114, connecting base; 1141, connecting protrusion; 1142, receiving groove; 1143, connecting hole; 1144, second positioning surface; 115, connector; 1151, mounting groove; 1152, positioning protrusion. ; 116, connecting groove; 1161, limiting protrusion; 120, rotating component; 120a, mating part; 121, locking groove; 1211, groove sidewall; 122, snap-fit ​​protrusion; 123, mating protrusion; 130, anti-rotation component; 131, end face; 132, clearance groove; 133, limiting groove; 134, rotating end; 135, locking end; 140, rotating component; 150, elastic component; 160, sealing ring; 200, pull rod; 210, rod part; 220, mounting head; 300, handle; 400, fastener; 50, connector. Detailed Implementation

[0040] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0041] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0042] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0043] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0044] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact, or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0045] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, 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 possible implementation.

[0046] After the blood pump is implanted, its connector needs to be pulled out of the body via a pull-wire device to electrically connect to an external controller. After pulling out the blood pump connector, the pull-wire device is then separated from the connector. Typically, in related technologies, the pull-wire device uses a rotating connection between the connecting mechanism and the connector; however, if the connecting mechanism rotates due to misoperation, the connecting mechanism and connector may separate due to accidental operation.

[0047] Therefore, this application provides a connecting mechanism and a pull-cord device. This connecting mechanism prevents the connecting mechanism from separating from the connector due to accidental operation of the rotating component, allowing the pull-cord device to smoothly pull the connector out of the body, enabling the blood pump to be electrically connected to an external controller via the connector. The connecting mechanism and pull-cord device of this application will be described in detail below with reference to specific embodiments and the accompanying drawings.

[0048] To better illustrate the structure of the connecting mechanism 100, the structure of the pull wire device 10 will be briefly described first. For example... Figure 1 and Figure 2 As shown, the cable pulling device 10 includes a pull rod 200, a handle 300, and a connecting mechanism 100. One end of the pull rod 200 is provided with the handle 300, and the other end of the pull rod 200 is detachably connected to the connecting mechanism 100. The specific structure of the connecting mechanism 100 in some embodiments is described below.

[0049] See Figures 2 to 6 In one embodiment, the connecting mechanism 100 includes a base 110, a rotating member 120, and an anti-rotation member 130. The base 110 is detachably connected to the connector 50 of the blood pump. Specifically, one end of the base 110 is connected to the connector 50, and the other end is connected to the pull rod 200 of the pull cable device 10. The base 110 and the connector 50 are plugged into each other. The rotating member 120 is rotatably disposed on the base 110. The anti-rotation member 130 is movably disposed on one of the base 110 and the rotating member 120, and is able to abut against the other of the base 110 and the rotating member 120. Specifically, the base 110 can serve as a mounting base, and both the rotating member 120 and the anti-rotation member 130 are assembled to the base 110.

[0050] Specifically, the rotating member 120 rotates relative to the base 110 to engage or disengage with the connector 50. When the rotating member 120 is engaged with the base 110, it prevents the base 110 from separating from the connector 50. When the rotating member 120 is disengaged from the base 110, it allows the base 110 to be separated from the connector 50. The other of the base 110 and the rotating member 120 is provided with a mating part 120a. The anti-rotation member 130 can engage with the mating part 120a to prevent the rotating member 120 from rotating relative to the base 110 to the point of disengagement from the connector 50.

[0051] In the aforementioned connection mechanism 100, the rotating member 120 is rotatably disposed on the base 110. The rotating member 120 can engage or disengage with the connector 50 when rotating relative to the base 110. When the rotating member 120 is engaged with the connector 50, it can prevent the base 110 from disengaging from the connector 50. That is, rotating the rotating member 120 can disengage the rotating member 120 from the blood pump connector 50, thereby allowing the base 110 to disengage from the connector 50. When the rotating member 120 is engaged with the connector 50, the base 110 and the connector 50 remain connected. One of the rotating member 120 and the base 110 is movably provided with an anti-rotation member 130, and the other is provided with a mating part 120a. The anti-rotation member 130 can abut against the mating part 120a to prevent the rotating member 120 from rotating relative to the base 110 and separating from the connector 50. This avoids the rotating member 120 from rotating relative to the base 110 and separating from the connector 50, thereby preventing the connecting mechanism 100 from separating from the connector 50 due to misoperation of the rotating member 120. This allows the pull cable device 10 to smoothly pull the connector 50 out of the body.

[0052] like Figure 2 As shown, in this embodiment, the seat 110 and the pull rod 200 are connected by a thread to improve the reliability of the connection between them. In other embodiments, the seat 110 and the pull rod 200 can also be connected by a snap-fit ​​or other means. Optionally, the pull cable device 10 further includes a fastener 400, which connects the pull rod 200 and the seat 110. Specifically, the fastener 400 passes through the pull rod 200 and is detachably connected to the seat 110 to achieve a detachable connection between the seat 110 and the pull rod 200. In some embodiments, a threaded section is provided at the end of the pull rod 200 facing the seat 110, and it is directly connected to the seat 110 through the threaded section. In this case, the fastener 400 is not required.

[0053] When the base 110 is inserted into the connector 50, the rotating member 120 rotates relative to the base 110, causing the rotating member 120 to engage with the connector 50, thereby connecting the connecting mechanism 100 and the connector 50. To separate the connecting mechanism 100 from the connector 50, the rotating member 120 can be rotated first to separate it from the connector 50, and then the base 110 can be separated from the connector 50.

