Sulzer Medizinaltechnik Ag

Protek Ag

Hansjorg Koller

Anne Tregoning Miller

Hans C Meuli

The device contains a rasp (2) corresponding to the implant shaft, which comprises a shaft body (4), which can be driven into the osseous tissue, and a neck part (5) protruding therefrom, which can be equipped with a test ball corresponding to the ball-and-socket joint, and a grip part (7) which can be coupled to the rasp (2) for the insertion and withdrawal of the shaft body (4). The grip part (7) contains a guide bush (10), which can be slipped onto the neck part (5), and a slip-on part (14) having a stop face which can be placed on a front support face of the neck part (5). On the grip part (7) is articulated a coupling part (11), which comprises a claw (27) which through a recess in the guide sleeve (10) can engage in a recess of the neck part (5) and can be disengaged from it. With this device, which can be manufactured from simple components which are easy to keep sterile, all stop, guide and clamping faces involved in the insertion and withdrawal of the shaft body (4) lie inside the enveloping shell face of the neck part (5) and as a result are protected from contact with fluid and bone particles.

Device for the preparation of a tubular bone for the insertion of an

A tubular member (1) made from wire, preferably titanium wire, which is manufactured on a round knitting machine, is inserted into the cavity (3c) of a pressing tool (2) having a pressing mold (3b) and die (3a). The tubular member (1) is plastically deformed by the die (3a) introduced into the cavity (3c), so that the member (1) assumes the shape predetermined by the pressing mold (3b), and thus is transformed to produce a member (4) which can be inserted as a filling member (4) into bone cavities, for example as a medullary space barrier.

Filling member made from metal for bone cavities

Shanks designed especially for small joints, for example, finger joints, and having a rectangular cross-section of core (1), exhibit towards their free end plastically deformable lobes (7) of pieces of sheetmetal which may be deformed, e.g., bent intraoperatively, for which they are subdivided at intervals in the axial direction into a number of sections (7a) through cuts (8) running perpendicular to the axis (9) of the shank.

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Winterthur, Switzerland

Hansjorg Koller