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:
Jun. 01, 1999
Filed:
Nov. 04, 1997
Applicant:
Inventors:
Kenneth L Watkin, Deaconsfield, CA;
Lucie Lessard, Verdun, CA;
M Souheil El-Hakim, Montreal, CA;
Mohammed M Elahi, Brampton, CA;
Assignee:
Martinex R & D Inc., Montreal, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
600438 ;
Abstract
The thickness of bones of the skull is determined in vivo employing ultrasonic waves which are transmitted into the bone; reflected echoes of the transmitted waves are converted into electrical signals and the signals are windowed to identify a zone embracing the bone thickness; a power spectrum is developed of each electrical signal of the windowed zone; the power spectrum is differentiated to provide a plot of frequency and amplitude and the distance between adjacent peaks of the wave plot is measured from which the bone thickness can be computed.