Intra-articular fracture percutaneous elastic expanding and restoration fixing device

An intra-articular fracture and fixation device technology, applied in the field of medical devices, can solve the problems of joint fixation stiffness, inability to effectively maintain fracture reduction, poor function, etc., and achieve the effects of avoiding secondary damage, being beneficial to joint function recovery, and having a simple structure.

Pending Publication Date: 2020-05-29
邓宇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the results of the above fixation methods either cannot effectively maintain the fracture reduction, or the final joint fixation is stiff, poor function, or even a combination of problems

Method used

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  • Intra-articular fracture percutaneous elastic expanding and restoration fixing device
  • Intra-articular fracture percutaneous elastic expanding and restoration fixing device
  • Intra-articular fracture percutaneous elastic expanding and restoration fixing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as figure 1 and 2 As shown, a percutaneous elastic expansion reduction and fixation device for intra-articular fractures includes a sleeve 1 that is open at one end and sealed at the other end. A chute 2 is arranged axially at one end of the sleeve 1 , the chute 2 runs through the wall of the sleeve, and a scale line 2a is provided along the length direction of the chute 2 on the thickness section through the sleeve.

[0030] The bottom of the other end of the sleeve 1 is provided with a coaxially distributed opening 3 . A pressure piston 4 is arranged in the sleeve 1, and a second sleeve 4a extends outward from one end of the pressure piston 4, and one end of the second sleeve 4a protrudes from the opening 3 of the sleeve 1. One end of 4a is connected with a correspondingly matched first screw 8 . There is a certain distance between the other end surface of the pressure piston 4 and the bottom of the other end of the sleeve 1 .

[0031] A second sealing ring 4...

Embodiment 2

[0040] Such as image 3 As shown, a percutaneous elastic expansion reduction and fixation device for intra-articular fractures includes a sleeve 1 that is open at one end and sealed at the other end. A chute 2 is arranged axially at one end of the sleeve 1 , the chute 2 runs through the wall of the sleeve, and a scale line 2a is provided along the length direction of the chute 2 on the thickness section through the sleeve.

[0041] The bottom of the other end of the sleeve 1 is provided with a coaxially distributed opening 3 . A pressure piston 4 is arranged in the sleeve 1, and a second sleeve 4a extends outward from one end of the pressure piston 4, and one end of the second sleeve 4a protrudes from the opening 3 of the sleeve 1. One end of 4a is connected with a correspondingly matched first screw 8 . There is a certain distance between the other end surface of the pressure piston 4 and the bottom of the other end of the sleeve 1 .

[0042] A second sealing ring 4b is sh...

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PUM

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Abstract

The invention provides an intra-articular fracture percutaneous elastic expanding and restoration fixing device which is characterized by comprising a sleeve (1), wherein one end of the sleeve (1) isopened; the other end of the sleeve (1) is sealed; the sleeve (1) is internally provided with a pressure piston (4); a power piston (5) and a power ball (6) in corresponding matching are arranged on one side of the pressure piston (4); a plugging device (7) in corresponding matching with the opening end of the sleeve (1) is arranged on one side of the power ball (6); a second sleeve (4a) is arranged at the other end of the pressure piston (4); one end of the second sleeve (4a) extends outside the sleeve (1); and the second sleeve (4a) is connected with a first screw (8) in corresponding match.The device is simple in structure, convenient to use and simple to operate, and complications such as ankylosis can be avoided while fracture restoration is maintained.

Description

Technical field: [0001] The invention relates to the field of medical devices, in particular to a percutaneous elastic expansion reduction and fixation device for intra-articular fractures. Background technique: [0002] Trauma is a major health problem and a significant cause of death, especially among young adults and adolescents. The severity and disability of posttraumatic sequelae have been paid more and more attention by various countries. Due to the complexity of joints and their surrounding structures, intra-articular fractures will have sequelae more or less after surgical or non-operative treatment. For example, distal humeral fractures, distal radius fractures, and distal tibial fractures (Pilon fractures). [0003] Our understanding of fracture treatment and healing has undergone important changes over the past decade as the principles of AO have evolved. In the early days of these principles, the primary goal of surgical treatment was to provide a firm fixati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/02A61B17/88A61B90/00
CPCA61B17/025A61B17/8866A61B17/8869A61B90/08A61B2090/0801
Inventor 邓宇牛国旗张井泉仇大鹏李菁
Owner 邓宇
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