Interference No. 103,197
that conducts it to the distal end. The return signal is
passed
through appropriate filters (640- and 805-mF wavelength)
and is incident on a photodetector.
The bottom of page 190 includes two equations showing how
oxygen saturation can be obtained from the returned signal.
Figure 7.18 (p. 191) shows three different distal ends
for a fiber optics oximetry catheter. Of the three optical
configurations shown in Figure 7.18 (p. 191), the most
relevant to claim 28, because it recites an I-I device, is the
"transmission type" configuration shown in Figure 7.18(c),
which measures radiation transmitted through the volume of
cardiac or vascular blood in the region of the notch near the
distal end. Though Kapany does not state how these fiber33
optics oximetry catheters are introduced into the body to
reach the target cardiac chamber or vessel, it is apparent
that they are to be inserted through a sheath or hollow
catheter that extends into
We assume that Mannheimer’s failure to argue that this33
device anticipates Buschmann claim 28 is due to his agreement
with the Buschmann and the APJ that the term "tissue" as used
in that claim excludes oximetric analysis of blood by a device
located in a cardiac chamber, artery, or vein.
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