Elastic intramedullary nail with functions of pressurizing and resisting rotation

Abstract

The invention relates to an elastic intramedullary nail with functions of pressurizing and resisting rotation and belongs to the technical field of medical instruments for the orthopedics department. According to the technical scheme, the elastic intramedullary nail used for the internal fixing of long bone metaphysis comminuted fracture is characterized in that the head of the intramedullary nail and the tail of the intramedullary nail respectively bend towards the same side of the middle of the intramedullary nail, the bending parts of the head of the intramedullary nail and the tail of the intramedullary nail and the middle of the intramedullary nail are located on the same plane, and grooves are respectively formed in intramedullary nail bodies on two sides of the bent arc shapes of the head of the intramedullary nail, the middle of the intramedullary nail and the tail of the intramedullary nail. The elastic intramedullary nail has the advantages that a traditional straight intramedullary nail is initiatively changed into the bent arc-shaped intramedullary nail, the intramedullary nail has the functions of elastic pressurizing and preventing transverse rotation when the intramedullary nail is used to perform internal fixing through a locking screw, new functions of the intramedullary nail in the internal fixing are provided, the internal fixing effect of the intramedullary nail is increased, fracture healing is accelerated, the pain of patients is reduced, a new powerful tool is provided for the treatment of the long bone fracture of the orthopedics department, and the intramedullary nail is worthy of popularization and use.

Description

technical field [0001] The invention relates to an elastic intramedullary nail for comminuted fractures of the metaphysis of long bones, belonging to the technical field of orthopedic medical devices. Background technique [0002] In orthopedic treatment, for comminuted metaphyseal fractures of long bones such as the distal femur, proximal tibia, and proximal humerus, clinicians often choose unilateral or bilateral plate fixation, but this method requires stripping most of the soft tissue, The trauma is large and the amount of bleeding is large, so it is often accompanied by complications such as infection, non-union, and malunion. Due to the concentrated stress of the steel plate, it is easy to loosen and even break, and then there will be angular deformity and rotational deformity caused by poor alignment. In addition to plate fixation, intramedullary nailing is also widely used in clinical treatment. Intramedullary nailing has its unique advantages in the treatment of sh...

AI Technical Summary

Problems solved by technology

However, traditional intramedullary nails have the following disadvantages: First, traditional intramedullary nails generally have to be driven into the joint, which will destroy the integrity of the joint; Elastic compression can only be achieved by placing more dynamic screws, and the placement of dynamic screws also increases the extent of trauma to a certain extent, which is not conducive to the early recovery of patients; For patients with comminuted metaphyseal fractures, traditional intramedullary nails have no reliable support due to metaphyseal comminuted, and traditional screws alone cannot achieve strong fixation, which greatly limits their wide application

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