1
Theodore Karwoski, Yasuo Matsuzawa: Vascular prosthesis having fluorinated coating with varying F/C ratio. Atrium Medical Corporation, Lahive & Cockfield, January 12, 1988: US04718907 (355 worldwide citation)

Disclosed is a method of producing implantable prosthetic devices, e.g., tubular vascular prostheses having a substantially non-thrombogenic inside surface and a biocompatible outside surface. The method involves deposition onto an elongate substrate, e.g., a porous tubular substrate, of a fluorine- ...


2
Francis A L Esperance Jr: Apparatus for ophthalmological surgery. LRI, Hopgood Calimafde Kalil Blaustein & Judlowe, January 12, 1988: US04718418 (311 worldwide citation)

The invention contemplates use of a scanning laser characterized by ultraviolet radiation to achieve controlled ablative photodecomposition of one or more selected regions of a cornea. Irradiated flux density and exposure time are so controlled as to achieve desired depth of the ablation, which is a ...


3
Harold J Vinegar, William P Rothwell: NMR imaging of materials for transport properties. Shell Oil Company, January 12, 1988: US04719423 (257 worldwide citation)

NMR imaging methods are provided for determining spatial diffusion coefficients, formation resistivity factors, mean pore size, and permeability of a porous material. The imaging methods employ a constant magnetic field and two images are obtained for the material, one with a non-imaging gradient an ...


4
Rosa Young, Napoleon Formigoni: Grooved optical data storage device including a chalcogenide memory layer. Energy Conversion Devices, Richard M Goldman, Marvin S Siskind, Judith M Riley, January 12, 1988: US04719594 (256 worldwide citation)

Disclosed is an optical data storage device having incorporated therein an optical data storage medium. The optical data storage device is switchable between at least two detectable states by the application of projected beam and energy thereto. The optical data storage device has a first substantia ...


5
Carter Kittrell, Robert L Willett, Cynthia de los Santos Pacheco, Leo T Kenny, Michael S Feld: Visible fluorescence spectral diagnostic for laser angiosurgery. Massachusetts Institute of Technology, Hamilton Brook Smith & Reynolds, January 12, 1988: US04718417 (242 worldwide citation)

A method of diagnosis of the type of tissue in an artery, including distinguishing artery wall from atheromateous plaque is described, in which a catheter with one or more optical fibers is enclosed at a distal end by an optical shield transparent to light radiation and wherein the proximal end of t ...


6
Steven B Feinstein: Contrast agents for ultrasonic imaging. Tilton Fallon Lungmus & Chestnut, January 12, 1988: US04718433 (239 worldwide citation)

A method of ultrasonic imaging for use in medical procedures is disclosed. The method comprises providing specifically defined microbubbles formed by sonicating a bicompatible liquid comprising a sonicated aqueous protein solution, preferably a 5% solution of human serum albumin, and denaturing the ...


7
Kazuo Okada: Slot machine. Kabushiki Kaisha Universal, Young & Thompson, January 12, 1988: US04718672 (222 worldwide citation)

In a slot machine, a specific winning line among a plurality of winning lines, e.g., an effective winning line or a winning line on which a winning symbol array appears, is optically identified. To identify a winning line or lines, series of light emitting diodes are disposed along the winning line ...


8
Michio Asano, Akira Masaki, Kenichi Ishibashi: Output circuit having transistor monitor for matching output impedance to load impedance. Hitachi, Antonelli Terry & Wands, January 12, 1988: US04719369 (172 worldwide citation)

An output circuit comprises an output transistor circuit for applying an output signal to a transmission line connected to an output terminal, a circuit for driving the output transistor circuit in response to an input signal applied to an input terminal, and a control circuit by which the signal am ...


9
Frank D Dorman, Henry Buchwald: Pressure regulated implantable infusion pump. University of Minnesota, Merchant Gould Smith Edell Welter & Schmidt, January 12, 1988: US04718893 (153 worldwide citation)

An implantable infusion pump (20) for infusing drugs or other chemical or solutions into the body. A movable diaphragm (26) forming a variable volume drug chamber (22). A fluid piston (32) opposing the force exerted by the diaphragm (26) on the drug solution in the drug chamber (22). The pressure of ...


10
Leonard Liebermann: Storage battery condition tester utilizing low load current. TIF Instruments, Brown Martin Haller & Meador, January 12, 1988: US04719428 (150 worldwide citation)

A condition tester for a storage battery that monitors the effect of internal battery resistance without drawing large currents. A switched load periodically draws a small current across the battery terminals. An AC voltage is produced at the battery terminals resulting from the oscillating current ...