Titanium-nickel memory alloy hook toothed nail for treating acromioclavicular joint dislocation and use method thereof

Abstract

The invention discloses a titanium-nickel memory alloy hook toothed nail for treating acromioclavicular joint dislocation and a use method thereof. The titanium-nickel memory alloy hook toothed nail comprises a hook toothed nail made of a titanium-nickel alloy and a hollow push rod, wherein the hook toothed nail comprises a guide post; a plurality of hook claws are arranged on one end of the guidepost; the other end of the guide post is connected with a plurality of leading wires; the hollow push rod is arranged at the end, with the leading wires, of the guide post and is arranged outside theleading wires in a sleeving manner; a limiting member is arranged on the ends, away from the guide post, of the leading wires; a binding post having a diameter smaller than that of the guide post isarranged on the end, away from the hook claws, of the guide post; the leading wires are connected to the binding post; and the hollow push rod is arranged on the binding post in a matching and sleeving manner. According to the invention, the hook claws are firstly straightened in frozen brine at low temperature by utilizing the characteristics of the titanium-nickel memory alloy, and then the hookclaws are pushed into a bone hole of a condyle through the hollow push rod and passes through the bone hole of the condyle, thereby eliminating a series of auxiliary operations; and the guide post and the hollow push rod cooperates to form a straight cylinder, so that a jack operation is very smooth and convenient, and a situation that the hook toothed nail is clamped and pressed is unlikely.

Description

technical field [0001] The invention belongs to the field of medical tools, and in particular relates to a titanium-nickel memory alloy hook-tooth nail for treating acromioclavicular joint dislocation and a use method thereof. Background technique [0002] The acromioclavicular joint is the fulcrum of upper limb movement, occupies an important position in the function and dynamics of the shoulder girdle, is one of the indispensable joints for upper limb abduction and lifting, and participates in the forward flexion and backward extension of the shoulder joint. Since the acromioclavicular joint is located under the skin, it is easy to see the local elevation after dislocation, and the bilateral comparison is obvious, and there may be local pain, swelling and tenderness; Limited, the local pain intensifies, a depression can be felt at the acromioclavicular joint during inspection, and the acromioclavicular joint can be felt loose. According to the degree of injury and ligamen...

AI Technical Summary

Problems solved by technology

However, because the traction wire 300 is tied to the micro-steel plate 400 with the Endobutton belt loop, it is very difficult to pass through the bone hole, and it is easy to be skewed and get stuck, especially after difficultly passing through the coracoid 4 bone hole. Realize the flipping of the Endobutton with tab micro-steel plate 400 (eg Figure 7 , the coracoid process is in the patient's body, so it is necessary to use tweezers to enter the patient's body from the outside of the coracoid process 4 to assist in turning the Endobutton micro-steel plate 400 with loops under the coracoid process 4 to a horizontal position. The effect after turning is as follows Figure 8 ), so the actual operation is still not simple enough, which brings great pain to the patients

In extreme cases, the microplate 400 with the loop of the Endobutton gets stuck in the soft tissue between the clavicle 3 and the coracoid process 4, which leads to the failure of the operation.

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