Hollow drainage type screw structure

Abstract

The utility model relates to medical equipment technical field discloses a hollow drainage type screw structure, including screw body, the top of screw body is provided with the connector, and the top of connector is fixed with fixed head, the inside of screw body and connector and fixed head is penetrated and is provided with hollow cavity respectively, the outside of fixed head is provided with tail cap, the bottom of connector is fixed with the plug -in block. This hollow drainage type screw structure uses, respectively in the reserved hole of screw body both sides top inside, after the connecting bolt is correspondingly spun out from the inside connecting hole of plug -in block both sides, can separate from the top of screw body to the connector, can set up in the split body mode, when the hollow drainage type screw structure uses, if the fixed head top inside twist groove deformation slips after silk, can carry out separate disassembly replacement to screw structure upper part, solve the problem that inconveniently disassembles and replaces hollow screw structure.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a hollow drainage type screw structure. Background Technology

[0002] Hollow drainage screws are special fasteners with hollow channels, primarily used in the medical field to achieve both fixation and drainage functions. While securing the bone, the hollow screw allows for the drainage of body fluids or the delivery of medications through its internal channels. They are suitable for procedures such as lumbar fusion surgery, providing stable fixation and reducing postoperative complications.

[0003] However, in actual use, the hollow drainage screw structure is generally a one-piece structure. During surgical insertion, the screw may become stripped and damaged due to deformation caused by twisting, resulting in the entire screw being scrapped. The replacement cost is high, and there is no way to disassemble and replace the hollow screw structure.

[0004] Now, a novel hollow drainage screw structure is proposed to address the above-mentioned shortcomings. Utility Model Content

[0005] The purpose of this utility model is to provide a hollow drainage type screw structure to solve the problem mentioned in the background art that it is inconvenient to disassemble and replace the hollow screw structure.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hollow drainage type screw structure, comprising a screw body, a connector head at the top of the screw body, and a fixing head fixed at the top of the connector head; hollow cavities are respectively provided inside the screw body, the connector head, and the fixing head; a tail cap is provided on the outer side of the fixing head; an insert block is fixed at the bottom of the connector head; a slot is provided inside the top of the screw body; pre-drilled holes are respectively provided inside the tops of both sides of the screw body, and connecting bolts are provided inside the pre-drilled holes; connecting holes are respectively provided inside the sides of the insert block; and a through hole is provided inside the insert block.

[0007] As a further technical solution of this utility model, the reserved hole penetrates the interior of the screw body, and the connecting bolt penetrates the interior of the reserved hole and is threaded into the connecting hole.

[0008] As a further technical solution of this utility model, the through hole penetrates the interior of the insert block and communicates with the interior of the hollow cavity.

[0009] As a further technical solution of this utility model, a connecting groove is provided on the outer side of the tail cap, and a top cover is provided on the top of the tail cap.

[0010] As a further technical solution of this utility model, the inside of the connecting groove is provided with an external thread, and the inside of the top cover is provided with an internal thread that mates with the external thread. The top cover is rotatably connected in the connecting groove.

[0011] As a further technical solution of this utility model, a plurality of guide holes are respectively opened inside both ends of the screw body, and a horizontal bar is fixed inside the guide hole, and a vertical bar is fixed at the front end of the horizontal bar.

[0012] As a further technical solution of this utility model, the top and bottom ends of the vertical strip are fixedly connected to the top and bottom ends inside the guide hole, respectively.

