Anti-disengagement orthopedic anchor

Abstract

The invention belongs to the technical field of orthopedic anchors and discloses an anti-disengagement orthopedic anchor which comprises a guide rod, a first threaded rod and a connecting rod, the guide rod is slidably connected with a striking rod, the connecting rod is slidably connected with a second operating rod, the first threaded rod is provided with an anti-disengagement assembly, the anti-disengagement assembly comprises a second threaded rod, and one end of the second threaded rod is slidably connected with a first operating rod. The other end of the second threaded rod is provided with a sliding groove, the sliding groove is slidably connected with a sliding block, the sliding block is fixedly connected with a sliding rod, the sliding rod is rotationally connected with a plurality of second movable rods, the second threaded rod is rotationally connected with a plurality of first movable rods, and the connecting rod is fixedly connected with a first limiting ring and a second limiting ring. The orthopedic anchor solves the problems that an existing orthopedic anchor is fixed to the bone only through threads, the connecting stability and strength are low, and the orthopedic anchor is prone to falling off and slipping out of the bone, so that the surgical treatment effect is affected to a certain degree.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of orthopedic anchor nails, in particular to an anti-falling-out orthopedic anchor nail. BACKGROUND

[0002] The orthopedic anchor nail is a special fastening device in the medical field, which is mainly used in orthopedic surgery to help repair or stabilize the bone structure, and is very common in arthroscopic surgery, fracture repair, ligament reconstruction and the like.

[0003] In the fracture repair surgery, the anchor nail is usually fixed in the bone, then the suture is fixed and connected through the anchor nail, and then the torn fracture block or the broken ligament is sutured and fixed to the bone surface through the suture.

[0004] However, the suture anchor nail used for suture connection in the prior art only relies on thread connection with the bone, which results in insufficient connection strength, especially for elderly osteoporosis patients, and is prone to falling out and sliding out, thereby affecting the treatment effect of the surgery. SUMMARY

[0005] The application aims to provide an anti-falling-out orthopedic anchor nail to solve the problem that the existing orthopedic anchor nail only relies on thread fixation with the bone, the stability and strength of the connection are low, the anchor nail is prone to falling out and sliding out of the bone, and the treatment effect of the surgery is affected to a certain extent.

[0006] In order to achieve the above-mentioned purpose, the application provides the following technical scheme:

[0007] The basic technical scheme provided by the application is an anti-falling-out orthopedic anchor nail, which comprises a guide rod, a threaded rod one and a connecting rod, the guide rod is rotationally connected with the threaded rod one, the connecting rod is fixedly connected with the threaded rod one, the guide rod is slidably connected with a striking rod, the connecting rod is slidably connected with an operating rod two, the striking rod is slidably connected with the operating rod two, and the threaded rod one is provided with an anti-falling-out assembly; the anti-falling-out assembly comprises a threaded rod two, the threaded rod two is sleeved on the connecting rod, one end of the threaded rod two is slidably connected with an operating rod one, the other end of the threaded rod two is provided with a sliding groove, the sliding groove is slidably connected with a sliding block, the sliding block is fixedly connected with a sliding rod, the sliding rod is sleeved on the connecting rod, the sliding rod is rotationally connected with a plurality of groups of movable rods two, the threaded rod two is rotationally connected with a plurality of groups of movable rods one, the movable rods one are rotationally connected with the movable rods two, the connecting rod is fixedly connected with a limiting ring one and a limiting ring two, the limiting ring one is used for limiting the limit position of the contraction of the anti-falling-out assembly, and the limiting ring two is used for limiting the limit position of the expansion of the anti-falling-out assembly.