[0054] The rotating component 120 has an initial position and an unlocked position. When the rotating component 120 rotates relative to the base 110 from the initial position to the unlocked position, the rotating component 120 disengages from the connector 50; when the rotating component 120 rotates relative to the base 110 from the unlocked position to the initial position, the rotating component 120 engages with the connector 50. Thus, by switching the rotating component 120 between the initial position and the unlocked position, the rotating component 120 can be connected or disconnected from the connector 50.

[0055] See Figure 4 and Figure 8 In one embodiment, the inner wall of the rotating member 120 is provided with a snap-fit ​​protrusion 122 that connects to the connector 50. The snap-fit ​​protrusion 122 can engage with the snap-fit ​​groove (not shown) of the connector 50. That is, the top of the inner wall of the rotating member 120 is provided with a protruding snap-fit ​​protrusion 122. When the seat 110 is inserted into the connector 50, the rotating member 120 rotates relative to the seat 110, causing the snap-fit ​​protrusion 122 to rotate until the snap-fit ​​protrusion 122 engages in the snap-fit ​​groove, thereby achieving a reliable connection between the seat 110 and the connector 50, and thus achieving the connection between the connecting mechanism 100 and the connector 50.

[0056] See Figures 4 to 9 In one embodiment, the anti-rotation member 130 includes a rotating end 134 and a locking end 135, the rotating end 134 being rotatably disposed on the base 110; the mating part 120a is disposed on the outer wall of the rotating member 120, and the mating part 120a is provided with a locking groove 121. The locking end 135 can engage with the locking groove 121 to prevent the rotating member 120 from rotating relative to the base 110.

[0057] The anti-rotation member 130 has a locked state and an unlocked state. When the anti-rotation member 130 is in the locked state, at least a portion of the locking end 135 is accommodated in the locking groove 121, and the locking end 135 is engaged with the locking groove 121. When the anti-rotation member 130 is in the unlocked state, the locking end 135 is disengaged from the locking groove 121 and is located outside the locking groove 121. By providing the locking groove 121 on the outer wall of the rotating member 120, and by having at least a portion of the locking end 135 accommodated in the locking groove 121 when the anti-rotation member 130 is in the locked state, the height of the anti-rotation member 130 protruding from the outer wall of the rotating member 120 in the locked state is reduced. Compared to the traditional method of setting a limiting member around the outer periphery of the rotating member 120, the outer diameter of the connecting mechanism 100 is reduced, thereby reducing the diameter of the wound through which the suture device 10 passes, alleviating patient pain, and facilitating patient recovery.

[0058] When the anti-rotation member 130 is in the locked state, the locking end 135 of the anti-rotation member 130 is at least partially accommodated in the locking groove 121. The locking end 135 can abut against the groove wall of the locking groove 121 to restrict the rotation of the rotating member 120 relative to the base 110, thereby locking the base 110 and the rotating member 120 and preventing the rotating member 120 from accidentally rotating and separating from the connector 50. When the anti-rotation member 130 is rotated to disengage the locking end 135 from the locking groove 121, the anti-rotation member 130 is in the unlocked state. At this time, the groove wall of the locking groove 121 no longer obstructs the anti-rotation member 130, thereby unlocking the base 110 and the rotating member 120, allowing the rotating member 120 to rotate relative to the base 110. Subsequently, the rotating member 120 can rotate relative to the base 110 to separate the rotating member 120 from the connector 50.

[0059] In another embodiment, the anti-rotation member 130 is rotatably disposed on the rotating member 120. Correspondingly, the outer wall of the base 110 is provided with a locking groove 121. When the anti-rotation member 130 rotates, the locking end 135 can at least partially engage with the locking groove 121. That is, the position of the anti-rotation member 130 and the position of the locking groove 121 can be interchanged. The anti-rotation member 130 is rotatably connected to the outer wall of the rotating member 120 through the rotating end 134. When the anti-rotation member 130 rotates relative to the rotating member 120, the locking end 135 can move toward or away from the outer wall of the base 110, so that the anti-rotation member 130 can engage with or disengage from the locking groove 121.

[0060] Of course, in other embodiments, the mating part 120a may not be provided with the locking groove 121. The mating part 120a is provided with a protrusion that protrudes from the outer wall of the rotating member 120. The anti-rotation member 130 can abut against the protrusion to prevent the rotating member 120 from rotating relative to the seat 110 to separate from the connector 50.

[0061] See Figure 4 , Figure 7 and Figure 8 In one embodiment, when the locking end 135 engages with the locking groove 121, the outer wall of the anti-rotation member 130 is coplanar with the outer walls of at least one of the base 110 and the rotating member 120. In this embodiment, when the anti-rotation member 130 is in the locked state, the outer wall of the anti-rotation member 130 is coplanar with the outer wall of the base 110, and the outer wall of the anti-rotation member 130 is coplanar with the outer wall of the rotating member 120, so that the outer wall of the anti-rotation member 130 will not protrude from the outer wall of the base 110, nor from the outer wall of the rotating member 120. Thus, the overall outer diameter of the base 110, the rotating member 120, and the anti-rotation member 130 will not increase, avoiding an increase in the outer diameter of the connecting mechanism 100 due to the addition of the anti-rotation member 130, thereby avoiding an increase in the diameter of the wound through which the suture device 10 passes, reducing patient pain, and facilitating patient recovery. Here, coplanarity refers to being on the same plane, the same cylindrical surface, or the same curved surface. In this embodiment, the outer wall of the anti-rotation member 130 is on the same curved surface as the outer walls of the seat 110 and the rotating member 120. In other embodiments, the outer wall of the anti-rotation member 130 is on the same plane or the same cylindrical surface as the outer walls of the seat 110 and the rotating member 120.