[0013] As a further technical solution of this utility model, the inner part of the tail cap is rotatably connected to a connecting seat, the bottom end of the screw body is provided with a first threaded part, the top end of the screw body is provided with a second threaded part, and the inner parts of both ends of the tail cap are respectively provided with openings.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the hollow drainage type screw structure not only makes it easy to disassemble and replace the hollow screw structure and makes it easy to seal and prevent loosening of the top component of the screw, but also makes it convenient to drain and prevent blockage inside the hollow screw. The hollow drainage screw structure, which includes a screw body, connector, fixing head, slot, reserved hole, connecting bolt, connecting hole, through hole, and insert, can be used by unscrewing the connecting bolt outward from the corresponding connecting hole on both sides of the insert in the reserved hole at the top of the screw body. The connector can then be separated from the top of the screw body. It can be set up in a split manner. When using the hollow drainage screw structure, if the screw head is deformed and stripped due to the internal screw groove at the top of the fixing head, the upper part of the screw structure can be disassembled and replaced separately. With a tail cap, connecting groove and top cover, the screw structure is used by screwing the connecting seat down into the inside of the tail cap and tightening it. Then, the top cover can be screwed down into the outside of the connecting groove at the top of the tail cap. The top cover can be used to help close the top of the tail cap and help prevent the connecting seat from loosening. The hollow drainage screw structure, which includes a screw body, a guide hole, horizontal bars, and vertical bars, has a guide hole inside both ends of the screw body. During auxiliary drainage, the guide hole is fixed inside the guide hole. The horizontal bars and vertical bars help to seal the inside of the guide hole, preventing foreign objects from getting stuck inside and causing internal blockage. Attached Figure Description

[0015] Figure 1 This is a frontal cross-sectional view of the present invention. Figure 2This is a top view of the tail cap structure of this utility model; Figure 3 This is a top view of the top cover structure of this utility model; Figure 4 This is a partial cross-sectional view of the screw body of this utility model.

[0016] In the diagram: 1. Screw body; 2. First threaded part; 3. Second threaded part; 4. Connector; 5. Fixing head; 6. Tail cap; 7. Connecting groove; 8. Connecting seat; 9. Top cover; 10. Opening; 11. Slot; 12. Guide hole; 13. Horizontal bar; 14. Vertical bar; 15. Hollow cavity; 16. Reserved hole; 17. Connecting bolt; 18. Connecting hole; 19. Through hole; 20. Insert block. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4 This utility model provides an embodiment: a hollow drainage type screw structure, including a screw body 1, a connector 4 is provided at the top of the screw body 1, and a fixing head 5 is fixed at the top of the connector 4. Hollow cavities 15 are respectively provided through the interior of the screw body 1, the connector 4 and the fixing head 5. A tail cap 6 is provided on the outside of the fixing head 5. An insert block 20 is fixed at the bottom of the connector 4. A slot 11 is provided inside the top of the screw body 1. A reserved hole 16 is provided inside the top of both sides of the screw body 1, and a connecting bolt 17 is provided inside the reserved hole 16. A connecting hole 18 is provided inside the two sides of the insert block 20, and a through hole 19 is provided inside the insert block 20. The reserved hole 16 penetrates the interior of the screw body 1, the connecting bolt 17 penetrates the interior of the reserved hole 16 and is threaded into the connecting hole 18, and the through hole 19 penetrates the interior of the insert block 20 and communicates with the interior of the hollow cavity 15. Specifically, such as Figure 1 and Figure 4 As shown, after the connecting bolts 17 are screwed outward from the corresponding connecting holes 18 on both sides of the insert block 20 in the reserved holes 16 inside the top of the screw body 1 on both sides, the connector 4 can be separated from the top of the screw body 1. It can be set up separately. When using the hollow drainage type screw structure, if the screw groove inside the top of the fixing head 5 is deformed and stripped, the upper part of the screw structure can be disassembled and replaced separately.

[0019] The outer side of the tail cap 6 is provided with a connecting groove 7, and the top of the tail cap 6 is provided with a top cover 9. The connecting groove 7 is provided with an external thread, and the top cover 9 is provided with an internal thread that matches the external thread. The top cover 9 is rotatably connected in the connecting groove 7. Specifically, such as Figures 1-3 As shown, after screwing the connecting seat 8 downwards into the inside of the tail cap 6 and tightening it, the top cover 9 can be screwed downwards into the outside of the connecting groove 7 at the top position of the tail cap 6. The top cover 9 can be used to help seal the top of the tail cap 6 and help prevent the connecting seat 8 from loosening.

