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:
Mar. 10, 2015
Filed:
Jan. 07, 2013
Henry Ford Health System, Detroit, MI (US);
Stanley Frinak, Farmington Hills, MI (US);
Gerard Zasuwa, West Bloomfield, MI (US);
Jerry Yee, Beverly Hills, MI (US);
Anatole Besarab, Bloomfield Hills, MI (US);
John B. Kennedy, Evanston, IL (US);
Douglas S. Curry, West Lafayette, IN (US);
Helen Kimball Hirschman, Evanston, IL (US);
Henry Ford Health System, Detroit, MI (US);
Abstract
A device and method for determining intravascular pressure and irregular needle placement in a hemodialysis procedure include analyzing means for automatically deriving venous access pressure (VAP) at a location of venous needle insertion into the patient and determining a ratio of VAP to mean arterial pressure, where the analyzing means determines multiple VAP values over multiple time periods and determines multiple ratios, one for each VAP value. Detecting means compare each ratio to a predetermined standard ratio derived from a moving average of prior VAP ratios, where the detecting means detects irregular needle placement when elevation of the ratio above the standard ratio is indicated.