Design method of bionic porous gradient artificial hip joint matrix
A design method and technology of hip joints, applied in the direction of hip joints, joint implants, joint implants, etc., can solve problems such as reducing bone stress levels, improve service life, avoid aseptic loosening complications, Aids in recovery
Active Publication Date: 2022-02-01
JILIN UNIV
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Problems solved by technology
After the implantation of the artificial hip joint, although the overall stress pattern of the femur has not been changed, the stress level of the bone around the artificial hip joint prosthesis at the proximal end of the femur is reduced, so that the activity of osteoclasts is stronger than that of osteoblasts, resulting in Osteolysis
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[0031] A method for designing a bionic porous gradient artificial hip joint matrix, comprising the steps of:
[0032] 1) According to the judgment of the doctor on the condition of the lesion area, the preliminary design of the artificial hip joint plan is carried out.
[0033] 2) Perform CT (such as SOMATOM Spirit of Siemens) or MRI examination on the patient according to the doctor's requirements, process and analyze the CT or MRI image data of the patient, and establish a three-dimensional model of the bone in the lesion area. The model of the lesion area without lesion was established based on past experience or the data of the patient's non-lesion area, and the mechanical analysis was carried out through finite element analysis software such as ANSYS. During the simulation, the constraint condition is that the distal end of the femur is set as a fixed end, and the load conditions are divided into two types: static and moving. In the static state, a concentrated force of ...
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Abstract
The invention relates to a design method of a bionic porous gradient artificial hip joint matrix. This method is based on three basic units of low-density area, medium-density area and high-density area, respectively constructing low-density area, medium-density area and high-density area with ordered porous gradient characteristics, and constructing an artificial hip joint through the combination of the three units The base part of the model. This method uses the bone joint matrix with porous gradient characteristics as a bionic template, and through the bionic design of the arrangement and spatial layout of three basic units with different structures and density characteristics, the mechanical properties of bone joints comparable to those before replacement can be obtained. The close bionic artificial hip joint matrix can effectively avoid the aseptic loosening complications in the previous artificial joint replacement, and improve the service life and reliability of the artificial joint.
Description
technical field [0001] The invention relates to the technical field of medical devices, in particular to a design method of a bionic porous gradient artificial hip joint matrix. Background technique [0002] The hip joint is one of the largest weight-bearing joints in the human body. Its structure is closely related to the mechanical properties of the human body, and determines human behavior and movement to a large extent. Because of the importance of the hip joint, the artificial hip joint was the first artificial joint to be studied. Since the 1960s, the emergence of artificial hip joints composed of metal femoral heads and ultra-high molecular weight polyethylene acetabulums and bone cement fixation technology has led to the large-scale clinical application of artificial hip joints. [0003] After the artificial hip joint is implanted in the human body, its service life depends not only on the nature of the artificial hip joint itself, but also on the bone tissue near t...
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IPC IPC(8): G06F17/00A61F2/30A61F2/32
CPCA61F2/30942A61F2/30767A61F2/32A61F2002/30199A61F2002/30317A61F2002/30784A61F2002/30943A61F2002/30948A61F2002/30985
Inventor 马志超卢坊州张微赵宏伟任露泉杜海瑞肖国林李伟智赵晟腾佟帅
Owner JILIN UNIV