Abstract: A contact element and a contact means comprising at least one contact element where the contact element comprises electrical contact means renders displaceable, such as translatable or rotatable, by a resilient means in which the conductor is at least partly embedded and through a surface of which the contacting means is exposed. This resilient means provides a contact element in which the contacting means may compensate for an unintentional displacement by one forcing the other in a given direction, via the resilient means. Also, the displacement may bring about a cleaning action between the contacting means. These means may be used both for disconnectable connections and rotatable, unconnnectable connections.

Abstract: An implant to be inserted into a bore or recess (22) of a bone, such as a jaw bone (23), comprises a radially expandable tubular member (12) which is preferably made from a helically wound string or wire, and a core member (13) to be positioned within the tubular member. The core member (13) may be moved axially in relation to the tubular member (12) so as to expand the tubular member radially, whereby the implant may be efficiently fastened. The core member (13) may be screwed into the outer tubular member (12) or into an anchoring member (11) arranged at the inner end of the recess (22). The implant is relatively easy to remove if such removal should become necessary by radially contracting the tubular member (12).