Clavicle intramedullary nail and method for using same

Abstract

The invention discloses a clavicle intramedullary nail. The clavicle intramedullary nail comprises a strip-shaped cylindrical body. One end of the body is bent to form a hook-shaped structure, and a radial-direction protrusion is arranged at the other end of the body; the body is used for being inserted in through holes of parts to be connected, the hook-shaped structure is used for hooking a hole wall on an opening at one end of one corresponding through hole, and the radial-direction protrusion is used for clamping the other end of each through hole and ensuring that the body can not fall out of the through hole from the hook-shaped structure. The clavicle intramedullary nail has the advantages of being capable of being used for minimally invasive surgery, overcoming the defects that an ordinary intramedullary fixator is poor in stability, resistant to rotation and axially unstable, being capable of being prevented from drifting or falling off and effectively reducing stress concentration and shielding effect, and ensuring that when the nail is taken out, only local anesthesia is needed.

Description

technical field [0001] The invention relates to a bone fixation device, in particular to a clavicular intramedullary nail and a method for using the same. Background technique [0002] The clavicle is an "S"-shaped frame between the manubrium sternum and the acromion, and is the only bony support connecting the upper limbs to the trunk. The clavicle is located under the skin and is superficial. It is prone to fracture when subjected to external force. The incidence of clavicle fracture accounts for 5% to 10% of all fractures in the whole body, and most of them occur in children and young adults. Clavicle fractures often occur in the middle part of the clavicle, and are mostly transverse or oblique fractures. The inner end is often displaced upwards and backwards due to the pull of the sternocleidomastoid muscle, and the outer end is displaced inwards and downwards due to the gravity of the upper limbs. For the angulation and dislocation shortening deformity with the convex ...

AI Technical Summary

Problems solved by technology

The use of steel plate fixation requires a large incision, which affects the appearance of postoperative scar hyperplasia, and requires peeling off a large area of ​​periosteum, resulting in a high rate of nonunion. There is also stress concentration in the steel plate, which can easily lead to fixation failure and stress shielding, making it easy to take out the internal fixation. The disadvantage of refracture, in addition to the high infection rate of plate fixation

Although the use of intramedullary nailing makes the surgical wound smaller, the stability of intramedullary nailing is insufficient, and fractures are prone to redisplacement, and there are phenomena such as drifting of built-in objects, withdrawal of needles, and broken needles, which affect the healing of the clavicle. The intramedullary needle moves into the lung

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