[0062] In one embodiment, when the anti-rotation member 130 is in the locked state, the outer wall of the anti-rotation member 130 is coplanar with the outer wall of the base 110, but the outer wall of the anti-rotation member 130 is not coplanar with the outer wall of the rotating member 120. For example, the outer wall of the anti-rotation member 130 may protrude beyond the outer wall of the rotating member 120. In another embodiment, when the anti-rotation member 130 is in the locked state, the outer wall of the anti-rotation member 130 is not coplanar with the outer wall of the base 110, but the outer wall of the anti-rotation member 130 is coplanar with the outer wall of the rotating member 120.

[0063] See Figure 7 and Figure 8 In one embodiment, the locking end 135 has an end face 131 on the side opposite to the rotating end 134, and the locking groove 121 has a groove sidewall 1211. The groove sidewall 1211 is disposed opposite to the end face 131, and when the locking end 135 is engaged with the locking groove 121, the groove sidewall 1211 and the end face 131 have a preset distance. Figure 7 and Figure 8 In the indicated direction, the top of the locking end 135 is the end face 131, and the top wall of the locking groove 121 is the groove side wall 1211. After the anti-rotation member 130 is engaged in the locking groove 121, there is a preset distance between the end face 131 and the groove side wall 1211. This preset distance allows for easy insertion of fingers or operating tools, thereby facilitating the operation of the anti-rotation member 130, causing the anti-rotation member 130 to rotate, disengaging the anti-rotation member 130 from the locking groove 121, and unlocking the rotating member 120 from the seat 110.

[0064] See Figure 6 and Figure 8 In one embodiment, the inner wall of the locking end 135 is provided with a relief groove 132, which penetrates the end face of the locking end 135 opposite to the rotating end 134. That is, the inner wall of the locking end 135 is provided with a relief groove 132 extending to the end face 131, and the relief groove 132 is recessed into the inner wall of the locking end 135. The relief groove 132 facilitates the operation of the anti-rotation member 130. After a finger or operating tool is inserted into a preset distance, it can be inserted between the anti-rotation member 130 and the rotating member 120 through the relief groove 132, increasing the force-bearing area of ​​the anti-rotation member 130, making it easier for the finger or operating tool to drive the anti-rotation member 130 to rotate.

[0065] See Figures 4 to 9 In one embodiment, the outer wall of the seat 110 is provided with a receiving groove 111 and a communicating groove 116. The communicating groove 116 can connect the receiving groove 111 and the locking groove 121. The rotating end 134 is rotatably disposed in the receiving groove 111. When the locking end 135 is engaged with the locking groove 121, the communicating groove 116 connects the receiving groove 111 and the locking groove 121. The anti-rotation member 130 is partially accommodated in the communicating groove 116 and partially accommodated in the locking groove 121. When the anti-rotation member 130 is in the unlocked state, the anti-rotation member 130 disengages from the locking groove 121.

[0066] Because there may be assembly errors when the rotating component 120 is assembled to the base 110, in order to avoid misalignment between the locking groove 121 and the anti-rotation component 130 due to assembly errors, which would prevent the anti-rotation component 130 from engaging, in this embodiment, the circumferential width of the locking groove 121 is greater than the circumferential width of the connecting groove 116. This results in the locking groove 121 having a larger width along the circumference of the base 110, allowing the anti-rotation component 130 to engage smoothly in the locking groove 121. The circumferential width refers to the width along the circumferential direction of the base 110.

[0067] In this embodiment, the circumferential direction of the seat 110 refers to the circumferential direction of the seat 110. The axial direction refers to the direction of extension of the central axis of the seat 110.

[0068] After the anti-rotation member 130 partially engages with the locking groove 121, the locking end 135 abuts against the groove wall of the locking groove 121, and the anti-rotation member 130 is in a locked state. At this time, the anti-rotation member 130 can restrict the rotation of the rotating member 120 relative to the base 110, thereby locking the rotating member 120 and preventing the rotating member 120 from separating from the connector 50 due to accidental rotation. After the anti-rotation member 130 disengages from the locking groove 121, the anti-rotation member 130 is in an unlocked state, and the locking groove 121 no longer obstructs the locking end 135. The rotating member 120 is unlocked from the base 110, and the rotating member 120 can rotate relative to the base 110 to disengage from the connector 50, so that the base 110 can be separated from the connector 50, thereby realizing the separation of the connecting mechanism 100 and the connector 50.

[0069] See Figure 5 , Figure 7 and Figure 8 In one embodiment, the connecting mechanism 100 further includes a rotating member 140. The base 110 has a rotating hole 112, and the rotating member 140 is rotatably disposed in the rotating hole 112. An anti-rotation member 130 is fixedly connected to the rotating member 140. The rotating hole 112 communicates with a receiving groove 111. The rotating member 140 is rotatably disposed through the rotating hole 112 and partially received in the receiving groove 111. The end of the anti-rotation member 130 away from the rotating member 120 is fixedly connected to the rotating member 140. Thus, when the anti-rotation member 130 is rotated, it can drive the rotating member 140 to rotate in the rotating hole 112, so that the anti-rotation member 130 can engage or disengage from the locking groove 121. Optionally, the rotating member 140 is a pin. Of course, in other possible embodiments, the rotating member 140 can also be a rotating shaft or other components that enable the anti-rotation member 130 to be rotatably mounted on the base 110.

