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:
Jan. 16, 1990
Filed:
Oct. 15, 1987
Applicant:
Inventor:
George K Lewis, Andover, MA (US);
Assignee:
Analogic Corporation, Peabody, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
12866007 ;
Abstract
An ultrasonic medical imaging apparatus provides an ultransonic transducer constructed with polyvinylidene fluoride. Circuitry is included for generating an energizing pulse for the transducer, the pulse having a predetermined period and an instantaneous frequency which is varied from a first frequency to a second frequency during the period. Circuitry is provided for digitizing electrical signals from the transducer which electrical signals represent ultrasonic reflections received by the transducer in response to the energizing pulse, and a signal processor cross-correlates the digitized electrical signals with the energizing pulse.