Clamping module with rotation function

Abstract

The present invention relates to the technical field of medical devices, and specifically discloses a clamping module with a rotating function. Among them, the clamping module with a rotating function includes: a clamping mechanism for clamping a puncture needle; a connecting mechanism, one end of which is fixedly connected to the clamping mechanism and the other end is fixedly connected to a rotating mechanism; a rotating mechanism for rotating on the connecting mechanism and capable of driving the rotation of the clamping mechanism when rotating. The clamping module with a rotating function provided by the present invention is provided with a clamping mechanism and a rotating mechanism. The clamping mechanism can realize the clamping of the puncture needle, and the rotating mechanism can drive the clamping mechanism to rotate, so as to facilitate the operator to observe the process of assembling the puncture needle on the clamping mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a clamping module with a rotation function. Background Art

[0002] At present, the application of ultrasound equipment in clinical diagnosis and treatment has become very popular, and has made great contributions to doctors' accurate understanding of patients' conditions, formulation of medical plans and auxiliary treatment.

[0003] Ultrasound is now widely used for puncture guidance, but it is still manually performed. After the probe is placed on the surface of the tissue to be tested, the depth of blood vessels and other tissues is manually judged by ultrasound images, and then manual puncture is performed. This requires three manual judgment operations, such as how to quickly scan the effective area with an ultrasound probe, how to judge the depth of blood vessels and other tissues on ultrasound images, and how to choose the appropriate puncture position and puncture angle for puncture.

[0004] By using ultrasonic equipment to scan and locate the puncture target, the puncture point of the puncture needle can be intelligently determined, and the machine can automatically perform the puncture operation. When using ultrasonic equipment to perform infusion operations on the puncture target, it is necessary to use a disposable infusion puncture needle commonly used on the market. Since the shape of the existing puncture needle is fixed and the inherent operating habits are used, the clamping structure used has certain limitations. When assembling the puncture needle, the operator cannot intuitively see the assembly status. Therefore, how to intuitively see the assembly process has become a technical problem that technicians in this field need to solve urgently. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art and provides a clamping module with a rotation function to solve the problem in the prior art.

[0006] As one aspect of the present invention, a clamping module with a rotation function is provided, wherein the clamping module with a rotation function comprises:

[0007] A clamping mechanism, wherein the clamping mechanism is used to clamp the puncture needle;

[0008] A connecting mechanism, one end of which is fixedly connected to the clamping mechanism, and the other end of which is fixedly connected to the rotating mechanism;

[0009] The rotating mechanism is used to rotate on the connecting mechanism and can drive the clamping mechanism to rotate when rotating.

[0010] Preferably, a first pit and a second pit are provided on the outer surface of the other end of the connecting mechanism, and the first pit and the second pit are arranged at an interval.

[0011] Preferably, the rotating mechanism includes a sliding connecting member, a locking member, an elastic member, and a rotating shaft fixing member. One end of the sliding connecting member is sleeved on the connecting mechanism, and the other end of the sliding connecting member is an operating end. The operating end can drive the sliding connecting member to rotate on the connecting mechanism. The locking member is connected to one end of the elastic member, and the other end of the elastic member is connected to one end of the sliding connecting member. The locking member can slide between the first pit and the second pit under the action of the operating end. The rotating shaft fixing member is fixedly connected to the connecting mechanism, and the rotating shaft fixing member can limit the rotation angle of the sliding connecting member on the connecting mechanism.

[0012] Preferably, the sliding connecting member includes a connecting member main body portion, an operating portion, a first limiting hole, and a locking member mounting hole. The operating portion is connected to the connecting member main body portion. The first limiting hole is provided on the connecting member main body portion, and the sliding connecting member is sleeved on the connecting mechanism through the first limiting hole. The locking member mounting hole is provided on the side surface of the connecting member main body portion, and the opening direction of the locking member mounting hole is perpendicular to the opening direction of the first limiting hole. The locking member mounting hole is used for mounting the locking member and the elastic member.

[0013] Preferably, the sliding connecting member is further provided with a first limiting block and a second limiting block. The first limiting block and the second limiting block are respectively provided on the connecting member main body portion, and the central connection line between the first limiting block and the first limiting hole and the central connection line between the second limiting block and the first limiting hole are arranged at an angle.

