Gasket structure of hollow nail assembly for orthopedics department

Abstract

The utility model relates to the technical field of medical treatment, in particular to a gasket structure of an orthopedic hollow nail component, which comprises a ring body, a central hole is arranged at the center of the ring body, a groove is arranged above the central hole in a conducting manner, a salient point fastener is arranged on the inner side of the groove, a nail rod is inserted into the central hole, and the nail rod is connected with a hollow nail body. According to the hollow screw assembly for the orthopedics department, through the arrangement of the protruding point buckle, the center hole, the clamping groove and the threaded clamping ring, the hollow screw assembly can be conveniently screwed in in the clockwise direction when the hollow screw is placed in the process that the hollow screw assembly is put into the orthopedics department for treatment; according to the hollow screw, the gasket can be placed and pressurized together, so that tight combination between the gasket and the hollow screw is ensured, the gasket and the hollow screw are not separated when the hollow screw is taken out and rotated anticlockwise, the taking-out operation is simplified, and the surgical risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical technology, specifically to a washer structure for an orthopedic hollow nail assembly. Background Technology

[0002] In orthopedic surgery, because patients' bones are relatively loose, hollow screws are designed to be thicker, have deeper threads, and be longer, making them specifically used for fixing cancellous bone fractures to promote fracture healing. They play an important role in internal fixation of fractures. When using hollow screws to fix fracture sites, they are usually used in conjunction with washers.

[0003] In existing technologies, when using hollow screws to fix fracture sites, the traditional combination of hollow screws and washers often presents problems such as complicated operation during surgical implantation and removal, and easy separation of the washer and screw during removal. These problems not only increase the difficulty and time of the operation, but may also have an adverse impact on the patient's recovery. Therefore, a washer structure for orthopedic hollow screw components is proposed to address the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a washer structure for an orthopedic hollow screw assembly, so as to solve the problems mentioned in the background art, such as complicated operation and easy separation of the washer and screw when removing the hollow screw to fix the fracture site.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A washer structure for an orthopedic hollow screw assembly includes a ring body with a central hole at its center. A groove is provided above the central hole, and a protruding snap is provided on the inner side of the groove. A screw rod is inserted into the inner side of the central hole. A threaded retaining ring is fixedly connected to the top of the screw rod, and a screw tail is fixedly connected to the top of the threaded retaining ring. A retaining groove is formed on the outer surface of the screw tail. The groove and the ring body are integrally formed.

[0007] Preferably, the inner side of the central hole is provided with an internal thread that engages with the threaded snap ring, and the outer diameter of the threaded snap ring and the inner diameter of the central hole are dimensionally matched.

[0008] Preferably, a rubber ring is provided at the top of the ring body, the nail rod passes through the interior of the rubber ring, and a step is fixedly connected to the top of the nail tail, with the step and the rubber ring being mated together.

[0009] Preferably, the lower part of the nail rod is provided with a threaded portion, the diameter of which is larger than the diameter of the smooth part of the nail rod, and the threaded portion is a tapping thread.

[0010] Preferably, the outer end of the nail tail and the inner end of the groove are shaped to match each other, the side of the nail tail facing the nail rod is tapered, the groove is gradually recessed towards the center of the ring body, and the number of slots and the number of protruding buckles are set in a one-to-one correspondence.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] In this invention, the protruding snap fastener, central hole, slot, and threaded retaining ring facilitate the use of the orthopedic hollow screw assembly in orthopedic treatment. Through the interlocking mechanism between the reverse thread inside the washer and the protruding snap fastener and slot, the washer is inserted and pressurized when the hollow screw is rotated clockwise, ensuring a tight fit between the washer and the hollow screw. Furthermore, when removing the hollow screw, the washer and hollow screw do not separate when rotated counterclockwise, simplifying the removal operation and reducing surgical risks. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the connection structure between the ring body and the nail tail of this utility model;

[0015] Figure 3 This is a schematic diagram of the half-section structure of the ring body of this utility model;

[0016] Figure 4 This is a schematic diagram of the main structure of the nail tail of this utility model.

[0017] In the diagram: 1. Ring body; 2. Center hole; 3. Rubber ring; 4. Raised buckle; 5. Groove; 6. Nail rod; 7. Threaded retaining ring; 8. Nail tail; 9. Step; 10. Threaded part; 11. Slot. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1-4 This utility model provides a technical solution:

[0020] A washer structure for an orthopedic hollow screw assembly includes a ring body 1, a central hole 2 at the center of the ring body 1, a groove 5 above the central hole 2, a protruding buckle 4 inside the groove 5, a screw rod 6 inserted into the inner side of the central hole 2, a threaded retaining ring 7 fixedly connected to the top of the screw rod 6, a screw tail 8 fixedly connected to the top of the threaded retaining ring 7, and a retaining groove 11 on the outer surface of the screw tail 8. The groove 5 and the ring body 1 are integrally formed.

