Design method of bionic porous gradient artificial hip joint matrix

A design method and technology for hip joints, applied in hip joints, joint implants, joint implants, etc., can solve problems such as reducing the level of bone stress, improve service life, help recovery, and avoid sterility Effects of sexual loosening complications

Active Publication Date: 2020-04-03
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 artifi

Method used

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  • Design method of bionic porous gradient artificial hip joint matrix
  • Design method of bionic porous gradient artificial hip joint matrix
  • Design method of bionic porous gradient artificial hip joint matrix

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Embodiment

[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. According to the design method of the bionic porous gradient artificial hip joint matrix, a low-density area, a medium-density area and a high-density area with ordered porous gradient properties are separately constructed on basis of three basic units, including a low-density area, a medium-density area and a high-density area; and then, the three units are combined so as to construct a matrix part of an artificial hip joint model. The design method of the bionic porous gradient artificial hip joint matrix utilizes a bone joint matrix with porous gradient properties as a bionic template; and bionic design is performed on arrangement ways and spatial layouts of the three basic units with different structures and density characteristics so as to obtain a bionic artificial hip joint matrix which is relatively close to a bone joint before replacement in terms of mechanical properties, so thatcomplications of aseptic loosening in previous artificial joint replacement operation can be effectively avoided so as to improve 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...

Claims

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Application Information

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IPC IPC(8): A61F2/30A61F2/32
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
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