Closed-type locking device

Abstract

The embodiment of the invention relates to a closed-type locking device. The locking device comprises a special-shaped block, a connecting rod, a fixing block, a locking screw and an end fixing block;the special-shaped block comprises a first fixing part and a second fixing part; the first fixing part and the second fixing part are connected and are integrally formed; the connecting rod comprisesa first rod body, a second rod body and a third rod body in sequence, wherein the first rod body, the second rod body and the third rod body are integrally arranged; the fixing block comprises a connecting rod through hole, wherein the fixing block is inserted by the second rod body of the connecting rod through the connecting rod through hole; the locking screw comprises a screw cap, an upper screw connection part, a lower screw connection part and a screw head; and the end fixing block comprises a fixing hole and a connecting rod inserting hole, wherein the fixing hole is arranged in the end fixing block, the connecting rod inserting hole is formed in the side surface of the fixing block, and the third connecting rod body of the connecting rod is inserted into the connecting inserting hole.

Description

technical field [0001] The invention relates to the field of orthopedic medical instruments, in particular to a closed locking device. Background technique [0002] Human bones have different shapes and complex structures. In the event of fractures and other injuries, medical treatment and rehabilitation usually require appropriate treatment based on the bone structure of the injured part. When the fractured part is close to the joint, If plaster fixation is less suitable, bone plates and nails are usually used to fix the fracture. [0003] In the process of the above-mentioned fixation device being specifically applied to fracture fixation, there are problems of stress shielding, stress concentration, and stress shielding. External fixators often cannot be used as final locking devices due to postoperative infection. In addition, in the existing instruments that use the connecting rod and the clamp block as the connection and locking device, the clamp block and the connec...

AI Technical Summary

Problems solved by technology

In addition, in the existing instruments that use the connecting rod and the clamp block as the connection and locking device, the clamp block and the connecting rod slide and turn during the operation and use during the operation, which seriously affects the operation. Rod removal and rod slipping resulting in postoperative nonunion or malunion

It can be seen that the traditional fracture locking device has the defects of inconvenient selection and use, inflexible use, high manufacturing cost, and poor clinical treatment effect, and further improvement is urgently needed.

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