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. 17, 2005
Filed:
May. 15, 2003
Yunquan Chen, Delta, CA;
Luya LI, Coquitlam, CA;
Cecil Hershler, Vancouver, CA;
Ryan Peter Dill, Vancouver, CA;
Yunquan Chen, Delta, CA;
Luya Li, Coquitlam, CA;
Cecil Hershler, Vancouver, CA;
Ryan Peter Dill, Vancouver, CA;
VSM Medtech Ltd., Vancouver, CA;
Abstract
A non-invasive apparatus and method for monitoring the blood pressure of a subject detects a pulse signal at both a first and second location on the subject's body The elapsed time between the arrival of corresponding points of the pulse signal at the first and second locations is determined. Blood pressure is related to the elapsed time by relationships such as:ln(),where a and b are constants dependent upon the nature of the subject and the signal detecting devices. The system can be calibrated by measuring a single pair of reference blood pressure and corresponding elapsed time