Total internal cruciate ligament positioning device

Abstract

The utility model relates to a total internal cruciate ligament positioning device, which belongs to the field of medical instruments and comprises a handle, a guide groove is formed in the handle, a drill bushing is embedded in the guide groove, a pressing block is rotatably connected to the handle, a positioning assembly for controlling the positioning of the pressing block is arranged on the handle, the drill bushing is embedded between the handle and the pressing block, and a retaining assembly for limiting the drill bushing is arranged on the pressing block. A supporting rod is arranged on the handle, a guide hole is formed in the supporting rod, and one end, extending out of the guide groove, of the drill bushing is embedded into the guide hole. The pressing block and the handle are positioned through the positioning assembly, then the drill bushing sequentially penetrates through the guide groove and the guide hole, the drill bushing is stopped and limited through the stopping assembly, and the precision degree of the drill bushing is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical devices, in particular to a positioning device for the anterior cruciate ligament. BACKGROUND

[0002] At present, in knee surgery, reconstruction of the anterior cruciate ligament is a complex procedure, which usually involves accurately determining the position of the new ligament to replace the damaged ligament. The current common solutions mainly include two kinds of methods: manual measurement marking method based on X-ray image and automatic positioning method with the help of computer navigation system. The former depends on the experience and skill of the surgeon, and is easily affected by subjective factors, resulting in large positioning error. The latter can improve the positioning accuracy through software calculation, but in actual operation, there are still problems such as high equipment cost and complex operation.

[0003] Although the existing technical means can achieve relatively accurate positioning to some extent, these technical means have poor adaptability to individual differences of different patients, especially for those patients with complex anatomical structure or who have received multiple surgical treatments. The traditional positioning system often fails to achieve the ideal accuracy. CONTENT OF THE UTILITY MODEL

[0004] In order to improve the above problems, the present application provides a positioning device for the anterior cruciate ligament.

[0005] The positioning device for the anterior cruciate ligament provided by the present application adopts the following technical scheme:

[0006] The positioning device for the anterior cruciate ligament comprises a handle, a guide groove is formed in the handle, the guide groove is used for embedding a drill sleeve, a pressing block is rotatably connected to the handle, a positioning assembly for positioning the pressing block is arranged on the handle, the drill sleeve is embedded between the handle and the pressing block, a retreat-stop assembly for limiting the drill sleeve is arranged on the pressing block, a supporting rod is arranged on the handle, a guide hole is formed in the supporting rod, and the guide hole is used for embedding an end of the drill sleeve extending out of the guide groove.

[0007] Through the above technical scheme, the operator can move the handle to a suitable position, position the pressing block and the handle through the positioning assembly, and then pass the drill sleeve through the guide groove and the guide hole in sequence, and limit the drill sleeve through the retreat-stop assembly, thereby improving the accuracy of the drill sleeve and facilitating the treatment of the patient.

[0008] Preferably, the positioning assembly comprises a positioning plate and a positioning column, the positioning plate is rotatably connected to the handle, a positioning groove is formed in the pressing block, the positioning groove is used for embedding the positioning plate, and the positioning column is fixedly connected to the positioning plate.

[0009] By adopting the technical scheme, when the pressing block is rotated to a proper position, the operator can rotate the positioning column, the rotation of the positioning column can drive the rotation of the positioning plate, the positioning plate can be rotated into the positioning groove, the positioning plate can limit the pressing block, the possibility of movement of the pressing block is reduced, and the stability of the pressing block is improved.

[0010] Preferably, the retreat-stop assembly comprises a clamping block and a first torsional spring, the clamping block is rotationally connected with the pressing block, the clamping block is matched with the groove on the drill sleeve, and the first torsional spring is installed on the rotation shaft of the clamping block.

[0011] By adopting the technical scheme, when the drill sleeve is embedded into the guide groove, the groove on the drill sleeve is in contact with the clamping block, the clamping block applies a force to the drill sleeve under the action of the first torsional spring, thereby limiting the retreat of the drill sleeve, and the stability of the drill sleeve is improved.

[0012] Preferably, the clamping block is fixedly connected with a control block.

[0013] By adopting the technical scheme, when the drill sleeve needs to be taken out, the operator can apply a force to the control block, the movement of the control block can drive the movement of the clamping block, the clamping block moves away from the drill sleeve, the clamping block cannot be in contact with the drill sleeve, and the drill sleeve is taken out.

