One-shaped pressure-adjustable patella external fixator

Abstract

The invention discloses a linear adjustable-pressure patellar external fixator (in two styles). The fixator (in style A) comprises a single unit and further comprises parts, such as a linear main beam, pressure-adjusting fixing members, a pressure-adjusting nut, an arc auxiliary beam, an auxiliary fixing member, a fixing pin, a fastening nut, and a set screw. In the fixator (in style B, see the specification), two ends of a linear main beam (1) are provided with pressure-adjusting fixing members (2), and an arc auxiliary beam (4), an auxiliary fixing member (5) and a fixing pin (6) are provided below the linear main beam. During using, a surgeon may set the fixator first according to movements of a patellar fracture of a patient; the common patellar fracture can be directly fixed without a surgery; if a comminuted patellar fracture is severe or a surgery is required, fixing may be performed after the surgery; the fixator is convenient and stable to set, is adjustable in a wide range, needs minimal invasion and frees pain caused by secondary surgery for the patient.

Description

technical field [0001] The patent of the present invention relates to a fixer for medical operation, which is mainly used for external fixation of patella fracture or comminuted fracture of human knee joint. Background technique [0002] At present, there are many fixation methods commonly used in the medical field for patellar fractures. The most common one is internal fixation with tension bands. 1. Fixation with steel wires for surgical operations. The process delays the timing of joint function exercise, and the knee joint adhesion function is often not in place due to the enlargement of the patella. The most intuitive disadvantage is that the patient will suffer from the pain caused by the second operation; 3. Some of the existing external fixators are cumbersome to install. The range of fixation and adjustment is limited, the exercise of joint function is hindered by the body of the fixator, and some of them are traumatic, which is rarely promoted in the medical field;...

AI Technical Summary

Problems solved by technology

[0002] At present, there are many fixation methods commonly used in the medical field for patellar fractures. The most common one is internal fixation with tension bands. 1. Fixation with steel wires for surgical operations. The process delays the timing of joint function exercise, and the knee joint adhesion function is often not in place due to the enlargement of the patella. The most intuitive disadvantage is that the patient will suffer from the pain caused by the second operation; 3. Some of the existing external fixators are cumbersome to install. The range of fixation and adjustment is limited, the exercise of joint function is hindered by the body of the fixator, and some of them are traumatic, which is rarely promoted in the medical field; 4. Conservative treatment of folk traditional Chinese medicine, using external fixation and banding method, advantage: no wound; disadvantage: difficulty in bone integration If it is in place, the stability is poor, it is difficult to protect, and the timing of joint exercise will be delayed, and the patella will increase and deform, which will affect the quality of joint function, and even more serious consequences such as compressive ulcers will inevitably occur.

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