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US 2023/0122922 A1Published application
Implant With Ceramic Joint Surface
AssigneeFx Solutions
InventorJean-Marie DAUDET
Life of this patent
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Abstract
A joint prosthesis implant includes a main body made mainly of ceramic and comprising a joint outer surface made of ceramic, of concave or convex shape, at least one tightening screw configured to tighten the main body on the patient's bone or on an intermediate element attached to said bone, and at least one added ring in the main body configured to distribute homogeneously in the main body the mechanical stresses caused by tightening the tightening screw.
Claims12
A joint prosthesis implant comprising:
- a main body made mainly of ceramic and comprising a joint outer surface made of ceramic, of concave or convex shape,
- at least one tightening screw configured to tighten the main body on the patient's bone or on an intermediate element attached to said bone,
- at least one added ring in the main body and forming with it a chamber trapping the head of the tightening screw and comprising a bearing surface forming a stop for said head of the tightening screw, the added ring being configured to be in contact with the tightening screw during said tightening, the added ring comprising a central hole crossed by the tightening screw, the added ring being configured to distribute homogeneously in the main body the mechanical stresses caused by tightening the tightening screw.
A joint prosthesis comprising an implant comprising:
- a main body made mainly of ceramic and comprising a joint outer surface made of ceramic, of concave or convex shape,
- at least one tightening screw configured to tighten the main body on the patient's bone or on an intermediate element attached to said bone,
- at least one added ring in the main body and forming with it a chamber trapping the head of the tightening screw and comprising a bearing surface forming a stop for said head of the tightening screw, the added ring being configured to be in contact with the tightening screw during said tightening, the added ring comprising a central hole crossed by the tightening screw, the added ring being configured to distribute homogeneously in the main body the mechanical stresses caused by tightening the tightening screw.
Dependencies are inferred from the claim text.