[0014] Preferably, a limiting ring and a limiting post are provided at the other end of the connecting mechanism. The limiting ring and the limiting post are respectively located on both sides of the sliding connecting member. The limiting ring is sleeved on the connecting mechanism and fixedly connected to the connecting mechanism. The limiting post is located on the end surface of the other end of the connecting mechanism, and the outer side surface of the limiting post forms a first limiting surface.

[0015] Preferably, the rotating shaft fixing member includes a fixing member main body portion, a second limiting hole, and a third limiting block. The second limiting hole is provided on the fixing member main body portion, and the rotating shaft fixing member is sleeved on the limiting post through the second limiting hole. The shape of the second limiting hole matches the shape of the limiting post. A second limiting surface is formed on one side of the fixing member main body portion, and the second limiting surface contacts the sliding connecting member. The third limiting block is provided on the outer side of the fixing member main body portion, and the third limiting block can rotate within the range limited by the first limiting block and the second limiting block.

[0016] Preferably, the shape of the first limiting hole matches the shape of the connecting mechanism.

[0017] Preferably, a groove is further provided at the other end of the connecting mechanism, the groove is provided between the first pit and the second pit, and the locking member can slide between the first pit and the second pit along the groove.

[0018] Preferably, the rotating mechanism further includes a bearing, and the sliding connecting member is connected to the connecting mechanism through the bearing.

[0019] The clamping module with a rotating function provided by the present invention is provided with a clamping mechanism and a rotating mechanism. The clamping mechanism can realize the clamping of the puncture needle, and the rotating mechanism can drive the clamping mechanism to rotate, so as to facilitate the operator to observe the process of assembling the puncture needle by the clamping mechanism. Description of the Drawings

[0020] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the drawings:

[0021] Figure 1 It is a schematic structural diagram of the clamping module with a rotating function provided by the present invention and arranged on an ultrasonic puncture guiding device.

[0022] Figure 2 It is a schematic structural diagram of a specific embodiment of the clamping mechanism provided by the present invention.

[0023] Figure 3 It is a schematic structural diagram of a specific embodiment of the sliding connecting member provided by the present invention.

[0024] Figure 4 It is a schematic structural diagram of a specific embodiment of the rotating shaft fixing member provided by the present invention.

[0025] Figure 5 It is an exploded schematic diagram of the clamping module with a rotating function provided by the present invention.

[0026] Figure 6 It is a schematic diagram of a position state (penetrating into the target) of the puncture module on the ultrasonic puncture guiding device provided by the present invention.

[0027] Figure 7 It is a sectional view in one direction of the rotating structure of the clamping mechanism in the needle-loading state provided by the present invention.

[0028] Figure 8 It is a sectional view in another direction of the rotating structure of the clamping mechanism in the working state provided by the present invention.

[0029] Figure 9 It is a schematic diagram of the rotating structure of the clamping mechanism in the working state provided by the present invention.

[0030] Figure 10 Schematic diagram of the rotating structure of the clamping mechanism provided by the present invention in the needle-loading state.

[0031] Figure 11 Overall schematic diagram of the ultrasonic puncture guiding device provided by the present invention. Specific embodiments

[0032] The following will describe the specific embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not intended to limit the present invention.

[0033] As a first aspect of the present invention, there is provided a clamping module with a rotating function. As shown in Figure 1 , the clamping module with a rotating function includes:

[0034] A clamping mechanism 230 for clamping a puncture needle;

[0035] A connecting mechanism 231, one end of which is fixedly connected to the clamping mechanism, and the other end is fixedly connected to the rotating mechanism;

[0036] A rotating mechanism 270 for rotating on the connecting mechanism and capable of driving the rotation of the clamping mechanism during rotation.

[0037] The clamping module with a rotating function provided by the present invention is provided with a clamping mechanism and a rotating mechanism. The clamping mechanism can clamp the puncture needle, and the rotating mechanism can drive the clamping mechanism to rotate, so as to facilitate the operator to observe the process of assembling the puncture needle on the clamping mechanism.

[0038] It should be noted that Figure 1 The schematic diagram of the structure of the clamping module with a rotating function is arranged on the ultrasonic puncture guiding device.