[0070] See Figure 5 , Figures 7 to 10In one embodiment, at least one of the walls of the connecting groove 116 and the locking groove 121 is provided with a limiting protrusion 1161, and the edge of the outer wall of the anti-rotation member 130 is provided with a limiting groove 133. When the locking end 135 is engaged with the locking groove 121, the limiting protrusion 1161 is engaged in the limiting groove 133, so that the anti-rotation member 130 is limited in the connecting groove 116 and the locking groove 121. The cooperation between the limiting protrusion 1161 and the limiting groove 133 can limit the anti-rotation member 130, keep the anti-rotation member 130 in the locking groove 121, and avoid the anti-rotation member 130 from disengaging from the locking groove 121 due to vibration, accidental contact or other factors as much as possible.

[0071] During the process of the anti-rotation member 130 being inserted into the locking groove 121, the limiting protrusion 1161 abuts against the anti-rotation member 130 and generates a certain resistance to the anti-rotation member 130, causing the anti-rotation member 130 to deform and pass over the limiting protrusion 1161 and be inserted into the locking groove 121.

[0072] The limiting protrusion 1161 cooperates with the limiting groove 133 to limit the rotation stop 130, preventing the rotation stop 130 from disengaging from the locking groove 121 during the operation of the cable pulling device 10. After the cable pulling device 10 pulls the connector 50 out of the body, a certain force is applied to the rotation stop 130 to overcome the blocking effect of the limiting protrusion 1161, which will cause the rotation stop 130 to disengage from the locking groove 121. Then, the rotating part 120 is rotated to disengage the rotating part 120 from the connector 50, and the seat 110 can be separated from the connector 50.

[0073] Because there may be assembly errors when the rotating component 120 is assembled to the base 110, these errors may cause misalignment between the rotating component 120 and the anti-rotation component 130. When the limiting protrusion 1161 protrudes from the wall of the locking groove 121, the misalignment between the rotating component 120 and the anti-rotation component 130 will cause the limiting protrusion 1161 to be misaligned with the limiting groove 133, thus preventing the limiting protrusion 1161 from engaging with the limiting groove 133. Therefore, in this embodiment, when the limiting protrusion 1161 protrudes from the wall of the connecting groove 116, the situation where the limiting protrusion 1161 cannot engage with the limiting groove 133 due to assembly errors of the rotating component 120 can be avoided, allowing the limiting protrusion 1161 to accurately engage with the limiting groove 133. In other embodiments, the limiting groove 133 may also protrude from the wall of the locking groove 121, or the walls of both the connecting groove 116 and the locking groove 121 may be provided with limiting protrusions 1161.

[0074] Please see Figures 9 to 11In this embodiment, the process of the anti-rotation member 130 disengaging from the locking groove 121 satisfies the lever principle. The rotating end 134 has a fulcrum O located on its rotation axis. The force required to rotate the anti-rotation member 130 is the driving force F1. The axial distance from the locking end 135 to the fulcrum O is the driving force arm L1. The force exerted by the limiting protrusion 1161 on the anti-rotation member 130 is the resistance force F2. The axial distance from the limiting protrusion 1161 to the fulcrum O is the resistance arm L2, where F1 × L1 = F2 × L2. Specifically, L1 and F2 are constant values. Therefore, when the axial distance L2 from the limiting protrusion 1161 to the fulcrum O is larger, the required driving force F1 is also larger, and the force required to rotate the anti-rotation member 130 is also larger.

[0075] In this embodiment, the limiting protrusion 1161 is located on the wall surface of the connecting groove 116 near the locking groove 121, making the limiting protrusion 1161 further away from the rotating end 134. This results in a larger axial distance L2 from the limiting protrusion 1161 to the fulcrum O, thus requiring a greater force to rotate the anti-rotation member 130, allowing the anti-rotation member 130 to engage more stably in the locking groove 121. Of course, in other embodiments, the limiting groove 133 can also be located in the middle region of the wall surface of the connecting groove 116 or at other positions. In this embodiment, there are two limiting grooves 133, which are disposed on both sides of the circumferential edge of the base 110. Correspondingly, there are also two limiting protrusions 1161, which are respectively disposed on two opposite walls of the connecting groove 116. Each limiting protrusion 1161 engages with a limiting groove 133. By engaging the two limiting protrusions 1161 with the corresponding two limiting grooves 133, the anti-rotation member 130 can be more stably confined within the limiting groove 133. Of course, in other embodiments, the limiting groove 133 may be disposed only on one side of the circumferential edge of the base 110, or one limiting groove 133 may engage with multiple limiting protrusions 1161.

[0076] See Figure 6 and Figure 8 In one embodiment, along the circumference of the base 110, the thickness of the two sides of the anti-rotation member 130 is greater than the thickness of the middle part of the anti-rotation member 130. That is, the wall thickness of the anti-rotation member 130 in the circumference of the base 110 presents a structure that is thinner in the middle and thicker on both sides, which facilitates the opening of limiting grooves 133 on both sides of the anti-rotation member 130. Based on the opening of the limiting grooves 133, the anti-rotation member 130 has sufficient strength, reduces the probability of the anti-rotation member 130 breaking, and thus improves the durability of the connecting mechanism 100.

