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Semienclosed fixing device

A fixation device, semi-closed technology, applied in the direction of fixator, internal fixator, internal bone synthesis, etc., can solve the problems of stress shielding, complicated operation, inconvenient use, etc.

Pending Publication Date: 2020-03-27
TIANJIN WALKMAN BIOMATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] It is unavoidable that people suffer from accidental injuries in life, which leads to fractures in the human body. In order to avoid leaving disabilities, the research and development personnel have developed a variety of products for fracture reduction in different parts. The problems of stress shielding and stress concentration seriously affect bone healing; intramedullary nail products are complicated to operate, and the implantation angle requires high precision, and angle deviation has a great impact on the operation. risks of
[0003] In the existing devices that use connecting rods and clamping blocks as connecting and fixing devices, the clamping block and connecting rods slide and rotate during operation and intraoperative use, which seriously affects the operation. and sliding rods resulting in postoperative nonunion or malunion
It can be seen that the traditional fracture fixation 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

[0100] Doctors use this fixation device for combined assembly for different types of fractures in fracture surgery. The process of combined use will be described in detail below by taking the single-rod fixing device composed of the connecting rod 2, the single-rod fixing block 3A, the double-rod fixing block 3B, the locking screw 1 and the end fixing block 4 as an example.

[0101] Align the first rod bodies 21 of the two connecting rods 2 with the connecting rod through-holes 34B of the double-rod fixing block 3B respectively, insert the first rod bodies 21 into the inside of the double-rod fixing block 3B along the opening direction of the holes, and then insert the single The connecting rod through hole 34A of the rod fixing block 3A is aligned with one of the connecting rods 2 and inserted into the connecting rod 2, and one or more single rod fixing blocks 3A or double rod fixing blocks 3B can be added according to the needs of the operation. Align the connecting rod thro...

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PUM

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Abstract

The embodiment of the invention relates to a semienclosed fixing device. The semienclosed fixing device comprises a connecting rod, a fixed block, a locking screw and an end head fixed block, whereinthe connecting rod sequentially comprises a first rod body, a second rod body and a third rod body; the first rod body, the second rod body and the third rod body are integrally arranged; the first rod body of the connecting rod is used for being in inserting connection to the fixed block or the end head fixed block; the fixed block comprises an upper edge part and a lower edge part; the locking screw comprises a screw cap, an upper threaded connection part, a lower threaded connection part and a screw head; the upper threaded connection part is connected with the screw cap; the lower threadedconnection part is connected with the upper threaded connection part; the screw head is connected with the lower threaded connection part; the end fixed block comprises a fixed threaded connection hole and a connecting rod inserting hole; the fixed threaded connection hole is formed in the end head fixed block; and the connecting rod inserting hole is formed in the side surface of the end head fixed block.

Description

technical field [0001] The invention relates to the field of orthopedic medical instruments, in particular to a semi-closed fixing device. Background technique [0002] It is unavoidable that people suffer from accidental injuries in life, which leads to fractures in the human body. In order to avoid leaving disabilities, the research and development personnel have developed a variety of products for fracture reduction in different parts. The problems of stress shielding and stress concentration seriously affect bone healing; intramedullary nail products are complicated to operate, and the implantation angle requires high precision, and angle deviation has a great impact on the operation. risks of. [0003] In the existing devices that use connecting rods and clamping blocks as connecting and fixing devices, the clamping block and connecting rods slide and rotate during operation and intraoperative use, which seriously affects the operation. And sliding rod so that postope...

Claims

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Application Information

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IPC IPC(8): A61B17/68
CPCA61B17/68A61B17/683
Inventor 李新阳赵国军廖翚
Owner TIANJIN WALKMAN BIOMATERIAL CO LTD
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