Acetabulum simulating clamping device and production method thereof

Abstract

The present invention provides an acetabulum simulating clamping device and a production method thereof. The production method of the acetabulum simulating clamping device comprises: fixing a caput femoris to be subjected to a mechanical experiment in a sealed container; respectively sleeving films on the surface of the caput femoris and the inner surface of the container; filling the container with polymethylmethacrylate, and curing at a room temperature; and separating the cured finished product from the container and the caput femoris. According to the present invention, the acetabulum simulating clamping device is prepared by using polymethylmethacrylate, the experiment is performed in vitro, the specimens have the unified density and the unified mechanical property, the individual difference is eliminated, and the experimental results are comparable, such that the base experiment can be performed so as to guide the clinical work.

Description

technical field [0001] The invention belongs to the field of materials for biomechanical experiments, and in particular relates to an acetabulum simulation jig prepared by using polymethyl methacrylate for biomechanical compression experiments of lower extremity bones and a manufacturing method thereof. Background technique [0002] At present, the incidence of bone and joint injuries of the lower extremities remains high, seriously affecting people's daily activities and quality of life. Among them, with the growth of the elderly population, the prevalence of the bad habit of drinking, and the increase in the clinical use of glucocorticoids, the incidence of femoral head necrosis has increased significantly, which has brought a heavy burden to individuals, families, and society. At present, the mechanism of lower extremity bone and joint injuries, including femoral head necrosis, has not been clarified, resulting in incomplete targeted prevention and rehabilitation measures...

AI Technical Summary

Problems solved by technology

[0004] In consideration of better performing mechanical experiments and simulating the force of the human body, it is obviously inappropriate to conduct mechanical tests directly on the femoral head. On the one hand, it is difficult to have a good fulcrum to fix the femur stably; Human body activity is very different

[0005] In the past, some researchers tried to remove the acetabulum and femur as a whole without destroying the structure between the acetabulum and the femur, and then performed mechanical experiments on the lower limbs. However, such specimens are rare and difficult to meet the needs of large-scale experiments; The acetabular cup used in surgery is used as a jig for mechanical experiments. On the one hand, this kind of equipment is relatively expensive. More importantly, there are individual differences in each person's femur. It is impossible to be completely consistent in anatomical structure, so there are forces. difference

In clinical practice, some "destructive" experiments cannot be applied to patients

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