Connection of two parts of an implant

Abstract

Abstract 1. A connection between two implant parts (1, 2, 21) more particularly for total joint endoprostheses, which during the implanting operation are required to be so interconnected that relative movements between them are obviated, one (2) of the two parts (1, 2, 21) being a male cone (4) and the other a female cone (5), which have identical conicity, and in which securing elements (9; 25, 26) are provided to prevent relative rotation of the two parts (1, 2, 21), such elements being intraoperatively fixable and releasable, characterised in that the conicity is between 1 and 8%, in that the surfaces of the cones have an extremely fine thread (12, 13) with a pitch of 0.1 to 0.5 mm, and finally in that the screwthreaded cones (4, 5) are followed coaxially in the direction of insertion by a cylindrical guide zone (6, 7) where the bore (7) and pin (6) are coordinated to form a sliding fit.

Inventors

• 👤 Otto Frey
• 👤 Rudolf Koch

Bibliographic Details