Combined compression locking type anterior cervical resetting fixture

Abstract

The invention discloses a combined compression locking type anterior cervical resetting fixture, which comprises a main board 1, an auxiliary board 2, a locking board screw 3, an internal screw 4 and an external screw 5, wherein an internal screw hole is formed in the head part of the main board 1; a locking board screw hole is formed in the body part of the main board 1; an internal screw hole is formed in the head part of the auxiliary board 2; a locking board screw hole is formed in the body part of the auxiliary board 2; the main board 1 and the auxiliary board 2 are mutually overlapped and connected through the body parts; and the external screw 5 has internal threads matched with the threads of the internal screw 4. Making a change to the traditional structural design mode of nail board and auxiliary 'locking', the combined compression locking type structure has multiple functions for internal fixation; and the combined compression locking type structure comprises a preset external screw, a matched multi-section opening device and a steel plate combination, and has the functions of regulating length, compressing and fully locking. Through the optimization of an operation mode by changing the design structure of a steel plate, operational injuries are reduced and internal fixation effect is enhanced for improving the safety and effectiveness of internal fixation.

Description

technical field [0001] The invention belongs to the technical field of medical orthopedic instruments, and in particular relates to a combined pressurized locking type anterior cervical reduction and fixation device which can effectively realize fracture reduction and fixation, and is especially suitable for orthopedic fixation of the anterior cervical spine and has the ability to prevent loosening of fixing screws. Background technique [0002] With the development of spinal surgery, anterior cervical fusion and plate fixation has become mature, but there are still some problems. First of all, in terms of design, the existing steel plate design almost comes from foreign countries, and its main design is a plate and nail structure, with additional locking devices, such as baffles, extrusion screws, expansion rings, etc. The purpose of these devices is to prevent screw withdrawal and enhance overall fixation. Nevertheless, there are still reports of internal fixation failure...

AI Technical Summary

Problems solved by technology

The problem that this order is prone to is the deviation of the selection of the length of the plate and the positioning and orientation of the screw. The result of the deviation is that the effectiveness and safety of internal fixation are affected

In another case, if a distraction screw is placed on the fixed segment, the following situations may occur: first, the existing instruments may affect the surgical field of view; second, the bone of the fixed vertebra is directly damaged; third, the screw is inserted Due to the interference of the propped nail hole, even the screw inserted into the hole is unstable, resulting in postoperative complications such as screw loosening and pulling out

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