Adjustable mid-face bone tractor and design method thereof

A technology of bone distractor and design method, applied in the field of medical equipment

Inactive Publication Date: 2010-09-08
STOMATOLOGICAL HOSPITAL NO 4 ARMY SURGEON UNIV PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the single forward traction of the existing external fixation skull retractor is far from meeting the clinical needs.
However, there is no repo

Method used

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  • Adjustable mid-face bone tractor and design method thereof
  • Adjustable mid-face bone tractor and design method thereof
  • Adjustable mid-face bone tractor and design method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0016] Example 1: Such as figure 1 As shown, an adjustable mid-face bone traction device includes at least a bracket, a cranial fixation nail 4, a traction titanium nail 9, and a traction wire 10. Its characteristic is that its bracket is composed of an arc-shaped connecting frame with a slot 3 1 The adjustable connecting rod is fixedly connected by a detachable connecting piece; the middle part of the arc connecting frame 1 is fixedly connected with a bracket connecting block 2 through a detachable connecting piece; the arc connecting frame 1 can be fixed with one or more adjustable connecting rods as required A traction screw 6 and a traction nut 7 are connected to the adjustable connecting rod. The adjustable connecting rod is composed of a vertical connecting rod connecting block 5 and a vertical connecting rod 8 which are vertically fixedly connected. The vertical connecting rod connecting block 5 is fixedly connected at any position on the slot 3 of the arc-shaped connecti...

Example Embodiment

[0018] Example 2: Such as figure 2 As shown, the patient wants to pull the left maxillary fracture anteriorly and laterally, and rotate it laterally. The method of implementation is basically the same as that of Embodiment 1, except that two adjustable connecting rods are fixed on the arc-shaped connecting frame 1, that is, adjacent to the left side of the original adjustable connecting rod on the right side of the arc-shaped connecting frame 1. Fixing an adjustable connecting rod can fix one end of a traction titanium nail 9 on the lateral surface of the patient's left maxillary segment, and the other end of the traction titanium nail 9 is connected to the traction screw on the vertical connecting rod 8 through the traction wire 10 from between the jaws 6 You can first turn the traction nut 7 clockwise to pull the maxillary segment to the outside; one end of the second traction titanium nail is fixed on the patient's left maxillary segment near the fracture line, and the othe...

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PUM

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Abstract

The invention relates to a bone tractor, in particular to an adjustable mid-face bone tractor and a design method thereof. The bone tractor comprises a bracket, a cranial bone fixing pin, a traction titanium pin and a traction fiber at least. The invention is characterized in that the bracket is formed in a way that a cambered connection frame with clamping grooves is fixedly connected with adjustable connection rods by removable connection parts; the middle part of the cambered connection frame is fixedly connected with a bracket connection block by removable connection parts; and one or more than one adjustable connection rods can be fixed on the cambered connection frame as required, the adjustable connecting rods are connected with traction screw rods and traction nuts, and the traction of the mid-face bones of a patient is completed by the traction fiber. By adjusting the antero-posterior position of the traction fiber, the invention can meet the requirements for the multi-point, multi-direction and force-adjustable traction of the mid-face bones in such treatment, thereby achieving the optimum treatment effect of reconstructing the face.

Description

technical field [0001] The invention relates to a bone distractor, in particular to an adjustable midface bone distractor and a design method, belonging to the field of medical instruments. Background technique [0002] Skull-fixed mid-face bone distractors (Mid-face Distraction OsteogenesisDevices) are sometimes called externally fixed skull distractors. For patients with hypoplasia of the maxilla, the existing external fixation cranial distractors can only pull the part of the maxillary segment forward after Le Fort osteotomy, so as to restore their normal facial shape. For patients with depression after fracture of the mid-face bone, the broken bone segment can only be pulled forward to make it reset. For patients with hemifacial atrophy, only part of the mid-face bone fragments can be pulled forward to restore their facial shape as much as possible. However, most patients still need to pull some bone segments in the middle of the face to the side to restore the fullnes...

Claims

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Application Information

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IPC IPC(8): A61B17/62
Inventor 冯志宏耿建平赵铱民刘彦普赵晋龙
Owner STOMATOLOGICAL HOSPITAL NO 4 ARMY SURGEON UNIV PLA
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