The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 07, 1985
Filed:
Mar. 23, 1984
Martin J Slavin, Dix Hills, NY (US);
Intech Systems Corp., Hauppauge, NY (US);
Abstract
A portable apparatus for determining the degree of occlusion in a blood vessel. The apparatus includes a transmitter for producing an ultrasonic signal, a first probe for directing the ultrasonic signal to a first location in a blood vessel and a second probe for directing an ultrasonic signal to a second location in the blood vessel. A first receiver receives the ultrasonic signal after return from contact of blood flowing in the blood vessel at the first location and produces a first received signal representative thereof. A second receiver receives the ultrasonic signal after returning from contact with blood vessel at the second location and produces a second received signal representative thereof. A difference measuring circuit receives the first and second received signals and produces a difference signal representative of the difference between the first and second received signals so that a difference in blood flow velocity at the first and second locations can be determined.