Positioning, depth-setting and line-passing instrument for two angulated and communicated bone blind sidewalks

Abstract

The utility model discloses a positioning and depth-setting line passing instrument for two angled communicated bone blind sidewalks, which solves the problems that consumable-free fixation cannot be realized and line passing cannot be completed in angled communicated blind sidewalks in the existing tail line fixing mode, and comprises a tool main frame, a depth-setting opening, an angle fixer, a depth-setting hollow guide sleeve and an angle-setting hollow guide sleeve, the depth setting opening is formed in one end of the tool main frame, sliding ways are arranged on the two sides of the tool main frame, the angle fixator is in an inverted U shape, sliding grooves are formed in the two sides of the angle fixator, the angle fixator can slide on the tool main frame conveniently through matching of the sliding grooves and the sliding ways, and the angle setting opening is formed in the upper portion of the angle fixator. The depth-keeping hollow guide sleeve is installed in the depth-keeping opening, and the angle-keeping hollow guide sleeve is installed in the angle-keeping opening. According to the application principle and scene, suture auxiliary fixing is achieved, the depth and the position of a hole channel are defined, and muscle-bone healing is promoted.

Description

Technical Field

[0001] The utility model relates to the technical field of orthopedic surgical instruments, in particular to an instrument for positioning, determining the depth and passing a line between two bone blind passages that are connected at an angle. Background Art

[0002] At present, bone tunnel fixation is more common in orthopedics, especially in sports medicine. However, tail wire fixation cannot achieve fixation without consumables and the angled blind path cannot be completed through the wire. There are no ready-made tools on the market. Most of them are changed to rivets or interface screws for fixation, which are all disposable consumables, increase implants or use more instruments, are complicated to operate, and have high medical costs. They are not in line with the current national advocated DRG or DIP group payment trend. Utility Model Content

[0003] The utility model provides a device for positioning and determining the depth of two bone blind passages that are connected at an angle, so as to solve the technical problems that the existing tail wire fixing method cannot achieve fixation without consumables and the blind passages that are connected at an angle cannot be completed.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] The present application provides an instrument for positioning and determining the depth of two interlinked bone blind passages at an angle, which is characterized by comprising a tool main frame, a depth-determining opening, an angle fixer, a depth-determining hollow guide sleeve, and a fixed-angle hollow guide sleeve; wherein,

[0006] The fixed depth opening is arranged at one end of the tool main frame, and slideways are provided on both sides of the tool main frame. The angle fixer is in the shape of an inverted "U" shape, and slide grooves are provided on both sides. The slide grooves cooperate with the slideways to facilitate the sliding of the angle fixer on the tool main frame. The angle is adjusted by adjusting the position of the angle fixer on the tool main frame. A fixed angle opening is provided above the angle fixer; the fixed depth hollow guide sleeve is installed in the fixed depth opening, and the fixed angle hollow guide sleeve is installed in the fixed angle opening.

[0007] Furthermore, the tool main frame has an arc-shaped structure, including a fixed depth part and a fixed angle part, and the fixed depth opening is opened on the bottom surface of the fixed depth part; the bottom of the fixed angle part is a hollow structure, which is convenient for the angle fixer to drive the fixed angle hollow guide sleeve to slide on the fixed angle part, and the outer side of the slide groove is engraved with an angle, with the inner wall of the fixed depth opening close to the fixed angle opening being 0°.

[0008] Furthermore, a screw hole is provided on a sliding groove on one side of the angle holder. After the position of the angle holder is determined, the angle holder is fixed to the tool main frame by fixing the screws.

[0009] Furthermore, it also includes a depth-fixing component and a fixed-angle component. The depth-fixing component is arranged in a depth-fixing hollow guide sleeve, and the angle-fixing component is arranged in a fixed-angle hollow guide sleeve.

[0010] Furthermore, the depth-fixing assembly includes a first drill bit and a wire-holding assembly, and the outer diameter of the first drill bit and the wire-holding assembly is consistent with the inner diameter of the depth-fixing hollow guide sleeve; the angle-fixing assembly includes a second drill bit and a wire-pushing assembly, and the outer diameter of the second drill bit and the wire-pushing assembly is consistent with the inner diameter of the angle-fixing hollow guide sleeve.

