All-ceramic artificial hip-joint prosthesis and preparation method thereof

A technology of hip joint prosthesis and ceramics, applied in the direction of hip joints, prostheses, joint implants, etc., can solve the problems of large difference in elastic modulus between metal and ceramics, uneven stress distribution, stress concentration, etc. Long-term stability, avoiding interface friction, and ensuring uniformity

Inactive Publication Date: 2017-05-31
戴闽
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this design realizes the ceramic-to-ceramic friction interface, there is still interface friction between metal and ceramic, and the risk of ceramic and metal wear still exists
In addition, the elastic modulus of metal and ceramics is quite different, the stress distribution is uneven, and the phenomenon of stress concentration and cracking of ceramics is prone to occur.

Method used

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  • All-ceramic artificial hip-joint prosthesis and preparation method thereof
  • All-ceramic artificial hip-joint prosthesis and preparation method thereof
  • All-ceramic artificial hip-joint prosthesis and preparation method thereof

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Embodiment Construction

[0023] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but should not be used to limit the scope of the present invention.

[0024] Such as figure 1 and figure 2 As shown, the all-ceramic artificial hip joint prosthesis of the embodiment of the present invention includes a ceramic acetabulum 1 and a ceramic femur 2 . The outer surface of the ceramic acetabulum 1 is formed into a hemispherical shape, and the outer surface of the ceramic acetabulum 1 is provided with intersecting annular grooves 3 and longitudinal grooves 4, and the number of the annular grooves 3 and the longitudinal grooves 4 is equal to Two grooves make the prosthesis neither need bone cement fixation nor biological surface for bone ingrowth to be installed. Stability is achieved by press-fitting with bone tissue. The inne...

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Abstract

The invention discloses an all-ceramic artificial hip-joint prosthesis and a preparation method thereof. The artificial hip-joint prosthesis includes a ceramic acetabulum and a ceramic femur. The outer surface of the ceramic acetabulum is hemispherical and is provided with mutually intersected annular grooves and longitudinal grooves; the inner surface of the ceramic acetabulum is in a ball-like shape; the ceramic femur comprises a femoral stem and a femoral head which are connected; the femoral head is attached to the ball-shaped inner surface of the ceramic acetabulum, and connects the ceramic femur with the ceramic acetabulum. Ceramic serves as the preparation material of the prosthesis, and the prosthesis has good abrasion resistance. Besides, the surface of the prosthesis is provided with the grooves, and therefore when the prosthesis is installed, people do not need to use bone cement for fixation and do not need the biological surface for bones to grow into. Stability is achieved through press fit of the prosthesis and bone tissue.

Description

technical field [0001] The invention relates to an artificial joint in the medical field, in particular to an all-ceramic artificial hip joint prosthesis and a preparation method thereof. Background technique [0002] Artificial joint replacement is considered to be an effective way to treat common orthopedic diseases such as severe joint trauma, osteonecrosis, tumors around the joints, and various end-stage arthritis. According to preliminary statistics, there are more than 1.5 million joint replacement operations in the world every year, and with the acceleration of population aging, this number is still rising. With the continuous improvement of surgical techniques and the gradual improvement of joint prosthesis design, most patients after joint replacement can obtain relatively satisfactory results, but periprosthetic osteolysis and prosthetic loosening induced by prosthetic wear and wear particles release It is still the main reason that affects the long-term use of ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/32A61F2/36A61F2/34
CPCA61F2/32A61F2/34A61F2/36A61F2240/001A61F2310/00179
Inventor 戴闽
Owner 戴闽
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