Invention Grant
- Patent Title: Reduction of the development of stripe wear on inserts for hip joint prostheses by modifying the geometry of the transition between the face and spherical recess
- Patent Title (中): 通过修改面和球形凹槽之间的过渡的几何形状，减少髋关节假体插入物上条纹磨损的发展
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Application No.: US12526850Application Date: 2008-02-25
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Publication No.: US08349018B2Publication Date: 2013-01-08
- Inventor: Roman Preuss , Thomas Pandorf
- Applicant: Roman Preuss , Thomas Pandorf
- Applicant Address: DE Plochingen
- Assignee: CeramTec GmbH
- Current Assignee: CeramTec GmbH
- Current Assignee Address: DE Plochingen
- Agency: Fulbright & Jaworski LLP
- Priority: DE102007009439 20070223
- International Application: PCT/EP2008/052238 WO 20080225
- International Announcement: WO2008/102014 WO 20080828
- Main IPC: A61F2/32
- IPC: A61F2/32
Abstract:
A socket insert of a hip joint prosthesis having a spherical-indentation-shaped recess in which a spherical head of a femur is mounted. The spherical indentation has a run-in zone which ends on one side with a circular arc tangentially in an end face of the socket insert and extends on another side as far as the run-in edge. Between a start of the circular arc with a radius of the length (RE) and the run-in edge of the spherical indentation with the radius of the length (RK) the run-in zone forms a curve, the function of which is continuously differentiated twice at every point.
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