[0011] Furthermore, the wire holding assembly includes a first hollow sleeve and a wire holding device, the wire holding device is arranged in the first hollow sleeve, and the outer diameter of the wire holding device is smaller than the inner diameter of the first hollow sleeve; the wire pushing assembly includes a second hollow sleeve and a wire pushing device, the wire pushing device is arranged in the second hollow sleeve, and the diameter of the Y-shaped wire pushing socket at the far end of the wire pushing device is slightly smaller than the inner diameter of the second hollow sleeve to facilitate wire pushing.

[0012] Furthermore, the wire clamp is a T-shaped wire clamp, which has a T-shaped handle at the proximal end and surface protrusions at the distal end to increase friction and contact area for the wire. The outer diameter of one end of the wire clamp with the surface protrusions is consistent with the inner diameter of the first hollow sleeve, so that the distal end protrusion of the wire clamp can clamp the wire into the gap with the first hollow sleeve.

[0013] Furthermore, the wire pusher is a Y-shaped wire pusher, with a T-shaped handle at the proximal end and a Y-shaped wire pushing socket at the distal end.

[0014] Furthermore, the first hollow sleeve has an elliptical hole with a side wall 3 mm away from the end point, and the side wall of the first hollow sleeve has a marking line along the opening direction of the elliptical hole; the fixed depth opening is provided with a marking line on the side close to the fixed angle opening, which cooperates with the marking line on the first hollow sleeve to guide the direction of the elliptical hole. The outer diameter of the second hollow sleeve is slightly smaller than the inner diameter of the first hollow sleeve, so that the wire clamp can push the wire into the elliptical hole at the far end of the second hollow sleeve.

[0015] Furthermore, a thread and a scale are provided on the outer wall of the depth-fixing hollow guide sleeve, wherein the thread occupies 4 / 5 of the circumference and the scale occupies 1 / 5 of the circumference, and the depth-fixing hollow guide sleeve is connected to the depth-fixing mouth through a threaded connection to fix the depth.

[0016] Furthermore, the slide groove has a structure that is narrow at the top and wide at the bottom, which makes it easy to clamp the angle fixer on the slide groove.

[0017] Beneficial effects achieved by this utility model:

[0018] (1) The present invention provides two angled and interconnected bone blind channel positioning and depth-fixing wire-passing devices. The application principle and scenario are both suture-assisted fixation and clear channel depth and position, which promotes muscle-bone healing. It can also be used as a wire-passing device alone to reduce operation time. Currently, there are many auxiliary fixation devices on the market, but they are all disposable consumables, increase implants, increase medical costs or prolong operation time.

[0019] (2) The two angled and interconnected bone blind channel positioning and depth-fixing devices provided by the present invention reduce the use of implants and surgical consumables, which is in line with the current national trend of DRG or DIP group payment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of the positioning and depth-fixing wire-passing device of the present invention;

[0021] Figure 2 This is a top view of the main frame of the utility model tool;

[0022] Figure 3 This is a schematic structural diagram of the angle fixer of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the depth-fixing component of the present invention;

[0024] Figure 5 This is a structural diagram of the fixed angle component of the utility model.

[0025] Reference numerals:

[0026] 1. Tool main frame; 11. Slide; 12. Depth-fixing part; 13. Angle-fixing part; 2. Depth-fixing opening; 3. Angle-fixing opening; 4. Angle fixer; 41. Fixing screw; 42. Slide; 5. Depth-fixing hollow guide sleeve; 6. Angle-fixing hollow guide sleeve; 7. Depth-fixing assembly; 71. First drill bit; 72. Wire clamping assembly; 721. First hollow sleeve; 722. Wire clamp; 723. Elliptical hole; 8. Angle-fixing assembly; 81. Second drill bit; 82. Wire pushing assembly; 821. Second hollow sleeve; 822. Wire pusher.

