Is a
Patent attributes
Patent Applicant
0
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Haruhiko H. Asada0
Phillip Shaltis0
Date of Patent
September 20, 2005
0Patent Application Number
107347320
Date Filed
December 12, 2003
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A method and an apparatus for distinguishing concentrations of blood constituents among distinct vascular components in situ. The method has steps of inducing periodic vibration, characterized by a frequency, in a limb of a person in such as manner as to selectively excite a resonant response in a specified blood vessel of the person, an artery or a vein, illuminating the limb of the person with a light source, and synchronously detecting a plethysmographic signal for discriminating response attributable to the specified blood vessel.
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