US Patent No: 6,997,879

Number of patents in Portfolio can not be more than 2000

Methods and devices for reduction of motion-induced noise in optical vascular plethysmography

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Abstract

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Methods and devices are provided for reducing motion artifacts when monitoring volume changes in blood vessels. Light having a first wavelength and light having a second wavelength are transmitted through a human appendage, toward the epidermis of a patient, or through tissue within the body of a patient. A portion of the light having the first wavelength and a portion of the light having the second wavelength is received. A first signal is produced based on the received portion of light having the first wavelength. A second signal is produced based on the received portion of light having the second wavelength. One of the first and second signals is subtracted from the other to produce a plethysmography signal that is representative of volume changes in blood vessels of patient tissue.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
PACESETTER, INC.SYLMAR, CA1797

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Turcott, Robert G Mountain View, CA 21 339

Cited Art Landscape

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Patent Citation Ranking

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