[0027] The accompanying drawings are for illustrative purposes only and should not be construed as limitations on this patent. To better illustrate this embodiment, some components of the accompanying drawings may be omitted, enlarged, or reduced in size and do not represent the actual dimensions of the product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted from the accompanying drawings. The same or similar reference numerals correspond to the same or similar components. The terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limitations on this patent. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0029] The technical solution of the present invention is described in detail below with reference to the accompanying drawings.

[0030] Example 1:

[0031] like Figure 1 and Figure 4 As shown, this embodiment includes a tool main frame 1, a depth-fixing opening 2, and a depth-fixing hollow guide sleeve 5; wherein, the depth-fixing opening 2 is arranged at one end of the tool main frame 1, and the depth-fixing hollow guide sleeve 5 is installed in the depth-fixing opening 2.

[0032] In a specific embodiment, the tool main frame 1 is an arc-shaped structure.

[0033] In a specific embodiment, a depth-fixing component 7 is further included, and the depth-fixing component 7 is disposed in the depth-fixing hollow guide sleeve 5 .

[0034] In a specific embodiment, the depth-fixing assembly 7 includes a first drill bit 71 and a wire-holding assembly 72 , and the outer diameters of the first drill bit 71 and the wire-holding assembly 72 are consistent with the inner diameter of the depth-fixing hollow guide sleeve 5 .

[0035] In a specific embodiment, the wire clamping assembly 72 includes a first hollow sleeve 721 and a wire clamp 722 . The wire clamp 722 is disposed in the first hollow sleeve 721 . The outer diameter of the wire clamp 722 is consistent with the inner diameter of the first hollow sleeve 721 .

[0036] In a specific embodiment, the wire holder 722 is a T-shaped wire holder, and the wire holder 722 has a T-shaped handle at the proximal end and surface bumps at the distal end to increase friction and the contact area of ​​the wire; the outer diameter of one end of the wire holder 722 with the bumps on the surface is consistent with the inner diameter of the first hollow sleeve 721, so that the bumps at the distal end of the wire holder 722 can clamp the wire into the gap with the first hollow sleeve 721.

[0037] In a specific embodiment, the first hollow sleeve 721 has an elliptical hole 723 with a side wall passing through it 3 mm away from the end point, and the side wall of the first hollow sleeve 721 has a marking line along the opening direction of the elliptical hole 723; a marking line is provided on one side of the fixed depth opening 2, which cooperates with the marking line on the first hollow sleeve 721 to guide the direction of the elliptical hole 723.

[0038] In a specific embodiment, the outer wall of the depth-fixing hollow guide sleeve 5 is provided with threads and scales, wherein the threads occupy 4 / 5 of the circumference and the scales occupy 1 / 5 of the circumference. The depth-fixing hollow guide sleeve 5 is connected to the depth-fixing mouth 2 through threads to fix the depth.

[0039] Example 2:

[0040] like Figure 1 and Figure 5 As shown, this embodiment includes a tool main frame 1, an angle fixer 4 and a fixed-angle hollow guide sleeve 6; slideways 11 are provided on both sides of the tool main frame 1, and the angle fixer 4 is in the shape of an inverted "U" shape, with slide grooves 42 on both sides. The slide grooves 42 cooperate with the slideways 11 to facilitate the sliding of the angle fixer 4 on the tool main frame 1. By adjusting the position of the angle fixer 4 on the tool main frame 1, the angle adjustment is achieved. A fixed-angle opening 3 is provided above the angle fixer 4; the fixed-angle hollow guide sleeve 6 is installed in the fixed-angle opening 3.

[0041] In a specific embodiment, the tool main frame 1 has an arc-shaped structure, including a fixed depth portion 12 and a fixed angle portion 13, and the fixed depth opening 2 is opened on the bottom surface of the fixed depth portion 12; the bottom of the fixed angle portion 13 is a hollow structure, which is convenient for the angle fixer 4 to drive the fixed angle hollow guide sleeve 6 to slide on the fixed angle portion 13, and the outer side of the slide groove 42 is engraved with an angle, with the inner wall of the fixed depth opening 2 close to the fixed angle opening 3 being 0°.

[0042] In a specific embodiment, a screw hole is provided on a side slide groove 42 of the angle fixer 4 . After the position of the angle fixer 4 is determined, the angle fixer 4 is fixed to the tool main frame 1 by fixing screws 41 .

