Patent 7263396 was granted and assigned to Cardiodigital Limited on August, 2007 by the United States Patent and Trademark Office.
A sensor assembly for monitoring physiological characteristics interfaces to a subject's ear. The sensor assembly has a projection that projects into the subject's concha. The projection may have a notch to accommodate the subject's anti-tragus. A clip connected to the projection holds a sensor against the subject's lobule. The sensor may comprise a pulse-oximetry-type sensor.