Specimen fixation apparatus of femur neck test instrument

Abstract

The invention discloses a specimen fixation apparatus of a femur neck test instrument. The apparatus comprises a body, wherein the body is mainly formed by a fixation member and a movement member, the movement member is closes to the fixation part or separates from the fixation part in a fixed range, and the fixation member surface opposite to the movement member forms a clamping part for clamping a specimen. The apparatus has the following beneficial effects that: the middle-upper segment specimen of the femur can be effectively fixed during a femur neck biomechanical test, and corpus femoris fracture or the whole deformation shift of the femur specimen under the femur specimen tuberositas can be avoided.

Description

technical field [0001] The invention relates to a specimen fixture, in particular to a specimen fixing device of a femoral neck testing instrument. Background technique [0002] The femur is the largest long tubular bone in the human body, and the femoral neck is the bony tissue that connects the femoral tuberosity and the femoral head. As people grow older, femoral neck fractures may be caused by osteoporosis, degeneration of the hip muscles, unresponsiveness, or severe trauma, that is, femoral neck fractures, or rheumatism, blood disease, diving sickness, burns, etc. Diseases cause femoral head necrosis, usually femoral neck fracture or femoral head necrosis. The conventional treatment methods include internal fixation and artificial joint replacement. Validation of the effectiveness of such treatments requires biomechanical testing of the femoral neck. [0003] The existing method for biomechanical testing of the femoral neck is to fix the femoral specimen vertically on...

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Problems solved by technology

[0003] The existing method for biomechanical testing of the femoral neck is to fix the femoral specimen vertically on the base of the mechanical tester, and then apply force to the femoral head after the reinforcement of the treatment method to be verified, so as to observe the effectiveness of the treatment method. The fixation method of the femur specimen is generally to fix the lower part of the femur specimen, and at the same time reduce the shaking of the femur by pulling the femoral body. This method cannot effectively fix the femur specimen, and sometimes the force applied by the testing instrument is not effective When it is within the range, the femoral body under the trochanter of the femoral specimen will be broken or the overall deformation and displacement of the femoral specimen will make it impossible to continue to apply force, and the predetermined test goal cannot be achieved.

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