[0021] like Figure 1 , Figure 3 and Figure 4 As shown, the inner side of the center hole 2 is provided with an internal thread that engages with the threaded retainer 7. The outer diameter of the threaded retainer 7 and the inner diameter of the center hole 2 are dimensionally matched. After the washer is threadedly connected to the threaded retainer 7 through the internal thread in the center hole 2, the washer will be stably screwed to the upper position of the hollow nail. A rubber ring 3 is provided at the top of the ring body 1. The nail rod 6 passes through the interior of the rubber ring 3. The top of the nail tail 8 is fixedly connected to a step 9. The step 9 and the rubber ring 3 are mated together. When the washer and the hollow nail are screwed together, the parts fit tightly together, so that the nail tail 8 can fit into the groove 5. Internally, step 9 engages with rubber ring 3. This engagement further restricts the washer, improving its stability after connection with the hollow nail. The outer end of nail tail 8 and the inner end of groove 5 are shaped to match. Nail tail 8 has a tapered surface facing nail rod 6, and groove 5 gradually recesses towards the center of ring body 1. The number of slots 11 and the number of protruding buckles 4 are correspondingly arranged. When nail tail 8 engages with the groove 5 as the washer is assembled, the connection between the two allows for a more natural fit between the washer and the hollow nail.

[0022] like Figure 1 , Figure 2 and Figure 3 As shown, the lower part of the nail rod 6 is provided with a threaded part 10. The diameter of the threaded part 10 is larger than the diameter of the smooth part of the nail rod 6. The threaded part 10 is a tapping thread. When the hollow nail is placed into the patient's fracture site, the threaded part 10 is set to be a tapping thread, which allows it to drill into the bone more quickly and fix the single hollow nail in place quickly.

[0023] Workflow: When using this orthopedic hollow screw assembly to treat patients, before inserting a single hollow screw, first tighten the ring 1 and threaded retaining ring 7 by rotating them counterclockwise. When inserting a single hollow screw, rotate it clockwise into the area of ​​the patient's fracture that needs fixation, so that the ring 1 can be inserted and pressurized together, thereby ensuring a tight fit between the washer and the hollow screw. The step 9 will also be tightly connected with the rubber ring 3. At the same time, with the washer and the hollow screw tightly connected, the protruding buckles 4 in the groove 5 will be locked into the multiple slots 11 after tightening. The connection between the two can prevent the washer from turning back and loosening after installation. Furthermore, by using the counterclockwise rotation method to remove the hollow screw, the tight connection between the ring 1 and the single hollow screw can ensure that the two are always together and not easily separated.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A washer structure of an orthopedic cannulated screw assembly comprising a washer body (1), characterized in that: The center hole (2) is provided with a recess (5) on the top, the inner side of the recess (5) is provided with a convex point buckle (4), the inner side of the center hole (2) is inserted with a nail rod (6), the top end of the nail rod (6) is fixedly connected with a threaded snap ring (7), the top end of the threaded snap ring (7) is fixedly connected with a nail tail (8), the outer surface of the nail tail (8) is provided with a clamping groove (11), and the recess (5) and the ring body (1) are integrally formed.

2. The washer structure of a cannulated screw assembly for orthopedic surgery according to claim 1, wherein: The inner side of the center hole (2) is provided with an internal thread for threadedly connecting with the threaded snap ring (7), and the outer diameter of the threaded snap ring (7) and the inner diameter of the center hole (2) are in size matching arrangement.

3. The washer structure of a cannulated screw assembly for orthopedic surgery according to claim 1, wherein: The top of the ring body (1) is provided with a rubber ring (3), the nail rod (6) penetrates through the inside of the rubber ring (3), the top end of the nail tail (8) is fixedly connected with a step (9), and the step (9) and the rubber ring (3) are in abutting matching arrangement.

4. The washer structure of a cannulated screw assembly for orthopedic surgery according to claim 1, wherein: The lower part of the nail rod (6) is provided with a threaded part (10), the diameter of the threaded part (10) is larger than that of the light rod part of the nail rod (6), and the threaded part (10) is a threaded hole.

5. The washer structure of a cannulated screw assembly for orthopedic surgery according to claim 1, wherein: The outer end of the nail tail (8) and the inner end of the recess (5) are in shape matching arrangement, one side of the nail tail (8) towards the nail rod (6) is a conical surface, the recess (5) is gradually recessed towards the center of the ring body (1), and the number of the clamping grooves (11) and the number of the convex point buckles (4) are one-to-one corresponding arrangement.

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