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:
Nov. 09, 1999
Filed:
Nov. 08, 1996
Brian P Brockway, Arden Hills, MN (US);
Robert V Brockway, Maple Grove, MN (US);
Data Sciences International, Inc., St. Paul, MN (US);
Abstract
A method obtains physiologic parameter information of an animal or human, such as respiratory tidal volume, from a blood pressure signal from an implanted blood pressure sensor in the animal or human. Specifically, the blood pressure signal is externally signal processed to develop an amplitude versus time waveform. A sequence of selected blood pressure features derived from individual cardiac cycles of the amplitude versus time waveform over a selected time interval are extracted from the developed amplitude versus time waveform. A mathematical model is fitted to the extracted sequence of selected blood pressure features to yield a fitted mathematical model. Blood pressure information indicative of a magnitude of the change in blood pressure that occurs over a respiratory cycle is computed from the fitted mathematical model. The physiologic parameter respiratory tidal volume, is then computed as a function of a correction factor and the blood pressure information.