Closed-type locking device

A locking device and closed technology, applied in the direction of fixator, internal bone synthesis, external plate, etc., can solve the problems of poor clinical treatment effect, affecting surgical operation, non-union and other problems

Pending Publication Date: 2020-05-19
TIANJIN WALKMAN BIOMATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0132] Doctors use this fixation device for combined assembly for different types of fractures in fracture surgery. The process of combined use is described in detail below with the special-shaped block 5, the connecting rod 2, the single-rod fixed block 3A, the double-rod fixed block 3B, the locking screw 1 and the terminal fixed block 4 as examples.

[0133]Align the first rod bodies 21 of the two connecting rods 2 with the two connecting rod screw holes 522 of the second fixing part 52 of the special-shaped block 5 respectively, and then place the two connecting rods 2 along the openings of the connecting rod screw holes 522. direction into the second fixed part 52 of the special-shaped block 5, until the front ends of the first rod bodies of the two connecting rods 2 respectively abut against the ends of the connecting rod screw holes 522, and then connect the connecting rod through holes 34B of the double rod fixing block 3B Align and connect the two connecting rods 2 res...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/80
CPCA61B17/8004A61B17/8023A61B17/8052
Inventor 赵国军李新阳张庆杰
Owner TIANJIN WALKMAN BIOMATERIAL CO LTD
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