[0077] Specifically, along the circumference of the seat 110, the thickness of the anti-rotation member 130 gradually decreases and then gradually increases, so that the bottom surface of the relief groove 132 is approximately a concave arc surface, which reduces stress concentration and gives the anti-rotation member 130 sufficient structural strength.

[0078] See Figure 8 , Figure 12 and Figure 13 The base 110 is provided with a circumferentially extending mating groove 1133, and the inner wall of the rotating member 120 is provided with a mating protrusion 123. The mating protrusion 123 can be engaged in the mating groove 1133. The length of the mating protrusion 123 along the circumferential direction of the base 110 is less than the length of the mating groove 1133 along the circumferential direction of the base 110, so that when the rotating member 120 rotates, the mating protrusion 123 can move along the extension direction of the mating groove 1133, so that the rotating member 120 can be rotatably installed on the base 110. The mating groove 1133 can also limit the rotation of the mating protrusion 123, so that the rotating member 120 can only rotate relative to the base 110 in the circumferential direction, and cannot move relative to the base 110 in the axial direction, so that the rotating member 120 can engage or disengage with the connector 50 by rotation.

[0079] See Figure 7 , Figure 13 and Figure 14 In one embodiment, the mating groove 1133 has two circumferential groove walls. The connecting mechanism 100 further includes an elastic element 150, which is disposed in the mating groove 1133. One end of the elastic element 150 abuts against one of the groove walls, and the mating protrusion 123 abuts between the other end of the elastic element 150 and the other groove wall. The elastic force of the elastic element 150 can push the mating protrusion 123 to drive the rotating member 120 to reset. The elastic element 150 is disposed in the mating groove 1133 along the circumference of the rotating member 120, and the elastic force of the elastic element 150 can realize the reset of the rotating member 120, so that the rotating member 120 can rotate to the initial position. Optionally, the elastic element 150 is a spring or the like.

[0080] When the rotating member 120 is in the initial position, one end of the elastic member 150 abuts against the mating protrusion 123, and the other end abuts against the groove wall of the mating groove 1133. When the rotating member 120 rotates from the initial position to the unlocked position, the mating protrusion 123 rotates along the mating groove 1133 and presses against the elastic member 150. After the rotating member 120 is released, the elastic force of the elastic member 150 can push the mating protrusion 123, thereby causing the rotating member 120 to rotate in the opposite direction, so that the rotating member 120 returns from the unlocked position to the initial position, realizing the reset of the rotating member 120.

[0081] See Figure 7 , Figures 8 to 13 The base 110 includes a mounting base 113 and a connecting base 114 connected together. The connecting base 114 is used to connect to the pull rod 200 of the pull cable device 10. A rotating member 120 is rotatably disposed on the mounting base 113, and an anti-rotation member 130 is rotatably disposed on the connecting base 114.

[0082] Specifically, the mounting base 113 is partially located within the rotating member 120, with a portion protruding from the rotating member 120, and the portion of the mounting base 113 protruding from the rotating member 120 is located between the rotating member 120 and the connecting base 114. A receiving groove 111 is provided in the connecting base 114, and a communicating groove 116 is provided in the mounting base 113. A limiting protrusion 1161 is located in the mounting base 113.

[0083] By separating the mounting base 113 and the connecting base 114, this application facilitates the processing and molding of both. This allows for separate processing and assembly of the mounting base 113 and the connecting base 114 into the base body 110, reducing processing difficulty and simplifying installation. Furthermore, the separate design allows the mounting base 113 and the connecting base 114 to be made of different materials, reducing production costs. Optionally, the mounting base 113 and the connecting base 114 can be connected by adhesive bonding; alternatively, they can be connected by snap-fit ​​or other methods.

[0084] Optionally, the mounting base 113 is made of plastic, and the connecting base 114 is made of metal. That is, the mounting base 113 is made of plastic, and the connecting base 114 is made of metal. The mounting base 113 and the connecting base 114 are bonded together with adhesive to achieve a reliable connection. Using plastic for the mounting base 113 reduces the production cost of the base 110. Using metal for the connecting base 114 increases its structural strength, thereby improving the reliability of the connection between the connecting base 114 and the pull rod 200. Of course, in other embodiments, the mounting base 113 and the connecting base 114 can be made of the same material, for example, both can be made of plastic, metal, or other rigid materials.

[0085] In one embodiment, the mounting base 113 includes a first mounting body 1131 and a second mounting body 1132 axially connected. The first mounting body 1131 is disposed between the connecting seat 114 and the rotating member 120, and the second mounting body 1132 is disposed at the end of the first mounting body 1131 away from the connecting seat 114. The rotating member 120 is rotatably sleeved on the outer periphery of the second mounting body 1132. When the mounting base 113 and the rotating member 120 are assembled, the rotating member 120 is sleeved onto the second mounting body 1132, and the rotating member 120 and the second mounting body 1132 are rotatably engaged. The first mounting body 1131 is located between the rotating member 120 and the connecting seat 114 and is connected to the connecting seat 114. A mating groove 1133 is provided in the second mounting body 1132.

[0086] The outer wall of the first mounting body 1131 can be coplanar with the outer wall of the rotating part 120 and the outer wall of the connecting seat 114. In this way, sharp edges or depressions can be avoided between the rotating part 120 and the connecting seat 114, thereby avoiding any impact on the wound and reducing patient pain.

