US Patent No: 6,540,688

Number of patents in Portfolio can not be more than 2000

Method and system for assessing collateral blood flow to a tissue region of interest

ALSO PUBLISHED AS: 20030073913

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Abstract

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The present invention is directed to a method and system for use in assessing collateral blood flow to a tissue region of interest (ROI). The method includes the steps of obtaining a first pulsatility measurement and a second pulsatility measurement, wherein one of the pulsatility measurements is obtained with a plurality of arteries supplying blood to the tissue ROI and the other pulsatility measurement is obtained with at least a selected one of such arteries substantially occluded. The method further provides for use of the first and second pulsatility measurements to generate a collateral flow value useful to medical personnel as an objective measure in assessing collateral blood flow to a tissue ROI. The method may further include the step of obtaining a check pulsatility measurement after obtaining a first pulsatility measurement and prior to obtaining a second pulsatility measurement, wherein all of the plurality of the arteries are substantially occluded. The check procedure enhances the reliability of a second pulsatility measurement obtained when a selected one of the arteries is substantially occluded.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
DATEX-OHMEDA, INC.MADISON, WI184

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gingrich, Matthew A Westminster, CO 3 0
Pologe, Jonas A Boulder, CO 14 1637

Cited Art Landscape

Patent Info (Count) # Cites Year
 
DATEX-OHMEDA, INC. (6)
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5,503,148 System for pulse oximetry SPO.sub.2 determination 184 1994
5,934,277 System for pulse oximetry SpO2 determination 190 1995
5,766,127 Method and apparatus for improved photoplethysmographic perfusion-index monitoring 140 1996
5,842,979 Method and apparatus for improved photoplethysmographic monitoring of oxyhemoglobin, deoxyhemoglobin, carboxyhemoglobin and methemoglobin 139 1997
5,891,024 Two stage calibration and analyte measurement scheme for spectrophotomeric analysis 131 1997
 
JPMORGAN CHASE BANK, N.A. (2)
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5,833,618 Apparatus and method for measuring an induced perturbation to determine a physiological parameter 282 1995
 
ASAHI MEDICAL CO., LTD. (1)
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CAREFUSION U.K. 286 LIMITED (1)
5,715,826 Method and device for assessing the state of blood vessels 19 1996
 
COLIN MEDICAL TECHNOLOGY CORPORATION (1)
5,671,750 Peripheral blood-flow condition monitor 43 1996
 
Imex Corporation (1)
5,050,613 Method and apparatus for vascular testing 43 1989
 
K-ONE TECHNOLOGIES (1)
5,913,826 Wideband external pulse cardiac monitor 53 1996
 
NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TNO (1)
4,539,997 Method and device for controlling the cuff pressure in measuring the blood pressure in a finger by means of photo-electric plethysmograph 36 1982
 
NELLCOR PURITAN BENNETT INCORPORATED (1)
4,869,253 Method and apparatus for indicating perfusion and oxygen saturation trends in oximetry 214 1986
 
Optelmed Ltd. (1)
5,862,805 Apparatus and method for measuring the variability of cardiovascular parameters 30 1996
 
R2 TECHNOLOGY, INC. (1)
5,095,912 Arterial distensibility measuring apparatus 12 1990
 
RUSH-PRESBYTERIAN-ST. LUKE'S MEDICAL CENTER (1)
4,562,843 System for determining characteristics of blood flow 110 1981
 
Other [Check patent profile for assignment information] (1)
5,301,675 Apparatus for measuring blood flow velocity and blood flow volume in aortas 16 1992

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