[0008] The principle of the basic technical solution is that the striking rod is struck, the tip part and the guide rod are threaded rod one, the threaded rod one is rotated by operating rod two until the anti-dropping assembly reaches the bone cavity, at this time the operating rod two is fixed, the operating rod one is rotated to drive the threaded rod two to rotate, the threaded rod two moves forward to rotate into the bone and drives the sliding rod to move forward, the sliding rod controls the movable rod one and the movable rod two to rotate outward along the connection points of the sliding rod and the threaded rod one respectively until the sliding block contacts the limiting ring two, the threaded rod one cannot move forward relative to the threaded rod one, at this time the area of the circle formed by the connection points of each movable rod one and movable rod two is much larger than the area of the cross section of the threaded rod one, thereby controlling the anti-dropping assembly to be clamped in the inner wall of the bone.

[0009] The beneficial effect of the basic technical solution is that the larger area buckle formed by the movable rod one and the movable rod two of the anti-dropping assembly is clamped in the inner wall of the bone, when the device is pulled outwards, the buckle formed by the movable rod one and the movable rod two is firmly clamped in the inner wall of the bone, thereby preventing the device from being separated from the bone of the patient, thereby greatly improving the stability of the anchor, solving the problem that the existing orthopedic anchor and bone only rely on threaded fixing, the stability and strength of the connection are low, and it is easy to fall out of the bone, thereby affecting the treatment effect of the operation.

[0010] Preferably, the operating rod one is fixedly connected with a handle one, the handle one is sleeved on the operating rod two, and the operating rod two is fixedly connected with a handle two.

[0011] Preferably, the surfaces of the handle one and the handle two are provided with convex edges.

[0012] Through the above setting, the grip and operability of the operating rod one and the operating rod two are enhanced through the design of the handle one and the handle two, thereby providing convenience for the staff, and the design of the convex edges further improves the friction of the handle, which is beneficial to use.

[0013] Preferably, the guide rod and the striking rod are both provided with a wire hole, and the wire hole is provided with a suture.

[0014] Through the above setting, the existing anchor is usually connected with a suture at the tail (corresponding to the tail of the threaded rod two of the device), and this connection method has a problem, that is, for absorbable anchors, it cannot be guaranteed which part is absorbed first, if the tail is absorbed first, there is a risk of suture falling off, therefore the suture passes through each component in turn until the front end of the anchor, greatly reducing the risk of suture falling off, thereby improving the treatment effect of the operation.

[0015] The sliding rod and the movable rod two, the threaded rod two and the movable rod one, and the movable rod one and the movable rod two are connected through the folding piece.

[0016] With the above configuration, the folding plate is easy to fold. By replacing the pivot between the components with the folding plate, the volume of the component can be effectively reduced, thereby improving the smoothness of the device entering the patient's bone, resulting in higher reliability and ease of use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an orthopedic anchor for preventing dislodgement according to the present invention. Figure One ;

[0018] Figure 2 This is an exploded view of an orthopedic anchor for preventing dislodgement according to the present invention;

[0019] Figure 3 for Figure 2 Enlarged view of point B in the middle;

[0020] Figure 4 This is a schematic diagram of the structure of an orthopedic anchor for preventing dislodgement according to the present invention. Figure Two ;

[0021] Figure 5 This is a schematic diagram of the structure of an orthopedic anchor for preventing dislodgement according to the present invention. Figure Three ;

[0022] Figure 6 for Figure 5 Sectional view at point AA;

[0023] Figure 7 for Figure 6 Enlarged view of point C in the middle;

[0024] Figure 8 This is a schematic diagram of the structure of a component of an orthopedic anchor for preventing dislodgement according to the present invention;

[0025] Figure 9 for Figure 8 Enlarged view at point D;