[0014] Preferably, a sliding groove is formed in the handle, an adjusting rod is fixedly connected to the supporting rod, the adjusting rod slides in the sliding groove, an auxiliary groove is formed in the groove wall of the sliding groove, an auxiliary block is fixedly connected to the adjusting rod, the auxiliary block slides in the auxiliary groove, and a positioning member is arranged on the handle and used for positioning the adjusting rod in the sliding groove.

[0015] By adopting the technical scheme, the sliding groove can limit the sliding of the adjusting rod, the auxiliary groove can limit the auxiliary block, the sliding of the adjusting rod is further limited, the operator can drive the movement of the supporting rod by moving the adjusting rod, the position of the guide hole is adjusted, the adjusting rod is positioned in the sliding groove by the positioning member, the supporting rod is positioned, and the drill sleeve can pass through the guide hole.

[0016] Preferably, the positioning member is a positioning bolt, the positioning bolt is threadedly connected with the handle, and the positioning bolt abuts against the groove bottom of the sliding groove and the adjusting rod.

[0017] By adopting the technical scheme, when the adjusting rod is moved to a proper position, the operator rotates the positioning bolt, the positioning bolt is rotated to abut against the adjusting rod, the positioning bolt can apply a force to the adjusting rod, the auxiliary block abuts against the groove wall of the auxiliary groove, and the positioning of the adjusting rod is realized.

[0018] Preferably, the pressing block is rotatably connected to a limit rod, the positioning plate is provided with a limit slot for the limit rod to be embedded in the limit slot, and the pressing block is provided with a control member for controlling the rotation of the limit rod.

[0019] Preferably, the control member is a second torsion spring, and the second torsion spring is mounted on the rotating shaft of the limiting rod.

[0020] By adopting the above technical solution, when the positioning plate is located in the positioning groove, the limiting rod can be embedded in the limiting groove under the action of the second torsion spring. The limiting rod can limit the positioning plate, reducing the possibility of the positioning plate sliding out of the positioning groove, and further improving the positioning stability of the pressure block.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. Through the setting of the guide groove, pressure block and guide hole, the operator can move the handle to the appropriate position, position the pressure block and handle through the positioning component, and then pass the drill sleeve through the guide groove and guide hole in sequence. The drill sleeve is stopped by the backstop component, which improves the accuracy of the drill sleeve and facilitates the patient's treatment;

[0023] 2. Through the setting of the clamping block and the first torsion spring, when the drill sleeve is embedded in the guide groove, the groove on the drill sleeve contacts the clamping block. Under the action of the first torsion spring, the clamping block applies force to the drill sleeve, thereby preventing the drill sleeve from retreating and improving the stability of the drill sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the positioning device in Example 1 of the present application.

[0025] Figure 2 It is a schematic diagram of the overall structure of the anti-retraction component in Example 1 of the present application.

[0026] Figure 3 It is a schematic diagram of the exploded structure used to reflect the adjusting rod and the pressing block in Example 1 of the present application.

[0027] Figure 4 It is a schematic diagram of the overall structure of the limiting rod and the second torsion spring in the second embodiment of the present application.

[0028] Explanation of the accompanying drawings: 1. Handle; 11. Guide groove; 12. Sliding groove; 13. Auxiliary groove; 14. Positioning bolt; 2. Pressure block; 21. Positioning groove; 22. Limiting rod; 23. Second torsion spring; 3. Positioning assembly; 31. Positioning plate; 311. Limiting groove; 32. Positioning column; 4. Retraction prevention assembly; 41. Block; 411. Control block; 42. First torsion spring; 5. Support rod; 51. Guide hole; 6. Adjusting rod; 61. Auxiliary block. DETAILED DESCRIPTION

[0029] In order to make the purpose, features, and advantages of the invention of this application more obvious and easy to understand, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0030] The following is combined with Figures 1-4 This application is described in further detail.

[0031] Example 1:

[0032] The present application embodiment discloses a fully internal cruciate ligament positioning device, such as Figure 1 As shown, it includes a handle 1, a pressure block 2 is rotatably connected to the handle 1, and the drill sleeve is embedded between the handle 1 and the pressure block 2; a guide groove 11 is opened on the handle 1, and the guide groove 11 is for the drill sleeve to be embedded. The guide groove 11 can limit the drill sleeve, thereby improving the stability of the drill sleeve when moving.

