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Steel wire guiding device for bone fragment fixation of femoral shaft fracture

A technology for guiding devices and fractured bones, applied in the direction of fixators, internal fixators, internal bone synthesis, etc., to achieve the effects of avoiding damage, reducing soft tissue damage, and reducing resistance

Inactive Publication Date: 2016-10-05
SHANDONG PROVINCIAL HOSPITAL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a steel wire guide for femoral shaft fracture bone fragment fixation, which can solve the problem of using steel wires or sutures to close, reduce, and bind the free bone fragments of the femur when it is applied to the fixation of free bone fragments in femoral shaft fractures.

Method used

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  • Steel wire guiding device for bone fragment fixation of femoral shaft fracture
  • Steel wire guiding device for bone fragment fixation of femoral shaft fracture
  • Steel wire guiding device for bone fragment fixation of femoral shaft fracture

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Embodiment Construction

[0037] Such as Figure 1 to Figure 21 As shown, the present invention includes a front knuckle 1, a rear knuckle 2, a handle 3, a drive assembly 5 and a torsion spring 7, and the present invention will be described in detail below in conjunction with the accompanying drawings.

[0038] Such as Figure 21 , Figure 22 As shown, the front knuckle 1 is a metal piece with thick middle ends and pointed ends. The middle part of the front knuckle is cylindrical, and an inclined plane 11 is arranged on the top of the front knuckle. The setting of the inclined plane makes the top of the front knuckle form a cone shape. Make a rounded corner transition 12 at the intersection of the bevel and the front knuckle. A chute 28 is provided on the inner cavity wall of the front knuckle, and the chute is used for slidingly installing the rack.

[0039] Such as image 3 , Figure 6 As shown, the rear phalanx 2 is a metal piece with two pointed ends and a thick middle. Symmetrical setting, ...

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Abstract

The steel wire guiding device for femoral shaft fracture bone fragment fixation involves minimally invasive internal fixation of femoral comminuted fracture, without cutting the broken end, and using steel wire or suture to bind and fix the femur and free bone fragments. It includes the front knuckle and the knuckle chain. The knuckle chain includes the hinged rear knuckle. There is a torsion spring between the rear knuckle and the front knuckle. The function of the torsion spring is to make the front knuckle move toward the axis of the femur. sideways. After closed intramedullary nailing for comminuted femur fractures, when the handle is pushed forward under fluoroscopy, the posterior phalanx moves joint by joint to form a surround on the femur and free bone fragments. Use the nucleus pulposus forceps to pinch the front end of the steel wire, and then pull it to the inside of the guiding device to pull the steel wire out of the guiding device; the steel wire can also be used to lead out the sutures. Knot the steel wire or suture to achieve closed reduction, binding and fixation of free bone fragments and femur. The device is easy to operate, and compared with open reduction and fixation, it can avoid destroying the blood supply of free bone fragments, significantly reduce the incision, and reduce operation and postoperative healing time.

Description

technical field [0001] The invention relates to the technical field of minimally invasive internal fixation of femur comminuted fractures, in particular to a steel wire guide device for closed reduction, binding and fixing of femur and free bone fragments by using steel wires or sutures. Background technique [0002] Due to the rapid development of transportation, construction and other industries, the incidence of femoral shaft comminuted fractures caused by high-energy injuries is very high. Closed reduction and interlocking intramedullary nailing is the gold standard for the treatment of such injuries. Comminuted fractures often have relatively large free bone fragments, and the reduction and fixation of free bone fragments are still very challenging problems. Large free bone fragments far away from the femoral shaft not only make the postoperative image unsightly, but also prolong the healing time; open reduction and fixation will not only destroy the blood supply of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/90A61B17/82
CPCA61B17/00234A61B17/82A61B17/8861A61B17/8894A61B2017/564A61B17/90
Inventor 王甫
Owner SHANDONG PROVINCIAL HOSPITAL
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