[0026] 1. Guide rod; 2. Threaded rod one; 3. Connecting rod; 4. Anti-detachment component; 401. Movable rod one; 402. Movable rod two; 403. Limiting ring one; 404. Limiting ring two; 405. Folding piece; 5. Sliding rod; 501. Sliding block; 6. Threaded rod two; 601. Slide groove; 7. Operating rod one; 8. Handle one; 9. Operating rod two; 10. Handle two; 11. Tip; 12. Thread hole; 13. Striking rod; 14. Mounting slot one; 15. Mounting block one; 16. Mounting slot two; 17. Mounting block two; 18. Sewing thread. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0028] like Figures 1 to 9As shown, an anti-disengagement orthopedic anchor includes a guide rod 1, a threaded rod one 2 and a connecting rod 3, the guide rod 1 is rotatably connected with the threaded rod one 2, the connecting rod 3 is fixedly connected with the threaded rod one 2, the guide rod 1 is slidably connected with a striking rod 13, the connecting rod 3 is slidably connected with an operating rod two 9 through a mounting groove two 16 and a mounting block two 17, the front end of the guide rod 1 is provided with a pointed end 11, the guide rod 1 and the striking rod 13 are both provided with a wire hole 12, the wire hole 12 is provided with a suture 18, the operating rod two 9 is fixedly connected with a handle two 10, the threaded rod one 2 is provided with an anti-disengagement assembly 4; the anti-disengagement assembly 4 includes a threaded rod two 6, the threaded rod two 6 is sleeved on the connecting rod 3, one end of the threaded rod two 6 is slidably connected with an operating rod one 7 through a mounting groove one 14 and a mounting block one 15, the operating rod one 7 is fixedly connected with a handle one 8, the handle one 8 is sleeved on the operating rod two 9, the surfaces of the handle one 8 and the handle two 10 are both provided with a convex rib, the other end of the threaded rod two 6 is provided with a sliding groove 601, the sliding groove 601 is slidably connected with a sliding block 501, the sliding block 501 is fixedly connected with a sliding rod 5, the sliding rod 5 is sleeved on the connecting rod 3, the sliding rod 5 is rotatably connected with a plurality of groups of movable rods two 402 through folding pieces 405, the threaded rod two 6 is rotatably connected with a plurality of groups of movable rods one 401 through the folding pieces 405, the movable rods one 401 and the movable rods two 402 are rotatably connected through the folding pieces 405, the connecting rod 3 is fixedly connected with a limiting ring one 403 and a limiting ring two 404, the limiting ring one 403 is used for limiting the limit position of the contraction of the anti-disengagement assembly 4, and the limiting ring two 404 is used for limiting the limit position of the expansion of the anti-disengagement assembly 4.

[0029] When using the anchor, the pointed end 11 is attached to the bone, the operating rod two 9 is inserted into the handle one 8 and the operating rod one 7, then the mounting block one 15 is slid into the mounting groove one 14, the mounting block two 17 is slid into the mounting groove two 16, and the striking rod 13 is sequentially slid into the guide rod 1 through the handle two 10, the operating rod two 9, the connecting rod 3, the threaded rod one 2, and finally the guide rod 1; the striking rod 13 is hammered, the impact force is transmitted to the pointed end 11 through the guide rod 1, and the pointed end 11 opens a path for the threaded rod one 2; after the front end of the threaded rod one 2 enters the bone, the operating rod two 9 is rotated through the handle two 10, thereby driving the threaded rod one 2 to rotate, and further making the threaded rod one 2 screw forward; in this process, the striking rod 13 needs to be manually fixed so as not to rotate, so that the guide rod 1 does not rotate with the threaded rod one 2, thereby preventing the problem of excessive friction between the suture and the bone caused by frequent rotation of the guide rod 1, thereby causing the suture 18 to break, and improving the reliability of the device; after the threaded rod one 2 completely penetrates the bone, the handle two 10 is pushed to make the threaded rod two 6 reach the bone; then the handle one 8 is rotated to drive the threaded rod two 6 to rotate, making the threaded rod two 6 screw forward, thereby driving the movable rods two 402 to move, so that they are expanded until the limiting ring two 404 contacts the sliding rod 5, at which time it is in a fully expanded state, like Figure 4As shown, finally pull out the handle 8 and handle 10 two 7, 9 and operating lever two operating lever two 9 and striker 13, pull out the suture 18, the movable rod two 402 and movable rod one 401 will be firmly stuck in the bone wall, good stability, high reliability.