[0039] As a specific embodiment of the connecting mechanism 231, as shown in Figure 2 , on the outer surface of the other end of the connecting mechanism 231, there are provided a first pit 2311 and a second pit 2312, and the first pit 2311 and the second pit 2312 are arranged at intervals.

[0040] As a specific embodiment of the rotating mechanism 270, as shown in Figure 5 and Figure 8As shown, the rotating mechanism 270 includes a sliding connector 271, a locking member 272, an elastic member 273, and a rotating shaft fixing member 274. One end of the sliding connector 271 is sleeved on the connecting mechanism 231, and the other end of the sliding connector 271 is an operating end. The operating end can drive the sliding connector 271 to rotate on the connecting mechanism 231. The locking member 272 is connected to one end of the elastic member 273, and the other end of the elastic member 273 is connected to one end of the sliding connector 271. The locking member 272 can slide between the first pit 2311 and the second pit 2312 under the action of the operating end. The rotating shaft fixing member 274 is fixedly connected to the connecting mechanism 231, and the rotating shaft fixing member 274 can limit the rotation angle of the sliding connector 271 on the connecting mechanism 231.

[0041] Preferably, the locking member 272 includes locking steel balls.

[0042] Specifically, a groove 2313 is further provided at the other end of the connecting mechanism 231. The groove 2313 is provided between the first pit 2311 and the second pit 2312. The locking member 272 can slide between the first pit 2311 and the second pit 2312 along the groove 2313.

[0043] It should be noted that the groove 2313 can guide the rotation process, facilitating the locking steel balls to enter the corresponding pits more smoothly. It should also be noted that the depth of the groove 2313 is set to be less than the depth of the first pit and the depth of the second pit, as Figure 7 shown.

[0044] It can be understood that when the clamping mechanism 230 is in the working state, as Figure 2 and 6 shown, the locking steel balls are pressed in the first pit 2311 under the action of the elastic member 273. When the puncture needle needs to be assembled, the clamping mechanism 230 is flipped. Under the action of an external force, the connecting mechanism 231 rotates, the elastic member 273 deforms, and the locking steel balls slide along the groove 2313 to the second pit 2312, locking the clamping mechanism 230 to the position for assembling the puncture needle, as Figure 1 shown.

[0045] Further specifically, as Figure 3As shown, the sliding connecting member 271 includes: a connecting member main body portion 2715, an operating portion 2716, a first limiting hole 2711, and a locking member mounting hole 2712. The operating portion 2716 is connected to the connecting member main body portion 2715. The first limiting hole 2711 is provided on the connecting member main body portion 2715, and the sliding connecting member 271 is sleeved on the connecting mechanism 231 through the first limiting hole 2711. The locking member mounting hole 2712 is provided on the side surface of the connecting member main body portion 2715, and the opening direction of the locking member mounting hole 2712 is perpendicular to the opening direction of the first limiting hole 2711. The locking member mounting hole 2712 is used for mounting the locking member 272 and the elastic member 273.

[0046] Specifically, the elastic member 273 is fixedly connected to the locking member mounting hole 2712 through an elastic member fixing member 277.

[0047] It should be noted that the operating portion 2716 includes a bent plate. One end of the bent plate is connected to the connecting member main body portion 2715, and the other end of the bent plate is an installation end.

[0048] It should be understood that an operator can drive the sliding connecting member 271 to rotate on the connecting mechanism 231 by controlling the operating portion 2716.

[0049] Further specifically, a first limiting block 2713 and a second limiting block 2714 are further provided on the sliding connecting member 271. The first limiting block 2713 and the second limiting block 2714 are respectively provided on the connecting member main body portion 2715, and the central connection line between the first limiting block 2713 and the first limiting hole 2711 and the central connection line between the second limiting block 2714 and the first limiting hole 2711 are arranged at an angle.

[0050] Preferably, Figure 3 the angle between the central connection line between the first limiting block 2713 and the first limiting hole 2711 and the central connection line between the second limiting block 2714 and the first limiting hole 2711 shown is 90°.

[0051] It should be understood that the specific angle size can be set according to requirements and is not limited herein.

