An osteosynthesis screw

Abstract

This application relates to the field of fracture treatment, and particularly to an osteosynthesis screw, which comprises a screw body; a tail piece disposed at the non-tip end of the screw body; and a reinforcement device disposed inside the screw body and connected to the end of the tail piece. The reinforcement device includes an extension rod connected to the tail piece, a rod-shaped component abutting against one end of the extension rod away from the tail piece, and a fitting for fixing the position of the rod-shaped component; a hole for the rod-shaped component to extend out is formed on the side wall of the screw body. This application can improve the stability of the osteosynthesis screw, thereby ensuring the healing effect of the patient.

Description

Technical Field

[0001] This application relates to the field of fracture treatment, and particularly to an osteosynthesis screw. Background Art

[0002] With the intensification of the aging population trend, sports injury problems such as fractures have received increasing attention. A fracture refers to a complete or partial break in the continuity of the bone structure, which is more common in children and the elderly. During the treatment of fractures, osteosynthesis screws are implanted and fixed to the bone. The osteosynthesis screws are precisely screwed into the fractured bone blocks to firmly fix the fracture site and help the bones heal smoothly. Whether it is the shoulder, elbow, hip, knee, or spine, osteosynthesis screws can play their miraculous repair role to help patients return to a healthy life earlier.

[0003] As the core equipment for internal fixation surgery of fractures, it plays a crucial role in fracture treatment. Although the current osteosynthesis screws on the market can meet the basic fixation requirements, in the face of complex fracture situations, there are problems such as insufficient fixation and unsatisfactory healing effect with bone tissue during the use of osteosynthesis screws. Summary of the Invention

[0004] In order to improve the stability of the osteosynthesis screw and thus ensure the healing effect of patients, this application provides an osteosynthesis screw.

[0005] The osteosynthesis screw provided by this application adopts the following technical solutions:

[0006] An osteosynthesis screw, comprising:

[0007] A screw body;

[0008] A tail piece, provided at the non-tip end of the screw body;

[0009] A reinforcement device, provided inside the screw body and connected to the end of the tail piece. The reinforcement device includes an extension rod connected to the tail piece, a rod-shaped component abutted against the end of the extension rod away from the tail piece, and a fitting for fixing the position of the rod-shaped component;

[0010] A hole is provided on the side wall of the screw body for the rod-shaped component to extend out.

[0011] By adopting the above technical solutions, the fracture area is set as A and B. The screw body is screwed in from one end of A until the front end of the screw body is screwed into B. At this time, the tail piece is screwed into the tail of the screw body. At this time, due to the tapered design of the tail piece, A will be pressed against B. At the same time, the extension rod drives the rod-shaped component to penetrate into the B bone tissue for fixation inside the fitting. There are more voids in the screw body, and a drug promoting bone growth is applied, which is convenient for bone healing. The screw body is firmly fixed to the bone tissue, thereby improving the stability of the osteosynthesis screw and ensuring the healing effect of patients.

[0012] Optionally, the rod-shaped component includes a connecting rod abutting against one end of the extension rod away from the tail piece, a rotating shaft passing through the fitting, and a clamping piece and a fixing foot connected to the rotating shaft. The connecting rod is connected to the rotating shaft, and the fixing foot is placed outside the fitting.

[0013] By adopting the above technical solution, when the extension rod is screwed into the nail body, it will squeeze the connecting rod. The connecting rod and the clamping piece simultaneously cause the rotating shaft to rotate around the fitting, driving the fixing foot to move upward. At this time, the tail piece has been screwed into the nail body, and the fixing foot pierces into the bone tissue, thus completing the implantation.

[0014] Optionally, the surface of the fixing foot is inclined, and the distance between the surface of the fixing foot and the fitting gradually increases from near the clamping piece to far from the clamping piece.