[0030] When the anchor needs to be removed, first install the handle 8 and handle 10 two in the corresponding position, through the handle 10 rotating operating lever two 9, thereby driving the threaded rod 2 rotation, and then make the threaded rod 2 spiral forward, make the threaded rod 2 away from the slide bar 5, thereby controlling the movable rod one 401 and movable rod two 402 inward shrink, when the movable rod one 401 and the limit ring one 403 contact, the inner angle of the connecting rod 3 one and the connecting rod 3 two is less than 180° at this time, thereby improving the stability and reliability of the movement of both; again rotating the handle 8 to drive the threaded rod two 6 rotation, make the threaded rod two 6 spiral backward until it completely out of the bone; again through the handle 10 rotating threaded rod 2 rotation, and then make the threaded rod 2 spiral backward, and then make the anchor completely out of the bone.

[0031] The above is only the embodiment of the present application, the specific technical solutions or characteristics of the scheme known in the art are not described in detail. It should be noted that for those skilled in the art, without departing from the technical scheme of the present application, a number of deformation and improvement can be made, which should be regarded as the protection scope of the present application, these will not affect the effect and practicality of the patent. The protection scope of the present application should be subject to the content of its claims, the specific implementation mode and other records in the specification can be used to explain the content of the claims.

Claims

1. An orthopedic anchor for preventing dislodgement, characterized in that: Including guide rod (1), threaded rod one (2) and connecting rod (3), the guide rod (1) is rotatably connected with the threaded rod one (2), the connecting rod (3) is fixedly connected with the threaded rod one (2), the guide rod (1) is slidably connected with the striking rod (13), the connecting rod (3) is slidably connected with the operating rod two (9), the striking rod (13) is slidably connected with the operating rod two (9), the threaded rod one (2) is provided with anti-off assembly (4); The anti-off assembly (4) includes threaded rod two (6), the threaded rod two (6) is sleeved on the connecting rod (3), one end of the threaded rod two (6) is slidably connected with the operating rod one (7), the other end of the threaded rod two (6) is provided with a sliding slot (601), the sliding slot (601) is slidably connected with a sliding block (501), the sliding block (501) is fixedly connected with a sliding rod (5), the sliding rod (5) is sleeved on the connecting rod (3), the sliding rod (5) is rotatably connected with a plurality of groups of movable rods two (402), the threaded rod two (6) is rotatably connected with a plurality of groups of movable rods one (401), the movable rod one (401) is rotatably connected with the movable rod two (402), the connecting rod (3) is fixedly connected with a limit ring one (403) and a limit ring two (404), the limit ring one (403) is used for limiting the limit position of the anti-off assembly (4) contraction, the limit ring two (404) is used for limiting the limit position of the anti-off assembly (4) expansion.

2. The anti-backout orthopedic anchor of claim 1, wherein: The connecting rod (3) is provided with a mounting groove two (16), the operating rod two (9) is fixedly connected with a mounting block two (17), and the mounting block two (17) is slidably connected with the mounting groove two (16); the threaded rod two (6) is provided with a mounting groove one (14), the operating rod one (7) is fixedly connected with a mounting block one (15), and the mounting block one (15) is slidably connected with the mounting groove one (14).

3. The anti-backout orthopedic anchor of claim 1, wherein: The operating rod one (7) is fixedly connected with a handle one (8), the handle one (8) is sleeved on the operating rod two (9), and the operating rod two (9) is fixedly connected with a handle two (10).

4. The anti-backout orthopedic anchor of claim 3, wherein: The surfaces of the handle one (8) and the handle two (10) are both provided with convex edges.

5. The anti-backout orthopedic anchor of claim 3, wherein: The front end of the guide rod (1) is provided with a pointed end (11).

6. The anti-backout orthopedic anchor of claim 5, wherein: The guide rod (1) and the striking rod (13) are both provided with wire holes (12), and the wire holes (12) are provided with sutures (18).

7. The anti-backout orthopedic anchor of claim 1, wherein: The sliding rod (5) and the movable rod two (402), the threaded rod two (6) and the movable rod one (401), and the movable rod one (401) and the movable rod two (402) are rotatably connected through folding pieces (405).

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