Heinz Fuchs deceased, Hans Friedrich Muller, Hildegard Hecht: Button for surgical applications. Intermedicat, Merriam Marshall & Bicknell, September 29, 1981: US04291698 (332 worldwide citation)

A button for surgical applications comprising a disk having a slot which extends to a passage for guiding a thread therethrough within the circumference of the disk, said passage being sealed by a clamping device for clamping the thread firmly in the passage. The clamping device includes a disk segm ...

Helmut Reul: Artificial heart valve. Medac Gesellschaft fur Klinische Spezialpraparate mbH, Cushman Darby and Cushman, September 29, 1981: US04291420 (305 worldwide citation)

An artificial, triple-lobed semilunar valve is disclosed for replacing the aortic or pulmonary valve in the heart. The valve includes a flexible suture ring which conforms to the shape of the aortic root and three flexible pockets which are mounted within the suture ring. When fluid flows through th ...

Marlin S Heilman, Alois A Langer: Implantable cardiac defibrillating electrode. Mieczyslaw Mirowski, Fleit & Jacobson, September 29, 1981: US04291707 (219 worldwide citation)

Disclosed is an implantable cardiac electrode for use in defibrillation. The electrode has a metallic mesh electrode surface surrounded by an insulating material which is formed so as to increase the metallic surface area while providing a substantially uniform current density across the electrode s ...

Yoshiki Suzuki, Hiroshi Ikura, Gentaro Yamashita: Slow-releasing medical preparation to be administered by adhering to a wet mucous surface. Teijin, Sughrue Mion Zinn Macpeak & Seas, September 29, 1981: US04292299 (190 worldwide citation)

PCT No. PCT/JP79/00284 Sec. 371 Date Nov. 6, 1979 Sec. 102(e) Date July 7, 1980 PCT Filed July 7, 1980 PCT Pub. No. WO80/00916 PCT Pub. Date May 15, 1980

Pierre A Beynet: Drilling fluid bypass for marine riser. Standard Oil Company, John D Gassett, September 29, 1981: US04291772 (167 worldwide citation)

Method and apparatus are described to reduce the tension required on a riser pipe used in offshore drilling between a floating vessel and a subsea wellhead. Heavy drilling fluid is circulated down a drill pipe and up the annulus between the drill pipe and the borehole wall to a point just above a su ...

Leslie A Geddes, Joe D Bourland, Reese S Terry: Method of and apparatus for automatically detecting and treating ventricular fibrillation. Purdue Research Foundation, Larry J Palguta, John A Young, September 29, 1981: US04291699 (156 worldwide citation)

Method of and apparatus for automatic defibrillation of the cardiac ventricles of a heart wherein both the mechanical and electrical activities of the ventricles are sensed and used as operating inputs to the controls. Electrical activity is detected and measured with a pair of electrodes, and the w ...

John W Severinghaus, Edwin M Severinghaus: Neuromuscular block monitor. The Regents of the University of California, Limbach Limbach & Sutton, September 29, 1981: US04291705 (137 worldwide citation)

To determine the degree of neuromuscular blockage, the apparatus of the invention electrically, supramaximally stimulates the motor nerve of a patient by stimulus means, applies the resulting electromyogram (EMG) produced by the muscle associated with that motor nerve and integrates the amplified EM ...

Melvin C Hendrickson: Stv Subscriber address system. Zenith Radio Corporation, September 29, 1981: US04292650 (136 worldwide citation)

A system for selectively addressing a plurality of television receivers, each of the receivers being identified by a unique n-bit address code, comprises means for transmitting a prefix code which is common to the p most significant bits of a group of address codes during a first horizontal scanning ...

Dieter W Bauer: Power transmission and energy absorbing systems. The B F Goodrich Company, James E Brunton, September 29, 1981: US04291794 (129 worldwide citation)

A power transmission-energy absorption device and carbon composite friction facing material for use therein having superior friction characteristics. Through appropriate selection of the starting carbon substrate material and through precise control over the amount and character of pyrolytic carbon, ...

Ephraim H Frei, Bruce D Sollish: Apparatus and method for detection of tumors in tissue. Yeda Research & Development, Browdy and Neimark, September 29, 1981: US04291708 (122 worldwide citation)

An apparatus for detecting tumors in living human breast tissue includes instrumentalities for determining the dielectric constants of a plurality of localized regions of living human breast tissue. These instrumentalities include a bridge which is provided with a circuit for automatically nulling t ...