[0052] Specifically, as Figure 2As shown, a limiting ring 2314 and a limiting post 2316 are provided at the other end of the connecting mechanism 231. The limiting ring 2314 and the limiting post 2316 are respectively located on both sides of the sliding connecting member 271. The limiting ring 2314 is sleeved on the connecting mechanism 231 and fixedly connected to the connecting mechanism 231. The limiting post 2316 is located on the end face of the other end of the connecting mechanism 231, and a first limiting surface 2315 is formed on the outer side surface of the limiting post 2316.

[0053] Specifically, as Figure 4 shown, the rotating shaft fixing member 274 includes a fixing member main body portion 2745, a second limiting hole 2741 and a third limiting block 2742. The second limiting hole 2741 is provided on the fixing member main body portion 2745, and the rotating shaft fixing member 274 is sleeved on the limiting post 2316 through the second limiting hole 2741. The shape of the second limiting hole 2741 matches the shape of the limiting post 2316. A second limiting surface 2743 is formed on one side of the fixing member main body portion 2745, and the second limiting surface 2743 contacts the sliding connecting member 271. The third limiting block 2742 is provided on the outside of the fixing member main body portion 2745, and the third limiting block 2742 can rotate within the range restricted by the first limiting block 2713 and the second limiting block 2714.

[0054] As Figure 9 shown, the first limiting block 2713 and the second limiting block 2714 limit the maximum rotation angle of the clamping mechanism 230 by blocking the third limiting block 2742. In this embodiment, Figure 9 the set rotation angle shown is 90°.

[0055] More specifically, the shape of the first limiting hole 2711 matches the shape of the connecting mechanism 231.

[0056] It should be noted that the limiting ring 2314 and the limiting post 2316 can limit the sliding connecting member 271.

[0057] Preferably, the connecting mechanism 231 includes a round handle, and the limiting ring 2314 is sleeved on the round handle.

[0058] As a specific implementation manner, the first limiting hole 2711 includes a round hole, the second limiting hole 2741 includes a square hole, and the limiting post 2316 includes a square limiting post.

[0059] It should be understood that the second limiting hole 2741 and the limiting post 2316 can also be other matching shapes, such as other non-circular figures, such as triangles, pentagons, etc.

[0060] The rotating shaft fixing member 274 is fixedly connected to the connecting mechanism 231. As Figure 5 and Figure 10 shown, in this embodiment, it can be fixedly connected by fixing screws 278. The first limiting surface 2315 is in contact with the second limiting surface 2743. After the two are fixedly connected, the connecting mechanism 231 can rotate between the first limiting edge 2314 and the second limiting edge 2744. The second limiting hole 2741 cooperates with the limiting post 2316 to prevent relative rotation between the rotating shaft fixing member 274 and the connecting mechanism 231.

[0061] Specifically, the rotating mechanism 270 further includes a bearing, and the sliding connecting member 271 is connected to the connecting mechanism 231 through the bearing.

[0062] More specifically, as Figure 1 shown, the bearing includes a first bearing 275 and a second bearing 276.

[0063] As the second aspect of the present invention, a puncture module is provided. Wherein, as Figure 6 shown, the puncture module 200 includes a first motor 210, a second motor 220, a connecting bracket 240, and the clamping module with a rotating function described above. The connecting bracket 240 is respectively connected to the fixed end of the first motor 210 and the output end of the second motor 220. The clamping module with a rotating function is arranged at the output end of the first motor 210. The output end of the first motor 210 can drive the clamping module with a rotating function to perform a reciprocating linear motion along a first direction, and the output end of the second motor 220 can drive the connecting bracket 240 to perform a reciprocating linear motion along a second direction. The clamping module with a rotating function can realize the clamping and fixing of the puncture needle and rotation.

[0064] For the puncture module provided by the present invention, since the clamping module with a rotating function described above is adopted, the puncture needle is fixed by the clamping mechanism, and the rotating mechanism can drive the clamping mechanism to rotate, so that it is convenient for the operator to observe the process of assembling the puncture needle by the clamping mechanism, and the clamping and manual pressing and ejecting of the puncture needle can be realized. The structure is simple and compact.

