Thomas P Hedman, John P Kostuik, Geoffrey R Fernie, Brian E Maki: Artificial spinal disc. Health & Research Services, Rogers Bereskin & Parr, July 26, 1988: US04759769 (827 worldwide citation)

An artificial disc for a human spine. The disc has upper and lower members hinged together at their rear portions and biased apart at their fronts by stiff coil springs. Rear stop surfaces limit the opening movement of the members. Vertically projecting tabs at the front and side of each member are ...

Karin Buettner Janz, Bernd Derr, Klaus Peter Erkel, Hans Joachim Helisch, Kurt Schellnack, Roland Schumann: Intervertebral disc endoprosthesis. Humboldt Universitaet zu Berlin, Jordan and Hamburg, July 26, 1988: US04759766 (663 worldwide citation)

An intervertebral disc endoprothesis comprises two symmetrical, concave end plates with an intermediate convex spacing piece. The end plates and the spacing piece have a plane guide rim. The end plates either have an edge shoulder or an annular groove for a toroid provided on the spacing piece. Alte ...

Chung C Young, Kenneth Gary, Handani Winarta, Chin Chun Chen: Glucose electrode and method of determining glucose. Nova Biomedical Corporation, July 26, 1988: US04759828 (540 worldwide citation)

An electrode assembly for polarographic assay of glucose in solution having a laminated membrane, the outer membrane being from 1 to 20 .mu.m thick and having a pore size of 10 to 125 .ANG., the inner membrane having a thickness of 2 to 4 .mu.m, and bonded to the outer membrane with immobilized gluc ...

Joseph D H Sidley: System for interactively playing poker with a plurality of players. Bacon & Thomas, July 26, 1988: US04760527 (490 worldwide citation)

An electronic system for playing a card game of poker is disclosed which permits interactive wagering among a plurality of players. The system incorporates a central processing unit and a plurality of individual player consoles, each having a display device and an input device. The display shows eac ...

Harold K Dunn, Kim C Bertin: Instruments for shaping distal femoral and proximal tibial surfaces. M Reid Russell, July 26, 1988: US04759350 (395 worldwide citation)

The present invention provides a system of instruments for shaping the distal femur and proximal tibia surfaces to receive components of a knee prosthesis for knee replacement surgery. The system references the femur intramedullary channel with a femoral alignment guide to prepare the distal femur t ...

Shlomo Gabbay: Prosthetic heart valve. Jordan B Bierman, July 26, 1988: US04759758 (382 worldwide citation)

An improved prosthetic heart valve comprises a support body or stent covered by a layer of biological tissue having only the smooth surfaces thereof presented outwardly. The stent has a cutaway section and a flexible cusp sewn thereto for opening and closing the valve. The valve cusp is made of peri ...

Manfred Franetzki: Implantable, calibrateable measuring instrument for a body substance and a calibrating method. Siemens Aktiengesellschaft, Hill Van Santen Steadman & Simpson, July 26, 1988: US04759371 (270 worldwide citation)

An implantable measuring instrument for a body substance for use in controlling an implantable infusion device has a housing with a recess covered by a semi-permeable membrane which permits transfer of molecules of a selected size therethrough. The volume defined by the recess and the membrane is in ...

Hugh M Forman, Donald B Williams: Reconstitution device. Baxter Travenol Laboratories, Paul C Flattery, Bradford R L Price, July 26, 1988: US04759756 (260 worldwide citation)

Various embodiments of an improved reconstitution device 30, 168, 170, 186, 242, 256, 274 are disclosed, directed to the proper mixing of two substances, and are particularly directed to the medical field for the reconstitution of a drug 36 which may be stored in a drug vial 32 with a diluent 60 sto ...

David A Estell, James A Wells: Modified enzymes and methods for making same. Genencor, James G Passe, Max D Hensley, July 26, 1988: US04760025 (253 worldwide citation)

A cloned subtilisin gene has been modified at specific sites to cause amino acid substitutions at certain spots in the enzyme. The modified enzyme, preferably produced by Bacillus, is useful in combination with detergents.

Jerome Swartz, Howard M Shepard, Eric F Barkan, Mark J Krichever, Boris Metlitsky, Edward Barkan, Alexander M Adelson: Portable laser diode scanning head. Symbol Technologies, Kirschstein Kirschstein Ottinger & Israel, July 26, 1988: US04760248 (240 worldwide citation)

A portable laser diode scanning head, aimable at each symbol to be read, emits and receives non-readily-visible laser light, and is equipped with a trigger-actuated aiming light arrangement for visually locating and tracking each symbol. A compact laser diode optical train and an optical folded path ...