US Patent No: 6,278,894

Number of patents in Portfolio can not be more than 2000

Multi-site impedance sensor using coronary sinus/vein electrodes

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Abstract

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A method and apparatus for performing impedance plethysmography on a living heart for diagnostic and therapy purposes involves placement of plural leads where at least one is disposed within a coronary vein traversing the myocardium on the left side of the heart with another lead having plural electrodes thereon disposed in the right ventricle. By appropriate selection of electrodes on the first and second leads for driving with an AC carrier signal and other such electrodes coupled to a sensing amplifier, an impedance vs. time signal can be derived that when signal processed provides useful information concerning cardiac performance. The multi-site impedance sensing has been found to yield more robust data especially in patients having CHF.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
CARDIAC PACEMAKERS, INC.ST PAUL, MN2938

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kadhiresan, V A Lino Lakes, MN 5 712
Nugent, Kevin G Minneapolis, MN 3 634
Salo, Rodney W Fridley, MN 186 5573

Cited Art Landscape

Patent Info (Count) # Cites Year
 
CARDIAC PACEMAKERS, INC. (6)
4,686,987 Biomedical method and apparatus for controlling the administration of therapy to a patient in response to changes in physiologic demand 227 1982
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5,036,849 Variable rate cardiac pacer 121 1990
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MEDTRONIC, INC. (2)
5,501,702 Time sharing multipolar rheography apparatus and method 78 1994
5,836,976 Cardioversion energy reduction system 120 1997

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
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CAMERON HEALTH, INC. (43)
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BIOPHAN TECHNOLOGIES, INC. (19)
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Other [Check patent profile for assignment information] (1)
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