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Ankle joint prosthesis and design method

A design method and ankle joint technology, applied in the direction of ankle joints, prostheses, joint implants, etc., can solve the problems of bone tissue lack of stress stimulation and force conduction, adverse effects of long-term implantation, poor adaptability, etc. Long-term implantation, excellent adaptability, and good surface quality

Pending Publication Date: 2021-11-09
重庆熙科医疗科技有限公司
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Problems solved by technology

[0003] At present, artificial joint prosthesis mostly adopts cobalt-chromium-molybdenum alloy with excellent biocompatibility and wear resistance, but its density and elastic modulus are far higher than those of biological natural bone, and its adaptability is poor, and it is easy to cause stress shielding and bone tissue growth. Lack of stress stimulation and force transmission adversely affects long-term implantation

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  • Ankle joint prosthesis and design method
  • Ankle joint prosthesis and design method
  • Ankle joint prosthesis and design method

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Embodiment Construction

[0037] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0038] In describing the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or element...

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Abstract

The invention relates to the technical field of medical instruments, and particularly discloses an ankle joint prosthesis and a design method. The ankle joint prosthesis comprises a tibia platform, a polyethylene liner and a talus top, the polyethylene liner is arranged at the lower end of the tibia platform, the talus top is arranged below the polyethylene liner, and the tibia platform and the talus top are formed through powder bed metal additive manufacturing. According to the ankle joint prosthesis and the design method, the tibia platform and the talus top which are manufactured and formed through powder bed metal additive manufacturing are high in forming precision, good in surface quality and excellent in performance, the tibia platform, the polyethylene liner and the talus top are matched with one another to form the ankle joint prosthesis, and the ankle joint prosthesis and the design method has the advantages of being more in line with the human body biomechanical structure, good in adaptability, capable of avoiding stress shielding. Bone tissue growth lacks stress stimulation and force conduction, and long-term implantation is facilitated.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an ankle joint prosthesis and a design method. Background technique [0002] The ankle joint bears all the weight of the human body and plays an important role in supporting the human body. It has a large degree of freedom of movement and complex stress conditions. Ankle arthritis, collapsing talus osteonecrosis and other diseases seriously affect standing and walking. Foot and ankle surgery colleagues in my country mainly adopt total talus excision and arthrodesis around the talus at the expense of talus function. The postoperative recovery time is long, the joint activity is lost, and the nonunion rate is high. After fusion, the ankle joint loses its flexion and extension functions, which affects patients. Gait and part of daily life are often accompanied by complications such as adjacent joint degeneration, joint stiffness, and loss of foot flexibility after surgery, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/42A61F2/30
CPCA61F2/4202A61F2/30942A61F2002/4205A61F2002/4207
Inventor 刘飞谢海琼张凯飞王森黎万乔刘炼立
Owner 重庆熙科医疗科技有限公司
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