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. 17, 2006
Filed:
Dec. 09, 2003
Robert R. Steuer, Pleasant View, UT (US);
David A. Bell, Farmington, UT (US);
David R. Miller, Morgan, UT (US);
Robert R. Steuer, Pleasant View, UT (US);
David A. Bell, Farmington, UT (US);
David R. Miller, Morgan, UT (US);
Hema Metrics, Inc., Kaysville, UT (US);
Abstract
An optical sensor includes photoemitter and photodetector elements at multiple spacings (d, d) for the purpose of measuring the bulk absorptivity (α) of an area immediately surrounding and including a hemodialysis access site, and the absorptivity (α) of the tissue itself. At least one photoemitter element and at least one photodetector element are provided, the total number of photoemitter and photodetector elements being at least three. The photoemitter and photodetector elements are collinear and alternatingly arranged, thereby allowing the direct transcutaneous determination of vascular access blood flow.