[0087] See Figure 7 , Figure 13 and Figure 14 In one embodiment, the rotation axis of the anti-rotation member 130 is perpendicular to the rotation axis of the rotating member 120. Thus, when the anti-rotation member 130 switches between an unlocked state and a locked state, the locking end 135 can move towards or away from the rotating member 120, causing the locking end 135 to engage or disengage from the locking groove 121. Furthermore, when the anti-rotation member 130 is in the locked state, because the rotation axis of the anti-rotation member 130 is perpendicular to the rotation axis of the rotating member 120, the groove wall of the locking groove 121 can effectively stop the locking end 135, thereby more effectively preventing the rotating member 120 from rotating relative to the base 110.

[0088] See Figures 12 to 15 In one embodiment, the mounting base 113 further includes a mounting boss 1134, which is located at the end of the first mounting body 1131 away from the second mounting body 1132. The connecting base 114 is provided with a receiving groove 1142, and the mounting boss 1134 is received in the receiving groove 1142. The mounting boss 1134 is provided with a first positioning surface 1136, and the inner peripheral wall of the receiving groove 1142 is provided with a second positioning surface 1144. The first positioning surface 1136 and the second positioning surface 1144 cooperate to prevent the connecting base 114 from rotating relative to the mounting base 113, so that the mounting boss 1134 can be quickly aligned and installed in the receiving groove 1142, realizing the rapid positioning of the mounting base 113 and the connecting base 114, which facilitates the subsequent bonding of the mounting boss 1134 and the connecting base 114, so as to achieve a reliable connection between the mounting base 113 and the connecting base 114 and improve assembly efficiency. Specifically, both the mounting boss 1134 and the receiving groove 1142 are annular, and the first positioning surface 1136 is disposed on the outer peripheral wall of the mounting boss 1134.

[0089] Specifically, when assembling the mounting boss 1134 and the connecting seat 114, the first positioning surface 1136 and the second positioning surface 1144 are set in correspondence, and then the mounting boss 1134 is inserted into the receiving groove 1142 to ensure that the mounting seat 113 and the connecting seat 114 are accurately matched, so that the connecting groove 116 and the receiving groove 111 are aligned, so that the anti-rotation part 130 can be smoothly inserted into the connecting groove 116.

[0090] In this embodiment, both the first positioning surface 1136 and the second positioning surface 1144 are planar, positioning the connecting seat 114 on the mounting seat 113 and improving assembly efficiency. Of course, in other embodiments, the first positioning surface 1136 can also be an arc-shaped surface with a curvature different from the other surfaces of the outer peripheral wall of the mounting boss 1134. Correspondingly, the second positioning surface 1144 is an arc-shaped surface with the same curvature as the first positioning surface 1136, but with a curvature different from the other surfaces of the inner peripheral wall of the receiving groove 1142.

[0091] See Figure 2 , Figure 8 and Figure 13 In one embodiment, the connecting protrusion 1141 is disposed in the receiving groove 1142 and extends toward the mounting base 113. There is a certain distance between the outer peripheral wall of the connecting protrusion 1141 and the inner peripheral wall of the receiving groove 1142. The mounting boss 1134 is provided with a clearance hole 1135, and the connecting base 114 is provided with a connecting protrusion 1141 corresponding to the clearance hole 1135. The connecting base 114 also provides a connecting hole 1143 for fixing the pull rod 200. The connecting hole 1143 is partially disposed in the connecting protrusion 1141 and extends through the side of the connecting base 114 opposite to the connecting protrusion 1141. The connecting hole 1143 is used to cooperate with the fastener 400 that fixes the pull rod 200.

[0092] The mounting boss 1134 is hollow, and the cavity inside the mounting boss 1134 is a clearance hole 1135. In this way, the connecting protrusion 1141 of the connecting seat 114 can be installed into the clearance hole 1135, so that the connecting protrusion 1141 has sufficient height along the axial direction of the rotating member 120, which facilitates the opening of a connecting hole 1143 with sufficient depth along the axial direction of the rotating member 120, so as to ensure the connection strength between the connecting seat 114 and the fastener 400.

[0093] When the fastener 400 is installed into the connecting hole 1143 through one end of the pull rod 200, the sufficiently deep connecting hole 1143 can reliably connect with the fastener 400, thereby improving the reliability of the connecting seat 114 and the pull rod 200. Optionally, the fastener 400 is a threaded part, and the connecting hole 1143 is a threaded hole. After the connecting seat 114 is provided with a connecting protrusion 1141 extending towards the mounting boss 1134, the axial height of the connecting protrusion 1141 along the rotating part 120 can be increased, thereby increasing the axial depth of the connecting hole 1143 for reliable connection with the pull rod 200.

[0094] See Figure 8 and Figure 15In one embodiment, the connecting hole 1143 is a blind hole. That is, the connecting hole 1143 does not penetrate the end of the connecting protrusion 1141 facing the mounting base 113. In this way, when the mounting boss 1134 is bonded to the mounting base 114, glue can be prevented from entering the connecting hole 1143 and causing blockage, which facilitates the connection of the fastener 400 to the mounting base 114 through the connecting hole 1143.

[0095] See Figure 3 and Figure 8 In one embodiment, the base 110 further includes a connector 115, which can be connected to the connector 50. Specifically, the connector 115 is bonded and fixed to the mounting base 113, and the connector 115 can be plugged into the connector 50.