[0043] In a specific embodiment, a fixed angle component 8 is further included, and the fixed angle component 8 is disposed in the fixed angle hollow guide sleeve 6 .

[0044] In a specific embodiment, the fixed angle assembly 8 includes a second drill bit 81 and a wire pushing assembly 82 , and the outer diameters of the second drill bit 81 and the wire pushing assembly 82 are consistent with the inner diameter of the fixed angle hollow guide sleeve 6 .

[0045] In a specific embodiment, the wire pushing assembly 82 includes a second hollow sleeve 821 and a wire pusher 822 , and the wire pusher 822 is disposed in the second hollow sleeve 821 .

[0046] In a specific embodiment, the wire pusher 822 is a Y-shaped wire pusher with a T-shaped handle at the proximal end and a Y-shaped wire pushing bayonet at the distal end. The diameter of the Y-shaped wire pushing bayonet at the distal end of the wire pusher 822 is slightly smaller than the inner diameter of the second hollow sleeve 821 to facilitate wire pushing.

[0047] Example 3:

[0048] like Figure 1-Figure 5 As shown, this embodiment includes a tool main frame 1, a fixed depth opening 2, an angle fixer 4, a fixed depth hollow guide sleeve 5 and a fixed angle hollow guide sleeve 6; wherein, the fixed depth opening 2 is arranged at one end of the tool main frame 1, and slideways 11 are provided on both sides of the tool main frame 1. The angle fixer 4 is in the shape of an inverted "U" shape, and slide grooves 42 are provided on both sides. The slide grooves 42 cooperate with the slideways 11 to facilitate the sliding of the angle fixer 4 on the tool main frame 1. By adjusting the position of the angle fixer 4 on the tool main frame 1, the angle adjustment is achieved. A fixed angle opening 3 is provided above the angle fixer 4; the fixed depth hollow guide sleeve 5 is installed in the fixed depth opening 2, and the fixed angle hollow guide sleeve 6 is installed in the fixed angle opening 3.

[0049] In a specific embodiment, the tool main frame 1 has an arc-shaped structure, including a fixed depth portion 12 and a fixed angle portion 13, and the fixed depth opening 2 is opened on the bottom surface of the fixed depth portion 12; the bottom of the fixed angle portion 13 is a hollow structure, which is convenient for the angle fixer 4 to drive the fixed angle hollow guide sleeve 6 to slide on the fixed angle portion 13, and the outer side of the slide groove 42 is engraved with an angle, with the inner wall of the fixed depth opening 2 close to the fixed angle opening 3 being 0°.

[0050] In a specific embodiment, a screw hole is provided on a side slide groove 42 of the angle fixer 4 . After the position of the angle fixer 4 is determined, the angle fixer 4 is fixed to the tool main frame 1 by fixing screws 41 .

[0051] In a specific embodiment, it further includes a depth-fixing component 7 and an angle-fixing component 8 . The depth-fixing component 7 is disposed in the depth-fixing hollow guide sleeve 5 , and the angle-fixing component 8 is disposed in the angle-fixing hollow guide sleeve 6 .

[0052] In a specific embodiment, the depth-fixing assembly 7 includes a first drill bit 71 and a wire-holding assembly 72, and the outer diameters of the first drill bit 71 and the wire-holding assembly 72 are consistent with the inner diameter of the depth-fixing hollow guide sleeve 5; the angle-fixing assembly 8 includes a second drill bit 81 and a wire-pushing assembly 82, and the outer diameters of the second drill bit 81 and the wire-pushing assembly 82 are consistent with the inner diameter of the angle-fixing hollow guide sleeve 6.

[0053] In a specific embodiment, the wire holding assembly 72 includes a first hollow sleeve 721 and a wire holding device 722, and the wire holding device 722 is arranged in the first hollow sleeve 721, and the outer diameter of the wire holding device 722 is smaller than the inner diameter of the first hollow sleeve 721; the wire pushing assembly 82 includes a second hollow sleeve 821 and a wire pushing device 822, and the wire pushing device 822 is arranged in the second hollow sleeve 821, and the diameter of the Y-shaped wire pushing socket at the distal end of the wire pushing device 822 is slightly smaller than the inner diameter of the second hollow sleeve 821, so as to facilitate wire pushing.

