Femur neck side hole drainage pressure reducing hollow tension screw system

Abstract

The invention relates to a femur neck side hole drainage pressure reducing hollow tension screw system, in particular to a system used for femur neck fracture and femoral head osteonecrosis, and belongs to the field of medical appliances. The femur neck side hole drainage pressure reducing hollow tension screw system is applicable to bone surgeries, and comprises a femur neck side hole drainage pressure reducing hollow tension screw (1), a single-head external connection negative pressure drainage device (2) and a multi-head external connection negative pressure drainage device (3), wherein drainage pressure reducing side holes (11) are uniformly distributed in the screw body part of the femur neck side hole drainage pressure reducing hollow tension screw (1) and are communicated with a screw body hollow tubular structure (10); a threaded hole (9) formed inside the right side of the screw tail of the femur neck side hole drainage pressure reducing hollow tension screw can be matched with external joint screw threads (12) of the single-head external connection negative pressure drainage device (2); and the external connection negative pressure drainage device is realized.

Description

Technical field [0001] The invention relates to a hollow lag screw system for drainage and decompression of a femoral neck side hole, in particular to femoral neck fractures and femoral head necrosis, belongs to the field of medical instruments and is suitable for orthopedic operations. Background technique [0002] Femoral neck fractures can occur in all age groups, but it is most common in the elderly over 50 years old, and there are more women than men. Because it often occurs on the basis of osteoporosis, traumatic violence can be less severe. And young and middle-aged femoral neck fractures are often caused by greater violence. Femoral neck fractures have high disability and mortality rates, and have become one of the main threats leading to the decline in the quality of life or death of the elderly. According to the anatomical location: Many authors have divided femoral neck fractures into three types according to the anatomical location of the fracture: subhead type, tra...

AI Technical Summary

Problems solved by technology

For the multi-screw internal fixation of femoral neck fractures in the joint capsule, the existing screws and technology can only solve the stability problem of the broken end of the fracture, but for the increase of intracapsular and intramedullary pressure of the femoral neck fracture and the resulting postoperative The problem of femoral head necrosis cannot be solved well, and joint capsulotomy and decompression or closed intramedullary decompression are required

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