[0096] The connector 115 is cylindrical. One end of the connector 115 is located in the mounting base 113, and the other end of the connector 115 is located in the rotating member 120 and protrudes relative to the rotating member 120. When the rotating member 120 is engaged with the connector 50, one end of the connector 115 can be inserted into the connector 50 to pre-position the connector 50, so that the engaging groove of the connector 50 corresponds to the engaging protrusion 122 of the rotating member 120, thereby facilitating the engagement of the rotating member 120 and the connector 50.

[0097] The outer peripheral wall of the connector 115 is provided with an annular mounting groove 1151. The connecting mechanism 100 also includes a sealing ring 160, which is installed in the mounting groove 1151 and abuts against the end of the mounting base 113 opposite to the connecting base 114. The sealing ring 160 can perform a sealing function. After the connector 50 is connected to the rotating member 120, the sealing ring 160 can seal the connection between the end of the connector 50 and the connector 115, preventing blood from entering the interior of the connector 50. In this embodiment, the sealing ring 160 is a silicone ring. In other embodiments, the sealing ring 160 can also be a rubber ring.

[0098] See Figure 3 and Figure 8 In one embodiment, the outer wall of the connector 115 is provided with an axially extending positioning protrusion 1152, and a mounting groove 1151 is formed between the side of the positioning protrusion 1152 facing the mounting base 113 and the side of the mounting base 113 away from the connecting seat 114. The mounting base 113 and the positioning protrusion 1152 enable reliable positioning of the sealing ring 160, ensuring that the sealing ring 160 is accurately located in the mounting groove 1151, preventing axial displacement of the sealing ring 160, and guaranteeing the sealing effect of the sealing ring 160. The positioning protrusion 1152 is located on the side of the sealing ring 160 away from the mounting base 113 and can abut against the sealing ring 160.

[0099] See Figure 3 and Figure 4In one embodiment, no copper pins are provided in the connector 115. It is understood that when copper pins are provided in the connector 115, the connector 50 needs to have corresponding sockets, and the connection between the connecting mechanism 100 and the connector 50 is achieved through the cooperation of the copper pins and the sockets. This application eliminates the copper pins in the connector 115, which reduces production costs without affecting the connection between the connecting mechanism 100 and the connector 50.

[0100] See Figures 1 to 4 , Figure 16 This application also provides a cable pulling device 10, including a handle 300, a pull rod 200, and a connecting mechanism 100 in any of the above embodiments. The pull rod 200 is detachably connected to the base 110. The handle 300 is disposed at one end of the pull rod 200, and the other end of the pull rod 200 is detachably connected to the base 110 of the connecting mechanism 100.

[0101] The pull rod 200 can be connected to the connector 50 via the connecting mechanism 100, thereby pulling the connector 50 out of the body. For example... Figure 2 As shown, the fastener 400 passes through the pull rod 200 and engages with the connecting hole 1143 of the base 110, thereby achieving a detachable connection between the pull rod 200 and the connecting mechanism 100. Specifically, the fastener 400 is threaded into the wall of the connecting hole 1143.

[0102] The connection process between the connecting mechanism 100 and the connector 50 in this application is as follows: (e.g., ...) Figure 4 and Figure 7 As shown, the anti-rotation member 130 is disengaged from the locking groove 121 and the connecting groove 116, and the anti-rotation member 130 is in the unlocked state, thereby unlocking the rotating member 120. The connector 50 and the joint 115 are initially positioned, with the snap-fit ​​groove and snap-fit ​​protrusion 122 correspondingly arranged. The rotating member 120 is engaged and fixed with the connector 50 through the engagement of the snap-fit ​​protrusion 122 and the snap-fit ​​groove, and the end of the connector 50 abuts against the sealing ring 160 to ensure the sealing of the connection between the end of the connector 50 and the joint 115. The elastic force of the elastic member 150 causes the rotating member 120 to move from the unlocked position to the initial position. Subsequently, the anti-rotation member 130 is pushed into the locking groove 121, and the locking groove 121 limits the anti-rotation member 130 to lock the rotating member 120 to the base 110, and the anti-rotation member 130 is in the locked state.

[0103] The separation process between the connecting mechanism 100 and the connector 50 in this application is as follows: the anti-rotation member 130 is engaged to disengage from the locking groove 121 and the communicating groove 116, thereby unlocking the rotating member 120. Then, the rotating member 120 is rotated from its initial position to the unlocked position. During this process, the rotating member 120 can compress the elastic member 150. As the rotating member 120 rotates from its initial position to the unlocked position, the engaging protrusion 122 gradually disengages from the engaging groove, allowing the rotating member 120 to be separated from the connector 50, and the seat 110 to be separated from the connector 50, thus completing the disassembly of the connector 50.

[0104] See Figure 1 and Figure 16 In one embodiment, the pull rod 200 includes a rod portion 210 and a mounting head 220. The mounting head 220 and the handle 300 are disposed at opposite ends of the rod portion 210, and the mounting head 220 is detachably connected to the base 110. The rod portion 210 is made of stainless steel and is bendable to pass through a perforation in human tissue and extend into the body, and then exit through an opening in the human tissue. Specifically, the mounting head 220 is detachably connected to the base 110 by a fastener 400. In this embodiment, the rod portion 210 and the handle 300 are integrally formed. In other embodiments, the rod portion 210 and the handle 300 are detachably connected, such as by a threaded connection or a snap-fit ​​connection.