[0065] It should be noted that, as Figure 6 known, the mounting end of the sliding connecting member 271 in the clamping module with a rotating function can be fixedly connected to the connecting bracket 240.

[0066] More specifically, the first direction is perpendicular to the supporting plane, and the second direction forms an angle a with the supporting plane.

[0067] Preferably, the value range of the angle a is 10° to 70°.

[0068] It should be noted that the support plane is Figure 6 As shown, P represents the surface of the human skin. The connecting bracket 240 is fixedly connected to the fixed end of the first motor 210 and the output end of the second motor 220 respectively. The clamping module 230 is fixedly connected to the output end of the first motor 210. The output end of the first motor 210 can drive the clamping module 230 to perform a reciprocating linear motion in the M1 direction. The output end of the second motor 220 can drive the module composed of the connecting bracket 240, the first motor 210, and the clamping module 230 to perform a reciprocating linear motion in the Z2 direction. The Z2 direction is perpendicular to P, and the M1 direction forms an angle a with P. The value range of a is 10° to 70°, and 15°, 20°, 30°, 45°, and 60° are preferably selected. Figure 6 As shown, the included angle a is 20°.

[0069] It should be understood that the first motor 210 can adjust the puncture depth, and the second motor 220 can realize the needle insertion process. In this way, through the simple combination of the two motors, accurate puncture of the puncture target detected by the detection module 110 can be achieved.

[0070] In addition, when the usage purposes are different, the corresponding goals can be achieved by adjusting the stroke of the motor and the value of the included angle a.

[0071] It also should be noted that the first motor 210 and the second motor 220 can specifically be linear propulsion motors. Compared with traditional motors, since the output end of the transmission motor is a rotational motion and needs to be converted into a linear motion through a lead screw or the like, the advantage of the linear propulsion motor is that the output end of the motor directly performs a linear propulsion motion, reducing the number of assembly parts and assembly errors.

[0072] To realize the movements of the first motor 210 and the second motor 220, as Figure 6 shown, the puncture module 200 further includes a first slide rail 250 and a second slide rail 260. The second slide rail 260 is arranged on the connecting bracket 240 and is used to provide a sliding track for the first motor 210 to perform a reciprocating linear motion in the first direction. The first slide rail 250 is arranged on the probe housing 120 and is used to provide a sliding track for the second motor 220 to perform a reciprocating linear motion in the second direction.

[0073] Regarding the specific implementation manner of the clamping module with a rotation function in the puncture module provided by the present invention, reference can be made to the previous description, and details will not be elaborated here.

[0074] As the third aspect of the present invention, an ultrasonic puncture guiding device is provided. As Figure 11 shown, the ultrasonic puncture guiding device includes:

[0075] An ultrasonic probe module 100, which can be communicatively connected to a host module 300, is used to detect a puncture target and send the detected ultrasonic signal of the puncture target to the host module 300;

[0076] A puncture control module 500, which can be communicatively connected to the host module 300, is used to form a puncture control signal according to the position information of the puncture target obtained after the host module processes the ultrasonic signal;

[0077] The puncture module 200 described above, which is electrically connected to the puncture control module 500, is used to puncture the puncture target according to the puncture control signal.

[0078] The ultrasonic puncture guiding device provided by the present invention detects a puncture target through an ultrasonic probe module and forms an ultrasonic signal to be sent to the host module. After the host module processes the ultrasonic signal, the position information of the puncture target is extracted and sent to the puncture control module. The puncture control module forms a control signal according to the position information of the puncture target to control the puncture module to automatically puncture the puncture target. Moreover, since the puncture module adopts the clamping module with a rotating function described above, the puncture needle is fixed by a clamping mechanism, and the clamping mechanism can be driven to rotate by a rotating mechanism, so as to facilitate the operator to observe the process of assembling the puncture needle on the clamping mechanism. Therefore, the ultrasonic puncture guiding device provided by the present invention can not only accurately identify and locate the puncture target, but also has the advantage of facilitating the operator to observe the process of assembling the puncture needle on the clamping mechanism.

[0079] Specifically, as Figure 6 shown, the ultrasonic probe module 100 includes a probe housing 120 and a detection module 110 arranged at one end of the probe housing 120. The detection module 110 can be communicatively connected to the host module 300, is used to detect a puncture target, and send the detected ultrasonic signal of the puncture target to the host module 300.

