1
Muller Maurice E Prof Dr Med, Spotorno Lorenzo Dr Med, Frey Otto Dr: Bone screw.. Sulzer, Protek, June 20, 1990: EP0374088-A1 (132 worldwide citation)

The single-threaded or multiple-threaded bone screw is designed in the manner of a corkscrew, i.e. its threads (4) are not arranged on a solid core, but instead "twist round" a cylindrical hollow space (5). The new form of the thread (4) permits a substantial adjustment of the flexional elasticity o ...


2
Frey Otto, Koch Rudolf: Setting and driving tool for a bone nail.. Sulzer, October 21, 1987: EP0241792-A1 (108 worldwide citation)

Der Knochennagel (l), der zur Fixierung von Implantaten in einem Knochen bestimmt ist, hat einen konischen Kopf (2), der an seiner Oberseite eine kegelförmige Zentriervertiefung (ll) besitzt. In diese greift ein Zapfen (l7) eines Setz- und Einschlaginstrumentes (l4) ein, wobei eine verschiebbare Hül ...


3
Frey Otto, Koch Rudolf: Spinal disc prosthesis.. Sulzer, January 11, 1989: EP0298235-A1 (57 worldwide citation)

Die von ventral implantierbare Zwischenwirbel-Prothese besteht aus einem scheibenartigen Prothesenkörper (1), auf dessen Scheibenflächen wulstartige Erhebungen (2) vorgesehen sind. Die neue Prothese gewährleistet als Bandscheibenersatz eine stabile Versteifung (Arthrodese) zweier Wirbel (9) gegenein ...


4
Frey Otto, Koch Rudolf, Planck Heinrich M F Dr Ing: Joint endoprosthesis.. Sulzer, August 10, 1988: EP0277282-A1 (55 worldwide citation)

Between two anchoring elements (4, 5), the new joint endoprosthesis (3) consists of a compressible, elastic hollow body (6), which delimits a closed hollow cavity (7). This hollow cavity (7) is filled with a free-flowing, non-compressible medium (8), for example with a fluid tolerated by the body. W ...


5
Frey Otto, Koch Rudolf: Metallic spinal disc prosthesis.. Sulzer, January 11, 1989: EP0298233-A1 (41 worldwide citation)

The intervertebral prosthesis, which can be implanted from the ventral direction, consists of a disc-shaped prosthesis body (1) on whose ventral edge (3) there are tabs (4) with through openings (5) for bone screws. The new prosthesis guarantees, as an intervertebral disc replacement, a stable stiff ...


6
Muller Maurice C Prof Dr Med, Frey Otto, Willi Roland: Two-piece acetabular cup.. Sulzer, Protek, May 3, 1989: EP0313762-A1 (32 worldwide citation)

The cup element (3) and the anchoring element (1) of the two-piece acetabular cup are fixed relative to one another by means of a snap closure; in a construction of this type, the cup element must be centred and guided when being pressed in, for which purpose a cylinder cam and a corresponding cylin ...


7
Frey Otto, Koch Rudolf: Connection of two parts of an implant.. Sulzer, October 22, 1986: EP0198163-A2 (30 worldwide citation)

1. A connection between two implant parts (1, 2, 21) more particularly for total joint endoprostheses, which during the implanting operation are required to be so interconnected that relative movements between them are obviated, one (2) of the two parts (1, 2, 21) being a male cone (4) and the other ...


8
Frey Otto, Koch Rudolf: Hip joint prosthesis.. Sulzer, July 23, 1986: EP0187903-A1 (26 worldwide citation)

1. A hip joint replacement having at least in the distal zone a straight, circular-section and fixed-diameter stem (2) which merges proximally at an angle into a neck prosthesis (9) adapted to receive the head of the joint, a collar (12) which is adapted to bear on the cortical edge of the resection ...


9
Frey Otto: Superficial structure for anchoring elements of bone implants.. Sulzer, November 4, 1981: EP0038902-A2 (25 worldwide citation)

The metallic implant for a hip joint prosthesis has a shaft (1) with a flat area (3) which abuts against the patient's bone. In order to make a joint with a high shear strength between implant and bone, the flat surface is covered with a layer of woven metal wire mesh. Because of undulations of the ...


10
Koch Rudolf, Frey Otto: Kit for the intraoperative construction of a femoral head prosthesis.. Sulzer, November 17, 1988: EP0290735-A1 (21 worldwide citation)

The kit for the anchoring stem (1) of a femoral head prosthesis consists of a stem body (2), a neck part (8) and an end part (17). The neck part (8) and end part (17) can be attached to the stem body (2), which gives stability and strength to the stem (1) by virtue of its master cones (4, 5) extendi ...