[0105] See Figure 1 and Figure 16 In one embodiment, the pull-wire device 10 further includes a blade (not shown) detachably disposed at the end of the pull rod 200 away from the handle 300. The blade is detachably connected to the mounting head 220 and can create a perforation in human tissue to allow the pull rod 200 to pass through the perforation and enter the body. When it is necessary to pull the connector 50 out of the body, the blade is installed onto the mounting head 220, creating a perforation in the human tissue. The blade is then detached from the mounting head 220, and the seat 110 is connected to the mounting head 220 to install the connecting mechanism 100 onto the pull rod 200.

[0106] Then, the connecting mechanism 100 is connected to the connector 50, which is externally positioned through an opening. After connection, the pull rod 200 is pulled, which, through the connecting mechanism 100, moves the connector 50, pulling it from the opening into the body and then out through the perforation. After the installation of the connector 50 is completed, the connecting mechanism 100 is separated from the connector 50, and the connector 50 can then be electrically connected to an external controller. The opening and perforation here are wounds in human tissue. Using the connecting mechanism 100 of this application to connect the connector 50 can reduce the diameter of the opening and perforation, alleviate patient pain, and facilitate patient recovery.

[0107] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0108] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A connection mechanism, characterized in that The application relates to a connector connecting mechanism of a blood pump. The connector connecting mechanism comprises a seat body, a rotating member and a rotation-stopping member. The seat body is detachably connected with a connector of the blood pump. The rotating member is rotatably arranged on the seat body and can be engaged with or separated from the connector when the rotating member rotates relative to the seat body. The rotation-stopping member is movably arranged on one of the seat body and the rotating member.

2. The connection mechanism of claim 1, wherein The other of the seat body and the rotating member is provided with a matching part.

3. The connection mechanism of claim 2, wherein, The rotation-stopping member can be matched with the matching part to prevent the rotating member from rotating relative to the seat body and being separated from the connector. The matching part is arranged on an outer wall of the rotating member and is provided with a locking groove. The rotation-stopping member comprises opposite rotating ends and a locking end. The rotating end is rotatably arranged on the seat body.

4. The connection mechanism of claim 2, wherein The locking end can be engaged with the locking groove to prevent the rotating member from rotating relative to the seat body.

5. The connection mechanism of claim 4, wherein, The connector connecting mechanism further comprises at least one of the following features.

6. The connection mechanism of claim 5, wherein, The locking end is provided with an end face on a side away from the rotating end.

7. The connection mechanism according to any one of claims 1 to 6, characterized in that The locking groove is provided with a groove side wall. The groove side wall is arranged opposite to the end face. When the locking end is engaged with the locking groove, the groove side wall and the end face have a preset interval. The inner wall of the locking end is provided with an avoiding groove. The avoiding groove penetrates through the end face of the locking end away from the rotating end. When the locking end is engaged with the locking groove, the outer wall of the rotation-stopping member is coplanar with the outer wall of at least one of the seat body and the rotating member. The outer wall of the seat body is provided with a containing groove and a communicating groove. The communicating groove can communicate the containing groove and the locking groove. The rotating end is rotatably arranged in the containing groove. When the locking end is engaged with the locking groove, the communicating groove communicates the containing groove and the locking groove. Part of the rotation-stopping member is arranged in the communicating groove and part of the rotation-stopping member is arranged in the locking groove. The circumferential width of the locking groove is greater than the circumferential width of the communicating groove. The wall surface of at least one of the communicating groove and the locking groove is provided with a limiting protrusion. The edge of the outer wall of the rotation-stopping member is provided with a limiting groove. When the locking end is engaged with the locking groove, the limiting protrusion is arranged in the limiting groove to limit the rotation-stopping member in the containing groove and the locking groove. The thickness of the two sides of the rotation-stopping member is greater than the thickness of the middle part of the rotation-stopping member along the circumferential direction of the seat body. The seat body is provided with a matching groove extending along the circumferential direction. The matching groove has two groove walls along the circumferential direction. The inner wall of the rotating member is provided with a matching protrusion. The matching protrusion can be arranged in the matching groove. The length of the matching protrusion along the circumferential direction of the seat body is less than the length of the matching groove along the circumferential direction of the seat body. The connector connecting mechanism further comprises an elastic member. One end of the elastic member abuts against one of the groove walls. The matching protrusion abuts between the other end of the elastic member and the other groove wall.

8. The connection mechanism of claim 7, wherein, The seat body comprises a connecting seat and a mounting seat connected together, the rotating member is rotatably arranged on the mounting seat, the connecting seat is provided with a receiving groove, the mounting seat is provided with a mounting boss, the mounting boss is received in the receiving groove, a first positioning surface is arranged on the mounting boss, an inner circumferential wall of the receiving groove is provided with a second positioning surface, the first positioning surface cooperates with the second positioning surface to prevent the connecting seat from rotating relative to the mounting seat.

9. The connection mechanism of claim 8, wherein, The mounting boss is provided with an avoiding hole, the connecting seat is provided with a connecting protrusion corresponding to the avoiding hole, the connecting seat is used for connecting with a pull rod of a pull wire device, the connecting seat is further provided with a connecting hole for fixing the pull rod, the connecting hole is arranged on the connecting protrusion and penetrates through a side of the connecting seat away from the connecting protrusion. And / or, the first positioning surface and the second positioning surface are both planar surfaces.

10. A line pulling device characterized by The connecting mechanism comprises a pull rod and a seat body as claimed in any one of claims 1 to 9, the pull rod is detachably connected with the seat body.

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