Telescopic tibiofibular syndesmosis fastening screw

Abstract

The invention relates to a tibiofibular syndesmosis fastening screw. The telescopic tibiofibular syndesmosis fastening screw comprises a sleeve (1), wherein a profile hole is formed under the sleeve (1); a screw (2) is arranged in the sleeve (1), the upper end of the screw (2) is provided with a smooth section, the middle part of the screw (1) is provided with a profile section matched with the profile hole under the sleeve (1), and the lower part of the screw (1) is provided with the screw; and a return spring (3) is arranged between the smooth section of the screw (2) and the sleeve (1). The telescopic tibiofibular syndesmosis fastening screw has the advantages of being simple in structure and convenient to use. When tibiofibular syndesmosis is damaged, a screw is used for fixing; after ligament of the tibiofibular syndesmosis is completely healed and stressed when moving around, the profile section in the middle part of the screw slides and stretches in the profile hole; and when weight disappears, the screw is returned in the action of the return spring. The telescopic tibiofibular syndesmosis fastening screw is in accordance with the micro physical property of human inferior tibiofibular joint, so that the problem that a conventional screw is broken when being fixed can be solved.

Description

technical field

[0001] The invention relates to a lower tibiofibular syndesmosis fixation screw. Background technique

[0002] The inferior tibiofibular joint, also known as the inferior tibiofibular syndesmosis, is one of the important structures to maintain the stability of the ankle joint. The inferior tibiofibular syndesmosis is composed of the distal end of the tibiofibular bone and the inferior tibiofibular ligament complex. The separation of the inferior tibiofibular joint is the fracture and dislocation of the ankle joint. common concurrent injuries. Surgical treatment is generally adopted after the injury, using screws, tibiofibular hooks, anchors with wires, etc. for fixation, and screw fixation is the most commonly used. According to related reports, 15 cases of tibiofibular joint separation were treated with screw internal fixation, 6 cases of which were broken screws. Screw breakage can easily lead to complications such as ossification of the subtibiofibular s...

Examples

Embodiment 1

[0015] Example 1: see figure 2 , image 3 , a retractable lower tibiofibular syndesmosis screw, including a tube sleeve 1, a square hole is arranged under the tube sleeve 1, a screw 2 is arranged in the tube sleeve 1, the upper end of the screw 2 is a smooth section, and the middle part is a tube The square section matched with the square hole below the sleeve 1 has a screw at the bottom; a return spring 3 is arranged between the smooth section of the screw 2 and the pipe sleeve 1 . A nut 4 is fixedly connected with the pipe sleeve 1 at the top of the pipe sleeve 1, and the nut is larger than the pipe sleeve. The fixed connection between the nut 4 and the sleeve 1 is fixed pin connection.

Embodiment 2

[0016] Embodiment 2: A retractable lower tibiofibular syndesmosis screw, including a tube sleeve 1, a hexagonal hole is arranged below the tube sleeve 1, a screw 2 is arranged in the tube sleeve 1, the upper end of the screw 2 is a smooth section, and the middle part is It is a hexagonal section matched with the hexagonal hole below the pipe sleeve 1, and the lower part is a screw; a return spring 3 is arranged between the smooth section of the screw 2 and the pipe sleeve 1. The fixed connection between the nut 4 and the sleeve 1 is a reverse threaded connection. The rest is the same as the structure.

Embodiment 3

[0017] Embodiment 3: a retractable syndesmosis fixation screw, a retractable syndesmosis fixation screw, a retractable syndesmosis fixation screw, including a sleeve 1 and a tube sleeve 1 There is an octagonal hole at the bottom, and the screw 2 is arranged in the pipe sleeve 1. The upper end of the screw 2 is a smooth section, the middle part is an octagonal section matched with the octagonal hole below the pipe sleeve 1, and the lower part is a screw; the smooth section of the screw 2 A return spring 3 is provided between the pipe sleeve 1 . The fixed connection between the nut 4 and the sleeve 1 is the connection of the fixing screw. The rest is the same as the structure.

[0018] When in use, the hole is drilled first, because the turning nut of the present invention can drive the pipe sleeve to rotate, and the pipe sleeve drives the screw to rotate through the special-shaped hole. Larger than the sleeve, for this purpose, the syndesmosis can be fixed. The inferior tibi...

technical field

[0001] The invention relates to a lower tibiofibular syndesmosis fixation screw. Background technique

[0002] The inferior tibiofibular joint, also known as the inferior tibiofibular syndesmosis, is one of the important structures to maintain the stability of the ankle joint. The inferior tibiofibular syndesmosis is composed of the distal end of the tibiofibular bone and the inferior tibiofibular ligament complex. The separation of the inferior tibiofibular joint is the fracture and dislocation of the ankle joint. common concurrent injuries. Surgical treatment is generally adopted after the injury, using screws, tibiofibular hooks, anchors with wires, etc. for fixation, and screw fixation is the most commonly used. According to related reports, 15 cases of tibiofibular joint separation were treated with screw internal fixation, 6 cases of which were broken screws. Screw breakage can easily lead to complications such as ossification of the subtibiofibular s...

Examples

Embodiment 1

[0015] Example 1: see figure 2 , image 3 , a retractable lower tibiofibular syndesmosis screw, including a tube sleeve 1, a square hole is arranged under the tube sleeve 1, a screw 2 is arranged in the tube sleeve 1, the upper end of the screw 2 is a smooth section, and the middle part is a tube The square section matched with the square hole below the sleeve 1 has a screw at the bottom; a return spring 3 is arranged between the smooth section of the screw 2 and the pipe sleeve 1 . A nut 4 is fixedly connected with the pipe sleeve 1 at the top of the pipe sleeve 1, and the nut is larger than the pipe sleeve. The fixed connection between the nut 4 and the sleeve 1 is fixed pin connection.

Embodiment 2

[0016] Embodiment 2: A retractable lower tibiofibular syndesmosis screw, including a tube sleeve 1, a hexagonal hole is arranged below the tube sleeve 1, a screw 2 is arranged in the tube sleeve 1, the upper end of the screw 2 is a smooth section, and the middle part is It is a hexagonal section matched with the hexagonal hole below the pipe sleeve 1, and the lower part is a screw; a return spring 3 is arranged between the smooth section of the screw 2 and the pipe sleeve 1. The fixed connection between the nut 4 and the sleeve 1 is a reverse threaded connection. The rest is the same as the structure.

Embodiment 3

[0017] Embodiment 3: a retractable syndesmosis fixation screw, a retractable syndesmosis fixation screw, a retractable syndesmosis fixation screw, including a sleeve 1 and a tube sleeve 1 There is an octagonal hole at the bottom, and the screw 2 is arranged in the pipe sleeve 1. The upper end of the screw 2 is a smooth section, the middle part is an octagonal section matched with the octagonal hole below the pipe sleeve 1, and the lower part is a screw; the smooth section of the screw 2 A return spring 3 is provided between the pipe sleeve 1 . The fixed connection between the nut 4 and the sleeve 1 is the connection of the fixing screw. The rest is the same as the structure.

[0018] When in use, the hole is drilled first, because the turning nut of the present invention can drive the pipe sleeve to rotate, and the pipe sleeve drives the screw to rotate through the special-shaped hole. Larger than the sleeve, for this purpose, the syndesmosis can be fixed. The inferior tibi...

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