[0080] Specifically, the ultrasonic puncture guiding device further includes a bracket module 400, which is used to support the ultrasonic probe module 100, the puncture control module 500 and the puncture module 200.

[0081] The specific implementation manner of the clamping module with a rotating function of the ultrasonic puncture guiding device provided by the present invention can refer to the previous description and will not be elaborated here.

[0082] It is understandable that the above embodiments are merely exemplary embodiments adopted to illustrate the principles of the present invention. However, the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims

1. A clamping module with a rotating function, characterized in that The clamping module with a rotating function includes: a clamping mechanism for clamping a puncture needle; a connecting mechanism, one end of which is fixedly connected to the clamping mechanism and the other end is fixedly connected to a rotating mechanism; a rotating mechanism for rotating on the connecting mechanism and capable of driving the clamping mechanism to rotate during rotation; On the outer surface of the other end of the connecting mechanism, a first pit and a second pit are provided, and the first pit and the second pit are arranged at intervals; The rotating mechanism includes a sliding connecting piece, a locking piece, an elastic piece and a rotating shaft fixing piece. One end of the sliding connecting piece is sleeved on the connecting mechanism, and the other end of the sliding connecting piece is an operating end which can drive the sliding connecting piece to rotate on the connecting mechanism. The locking piece is connected to one end of the elastic piece, and the other end of the elastic piece is connected to one end of the sliding connecting piece. The locking piece can slide between the first pit and the second pit under the action of the operating end. The rotating shaft fixing piece is fixedly connected to the connecting mechanism, and the rotating shaft fixing piece can limit the rotation angle of the sliding connecting piece on the connecting mechanism.

2. The clamping module with a rotating function according to claim 1, wherein, The sliding connecting piece includes a connecting piece main body part, an operating part, a first limiting hole and a locking piece mounting hole. The operating part is connected to the connecting piece main body part. The first limiting hole is provided on the connecting piece main body part, and the sliding connecting piece is sleeved on the connecting mechanism through the first limiting hole. The locking piece mounting hole is provided on the side surface of the connecting piece main body part, and the opening direction of the locking piece mounting hole is perpendicular to the opening direction of the first limiting hole. The locking piece mounting hole is used for mounting the locking piece and the elastic piece.

3. The clamping module with a rotating function according to claim 2, wherein The sliding connecting piece is further provided with a first limiting block and a second limiting block which are respectively arranged on the connecting piece main body part, and the central connection line between the first limiting block and the first limiting hole and the central connection line between the second limiting block and the first limiting hole are arranged at an angle.

4. The clamping module with a rotating function according to claim 3, wherein The other end of the connecting mechanism is provided with a limiting ring and a limiting post. The limiting ring and the limiting post are respectively located on both sides of the sliding connecting piece. The limiting ring is sleeved on the connecting mechanism and fixedly connected to the connecting mechanism. The limiting post is located on the end surface of the other end of the connecting mechanism, and the outer side surface of the limiting post forms a first limiting surface.

5. The clamping module with a rotating function according to claim 4, characterized in that, The rotating shaft fixing piece includes a fixing piece main body part, a second limiting hole and a third limiting block. The second limiting hole is provided on the fixing piece main body part, and the rotating shaft fixing piece is sleeved on the limiting post through the second limiting hole. The shape of the second limiting hole matches the shape of the limiting post. A second limiting surface is formed on one side of the fixing piece main body part, and the second limiting surface contacts the sliding connecting piece. The third limiting block is arranged on the outer side of the fixing piece main body part, and the third limiting block can rotate within the range limited by the first limiting block and the second limiting block.

6. The clamping module with a rotating function according to claim 2, characterized in that The shape of the first limiting hole matches the shape of the connecting mechanism.

7. The clamping module with a rotating function according to claim 2, wherein The other end of the connecting mechanism is further provided with a groove, the groove is arranged between the first pit and the second pit, and the locking member can slide between the first pit and the second pit along the groove.

8. The clamping module with a rotating function according to claim 1, wherein, The rotating mechanism further includes a bearing, and the sliding connecting member is connected to the connecting mechanism through the bearing.

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