Samuel Shiber: Atherectomy system and method of using the same. Surgical Systems & Instruments, Samuel Shiber, November 28, 1989: US04883458 (325 worldwide citation)

An atherectomy system for coring, ingesting and removing an obstruction from within a patient's vessel, comprising a flexible guide-wire insertable into the vessel, a flexible rotary catheter being rotatably disposed and insertable into the vessel over the flexible guide-wire, having a rotary coring ...

Norman M Whiteley, Michael W Hunkapiller, Alexander N Glazer: Detection of specific sequences in nucleic acids. Applied Biosystems, Joseph H Smith, November 28, 1989: US04883750 (276 worldwide citation)

The invention provides a method for diagnosis of genetic abnormalities or other genetic conditions which can be readily automated. The method is used to determine the presence or absence of a target sequence in a sample of denatured nucleic acid and entails hybridizing the sample with a probe comple ...

Edwin B Merrick: Artificially induced blood pulse for use with a pulse oximeter. Puritan Bennett Corporation, Fish & Richardson, November 28, 1989: US04883055 (243 worldwide citation)

An artificially induced blood pulse used for measuring oxygen saturation in arterial blood is produced by a cuff, wrapped around a body member having an artery upstream from a testing site, when a squeezing pulse is applied by the cuff to the body member.

Patricia A Broderick: Cathodic electrochemical current arrangement with telemetric application. Research Foundation The City University of New York, Morgan & Finnegan, November 28, 1989: US04883057 (227 worldwide citation)

This invention relates to a method for producing a cathodic, or reduction, current used in an in vivo semidifferential, semiderivative and/or semiintegral electrochemical method for achieving routine, reliable, and reproducible measurements of the dynamics of neurochemicals and neurochemical-like ma ...

Bernhard A Sabel, Andrew Freese, William M Saltzman: Controlled drug delivery system for treatment of neural disorders. Massachusetts Institute of Technology, Kilpatrick & Cody, November 28, 1989: US04883666 (215 worldwide citation)

The present invention is a method and composition for treatment of ischemic, metabolic, congenital, or degenerative disorders of the central or peripheral nervous system. The composition is formed by encapsulation within an implantable biocompatible polymeric device of one or more compounds which ha ...

Frederick L Dechow: Blood sampling device and method. Dec in Tech, Learman & McCulloch, November 28, 1989: US04883068 (203 worldwide citation)

A disposable blood sampling device wherein inner and outer spaced apart pad members, separated by a compressible pad-bridging enclosure respectively carry an axially extending evacuated collecting container closed by a penetrable end cap and an axially aligned, double-ended cannula. In normal positi ...

Richard Stutsman: Apparatus and method for using unique charge cards dispensed from a vending machine. Vertx Corporation, Pretty Schroeder Brueggemann & Clark, November 28, 1989: US04884212 (184 worldwide citation)

A dispensing machine is accessed repeatedly by a card issued by the machine. The machine comprises storage bins for holding and dispensing a plurality of products. A memory unit is included for storing information including representations of credit information, customer identification code informat ...

Kenneth A Hausman, Edwin B Merrick: Pulse oximeter. Puritan Bennett Corporation, Fish & Richardson, November 28, 1989: US04883353 (176 worldwide citation)

A pulse oximeter having a sensor responsive to light transmitted through an area of blood flow which is optically absorbed by hemoglobin for producing a pulsatile waveform indicating the current pulsatile component of blood flow. A process waveform is created for tracking the process of the oximeter ...

Pankaj Dixit, Jack Sliwa, Richard K Klein, Craig S Sander, Mohammad Farnaam: Contact plug and interconnect employing a barrier lining and a backfilled conductor material. Advanced Micro Devices, Ashen Golant Martin & Seldon, November 28, 1989: US04884123 (169 worldwide citation)

A stable, low resistance contact is formed in a contact hole (16) through an insulating layer (14), e.g., silicon dioxide, formed on a surface of a semiconductor substrate (12), e.g., silicon, to a portion of a doped region (10) in said semiconductor surface. The contact comprises (a) an adhesion an ...

Wolfgang R Mueller, Gwynne W Spencer II: Stacked double density memory module using industry standard memory chips. International Business Machines Corporation, M Bigel, D Lashmitt, S Meyers, November 28, 1989: US04884237 (166 worldwide citation)

A stacked double density memory module may be formed from two industry standard memory chips, by jumpering the unused and chip enable pins on one chip and then stacking the jumpered chip on the other chip with the pins on the jumpered (top) chip contacting the corresponding pins on the other (bottom ...

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