Joint One-Way Slider

Abstract

To address the shortcomings of existing technologies, this utility model provides a one-way joint slider, comprising a connecting block and a rotating block. The connecting block has a connecting hole from front to back, and an adjustment hole perpendicular to the connecting hole, into which an adjustment screw is screwed. A rotating connecting hole is provided on one side wall of the connecting block, excluding the connecting hole and adjustment hole. A bone pin mounting hole is provided on the rotating block, into which the bone pin is mounted. A rotating block connecting hole is provided on the rotating block, and a rotating screw is screwed into both the rotating block connecting hole and the rotating connecting hole to rotatably connect the connecting block and the rotating block.

Description

Technical Field

[0001] This utility model belongs to the field of medical tool technology, specifically relating to a one-way joint slider. Background Technology

[0002] Joints are formed by the connection of adjacent bones through a capsule of connective tissue. The connection between bones is called a joint, and there is a cavity between opposing bone surfaces containing a small amount of synovial fluid. Joints have a relatively large range of motion. Each joint has articular surfaces, a joint capsule, and a joint cavity; some joints also have auxiliary structures such as ligaments, articular discs, and menisci. Because joints are prone to a large range of motion, joint sliders are needed for auxiliary fixation in surgeries treating fractures on both sides of the joint. However, traditional joint sliders can only adjust the distance between the sliders, but cannot adjust the angle at which the bone screw is inserted according to the bone position. Therefore, the invention of a one-way joint slider that can adjust the angle of bone screw insertion is a much-needed product in the market. Utility Model Content

[0003] This utility model addresses the problems existing in the prior art by providing a one-way joint slider, including a connecting block and a rotating block. The connecting block has a connecting hole from front to back, and an adjustment hole perpendicular to the connecting hole, into which an adjustment screw is screwed. A rotating connecting hole is provided on one side wall of the connecting block, excluding the connecting hole and adjustment hole. A bone pin mounting hole is provided on the rotating block, into which the bone pin is mounted. A rotating block connecting hole is provided on the rotating block, and a rotating screw is screwed into both the rotating block connecting hole and the rotating connecting hole to rotatably connect the connecting block and the rotating block.

[0004] Furthermore, the two connecting blocks are fitted together on a connecting rod, and the two connecting blocks are symmetrically arranged with respect to the center of the connecting rod. The two rotating blocks are respectively arranged on the side wall of the two connecting blocks on the same side.

[0005] Furthermore, the two connecting blocks are fitted together on a connecting rod, and the two connecting blocks are arranged symmetrically with respect to the center of the connecting rod. The two rotating blocks are respectively arranged on the opposite side walls of the two connecting blocks.

[0006] Furthermore, the rotating block and the connecting block have meshing positioning teeth on their sidewalls.

[0007] Furthermore, at least one bone needle mounting hole is provided on the rotating block, and the bone needles are provided in a one-to-one correspondence with the bone needle mounting holes.

[0008] This utility model has at least one of the following advantages: 1. The connecting block and the rotating block of this utility model cooperate with each other. The rotating block can rotate within a certain range, avoiding the problem of poor fit with the joint caused by the fixed joint slider of the traditional joint, and is more in line with the position of the bones at both ends of the joint.

[0009] 2. This utility model fixes the position of the connecting block by locking the adjusting screw and fixes the rotation angle of the rotating block by locking the rotating screw, thus ensuring reliable fixing performance.

[0010] 3. The connecting block and the rotating block of this utility model are provided with positioning tooth surfaces on their side walls, which makes it easier to determine the rotation angle of the rotating block and makes the operation more precise. Attached Figure Description

[0011] Figure 1 The diagram shown is a structural schematic of this utility model.

[0012] Figure 2 The diagram shown is a schematic diagram of the installation structure of this utility model. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0014] Example 1 like Figures 1-2 As shown, the joint unidirectional slider includes a connecting block 1 and a rotating block 5. The connecting block 1 has a connecting hole 2 from front to back, and the connecting block 12 has an adjustment hole 3 perpendicular to the connecting hole 2. An adjustment screw 4 is screwed into the adjustment hole 3. The connecting block 1 has a rotating connecting hole on one side wall in addition to the connecting hole 2 and the adjustment hole 3. The rotating block 5 has a bone pin mounting hole 6, and a bone pin 9 is installed in the bone pin mounting hole 6. The rotating block 5 has a rotating block connecting hole 7, and a rotating screw 8 is screwed into the rotating block connecting hole and the rotating connecting hole 7 to make the connecting block 1 and the rotating block 5 rotatably connected.