[0020] Several guide holes 12 are respectively opened inside both ends of the screw body 1. A horizontal bar 13 is fixed inside the guide hole 12, and a vertical bar 14 is fixed at the front end of the horizontal bar 13. The top and bottom ends of the vertical bar 14 are fixedly connected to the top and bottom ends inside the guide hole 12, respectively. Specifically, such as Figure 1 As shown, by fixing a horizontal bar 13 and a vertical bar 14 inside the guide hole 12, the inside of the guide hole 12 can be sealed by the horizontal bar 13 and the vertical bar 14 to prevent foreign objects from getting stuck inside the guide hole 12.

[0021] The end cap 6 is rotatably connected to a connecting seat 8. The bottom of the screw body 1 is provided with a first threaded part 2, and the top of the screw body 1 is provided with a second threaded part 3. The two ends of the end cap 6 are respectively provided with openings 10.

[0022] Working principle: When using this utility model, after screwing the connecting seat 8 downwards into the inside of the tail cap 6 and tightening it, the top cover 9 can be screwed downwards into the outside of the connecting groove 7 at the top position of the tail cap 6. The top cover 9 can be used to assist in sealing the top of the tail cap 6 and assist in preventing the connecting seat 8 from loosening. At the same time, in the hollow drainage type screw structure, the drainage holes 12 opened inside both ends of the screw body 1, during the auxiliary drainage process, can be further sealed by fixing horizontal bars 13 and vertical bars 14 inside the drainage holes 12, preventing foreign objects from getting stuck inside the drainage holes 12. Furthermore, when using the hollow drainage type screw structure, the connecting bolts 17 are screwed outward from the corresponding connecting holes 18 on both sides of the insert block 20 through the reserved holes 16 inside the top of the screw body 1 on both sides. The connector 4 can then be separated from the top of the screw body 1. It can be set up separately. When using the hollow drainage type screw structure, if the screw groove inside the top of the fixing head 5 is deformed and stripped, the upper part of the screw structure can be disassembled and replaced separately.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A hollow drainage type screw structure, comprising a screw body (1), characterized in that: The screw body (1) has a connector (4) at its top end, and a fixing head (5) is fixed at the top end of the connector (4). Hollow cavities (15) are respectively provided inside the screw body (1), connector (4) and fixing head (5). A tail cap (6) is provided on the outside of the fixing head (5). A plug (20) is fixed at the bottom end of the connector (4). A slot (11) is provided inside the top end of the screw body (1). Reserved holes (16) are respectively provided inside the top ends of both sides of the screw body (1), and connecting bolts (17) are provided inside the reserved holes (16). Connecting holes (18) are respectively provided inside the sides of the plug (20), and through holes (19) are provided inside the plug (20).

2. The hollow drainage screw structure according to claim 1, characterized in that: The reserved hole (16) penetrates the interior of the screw body (1), and the connecting bolt (17) penetrates the interior of the reserved hole (16) and is threaded into the connecting hole (18).

3. The hollow drainage screw structure according to claim 1, characterized in that: The through hole (19) penetrates the interior of the insert (20) and communicates with the interior of the hollow cavity (15).

4. The hollow drainage screw structure according to claim 1, characterized in that: The outer side of the tail cap (6) is provided with a connecting groove (7), and the top of the tail cap (6) is provided with a top cover (9).

5. A hollow drainage screw structure according to claim 4, characterized in that: The connecting groove (7) is provided with an external thread, and the top cover (9) is provided with an internal thread that matches the external thread. The top cover (9) is rotatably connected in the connecting groove (7).

6. The hollow drainage screw structure according to claim 1, characterized in that: The screw body (1) has several guide holes (12) inside both ends. A horizontal bar (13) is fixed inside the guide hole (12), and a vertical bar (14) is fixed at the front end of the horizontal bar (13).

7. A hollow drainage screw structure according to claim 6, characterized in that: The top and bottom ends of the vertical bar (14) are fixedly connected to the top and bottom ends inside the guide hole (12), respectively.

8. A hollow drainage screw structure according to claim 1, characterized in that: The tail cap (6) is rotatably connected to a connecting seat (8), the bottom of the screw body (1) is provided with a first threaded part (2), the top of the screw body (1) is provided with a second threaded part (3), and the two ends of the tail cap (6) are respectively provided with openings (10).

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