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, 1994
Filed:
Nov. 17, 1992
Applicant:
Inventor:
Peter Stasz, Moundsview, MN (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
128724 ; 128716 ;
Abstract
A breathing sensor comprising a thin flexible compliant film transducer exhibiting piezoelectric and pyroelectric properties. The transducer preferably comprises a thin film of polyvinylidene fluoride (PVDF) having a pattern of metallization on the opposed surfaces thereof defining electrodes. The transducer is designed to be affixed proximate a person's airway such that the tidal flow of inspired and expired air will impinge upon the transducer. It is adapted to be coupled to electronic circuitry for indicating normal breathing, for providing an alarm in the event of sleep apnea and for providing an indication when sound related to respiratory distress is present.