[0015] By adopting the above technical solution, the inclined surface design of the fixing foot makes the contact area between the fixing foot and the fitting larger, providing a more stable support, making the fixing foot more stable after piercing into the tissue, effectively preventing shaking or displacement during use, and enhancing the overall stability. When subjected to external pressure or load changes, the fixing foot can absorb and disperse stress through the elastic deformation of its inclined surface, thereby protecting the main structure from damage.

[0016] Optionally, the cross-section of the fitting is square, and there are multiple rod-shaped components. The rod-shaped components are arranged on each side of the fitting.

[0017] By adopting the above technical solution, the combination of the square cross-section fitting and the multi-sided arranged rod-shaped components provides excellent stability. The rod-shaped components on each side can pierce into the tissue interior, effectively preventing shaking or displacement during use. Moreover, the arrangement of multiple rod-shaped components enables the fitting to be configured diversely according to actual needs. The square cross-section can provide a larger bearing area, and the rod-shaped components distributed on each side enhance the bearing capacity of the overall structure like brackets.

[0018] Optionally, fixing holes are formed on the side wall of the fitting, and a cylinder capable of being embedded in the fixing holes is installed on the inner wall of the clamping piece. When the rod-shaped component is in a non-loaded state, the fixing foot is fixed to the fitting.

[0019] By adopting the above technical solution, a cylinder is provided on the fixing foot, and the cylinder is matched with the fixing hole on the fitting part to ensure a stable state of the fixing foot when the rod-shaped component is not stressed. Through the tight fit between the fixing hole and the cylinder, the connection between the fitting part and the clamping part is more stable, effectively preventing loosening or falling off before use and greatly improving the stability of the overall structure.

[0020] Optionally, a connecting column is arranged inside the nail body, and threads are processed on the outer side of the connecting column, and the connecting column fixes the position of the fitting part.

[0021] By adopting the above technical solution, the arrangement of the connecting column can not only fix the position of the fitting part through the threads processed on the outer side, effectively preventing loosening and slipping, ensuring the stability and safety of the overall structure; at the same time, it provides a limit for the downward movement distance of the connecting rod, strictly controlling the maximum downward movement distance of the connecting rod, thereby controlling the depth of the fixing foot penetrating into the tissue, and effectively avoiding tissue damage that may be caused by excessive movement.

[0022] Optionally, a threaded block is arranged between the tail piece and the extension rod, and a threaded groove matching the threaded block is opened at one end of the nail body close to the tail piece.

[0023] By adopting the above technical solution, through the tight fit between the threaded block and the threaded groove, the connection between the tail piece and the extension rod becomes very stable. This threaded connection method can prevent loosening or falling off during use, ensuring stability and safety during use. The design of the threaded connection makes the length between the tail piece and the extension rod adjustable, and the staff can adjust the length according to actual needs to meet the needs of different patients. At the same time, the threaded connection method makes the installation and disassembly of the tail piece and the extension rod very simple and convenient.

[0024] Optionally, a plurality of square holes are opened on the nail body, and the plurality of square holes are respectively arranged at intervals along the length direction and the circumferential direction of the nail body.

[0025] By adopting the above technical solution, the opening of the square holes provides a growth channel for bone tissue, enabling the bone tissue to grow into the nail body more smoothly and form a closer combination with the nail body. This bone fusion effect helps to improve the stability and long-term effect of the implant. The bone tissue growing in through the square holes can form a more firm connection with the surrounding bone structure, thereby enhancing the fixing effect of the nail body. This design effectively reduces the risk of loosening or displacement of the implant.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. By setting a nail body, a tail piece, a reinforcement device, an extension rod, a rod-shaped component, a fitting, and a hole, the fracture area is set as A and B. The nail body is screwed in from one end of A until the front end of the nail body is screwed into B. At this time, the tail piece is screwed into the tail of the nail body. At this time, due to the conical design of the tail piece, A will be in close contact with B. At the same time, the extension rod drives the rod-shaped component to extend out of the hole inside the fitting and pierce into the bone tissue of B to complete the fixation. The nail body has more voids and is coated with drugs that promote bone growth, facilitating bone healing. The nail body is firmly fixed to the bone tissue, thereby improving the stability of the bone screw and ensuring the healing effect of the patient.

[0028] 2. By setting a connecting rod, a rotating shaft, a clamping part, and a fixing foot, when the extension rod is screwed into the nail body, it will squeeze the connecting rod. The connecting rod and the clamping part simultaneously cause the rotating shaft to rotate around the fitting, driving the fixing foot to move upward. At this time, the tail piece has been screwed into the nail body, and the fixing foot pierces into the bone tissue, thus completing the implantation.

[0029] 3. By setting a fixing hole and a cylinder, when the rod-shaped component is in a state of not being stressed, the fixing foot is fixed to the fitting. The fixing foot is provided with a cylinder, and the cylinder cooperates with the fixing hole on the fitting to ensure a stable state of the fixing foot when the rod-shaped component is not stressed. Through the tight cooperation of the fixing hole and the cylinder, the connection between the fitting and the clamping part is more stable, effectively preventing loosening or falling off before use and greatly improving the stability of the overall structure. Description of the Drawings

[0030] Figure 1 is the overall structure schematic diagram of the present application.

[0031] Figure 2 is the cross-sectional structure schematic diagram of the present application.

[0032] Figure 3 is Figure 2 the enlarged structure schematic diagram at C in

[0033] Figure 4 is the overall structure schematic diagram inside the present application.

[0034] Figure 5 is the schematic diagram of the present application penetrating into the fracture area

[0035] Description of the Reference Numerals: 1. Nail body; 2. Tail piece; 3. Reinforcement device; 31. Extension rod; 32. Rod-shaped component; 321. Connecting rod; 322. Rotating shaft; 323. Clamping part; 324. Fixing foot; 33. Fitting; 4. Hole; 5. Fixing hole; 6. Cylinder; 7. Connecting column; 8. Threaded block; 9. Square hole; 10. Locking groove. Detailed Embodiments

[0036] The following is combined with the attachedFigures 1-5 Further detailed description of the present application is provided below.

[0037] An embodiment of the present application discloses an osteosynthesis screw.

[0038] Referring to Figure 1 、 Figure 2 and Figure 5 An osteosynthesis screw includes a screw body 1, a tail piece 2 provided at the non-tip end of the screw body 1, and a reinforcement device 3 provided inside the screw body 1.

[0039] The reinforcement device 3 is connected to the end of the tail piece 2. The reinforcement device 3 includes an extension rod 31 connected to the tail piece 2, a rod-shaped component 32 abutted against one end of the extension rod 31 away from the tail piece 2, and a fitting 33 for fixing the position of the rod-shaped component 32; a hole 4 for the rod-shaped component 32 to extend out is formed on the side wall of the screw body 1.

[0040] Set the fracture area as A and B. Screw the screw body 1 from one end of A until the front end of the screw body 1 is screwed into B. At this time, screw the tail piece 2 into the tail of the screw body 1. At this time, due to the tapered design of the tail piece 2, A will be pressed against B. At the same time, the extension rod 31 drives the rod-shaped component 32 to extend out of the hole 4 inside the fitting 33 and penetrate into the B bone tissue to complete the fixation. The screw body 1 has more voids and is coated with a drug to promote bone growth, which is convenient for bone healing. The screw body 1 is firmly fixed to the bone tissue, thereby improving the stability of the osteosynthesis screw and ensuring the healing effect of the patient.

[0041] Referring to Figure 2 The rod-shaped component 32 includes a connecting rod 321 abutted against one end of the extension rod 31 away from the tail piece 2, a rotating shaft 322 penetrating through the fitting 33, and a clamping member 323 and a fixing foot 324 connected to the rotating shaft 322. The connecting rod 321 is connected to the rotating shaft 322, and the fixing foot 324 is placed outside the fitting 33.

