A tapered memory alloy breastbone fixer

A technology of memory alloy and memory alloy wire, which is applied in the field of sternum fixer and medical equipment, can solve the problems such as difficulty in fixing the sternum, achieve the effect of not being easy to rotate and shift, less contact area, and increasing the strength and stability of the back arch

Pending Publication Date: 2017-09-15
LANZHOU SEEMINE SMA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that irregular wounds at the sternum are difficult to fix, the present invention provides a tapered memory alloy sternum fixer

Method used

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  • A tapered memory alloy breastbone fixer
  • A tapered memory alloy breastbone fixer
  • A tapered memory alloy breastbone fixer

Examples

Experimental program
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Embodiment Construction

[0031] Such as Figure 1-3 As shown in the figure, a tapered memory alloy sternum fixer is made of a double beam formed by folding both ends of a memory alloy wire in equal alignment. It includes two open annular structures, one large and one small, which are parallel to each other. The top surface of the two open annular structures is an arched back with a narrow upper part and a wider lower part. Among them, the small open annular structure 3 is formed by two short encircling arms bent inward towards each other. , the ring structure 2 with a large opening is formed by two long encircling arms bent towards each other and inward. The ends of the embracing arms located at the openings in the two open ring structures are bent inward. Among the four encircling arms, the tops of two adjacent encircling arms are sequentially connected by arched arm single beam 1 to form an arched back with a narrow top and a wide bottom.

[0032] Among them, the four embracing arms are formed by ...

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Abstract

The invention provides a tapered memory alloy breastbone fixer comprising a large split ring structure and a small split ring structure which are parallel to each other. The top surfaces of the two split ring structures are arching surfaces with tops being narrow and the bottoms being wide; the small split ring structure is formed by bending two short embracing arms inward in opposite directions and the large split ring structure is formed by bending two long embracing arms inward in opposite directions; the top ends of every two adjacent embracing arms in the four embracing arms are connected via a arching arm single beam to form an arching surface with the top being narrow and the bottom being wide. The tapered memory alloy breastbone fixer with the large split ring structure and the small split ring structure which are parallel to each other is formed from one memory alloy wire; a tapered plane formed by the arching arm single beams are in longitudinal and transverse space connection with the two split ring structures; the tapered memory alloy breastbone fixer is suitable for patients with irregular wounds, is great in embracing force, is capable of preventing rotation and shifting of a fracture end, is small in foreign matter feel after being installed, is safe and reliable and is convenient to dismount.

Description

technical field [0001] The invention belongs to medical equipment and relates to a sternum fixer, in particular to a cone-shaped memory alloy sternum fixer. Background technique [0002] In recent years, sternal fractures have been caused by traffic accidents, falls and other reasons. Sternal fractures are relatively serious chest injuries. Fractures cause the chest wall to lose support and soften, causing abnormal breathing and mediastinal oscillations, which seriously affect the patient's respiratory and circulatory functions and are life-threatening. Fixers such as steel wire binding, Kirschner wire fixation, steel plate fixation and synthetic resin fixation are generally used in thoracic surgery at present. During thoracic surgery, due to the need for patient treatment, it is sometimes necessary to incise the sternum along the midline, and then bind the sternum with stainless steel wire or fix it with Kirschner wires after the operation is completed. When fixing, punch ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/68B21F1/00B21F11/00B23P15/00A61L31/14
CPCA61L31/14A61B17/68B21F1/00B21F11/00B23P15/00A61B2017/564A61B2017/00867A61L2400/16
Inventor 孙宝辉马悦辉李景元王维强聂永胜闫鹏伟杨喜东
Owner LANZHOU SEEMINE SMA CO LTD
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