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Lower radioulnar joint reduction and fixation plate

A fixed plate and radial joint technology, applied in the direction of fixator, outer plate, internal bone synthesis, etc., can solve the problem of difficulty in maintaining the reduction of the ulna, and achieve the effect of avoiding the reduction of the range of motion, strengthening the effect of reduction, and reliable reduction

Inactive Publication Date: 2016-06-01
张文涛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a reset fixation plate, which not only solves the problem of difficult reset and maintenance of the distal end of the ulna, but also ensures the normal rotational movement of the radioulnar joint, conforming to physiological functions

Method used

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  • Lower radioulnar joint reduction and fixation plate
  • Lower radioulnar joint reduction and fixation plate
  • Lower radioulnar joint reduction and fixation plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] like figure 1 As shown, in this embodiment, the radius fixation part 2 is a radius hook, and a screw hole is provided on the radius hook. The radial hook is fixed on the radius 20 by a set screw 21 . The ulnar hook 1 and the radius fixation part 2 are integrally formed by memory alloy. This alloy will deform under the action of external force. When the external force is removed, it can return to its original shape under certain temperature conditions. After the lower radioulnar joint reduction and fixation plate was implanted in the body, the memory alloy restored to figure 1 In the shown shape, the ulna 10 is reset by the elastic force of the memory alloy. The ulnar hook 1 and the radial hook can be arranged on the same side, and during use, the lower radioulnar joint reduction and fixation plate is installed on the dorsal side of the hand.

Embodiment 2

[0030] like figure 2 As shown, the difference between the present embodiment and the first embodiment is that the shape of the lower radioulnar joint reduction and fixation plate is "S" shape, and the ulnar hook 1 and the radial hook are arranged on the opposite side.

Embodiment 3

[0032] like image 3 As shown, the ulnar hook 1 and the radial hook are split structures, the radial fixing part 2 is the radial hook, and the radial hook is provided with screw holes. One end of the ulnar hook 1 is a free end, and the other end is provided with an ulnar hook connecting plate 14, and the ulnar hook connecting plate 14 is provided with screw holes. One end of the radial hook is a free end, and the other end is provided with a radial hook connecting plate 24, and the radial hook connecting plate 24 is provided with a screw hole. At least one of the screw holes on the ulnar hook connecting plate 14 and the screw holes on the radius hook connecting plate 24 is a waist screw hole. In this embodiment, the screw holes on the ulnar hook connecting plate 14 are waist-shaped screw holes. During the operation, the ulnar hook 1 is used to hook the ulna 10 first, and then the radial hook is fixed on the radius 20 through the fixing screw 21 through the same incision. Fo...

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Abstract

The invention provides a distal radioulnar joint reduction fixation plate, and belongs to the field of internal fixation instruments for clinical medicine orthopedic operations. The distal radioulnar joint reduction fixation plate comprises an ulna hook and a radius fixing portion, wherein the ulna hook surrounds the periphery of an ulna and is used for hooking the ulna, the radius fixing portion is used for fixing a radius, and the ulna hook and the radius fixing portion are positioned at two ends of the distal radioulnar joint reduction fixation plate respectively. The distal radioulnar joint reduction fixation plate is fixed onto the radius through the radius fixing portion, the ulna is hooked by the ulna hook, reduction effects can be enhanced, the shortcoming of loosening caused by suture is overcome, reduction of the movement range of a distal radioulnar joint and complications of synostosis caused by ulna and radius steel needle fixation are avoided, reduction can be reliable by the aid of the distal radioulnar joint reduction fixation plate, rotation of the distal radioulnar joint is limited, natural healing of a distal radioulnar joint ligament or / and a joint capsule is facilitated, surgical effects are improved, and the complications are decreased.

Description

technical field [0001] The invention relates to an internal fixation device for orthopedic surgery in clinical medicine, in particular to a reduction and fixation plate. Background technique [0002] The lower radioulnar joint of the upper limbs will be dislocated due to trauma such as falls. The main treatment method is surgical reduction, and it needs to be fixed after reduction. The simple suture fixation method currently used may loosen and fall off, and ligament suture or ligament reconstruction cannot achieve complete reduction due to insufficient pulling force of the soft tissue, and subluxation is often left behind. Although the crossing steel pin fixation is firm, the steel pin fixation will eliminate the inherent physiological rotation function of the radioulnar joint. Loss of serious complications. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a reduction and fixatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/80
CPCA61B17/80
Inventor 张文涛
Owner 张文涛
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