[0015] Two connecting blocks 1 are fitted together on a connecting rod 10. The two connecting blocks 1 are arranged symmetrically about the center of the connecting rod 10. Two rotating blocks 5 are respectively arranged on opposite side walls of the two connecting blocks 1. Each rotating block 5 is provided with at least one bone needle mounting hole 6, and bone needles 9 are arranged in a one-to-one correspondence with bone needle mounting holes 6.

[0016] The method of using this utility model is as follows: the connecting blocks 1 are respectively fitted onto both ends of the connecting rod 10, and the rotating blocks 5 are connected to the connecting blocks 1 by rotating screws 8. The installation position of the connecting blocks 1 on the connecting rod 10 and the required rotation angle of the rotating blocks 5 are determined according to the position of the bones on both sides of the joint. Then, the bone pins 9 on the two rotating blocks 5 are respectively fixed to the bones at both ends of the joint. The rotation angle of the rotating blocks 5 is adjusted according to the position of the bones. After determining the rotation angle, the rotating screws 8 are tightened to fix the rotating blocks 5. The adjusting screws 4 are tightened so that the adjusting screws 4 abut against the connecting rod 10 to fix the connecting blocks 1. In this way, the positioning of the bones at both ends of the joint is achieved.

[0017] Example 2 In this embodiment, two connecting blocks 1 are jointly sleeved on a connecting rod 10, and the two connecting blocks 1 are symmetrically arranged with respect to the center of the connecting rod 10. Two rotating blocks 5 are respectively disposed on the sidewalls of the two connecting blocks 1 on the same side. The installation direction of the connecting blocks 1 and the rotating blocks 5 can be adaptively selected according to the position of the bones on both sides of the joint.

[0018] Example 3 like Figure 2 As shown, based on Embodiment 1 or Embodiment 2, the rotating block 5 and the connecting block 1 have intermeshing positioning tooth surfaces 11 on their sidewalls. These tooth surfaces 11 help the rotating block to accurately adjust the rotation angle 5, and after fixing, the intermeshing tooth surfaces 11 can effectively prevent the rotating block 5 from rotating, resulting in a better fixing effect.

[0019] This utility model has at least one of the following advantages: 1. The connecting block 1 of this utility model cooperates with the rotating block 5. The rotating block 5 can rotate within a certain range, avoiding the problem of poor fit with the joint caused by the fixed joint slider of the traditional joint, and is more in line with the position of the bones at both ends of the joint.

[0020] 2. This utility model fixes the position of the connecting block 1 by locking the adjusting screw 4 and fixes the rotation angle of the rotating block 5 by locking the rotating screw 8, thus ensuring reliable fixing performance.

[0021] 3. The connecting block 1 and the rotating block 5 are fitted with a positioning tooth surface 11, which makes it easier to determine the rotation angle of the rotating block 5 and makes the operation more precise.

[0022] It should be noted and understood that various modifications and improvements can be made to the present invention as described in the above description without departing from the spirit and scope of the claims. Therefore, the scope of the claimed technical solutions is not limited to any specific exemplary teachings given.

Claims

1. Joint unidirectional slider, characterized in that, include: The connecting block and the rotating block are provided. The connecting block has connecting holes from front to back, and an adjustment hole is provided perpendicular to the connecting holes. An adjustment screw is screwed into the adjustment hole. In addition to the connecting holes and adjustment holes, a rotating connecting hole is provided on one side wall of the connecting block. A bone pin mounting hole is provided on the rotating block, and the bone pin is placed in the bone pin mounting hole. The rotating block has a rotating block connecting hole. A rotating screw is screwed into the rotating block connecting hole and the rotating connecting hole to make the connecting block and the rotating block rotatably connected.

2. The unidirectional articulating slider of claim 1, wherein, Two connecting blocks are fitted together on a connecting rod, and the two connecting blocks are symmetrically arranged with respect to the center of the connecting rod. Two rotating blocks are respectively set on the side wall of the two connecting blocks on the same side.

3. The unidirectional articulating slider of claim 1, wherein: Two connecting blocks are fitted together on a connecting rod, and the two connecting blocks and the connecting rod are centrally symmetrically arranged. Two rotating blocks are respectively set on the opposite side walls of the two connecting blocks.

4. The joint unidirectional slider according to claim 1, characterized in that, The rotating block and the connecting block have meshing positioning teeth on their sidewalls.

5. The unidirectional articulating slider of claim 1, wherein, The rotating block is provided with at least one bone needle mounting hole, and the bone needles are provided in a one-to-one correspondence with the bone needle mounting holes.

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