CN2320211Y

CN2320211Y - Internal fixator for dislocation of acromioclavicular joint

Info

Publication number: CN2320211Y
Application number: CN 97242391
Authority: CN
Inventors: 李振凡
Original assignee: Individual
Current assignee: Li Zhenfan
Priority date: 1997-12-31
Filing date: 1997-12-31
Publication date: 1999-05-26
Anticipated expiration: 2007-12-31

Abstract

The utility model provides an internal fixator for dislocation of acromioclavicular joints, which is composed of an arc steel plate body, an outer side hook and an inner side fixed claw, wherein, the arc steel plate traverses acromioclavicular joints, the outer side hook is hooked at the lower part of the shoulder peak, and the inner side fixed claw is fixed on the collarbone. The utility model is used for treating dislocation of acromioclavicular joints. The utility model has the advantages of simple and safe operation. The fixing section is in the cortical bone without joints fixation, joints can be firmly fixed without external fixation, shoulder joints are movable in early time, the functions of shoulder joints are quickly recovered, and success rate is high to avoid late complications, such as scapulohumeral periarthritis, traumatic arthritis, etc. The utility model is suitable for being widely used in clinical treatment.

Description

The acromioclavicular joint dislocation inner fixer

This utility model relates to a kind of medical apparatus and instruments, particularly a kind of fixed inner fixer of acromioclavicular joint that is used for.

Acromioclavicular joint dislocation is the common damage of shoulder, and the Therapeutic Method kind is more.Have through acromioclavicular joint and fix; As Kirschner wire, steel wire tension band, Kirschner wire add the steel wire tension band.Also have through between the clavicle processus coracoideus fixed; As the steel wire tension band, processus coracoideus transposition etc.The tractive that clavicle is made progress by sternocleidomastoid, scapula are subjected to the downward tractive of upper limb weight, make acromioclavicular joint produce shearing, the acromioclavicular joint dislocation os postclavicalis, and acromion is shifted up and down.The clavicle outer 1/3 that constitutes acromioclavicular joint is made of spongy bone, is flat, and acromion also is flat, so through the arthrodesis difficulty, easily loosening, postoperative causes subluxation of joint, coracoclavicular ligament can not heal, and removes internal fixation backward dislocation recurrence.Through arthrodesis further damage is caused in the joint, late period, concurrent traumatic arthritis had a strong impact on the curative effect in late period.Fixation with steel wire steel wire Yi Pilao fractures between the processus coracoideus clavicle, and the processus coracoideus transposition is the dynamic property reparation, and cost is bigger, and the fixing difficulty of processus coracoideus.

The purpose of this utility model provides a kind of science simple in structure, and good effect can effectively overcome the novel acromioclavicular joint dislocation inner fixer that is used for the treatment of acromioclavicular joint dislocation of above-mentioned defective.

The purpose of this utility model is achieved in that it by the curved plate body, and outside hook and inboard fixed claw are formed, and curved plate crosses acromioclavicular joint, and its outside hook hook is under acromion, and inboard fixed claw is fixed in clavicle.

This utility model adopts niti-shaped memorial alloy to make.

When using this utility model, curved plate crosses acromioclavicular joint, outside hook hook under acromion, the acromion of holding with a firm grip that under the driving of recovery of shape temperature, automatically resets, inboard fixed claw is hugged fixedly clavicle from the clavicle front and back.

Adopt this utility model to treat such disease, without arthrodesis, fixed position is at cortical bone, fixation, without external fixation, but the early ambulant shoulder joint, and it is fast that the postoperative shoulder joint function recovers, the acceptance rate height is avoided scapulohumeral periarthritis, late complications such as traumatic arthritis.

Below in conjunction with accompanying drawing in detail concrete structure of the present utility model is described in detail.

Fig. 1 is a structural representation of the present utility model.

User mode figure when Fig. 2 is used for the treatment of for this utility model.

As shown in the figure, this utility model is by curved plate body 2, and outside hook 3 and inboard fixed claw 1 are formed, and curved plate crosses acromioclavicular joint, and its outside hook 3 hooks are in acromion 4 times, and inboard fixed claw 1 is fixed in clavicle 5; This utility model adopts niti-shaped memorial alloy to make, and its objective is in order to make it have the geometry memory function under specified temp, wherein contains Ni50.8at%, Ti51.8at%.Design temperature is 5 ℃, and 37 ℃ of inner fixer recovery temperatures adopt hot rolled plate, and thickness is crossed 1.2mm, the warp cutting, thermal finalization, the memory temperature heat treatment, finishing process processing system forms, this utility model divides big (50mm), in 45 (mm), little (44mm) three kinds of specifications, about two kinds of models.Before the art according to the X-ray sheet inspection select the suitable types steel plate for use, before installing, this utility model places the sterilization frozen water earlier, with needle holder inboard fixed claw 1 is drawn to stretch and be expanded to greater than clavicle 5 respective fixation position diameters, after outside hook 3 is fixed in acromion 4, curved plate body 2 is pressed on clavicle 5, inboard fixed claw 1 is spent under the effect of sterile saline at body temperature or 37, encircles from horizontal reset and is fixed in clavicle 5.

Operation method: operation is carried out under brachial plexus anesthesial, and dorsal position is suffered from shoulder and slightly raised, and gets the inverted "L" shaped otch, and otch arises from acromion 4, goes to clavicle 5 1/3 places, China and foreign countries along clavicle 5 upper limbs and turns to down preceding.Cut skin, subcutaneous tissue is noted the protection cephalic vein between pectoralis major and triangular muscle; cut the triangular muscle fiber in the acromioclavicular joint top, appear acromioclavicular joint, detect acromioclavicular joint; embed influence if any soft tissue and reset and clear up slightly, cracked tissue such as intercalated disc, articular cartilage is removed.Cut the triangular muscle fibers along clavicle 5, triangular muscle opens, and it is outer 1/3 to appear processus coracoideus, coracoclavicular ligament and clavicle 5, detects the coracoclavicular ligament crack conditions, does to repair to sew up but do not tie a knot.Inner fixer outside hook 3 is inserted acromion 4 times, hook acromion 4, push clavicle 5 outer ends acromioclavicular joint is resetted, after steel plate compresses clavicle 5, heat with 37 ℃ of hot salt brines, inboard fixed claw 3 automatically resets and holds clavicle 5 tightly.In the coracoclavicular ligament of repairing down directly perceived, acromioclavicular ligament is set up jointly according to layered suture and to be knitted, and postoperative need not any external fixation.

Claims

1. acromioclavicular joint dislocation inner fixer is characterized in that: it is by the curved plate body, and outside hook and inboard fixed claw are formed, and curved plate crosses acromioclavicular joint, and its outside hook hook is under acromion, and inboard fixed claw is fixed in clavicle.

2. acromioclavicular joint dislocation inner fixer as claimed in claim 1 is characterized in that: it adopts niti-shaped memorial alloy to make.