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Artificial acetabular cup

A hip socket and hip joint technology, applied in the direction of hip joints, acetabular sockets, joint implants, etc., can solve the problems of stress blocking, fretting wear of the outer cup and inner lining, which is not conducive to the choice of doctors, and achieves Reduce stress concentration, avoid release of metal ions and particles, strong selectivity

Inactive Publication Date: 2015-11-11
JIANSU OKANI MEDICAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The design of the first type of acetabular cup has the advantages of low cost and good long-term clinical effect, but it is not conducive to the choice of doctors in different patients.
The second kind can solve the clinical use problem of the first kind, but brings other clinical problems subsequently, comprises the release of metal ion, stress blocking, the fretting wear problem of outer cup and inner liner etc. (AgneMT, UnderwoodRJ, KocagozSB, MacDonaldDW ,DayJS,ParviziJ,KraayMJ,MontMA,KleinGR,CatesHE,KurtzSM.Istherematerial loss at the backside taperinmodularCoCracetabularliners?ClinOrthopRelatRes.2015Jan;473(1):275-85.doi:10.1007 / s11999-014-3982602-1.Opct

Method used

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  • Artificial acetabular cup
  • Artificial acetabular cup
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Embodiment Construction

[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0030] Such as Figure 1a and 1b As shown, the present invention provides a monolithic artificial hip joint acetabular cup, which is in the shape of a concave semicircle, including an outer layer 1 and an inner layer 2; both the outer layer 1 and the inner layer 2 are made of polyether ether ketone or its derivatives It is composed of objects; the outer layer 1 and the inner layer 2 are fixed into an integral structure.

[0031] In the above technical scheme, the surface of the inner layer 2 is directly used in conjunction with the femoral head, and the femoral head is made of any material in poly...

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Abstract

The invention relates to an artificial acetabular cup. The artificial acetabular cup which is a single-type artificial acetabular cup is in a concave semicircle shape and comprises an outer layer and an inner layer, and the outer layer and the inner layer are both composed of PEEK or derivatives of PEEK and are fixed into a whole. The invention further relates to an artificial acetabular cup which can be combined with an acetabular cup lining. The artificial acetabular cup can be used independently or form a combined acetabular cup to be used, so that selectivity is high. When the artificial acetabular cup forms the combined acetabular cup, the combination of the inner layer of the artificial acetabular cup and the acetabular cup lining can reduce stress concentration, and therefore the risks of fretting wear and lining damage are reduced, or a friction pair is directly formed by the acetabular cup and the outer surface of a femoral prosthesis. The PEEK inner layer of the artificial acetabular cup has the advantages of being resistant to corrosion and fretting wear, and therefore release of metal ions and particulates harming the human body can be avoided.

Description

technical field [0001] The present invention relates to a medical rehabilitation device, more specifically, to an artificial hip joint cup. Background technique [0002] Artificial hip replacement is one of the major medical inventions that have been widely used clinically since the 1960s. A major part of the artificial joint prosthesis is the acetabular cup. The external fixation of the cup and pelvis not only affects the stability of the joint, but also affects the transmission of joint load, stress blocking and long-term clinical effect. The inner surface of the acetabular cup is directly combined with the femoral head to form the sliding surface of the hip joint, which affects the movement of the joint and brings adverse biological effects due to friction and wear. The design of modern artificial hip joint cups can be roughly divided into two categories. The first type is monolithic, which is generally fixed with bone cement. The most typical one is the Charnley hip jo...

Claims

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Application Information

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IPC IPC(8): A61F2/34A61L27/34
CPCA61F2/34
Inventor 朱健徐龙伟
Owner JIANSU OKANI MEDICAL TECH CO LTD
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