[0033] like Figure 1 As shown, the handle 1 is provided with a positioning assembly 3 for controlling the positioning of the pressure block 2. The positioning assembly 3 includes a positioning plate 31 and a positioning post 32. The positioning plate 31 is rotatably connected to the handle 1. The cross-section of the positioning plate 31 is L-shaped. The pressure block 2 is provided with a positioning groove 21 for the positioning plate 31 to be inserted into. The positioning post 32 is fixedly connected to the positioning plate 31. When the drill sleeve needs to be inserted, the operator can rotate the pressure block 2 until it fits into the handle 1 and then rotate the positioning post 32. The rotation of the positioning post 32 drives the rotation of the positioning plate 31, causing the positioning plate 31 to rotate into the positioning groove 21 and abut against the bottom of the positioning groove 21, thereby limiting the position of the pressure block 2 and facilitating the pressure block 2 to limit the position of the drill sleeve.

[0034] like Figure 1 and 2As shown, the pressing block 2 is provided with a retreat-stop assembly 4 for limiting the drill sleeve, the retreat-stop assembly 4 comprises a clamping block 41 and a first torsion spring 42, the clamping block 41 is rotationally connected with the pressing block 2, the clamping block 41 is matched with the groove on the drill sleeve, and the clamping block 41 is integrally formed with a control block 411; the first torsion spring 42 is installed on the rotation shaft of the clamping block 41. When the pressing block 2 is attached to the handle 1, the clamping block 41 is movable into the guide groove 11 under the action of the first torsion spring 42; when the drill sleeve is embedded into the guide groove 11, the clamping block 41 is matched with the groove on the drill sleeve, thereby limiting the retreat of the drill sleeve. When it is needed to take out the drill sleeve, the operator can exert a force on the control block 411, the movement of the control block 411 can drive the movement of the clamping block 41, so that the clamping block 41 slides out of the guide groove 11, the limiting of the clamping block 41 on the drill sleeve is released, thereby achieving the taking out of the drill sleeve.

[0035] As shown in the figure, Figure 3 The handle 1 is provided with a sliding groove 12, the handle 1 is slidingly connected with an adjusting rod 6, the adjusting rod 6 is provided with a scale, the adjusting rod 6 is slidingly located in the sliding groove 12, and the sliding groove 12 can limit the sliding of the adjusting rod 6. The groove wall of the sliding groove 12 is provided with an auxiliary groove 13, the two sides of the adjusting rod 6 are fixedly connected with auxiliary blocks 61, the auxiliary blocks 61 are slidingly located in the auxiliary groove 13, and the auxiliary groove 13 can limit the sliding of the auxiliary blocks 61, thereby further limiting the sliding of the adjusting rod 6. The adjusting rod 6 is integrally formed with a support rod 5 at one end extending out of the sliding groove 12, the side away from the adjusting rod 6 of the support rod 5 is provided with a guide hole 51, and the guide hole 51 is embedded with one end of the drill sleeve extending out of the auxiliary groove 13. The operator can move the adjusting rod 6 in the sliding groove 12 according to the scale on the adjusting rod 6, the movement of the adjusting rod 6 can drive the movement of the support rod 5, thereby adjusting the position of the guide hole 51, which is convenient for further limiting the position of the drill sleeve and the treatment of the patient.

[0036] As shown in the figure, Figure 3 The handle 1 is provided with a positioning member, the positioning member is a positioning bolt 14, the positioning bolt 14 is threadedly connected with the handle 1, and one end of the positioning bolt 14 abuts against the groove bottom of the sliding groove 12 and the adjusting rod 6. When the adjusting rod 6 drives the support rod 5 to move to a suitable position, the operator can rotate the positioning bolt 14 to exert a force on the adjusting rod 6 after the one end of the positioning bolt 14 passes through the groove bottom of the sliding groove 12, the adjusting rod 6 abuts against the positioning bolt 14, at this time, the auxiliary blocks 61 abut against the groove wall of the auxiliary groove 13, so that the auxiliary blocks 61 are positioned in the auxiliary groove 13, thereby positioning the adjusting rod 6 in the sliding groove 12, which is convenient for positioning the position of the support rod 5.

[0037] The implementation principle of the full-intra-cross ligament positioning device in the embodiment of the present application is as follows:

[0038] When the drill sleeve needs to be moved, the operator rotates the pressing block 2 to be attached to the handle 1, and rotates the positioning plate 31 into the positioning groove 21. According to the actual situation, the adjusting rod 6 is adjusted to be located in the sliding groove 12 by adjusting the scale on the adjusting rod 6, so as to adjust the position of the supporting rod 5. Then, the positioning bolt 14 is tightened to position the position of the supporting rod 5. Then, the handle 1 is moved to the appropriate position, and the drill sleeve is sequentially inserted through the guide groove 11 and the guide hole 51 to treat the patient.