[0042] When the extension rod 31 is screwed into the screw body 1, it will squeeze the connecting rod 321. The connecting rod 321 and the clamping member 323 simultaneously cause the rotating shaft 322 to rotate around the fitting 33, driving the fixing foot 324 to move upward. At this time, the tail piece 2 has been screwed into the screw body 1, and the fixing foot 324 penetrates into the bone tissue, thus completing the implantation.

[0043] The surface of the fixing foot 324 is inclined, and the distance between the surface of the fixing foot 324 and the mating part 33 gradually increases from near the clamping part 323 to far from the clamping part 323. The inclined surface design of the fixing foot 324 enables a larger contact area between the fixing foot 324 and the mating part 33, providing more stable support, making the fixing foot 324 more stable after piercing into the tissue, effectively preventing shaking or displacement during use, and enhancing the overall stability. When subjected to external pressure or load changes, the fixing foot 324 can absorb and disperse stress through the elastic deformation of its inclined surface, thereby protecting the main structure from damage.

[0044] Refer to Figure 2 and Figure 3 , a fixing hole 5 is provided on the side wall of the mating part 33, and a cylinder 6 that can be embedded in the fixing hole 5 is installed on the inner wall of the clamping part 323. When the rod-shaped assembly 32 is in an unloaded state, the fixing foot 324 is fixed to the mating part 33. A cylinder 6 is provided on the fixing foot 324, and the cylinder 6 cooperates with the fixing hole 5 on the mating part 33 to ensure a stable state of the fixing foot 324 when the rod-shaped assembly 32 is in an unloaded state. Through the tight cooperation between the fixing hole 5 and the cylinder 6, the connection between the mating part 33 and the clamping part 323 is more stable, effectively preventing loosening or falling off before use, and greatly improving the stability of the overall structure.

[0045] A connecting column 7 is provided inside the nail body 1, and threads are processed on the outer side of the connecting column 7. The connecting column 7 fixes the position of the mating part 33. The setting of the connecting column 7 can not only fix the position of the mating part 33 through the threads processed on the outer side, effectively preventing loosening and slipping, and ensuring the stability and safety of the overall structure; at the same time, it provides a limit for the downward movement distance of the connecting rod 321, strictly controlling the maximum downward movement distance of the connecting rod 321, thereby controlling the depth of penetration of the fixing foot 324 into the tissue, and effectively avoiding tissue damage that may be caused by excessive movement.

[0046] Refer to Figure 4 , the cross-section of the mating part 33 is square, and multiple rod-shaped assemblies 32 are provided. Each side of the mating part 33 is provided with a rod-shaped assembly 32. The combination of the square cross-section mating part 33 and the multi-sided rod-shaped assemblies 32 provides excellent stability. The rod-shaped assemblies 32 on each side can penetrate into the tissue, effectively preventing shaking or displacement during use. Moreover, the setting of multiple rod-shaped assemblies 32 enables the mating part 33 to be configured diversely according to actual needs. The square cross-section can provide a larger bearing area, and the rod-shaped assemblies 32 distributed on each side enhance the bearing capacity of the overall structure like brackets.

[0047] A threaded block 8 is provided between the tail piece 2 and the extension rod 31. A threaded groove that mates with the threaded block 8 is provided at one end of the nail body 1 near the tail piece 2. Through the tight fit between the threaded block 8 and the threaded groove, the connection between the tail piece 2 and the extension rod 31 becomes very stable. This threaded connection method can prevent loosening or falling off during use, ensuring stability and safety during use. The threaded connection design makes the length between the tail piece 2 and the extension rod 31 adjustable, and the staff can adjust the length according to actual needs to meet the needs of different patients. At the same time, the threaded connection method makes the installation and disassembly of the tail piece 2 and the extension rod 31 very simple and convenient.

[0048] Referring to Figure 1 , a plurality of square holes 9 are provided in the nail body 1, and the plurality of square holes 9 are spaced apart along the length direction and the circumferential direction of the nail body 1 respectively. A locking groove 10 for convenient screwing is also provided at the end of the nail body 1 near the tail piece 2. When it is necessary to screw the nail body 1 into human tissue, the tool claw can be stuck at the locking groove 10, which is more convenient for screwing in.

