Internal fracture fixator

A technology of internal fixator and fixation piece, which is applied in the field of medical devices, can solve the problems of complex operation and serious trauma, and achieve the effect of simple operation, small trauma and reduced complications

Active Publication Date: 2013-03-06
SHANGHAI SIXTH PEOPLES HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the traditional internal fixator, whether it is a steel plate or an intramedullary nail, is complicated to operate, and the trauma is serious. Moreover, there are few re

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0029] refer to Figure 1~Figure 3 , The fracture internal fixator of the present invention includes a straight connecting rod 1 , a fastening nut 2 and a locking screw 3 .

[0030] Wherein, the fastening nut 2 includes a cylinder 21 and fixed pieces 22 symmetrically arranged on both sides of the outer wall of the cylinder 21 , and the fixed pieces 22 are provided with screw holes 23 . In the present invention, the number of fastening nuts 2 is three, wherein one fastening nut is provided with two screw holes on each fixed piece, and each other fastening nut is provided with one screw hole on each fixed piece. The cylinder 21 is used to insert the two ends of the connecting rod 1,

[0031] refer to figure 1 , the fracture internal fixator of the present invention, when in use, first reset the fracture by manipulation, and simply fix it, cut a small incision on the upper and lower sides of the fracture, insert the connecting rod 1 above the bone and below the soft tissue, and...

Embodiment 2

[0038] On the basis of Example 1, if the bone is relatively thick, multiple internal fixators according to the present invention can be used to fix according to the method described in Example 1, or two or more can be set on the fastening nut 2 cylinder, such as Figure 4 As shown, in this way, without increasing the number of fastening nuts, the number of connecting rods 1 can be increased to achieve a better fixing effect; The angle is 90-150 degrees, or only one fixing piece 22 is set on each fastening nut 2 .

[0039] When the fastening nut 1 is provided with two cylinders 21, an intermediate fixing piece can also be provided between the two cylinders 21, and the two cylinders are connected by the middle fixing piece, and the middle fixing piece can also be provided with a screw hole .

[0040] In addition, in the above embodiments, the locking screw 3 preferably has a double-threaded structure, one end thread is engaged with the internal thread of the screw hole 23, and...

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Abstract

The invention relates to an internal fracture fixator which comprises locking screws, a connecting rod and fastening nuts. The traditional operational process of internal fracture fixation is changed by the internal fracture fixator, surgical operation is simplified, the direct contact area proportion of the internal fracture fixator with skeletons of four limbs of a patient is low, and the internal fracture fixator is free of contact with the skeleton at a fracture position of the patient, so that interference on the fracture position and interference on blood supply to bones below the internal fracture fixator are avoided, and the internal fracture fixator is beneficial to fracture healing; a system adopts a corner fixation mode, a fixation effect is good, and probable pulling-out and loosening of the screws and the like are avoided; minimally invasive surgery can be carried out via a subcutaneous tunnel, traumas are small, bleeding is rare, recovery is fast, and complications can be greatly reduced; and the fracture position can be pressurized again after the patient is subjected to fracture fixation, so that fixation is stable, and fracture healing is facilitated.

Description

technical field [0001] The invention relates to a medical device, in particular to a fixer for treating limb fractures. Background technique [0002] Fractures of extremities are the most common bone injuries in daily life, especially with the development of the transportation industry and the construction industry, there is an increasing trend. Therefore, how to fix extremity fractures more easily and more firmly, and how to minimize the impact on the blood supply of the fracture so as to promote fracture healing have always been the focus and difficulty of orthopedic surgeons. When a bone breaks, the broken bones need to be held together for proper healing, otherwise, poor healing such as misalignment can easily occur. [0003] The most conventional fixation method is to use a fracture fixator. The external fixator is to perform surgery to reduce the fracture and install an external bone fixator outside the limb. Generally, the bone external fixator is composed of a chuck...

Claims

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Application Information

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IPC IPC(8): A61B17/68
Inventor 张长青于晓巍高悠水
Owner SHANGHAI SIXTH PEOPLES HOSPITAL
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