[0054] In a specific embodiment, the wire holder 722 is a T-shaped wire holder, and the wire holder 722 has a T-shaped handle at the proximal end and surface bumps at the distal end to increase friction and the contact area of ​​the wire. The outer diameter of one end of the wire holder 722 with the surface bumps is consistent with the inner diameter of the first hollow sleeve 721, so that the distal bumps of the wire holder 722 can clamp the wire into the gap with the first hollow sleeve 721; the wire pusher 822 is a Y-shaped wire pusher, and the wire pusher 822 has a T-shaped handle at the proximal end and a Y-shaped wire pushing socket at the end.

[0055] In a specific embodiment, the first hollow sleeve 721 has an elliptical hole 723 extending through the sidewall 3 mm from the endpoint. The sidewall of the first hollow sleeve 721 has markings along the direction of the opening of the elliptical hole 723. The depth-fixing opening 2 has markings on one side near the angle-fixing opening 3, which cooperate with the markings on the first hollow sleeve 721 to guide the direction of the elliptical hole 723. The outer diameter of the second hollow sleeve 821 is slightly smaller than the inner diameter of the first hollow sleeve 721 to facilitate the wire gripper 722 in pushing the wire into the elliptical hole 723 at the distal end of the second hollow sleeve 821.

[0056] In a specific embodiment, the outer wall of the depth-fixing hollow guide sleeve 5 is provided with threads and scales, wherein the threads occupy 4 / 5 of the circumference and the scales occupy 1 / 5 of the circumference. The depth-fixing hollow guide sleeve 5 is connected to the depth-fixing mouth 2 through threads to fix the depth.

[0057] In a specific embodiment, the slide groove 42 is a structure that is narrow at the top and wide at the bottom, which facilitates the angle fixer 4 to be clamped on the slide groove 42 .

[0058] The following is a detailed description of the assembly method of the two aforementioned angled bone blind channel positioning, depth determination and wire-passing instruments:

[0059] First, determine the two entrances to the bone blind tunnel, determine the depth of the bone tunnel and fix the depth-fixing hollow guide sleeve 5, then tighten the fixing screw 41 of the angle fixer 4 according to the predetermined angle, knock the angle-fixing hollow guide sleeve 6 and fix it (determine the depth first and then the angle), use the first drill bit 71 and the second drill bit 81 to obtain the tunnel respectively, replace the first hollow sleeve 721 and the second hollow sleeve 821, push the distal end of the handheld wire pusher 822 with the wire to the blind end of the bone tunnel of the second hollow sleeve 821, then withdraw the handheld wire pusher 822 a little, insert the handheld wire clamping tool 722 into the first hollow sleeve 721 to complete the clamping, and remove all instruments to complete the wire passing.

[0060] Subsequent operations can be performed as needed during the operation to complete the tendon into the bone tunnel and suture fixation to achieve long-term tendon and bone healing or simple suture fixation to maintain tension.

[0061] The serial numbers of the embodiments of this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are only preferred embodiments of this application and do not limit the scope of the patent of this application. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the scope of patent protection of this application.

Claims

1. A device for positioning and determining the depth of two bone blind passages connected at an angle, characterized in that: It comprises a tool main frame (1), a depth-fixing opening (2), an angle fixer (4), a depth-fixing hollow guide sleeve (5) and an angle-fixing hollow guide sleeve (6); wherein: The depth-fixing opening (2) is arranged at one end of the tool main frame (1), and slideways (11) are arranged on both sides of the tool main frame (1). The angle fixer (4) is in the shape of an inverted "U" shape, and slideways (42) are arranged on both sides. The slideways (42) cooperate with the slideways (11) to facilitate the sliding of the angle fixer (4) on the tool main frame (1). The angle is adjusted by adjusting the position of the angle fixer (4) on the tool main frame (1). A fixed angle opening (3) is arranged above the angle fixer (4); the depth-fixing hollow guide sleeve (5) is installed in the depth-fixing opening (2), and the angle-fixing hollow guide sleeve (6) is installed in the angle-fixing opening (3).