[0049] The opening of the square holes 9 provides a growth channel for bone tissue, enabling the bone tissue to grow into the nail body 1 more smoothly and form a closer bond with the nail body 1. This bone fusion effect helps to improve the stability and long-term effect of the implant. The bone tissue growing in through the square holes 9 can form a more firm connection with the surrounding bone structure, thereby enhancing the fixing effect of the nail body 1. This design effectively reduces the risk of loosening or displacement of the implant.

[0050] The implementation principle of the bone screw in the embodiment of the present application is as follows: Set the fracture area as A and B. First, drill a hole to connect the fracture areas A and B, and then place the tool at the locking groove 10 and screw the nail body 1 in from one end of A until the front end of the nail body 1 is screwed into B. At this time, screw the tail piece 2 into the tail of the nail body 1 and twist it. At this time, due to the conical design of the tail piece 2, A will be pressed against B. When the extension rod 31 is screwed into the nail body 1, it will squeeze the connecting rod 321, and the connecting rod 321 and the engaging member 323 will simultaneously cause the rotating shaft 322 to rotate around the mating member 33, driving the fixing foot 324 to move upward. At this time, the tail piece 2 has been screwed into the nail body 1, and the fixing foot 324 pierces into the bone tissue, and thus the implantation is completed. The nail body 1 has many voids and is coated with drugs that promote bone growth, which is convenient for bone healing. The nail body 1 is firmly fixed to the bone tissue, thereby improving the stability of the bone screw and ensuring the healing effect of the patient.

[0051] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A bone screw, characterized in that: include: Nail body (1); A tail piece (2) is arranged at a non-tip end of the nail body (1); A reinforcing device (3) is arranged inside the nail body (1) and connected to the end of the tail piece (2), the reinforcing device (3) comprising an extension rod (31) connected to the tail piece (2), a rod-shaped component (32) abutting against an end of the extension rod (31) away from the tail piece (2), and a matching component (33) for fixing the position of the rod-shaped component (32); A hole (4) is provided on the side wall of the nail body (1) for the rod-shaped component (32) to extend out; The rod-shaped component (32) comprises a connecting rod (321) abutting against one end of the extension rod (31) away from the tail piece (2), a rotating shaft (322) passing through the matching piece (33), and a clamping piece (323) and a fixing foot (324) connected to the rotating shaft (322); the connecting rod (321) is connected to the rotating shaft (322), and the fixing foot (324) is placed on the outside of the matching piece (33); A connecting column (7) is arranged inside the nail body (1), and a thread is processed on the outer side of the connecting column (7). The connecting column (7) fixes the position of the matching piece (33).

2. A bone screw according to claim 1, characterized in that: The surface of the fixing foot (324) is arranged obliquely, and the distance between the surface of the fixing foot (324) and the matching piece (33) gradually increases from being close to the clamping piece (323) to being far away from the clamping piece (323).

3. A bone screw according to claim 1, characterized in that: The cross section of the matching piece (33) is arranged to be square, a plurality of the rod-shaped components (32) are arranged, and each side surface of the matching piece (33) is provided with the rod-shaped component (32).

4. A bone screw according to claim 1, characterized in that: A fixing hole (5) is provided on the side wall of the matching piece (33), and a cylinder (6) capable of being embedded in the fixing hole (5) is installed on the inner wall of the clamping piece (323); when the rod-shaped component (32) is not subjected to force, the fixing foot (324) is fixed to the matching piece (33).

5. The bone screw according to claim 1, characterized in that: A threaded block (8) is provided between the tail piece (2) and the extension rod (31), and a threaded groove matching the threaded block (8) is provided at one end of the nail body (1) close to the tail piece (2).

6. A bone screw according to claim 1, characterized in that: The nail body (1) is provided with a plurality of square holes (9), and the plurality of square holes (9) are respectively provided at intervals along the length direction and the circumferential direction of the nail body (1).

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