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:
Apr. 28, 1992
Filed:
May. 20, 1991
Odile Bonnefous, Nogent, FR;
U.S. Philips Corporation, New York, NY (US);
Abstract
The blood flow rate Q(t) is obtained from a first unit (300) measuring the speed V(t, z), z being the depth of examination, independent of the frequency of the ultrasonic wave used. In a similar manner a second measuring unit (500) enables the measurement of the radial speeds V.sub.1 (t, z) and V.sub.2 (t, z) of the shift of the two corresponding vessel walls, and thereafter, on account of two spatial integrations (606, 607) and time integrations (608, 609), the measurement of the instantaneous variation of the radius of the vessel .DELTA.r(t). The functions Q(t) and .DELTA.r(t) are thereafter displayed in several manners, for the purpose of comparison, for the duration of at least one cardiac cycle.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile