A device for mounting a prosthesis on skeletal tissue

Abstract

Abstract 1291470 Implantable supports for prostheses AGA AB 12 Nov 1969 [9 Dec 1968] 55297/69 Heading A5R A device for mounting protheses such as false teeth, on skeleton tissue, comprises at least two interconnectable units, i.e. a fixture unit 10 to be permanently implanted in the tissue and a "distance unit" 22, 24 to which the protheses are attached. The outer surface of the fixture unit 10 is provided with a rough and/or porous surface and holes 12 to permit skeleton tissue to attach to the unit when the unit is located in the skeleton. This fixture unit surface may have a screw thread. Two bores 11 and 14 are provided in unit 10, bore 14 being threaded to receive a male thread on the "distance unit". The "distance unit" comprises a sleeve part 22 and fitting bolt part 24 and the latter is provided with a female thread to receive the prothesis. Fixture unit 10 includes a releasable ring 17 provided with a sharp edge 19 at its outer lower side to facilitate grafting to the skeleton. Alternatively an integral flange (35) having an edge (31) may be provided (Fig. 5). A screw 20 is arranged to be temporarily screwed into unit 10 with ring 17 instead of the distance unit, during initial implantation in the skeleton. In an embodiment, a single threaded bore in unit 10 receives a screw (29) which acts on a disk (28) movable to force flanges (27) on the unit 10 outwards, to facilitate bonding to the skeleton. Bolt part 24 of the "distance unit" includes a weakend neck and heat insulating material. The fixture is of plastics material or titanium.

Inventors

No inventors recorded.

Bibliographic Details