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Parallel external fixator and application method thereof

An external fixator and parallel technology, which is applied in the field of bone treatment devices, can solve problems such as soft tissue and neurovascular secondary injuries

Inactive Publication Date: 2017-06-20
SHANGHAI LAIYING MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a parallel type external fixator and its application method. The parallel type external fixator is designed as a double coordinate system, and any point deformity in the frame can be located by six deformity parameters. Accurately define all attributes of the deformity of the mobile bone end relative to the reference system, thereby overcoming the fact that the existing Taylor space external fixation bracket needs more time due to the anatomical and physiological characteristics of the limbs and the actual complex characteristics of trauma and fractures in actual clinical work. Good alignment of the bone end can only be obtained after repeated reductions, which will cause the risk of secondary damage to soft tissues and neurovascular defects

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  • Parallel external fixator and application method thereof
  • Parallel external fixator and application method thereof

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Embodiment 1

[0134] A parallel-type external fixator in this embodiment includes a frame part and a supporting computer software part.

[0135] The frame part of this parallel type external fixator is composed of a reference ring 1-1, a moving ring 1-3 and six driving rods 1-2, and the reference ring 1-1 and the moving ring 1-3 are connected by a universal joint The device 2-1 is connected with six driving rods 1-2, and the six driving rods 1-2 connecting the moving ring 1-3 and the reference ring 1-1 are arranged in parallel, and the mathematical model of the frame part is as follows figure 1 Example shown. The inner diameter of the reference ring 1-1 is divided into eight types: 90mm, 110mm, 130mm, 150mm, 170mm, 190mm, 210mm and 230mm; the inner diameter of the moving ring 1-3 is also divided into eight types corresponding to the inner diameter of the reference ring 1-1: 90mm, 110mm, 130mm, 150mm, 170mm, 190mm, 210mm and 230mm. The structure of the driving rod 1-2 is as figure 2 In t...

Embodiment 2

[0139] See Figure 3, Figure 4 , Fig. 5 and Fig. 6, the present embodiment provides a kind of application method of parallel type external fixator, it realizes based on a kind of parallel type external fixator of embodiment 1, specific steps are as follows:

[0140] The first step is to install a parallel external fixator on fracture patients who need surgery:

[0141] (1.1) First, select the reference ring 1-1 and the moving ring 1-3 according to the body shape of the fracture patient, and determine the driving rod with the corresponding rod length according to the selected reference ring 1-1 and the moving ring 1-3;

[0142] (1.2) Design the bone segment deformity model. In the bone segment deformity model, the fracture segment is divided into a reference bone segment and a moving bone segment. That is, the doctor selects the proximal or distal end of the fracture reference fracture as the reference bone segment, and the other end is To move the bone segment, the selection of...

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Abstract

The invention discloses a parallel external fixator and an application method thereof, and relates to bone treating devices or methods. The external fixator comprises a frame part and a matching computer software part, wherein the frame part is composed of a reference ring, a shift ring and six drive rod. The application method comprises the steps that the parallel external fixator is installed; standard frontal and lateral X-ray photographs are shot; a local coordinate system of the parallel external fixator and a global coordinate system of the parallel external fixator are built; malformation parameters and installation parameters are acquired by measurement; the lengths of the six drive rods of the parallel external fixator is obtained; precise fracture reduction is achieved through treatment days given by a doctor. The parallel external fixator and the application method thereof overcome the defect in the prior art that good extremities abutting needs multiple repeated reduction which can increase the risk of secondary damages to soft tissues and nerves and blood vessels.

Description

technical field [0001] The technical proposal of the present invention relates to a device or method for treating bone, in particular to a parallel type external fixator for bone and its application method. Background technique [0002] In fracture trauma, closed reduction of fractures is a great challenge to orthopedic surgeons. Even experienced surgeons can hardly achieve complete closed reduction of patients. Therefore, in the treatment of closed reduction of fractures, extraskeletal A fixer was developed. [0003] In the prior art, the bone external fixator has a Taylor space external fixation bracket, which is composed of two full rings or partial rings and assembled with six telescopic support rods. When it works, the change of the length of a single support rod will cause a displacement of one platform in the three-dimensional plane relative to the other platform. For this reason, the change of the pose of one platform relative to the other must be guided by the comp...

Claims

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Application Information

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IPC IPC(8): A61B17/66G06F3/0482G06F19/00
CPCA61B17/66A61B17/6425A61B17/645A61B2017/564G06F3/0482G16H50/50
Inventor 孙昊魏梦婷张习帅张晓萌任亚歧陈晓辉
Owner SHANGHAI LAIYING MEDICAL TECH CO LTD
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