2. The device for positioning and determining the depth of two bone blind passages connected at an angle according to claim 1, characterized in that: The tool main frame (1) is an arc-shaped structure, comprising a depth-fixing portion (12) and an angle-fixing portion (13); the depth-fixing opening (2) is arranged on the bottom surface of the depth-fixing portion (12); the bottom of the angle-fixing portion (13) is a hollow structure, which facilitates the angle fixer (4) to drive the angle-fixing hollow guide sleeve (6) to slide on the angle-fixing portion (13); an angle is engraved on the outer side of the slide groove (42), and the inner wall of the depth-fixing opening (2) close to the angle-fixing opening (3) is 0°.

3. The device for positioning and determining the depth of two bone blind passages connected at an angle according to claim 1, characterized in that: A screw hole is provided on a side slide groove (42) of the angle fixer (4). After the position of the angle fixer (4) is determined, the angle fixer (4) is fixed to the tool main frame (1) by means of a fixing screw (41).

4. The device for positioning and determining the depth of two bone blind passages connected at an angle according to claim 1, characterized in that: It also comprises a depth-fixing component (7) and an angle-fixing component (8), wherein the depth-fixing component (7) is arranged in a depth-fixing hollow guide sleeve (5), and the angle-fixing component (8) is arranged in a angle-fixing hollow guide sleeve (6).

5. The device for positioning and determining the depth of two bone blind passages connected at an angle according to claim 4, characterized in that: The depth-fixing assembly (7) comprises a first drill bit (71) and a wire-holding assembly (72), and the outer diameters of the first drill bit (71) and the wire-holding assembly (72) are consistent with the inner diameter of the depth-fixing hollow guide sleeve (5); the angle-fixing assembly (8) comprises a second drill bit (81) and a wire-pushing assembly (82), and the outer diameters of the second drill bit (81) and the wire-pushing assembly (82) are consistent with the inner diameter of the angle-fixing hollow guide sleeve (6).

6. The device for positioning and determining the depth of two bone blind passages connected at an angle according to claim 5, characterized in that: The wire holding assembly (72) comprises a first hollow sleeve (721) and a wire holding device (722), wherein the wire holding device (722) is arranged in the first hollow sleeve (721), and the outer diameter of the wire holding device (722) is smaller than the inner diameter of the first hollow sleeve (721); the wire pushing assembly (82) comprises a second hollow sleeve (821) and a wire pushing device (822), wherein the wire pushing device (822) is arranged in the second hollow sleeve (821).

7. The device for positioning and determining the depth of two bone blind passages connected at an angle according to claim 6, characterized in that: The wire gripper (722) is a T-shaped wire gripper, with a T-shaped handle at the proximal end and a surface protrusion at the distal end to increase friction and wire contact area; the wire pusher (822) is a Y-shaped wire pusher, with a T-shaped handle at the proximal end and a Y-shaped wire pusher socket at the distal end.

8. The device for positioning and determining the depth of two bone blind passages connected at an angle according to claim 6, characterized in that: The first hollow sleeve (721) is provided with an elliptical hole (723) with a side wall passing through it at a position 3 mm from the end point, and the side wall of the first hollow sleeve (721) is provided with a marking line along the opening direction of the elliptical hole (723); a marking line is provided on one side of the fixed depth opening (2) close to the fixed angle opening (3), and cooperates with the marking line on the first hollow sleeve (721) to guide the direction of the elliptical hole (723).

9. The device for positioning and determining the depth of two bone blind passages connected at an angle according to claim 1, characterized in that: The outer wall of the depth-fixing hollow guide sleeve (5) is provided with threads and scales, wherein the threads account for 4 / 5 of the circumference and the scales account for 1 / 5 of the circumference. The depth-fixing hollow guide sleeve (5) is connected to the depth-fixing opening (2) via threads to fix the depth.

10. The device for positioning and determining the depth of two bone blind passages connected at an angle according to claim 1, characterized in that: The slide groove (42) is a structure that is narrow at the top and wide at the bottom, making it easy to clamp the angle fixer (4) on the slide groove (42).

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