The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 02, 1995
Filed:
Dec. 15, 1993
Simon W Thomas, New Haven, CT (US);
William R Pruehsner, Meriden, CT (US);
Corometrics Medical Systems, Inc., Wallingford, CT (US);
Abstract
A fetal pulse oximetry sensor device containing a pulse oximetry sensor is disclosed. The device also includes a spiral for fetal attachment. One or both of the light emitting portion and light detecting portion of the pulse oximetry sensor is spring biased to be moveable with respect to the body of the device. Alternatively, the light emitting portion and light detecting portion may be mounted within the housing of the device, with the housing being spring biased towards the fetal skin. In this manner, the pulse oximetry sensor is maintained in intimate contact with the fetal tissue. This provides for accurate oximetry measurements since the errors due to the detection of unattenuated or non-absorbed light passing directly from the light emitter to the light detector, are significantly reduced. The fetal attachment spiral may also include a fetal EKG electrode, in which case the device may be used as both a fetal pulse oximeter and a fetal heart rate monitor.