An external fixator for fractures of extremities

An external fixator and fixator technology, applied in the field of medical devices, can solve the problems of ring-shaped external fixator system such as single function, complex structure, and high price, and achieve the effects of reducing surgical injuries, simple operation, and low production cost

Active Publication Date: 2022-06-07
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 ring-shaped external fixator system with single function, complex structure, high price and difficult care. Further provide a fully functional, inexpensive and easy-care orthopedic unilateral external fixation device

Method used

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  • An external fixator for fractures of extremities
  • An external fixator for fractures of extremities
  • An external fixator for fractures of extremities

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Experimental program
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specific Embodiment approach 1

[0029] Embodiment 1: Combining Figure 1-Figure 5 This embodiment is described. An external fixator for limb fractures in this embodiment includes two or more reduction fixators 1, four or more bone pins 2, two or more telescopic rods 3, two or more The bone needle fixing rod 6, four or more curved rod supports 7 and a plurality of auxiliary reduction rods 8 are used together. The bone needle fixing rod 6 is installed on the reduction fixture 1, and the two ends of the bone needle fixing rod 6 each have a fixing hole 6. -1, the fixing hole 6-1 is used to place and fix the bone pin 2, a curved rod strut 7 is installed on the left and right sides of the reduction fixture 1, and the two telescopic rods 3 are connected to two adjacent reduction fixtures 1 respectively. The bending rod support 7 adjusts the relative position of the two adjacent reset fixtures 1 by adjusting the telescopic rod 3 .

[0030] The reset fixer 1 includes a reset ball 4, a top wire 9 and a fixing clip 5....

specific Embodiment approach 2

[0035] Specific implementation mode 2: Combining Figure 1-Figure 5 Describe this embodiment, an external fixator for limb fractures of this embodiment, the installation steps are as follows:

[0036]Step 1: After the fracture of the lower extremity, the two fracture ends have different degrees of displacement due to the external force during the injury and the pulling of the muscle after the injury. The physician can determine the appropriate needle insertion position of the bone needle 2 through the preoperative imaging examination and the general fracture movement orientation. First, insert the two bone pins 2 into the bone pin fixation rod 6 , and at this time, there is no locking between the bone pins 2 and the bone pin fixation rod 6 . After that, the bone needle 2 is drilled into the two fracture segments to be fixed. During this process, the bone needle fixing rod 6 that is not fixed relative to the bone needle 2 plays a role in determining the distance between the tw...

specific Embodiment approach 3

[0041] Specific implementation three: combination Figure 1-Figure 5 Describe this embodiment, an external fixator for limb fractures of this embodiment, and the steps of traction, reduction and fixation are as follows:

[0042] Step 1: After the installation is completed according to the description of the second embodiment, there are still various forms of displacement of the two fracture ends at this time. At this time, by rotating the inner thread rod 3-3 of the telescopic rod, the telescopic rod 3 is extended, and the two fracture ends are retracted. The experience of multiple surgeries tells us that after the muscle is elongated to a certain length L1, there will be no more deformation. At this time, if the length of the muscle is forcibly extended, it will lead to muscle damage. However, if the length L1 is maintained for a few minutes at the maximum deformation, and then the force is increased, the retraction can be extended to the length L2 without damaging the muscl...

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Abstract

An external fixation device for fractures of extremities, belonging to the field of medical equipment, the invention includes a reduction fixer, a bone needle, a telescopic rod, a bone needle fixation rod, a curved rod pillar and a top wire, and the bone spicule fixation rod is installed on the reduction fixer On the top, there is a fixing hole at both ends of the bone needle fixing rod. The fixing holes are used to place and fix the bone needle. A curved rod pillar is respectively installed on the left and right sides of the reset fixer, and the two telescopic rods are respectively connected to two adjacent reset fixing rods. The bent rod pillar on the device can adjust the relative position of two adjacent reset fixers by adjusting the telescopic rod. The present invention solves the problem of the limited function of the existing unilateral external fixator system in orthopedic surgery, and also solves the problems of single function, complex structure, high price and difficult nursing care of the annular external fixator system, and further provides a A functional, inexpensive, and easy-care orthopedic unilateral external fixation device.

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 device, annular external fixator and so on. The surgical process of long bone fractures often includes three stages of "distraction, reduction and fixation". By retracting the two fracture ends, the reduction can be more easily carried out, and then it can be stably fixed with a fixator. The fixed device, its advantages and disadvantages are as follows: [0003] A unilateral external fixator system that is commonly used in clinical practice is composed of bone pins, connecting rods, transverse rod fixing clips, needle rod fixing clips, rod rod fixing clips, curved rod struts and other devices. Each fixed clip can be freely changed in position before locking, and has great mobility. The fixa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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