Multi-wavelength incremental absorbence oximeter
Noninvasive device for photoelectrically measuring the property of arterial blood
Apparatus and method for determining oxygen saturation levels with increased accuracy
Calibrated optical oximeter probe
Method and apparatus for noninvasive monitoring of arterial blood oxygen saturation
Multi-wavelength oximeter having a means for disregarding a poor signal
Surgical retractor and blood flow monitor
Noninvasive reflectance oximeter
ApplicationNo. 970232 filed on 11/14/1997
US Classes:600/323, Oxygen saturation, e.g., oximeter600/328, Hemoglobin600/500, Detecting blood vessel pulsation600/502Pulse indicator
ExaminersPrimary: Cohen, Lee S.
Assistant: Ruddy, David M.
Attorney, Agent or Firm
International ClassA61B 005/00
AbstractIn accordance with the present invention, a transmittance pulse oximeter sensor having an emitter that is offset from the detector. Offsetting the emitter and detector allows more light to pass through a thin tissue pulsating arterial bed than does a vertically aligned design. The offset between the emitter and the detector increases the effective arterial blood component without increasing artifact. Thus, the arterial blood component strength relative to the artifact strength is increased resulting in an improved signal and an improved pulse oximetry reading. The offset pulse oximetry sensor is especially important in veterinary pulse oximeter applications where it is necessary to monitor small animals whose optimal pulse oximetry location is a thin tissue tongue. The offset pulse oximetry sensor is additionally important in the realm of human medicine where often the optimal position for a pulse oximeter sensor is a thin tissue ear or an infant's thin tissue finger or toe.
Field of SearchDetecting blood vessel pulsation
Infrared, visible light, or ultraviolet radiation directed on or through body or constituent released therefrom
Determining blood constituent
Oxygen saturation, e.g., oximeter
And other blood constituents
Measured at specified areas of body portions
Mounting structure (e.g., belt, etc.)
Visible light radiation