External fixator for limb fractures

An external fixator and fixator technology, applied in the field of medical devices, can solve the problems of single function, difficult nursing and complicated structure of the ring external fixator system, and achieve the effect of reducing surgical injury, reducing operation time, and simple operation

Active Publication Date: 2020-02-21
张浩然
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem of the functional limitations of the existing unilateral external fixator system in orthopedic surgery, and also solve the problems of the ri...

Method used

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  • External fixator for limb fractures
  • External fixator for limb fractures
  • External fixator for limb fractures

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Experimental program
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specific Embodiment approach 1

[0029] Specific implementation mode one: combine Figure 1-Figure 5 Describe this embodiment, an external fixator for extremity fractures in this embodiment, including two or more reduction fixators 1, four or more bone pins 2, two or more telescopic rods 3, two or more The spicule fixing rod 6, four or more curved rod pillars 7 and a plurality of auxiliary reset rods 8 are used in conjunction, the bone spicule fixing rod 6 is installed on the reset fixer 1, and there is a fixing hole 6 at both ends of the bone spicule fixing rod 6 -1, the fixing hole 6-1 is used to place and fix the bone needle 2, a curved rod support 7 is respectively installed on the left and right sides of the reset fixer 1, and the two telescopic rods 3 are respectively connected to the two adjacent reset fixer 1 The bent rod pillar 7 adjusts the relative position of two adjacent reset fixers 1 by adjusting the telescopic rod 3 .

[0030] The reset fixer 1 includes a reset ball 4, a top wire 9 and a fixi...

specific Embodiment approach 2

[0035] Specific implementation mode two: combination Figure 1-Figure 5 Describe this embodiment, a kind of external fixator for extremity fracture of this embodiment, described installation steps are as follows:

[0036]Step 1: After the lower extremity fracture, due to the external force during the injury and the effect of muscle stretching after the injury, the two fracture ends have different degrees of displacement. Physicians can determine the proper insertion position of the bone needle 2 through the preoperative imaging examination and the general fracture movement orientation. First, the two spicules 2 are inserted into the spicule fixing rod 6, and at this time, the spicules 2 and the spicule fixing rod 6 are not locked. Afterwards, the spicules 2 are drilled into the two fracture segments to be fixed. During this process, the spicule fixing rod 6, which is relatively unfixed with the spicules 2, plays a role in determining the distance between the two spicules 2. ...

specific Embodiment approach 3

[0041] Specific implementation mode three: combination Figure 1-Figure 5 Describe this embodiment, a kind of external fixator for extremity fracture of this embodiment, described traction, reduction and fixation steps are as follows:

[0042] Step 1: After completing the installation according to the description of the second embodiment, there are still various forms of displacement at the two fracture ends. Now by rotating the internally threaded rod 3-3 of the telescopic rod, the telescopic rod 3 is extended, and the two fracture ends are retracted. The experience of multiple operations tells us that after the muscle is stretched to a certain length L1, it will not produce more deformation. At this time, if the muscle length is forcibly extended, it will cause muscle damage. However, if the length L1 is maintained for a few minutes at the point of maximum deformation and then increased, the retraction can be extended to the length L2 without damaging the muscle. Therefore...

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Abstract

The invention relates to an external fixator for limb fractures, and belongs to the field of medical apparatuses. The external fixator comprises reducing fixators, bone needles, telescopic rods, boneneedle fixing rods, bend rod pillars and a jack screw, wherein the bone needle fixing rods are mounted on the reducing fixators; fixing holes are respectively formed in two ends of each of the bone needle fixing rods and are used for allowing the bone needles to be placed and fixed; the bend rod pillars are respectively mounted on the left sides and the right sides of the reducing fixators; the two telescopic rods are respectively connected with the bend rod pillars on the two adjacent reducing fixators; and the telescopic rods are regulated to regulate the relative position of the two adjacent reducing fixators. The external fixator solves the problem that a conventional unilateral external fixation frame system is limited in functions when being used for an orthopedic surgery, and besides, also solves the problems that an annular external fixation frame system is single in functions, complex in structure, high in price and difficult for nursing. Further, the invention provides an orthopaedics unilateral external fixation device which is complete in functions, low in price and easy tor nursing.

Description

technical field [0001] The invention relates to an external fixation device for limb fractures, belonging to the field of medical instruments. Background technique [0002] Existing external fixation devices for limb fracture fixation are various, including unilateral external fixation devices, annular external fixators and the like. The operation process of long bone fractures often includes three stages of "traction, reduction, and fixation". By distracting the two fracture ends, the reduction can be performed more easily, and then stabilized by fixers. The following three types are used for the fixation of limb fractures. The advantages and disadvantages of fixed devices are as follows: [0003] A kind of unilateral external fixator system commonly used in clinic now, it is made up of device such as bone needle, connecting rod, cross bar fixing clip, needle rod fixing clip, rod fixing clip, curved rod pillar. The positions of each fixing clip can be changed at will befo...

Claims

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Application Information

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IPC IPC(8): A61B17/66
CPCA61B17/66A61B2017/564
Inventor 张浩然康思淼楚鹏陈俊波周忠诚
Owner 张浩然
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