Spacer for vertebral prosthesis - has oval shaped, concentric, telescopic members rotated into locked position to engage threaded portions

Abstract

Abstract The distance piece is for insertion in a vertical prosthesis, and for embedding in cement to form a connection with a section of bone. It consists of two sections (1,2) which slide telescopically. The upper section (1) has a tube (5) forming a skirt with inner threads, and the lower section (2) has an externally threaded stem. Both are oval in shape, permitting the sliding action to give a required overall length. By fixing the lower section and turning the upper section, the threads engage, locking the two sections together. The upper section has flats (17) near the bottom, and the lower section has a hole (16) near its bottom. This enables a tool to be used, having a forked jaw to grip the flats, and a projecting pin to fit in the hole, in order to rotate the upper section. The tool has handles with a tooled locking bar between them.

Inventors

• 👤 Arnold 2061 Kaihude Keller

Bibliographic Details