1
Fred Chernow, Randy J Peterson: Software distribution system. Sughrue Mion Zinn Macpeak & Seas, March 12, 1991: US04999806 (559 worldwide citation)

A central station distributes software by telephone. The central station accepts credit card information, transmits an acceptance code to a caller and then terminates the call. After verifying the credit card information, the station calls the purchaser back and continues with the transaction only a ...


2
Gerard L Delsanti: Method of using removable endo-arterial devices to repair detachments in the arterial walls. Fulwider Patton Lee & Utecht, March 12, 1991: US04998539 (550 worldwide citation)

A removable endo-arterial device intended to repair detachments in arterial walls which includes a deformable cuff made of netting of interlocked wires and fixed to the distal end of a catheter, the other end of which is equipped with a funnel. The device also includes a stiff wire extending over th ...


3
Philip E Eggers, Hira V Thapliyal: Thermal angioplasty catheter and method. Advanced Angioplasty Products, Townsend and Townsend, March 12, 1991: US04998933 (465 worldwide citation)

This invention provides a method and apparatus for selectively heating an atheromatous mass which partially or fully occludes a particular blood vessel. As a result, the occlusive mass is effectively softened or weakened, allowing the occlusive mass to be more readily recanalized by expansion of a b ...


4
Julius G Hammerslag, Gary R Hammerslag: Steerable medical device. Knobbe Martens Olson & Bear, March 12, 1991: US04998916 (265 worldwide citation)

An elongate steerable implement is disclosed, which may be either a steerable guidewire or catheter for coronary angioplasty applications. A floppy steerable tip on a steering region at the distal end of the implement and a control device at the proximal end are connected by means of a plurality of ...


5
Nathan Gold, David L Willenborg, Jon Opsal, Allan Rosencwaig: Method and apparatus for measuring thickness of thin films. Therma Wave, Limbach Limbach & Sutton, March 12, 1991: US04999014 (242 worldwide citation)

An apparatus (20) for measuring the thickness of a thin film layer (32) on substrate (28) includes a probe beam of radiation (24) focused substantially normal to the surface of the sample using a high numerical aperture lens (30). The high numerical aperture lens (30) provides a large spread of angl ...


6
Wilfred J Samson, William S Tremulis: Steerable dilatation catheter. Advanced Cardiovascular Systems, Fulwider Patton Lee & Utecht, March 12, 1991: US04998923 (241 worldwide citation)

A low-profile steerable dilatation catheter for angioplasty procedures which has an inflated balloon on the distal end with little or no tendency to wrap on itself when the catheter is advanced through a patient's vascular system. The catheter comprises an elongated tubular member which is longitudi ...


7
Robert A Parks, Bradley E White: Biosensor electrode excitation circuit. Boehringer Mannheim, Perman & Green, March 12, 1991: US04999582 (226 worldwide citation)

A circuit is described for applying a potential to an electrode of a biosensing test cell, which electrode, when properly inserted in a female connector, is contacted by a pair spaced apart contacts. The circuit includes a source of excitation potential and an operational amplifier having one input ...


8
Atul Puri: Three dimensional motion compensated video coding. AT&T Bell Laboratories, Barry H Freedman, March 12, 1991: US04999705 (196 worldwide citation)

A video signal encoder uses three dimensional transform coding on blocks of intensity values and then selects the most significant coefficients for further processing by separating the coefficients into several groups have approximately the same energy and thus approximately the same significance. T ...


9
Albert K Chin, Anthony A Nobles, Kwok Y Lai: Real time angioscopy imaging system. Thomas J Fogarty, Limbach Limbach & Sutton, March 12, 1991: US04998972 (180 worldwide citation)

An angioscopy imaging system which operates under the control of a computer system includes an optical scanning system which is inserted into a vessel, such as an artery, for generation of an image. An irrigation system provides pulsatile introduction of flush solution to the vessel to create clear ...


10
John W Gaiser, Abdul Razaq A Balogun: High torque steerable dilatation catheter. Advanced Cardiovascular Systems, Fulwider Patton Lee & Utecht, March 12, 1991: US04998917 (179 worldwide citation)

A steerable dilatation catheter which is particularly adapted for angioplasty procedures having a concentric construction of thin-walled inner and outer tubular members of high strength plastic, such as polyimide, which provide diametric rigidity but longitudinal flexibility. At least the distal por ...