US 7,597,666 B2 · Access pressure ratio device and testing method

Abstract

The present invention discloses a detection device for detecting irregular intravascular pressure, the device including an analyzer for automatically analyzing intravascular pressure upstream of the suspected location of irregular blood flow, and a comparing device that correlates the recorded intravascular pressure to a standard whereby variation in the intravascular pressure during multiple tests is indicative of irregular blood flow. Also disclosed is a system for providing a warning of potential health problems due to irregular blood flow, the system including a detecting device as set forth above and a communicating device operatively connected to the detecting device for communicating a warning when the device indicates an irregularity of intravascular pressure during at least two uses of the device.

Claims12

Dependent claims

A detection device for detecting intravascular pressure in a person, said device comprising:

analyzing means for automatically deriving venous access pressure (VAP) in proximity of a suspected location of a blood flow restriction and determining a ratio of VAP to mean arterial pressure, where analyzing means determines multiple VAP values over multiple time periods and determines multiple ratios, one for each VAP value, and
detecting means for comparing each ratio to a standard ratio, where the detecting means detects the blood flow restriction only when elevation of the ratio above the standard ratio over a series of consecutive comparisons is indicated.

Dependencies are inferred from the claim text.

Facts

Application

10/516,389Filed 29 Jul 2002 · us provisional application

Priority

30 Jul 2001

Published

US 2006/0272421 A17 Dec 2006

Granted

6 Oct 2009

Term ends

Not estimatedThe source records don’t support an estimate.

Classification12 codes

A61B 5/413
Detecting, measuring or recording for evaluating the immune or lymphatic systems: monitoring transplanted tissue or organ, e.g. for possible…
A61B 5/021
Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow: measuring…
A61B 5/411
Detecting, measuring or recording for evaluating the immune or lymphatic systems: detecting or monitoring allergy or intolerance reactions to an…
A61M 1/3639
Extra-corporeal blood circuits: blood pressure control, pressure transducers specially adapted therefor

Access pressure ratio device and testing method

Life of this patent

Access pressure ratio device and testing method

Life of this patent

Abstract

Claims12