| 摘要 |
The base body (10) has an inner thread (16), and near its distal upper edge has a ring recess (18) which at its proximal end abuts upon a locating shoulder (20). In this shoulder are four equally peripherally spaced deepened pockets (22). Apart from the base body made from titanium coated with hydroxylapatite, distance socket upper (14) and lower (12) parts are incorporated. - The distance socket upper part (14) has a centring union (24) at its proximal end, with the outer dia. of which the ring recess (18) of the base body corresponds. This union has four equally peripherally spaced tongues (26) which are complementary to the base body pockets (22). The distal part of the inner bore of the distance socket upper part (14) has a greater dia. than the proximal part, whereby in the transition between the two parts or sections a stop shoulder (28) is formed. |
