Interference No. 103,197
on finger probe. The Nellcor probe was modified by exposing
the two LEDs and the detector and using epoxy to bond one end
of one fiber to the detector and one end of the other fiber to
the two LEDs. The other end of each fiber was loosely70
inserted into a respective hypodermic needle, with the end of
each fiber extending slightly from the needle. Dr. Morrison
then held both needles close together in his right hand
between the thumb and forefinger and inserted their ends71
through and under the skin of his left forearm such that the
fiber ends were spaced apart about one or two millimeters
while under the skin surface. Dr. Morrison explained that
[i]n this configuration, light was sent down one optical
fiber from the emitter of the Nellcor probe and passed
through the perfused tissue in my forearm and then the
signal passed through the other optical fiber in my
forearm to return through the detector of the Nellcor
adult finger probe. This return optical signal was
displayed on the Nonin oximeter monitor, which indicated
that an acceptable level of oxygen saturation for an
adult human, e.g., 97% to 100%, was measured. [MR 85, ¶
25.]
Helen Morrison also mentions the presence of a motion artifact
and gives the range as 95% to 100%: "Although there was a
J. Morrison,. MR 261:4-6.70
J. Morrison, MR 242:23 to 243:4.71
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