[0039] Embodiment two:

[0040] As shown in Figure 4 the embodiment of the present application is based on the first embodiment. The pressing block 2 is rotatably connected with a limiting rod 22. The cross section of the limiting rod 22 is L-shaped. The limiting groove 311 is provided on the positioning plate 31 for the limiting rod 22 to be embedded. The pressing block 2 is provided with a control member, which is a second torsion spring 23 installed on the rotating shaft of the limiting rod 22. When the positioning plate 31 needs to be rotated into the positioning groove 21, the operator rotates the limiting rod 22 to provide a rotating space for the positioning rod. When the positioning plate 31 is rotated into the positioning groove 21, the operator can release the limiting rod 22. The limiting rod 22 can be rotated under the action of the second torsion spring 23, so that one end of the limiting rod 22 is embedded in the limiting groove 311. The limiting rod 22 can limit the positioning plate 31, reducing the possibility of the positioning plate 31 deviating in the positioning groove 21, thereby facilitating the positioning of the pressing block 2 by the positioning plate 31, and further improving the positioning stability of the pressing block 2.

[0041] The implementation principle of the full-intra-cross ligament positioning device of the embodiment of the present application is:

[0042] When the positioning plate 31 is rotated into the positioning groove 21, the operator rotates the limiting rod 22 into the limiting groove 311. At this time, the limiting rod 22 limits the positioning plate 31, thereby further limiting the pressing block 2, reducing the possibility of the pressing block 2 rotating, and facilitating the drill sleeve to pass through between the pressing block 2 and the handle 1.

[0043] The above are preferred embodiments of the present application, but do not limit the protection scope of the present application. Therefore, any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A fully internal cruciate ligament positioning device, characterized in that: The invention comprises a handle (1), wherein the handle (1) is provided with a guide groove (11), wherein the guide groove (11) is for inserting a drill sleeve, wherein a pressure block (2) is rotatably connected to the handle (1), wherein a positioning assembly (3) for controlling the positioning of the pressure block (2) is provided on the handle (1), wherein the drill sleeve is inserted between the handle (1) and the pressure block (2), wherein a stop assembly (4) for limiting the position of the drill sleeve is provided on the pressure block (2), wherein a support rod (5) is provided on the support rod (5), wherein a guide hole (51) is provided, wherein one end of the drill sleeve extending out of the guide groove (11) is inserted into the guide hole (51).

2. The fully internal cruciate ligament positioning device according to claim 1, characterized in that: The positioning assembly (3) comprises a positioning plate (31) and a positioning column (32); the positioning plate (31) and the handle (1) are rotatably connected; a positioning groove (21) is provided on the pressing block (2); the positioning groove (21) is for the positioning plate (31) to be embedded; and the positioning column (32) and the positioning plate (31) are fixedly connected.

3. The fully internal cruciate ligament positioning device according to claim 1, characterized in that: The anti-retraction assembly (4) comprises a clamping block (41) and a first torsion spring (42); the clamping block (41) and the pressure block (2) are rotatably connected; the clamping block (41) and the groove on the drill sleeve are matched; and the first torsion spring (42) is installed on the rotation axis of the clamping block (41).

4. The fully internal cruciate ligament positioning device according to claim 3, characterized in that: A control block (411) is fixedly connected to the card block (41).

5. The fully internal cruciate ligament positioning device according to claim 1, characterized in that: The handle (1) is provided with a sliding groove (12), the support rod (5) is fixedly connected with an adjusting rod (6), the adjusting rod (6) is located in the sliding groove (12) and slides, the groove wall of the sliding groove (12) is provided with an auxiliary groove (13), the adjusting rod (6) is fixedly connected with an auxiliary block (61), the auxiliary block (61) is located in the auxiliary groove (13) and slides, and the handle (1) is provided with a positioning member, the positioning member is used to position the adjusting rod (6) in the sliding groove (12).

6. The fully internal cruciate ligament positioning device according to claim 5, characterized in that: The positioning member is a positioning bolt (14), the positioning bolt (14) is threadedly connected to the handle (1), and the positioning bolt (14) passes through the bottom of the sliding groove (12) and abuts against the adjusting rod (6).

7. The fully internal cruciate ligament positioning device according to claim 2, characterized in that: The pressing block (2) is rotatably connected to a limiting rod (22), the positioning plate (31) is provided with a limiting groove (311), the limiting groove (311) is for the limiting rod (22) to be embedded, and the pressing block (2) is provided with a control member, the control member being used to control the rotation of the limiting rod (22).

8. The fully internal cruciate ligament positioning device according to claim 7, characterized in that: The control component is a second torsion spring (23), and the second torsion spring (23) is installed on the rotating shaft of the limiting rod (22).

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