Interference No. 103,270
(CR-11). Coelho then states that prior to the meeting he
conceived of a new procedure for performing a catheter
exchange (CR-12):
That procedure involved provision of a
mechanism to inhibit movement of the
standard length (about 170-185 cm)
indwelling guidewire relative to the guide
catheter and, while maintaining the
guidewire in that position, first
withdrawing the indwelling over-the-wire
catheter, then separating it from the
guidewire and, finally, threading a new
catheter onto the guidewire and advancing
it through the guide catheter and along the
guidewire. I considered several ways of so
engaging the wire, including mechanisms by
which a balloon could be inflated within
the
guide catheter to engage and grip securely
an exposed portion of the guidewire within
the guide catheter.
Coelho further testified that he disclosed and
explained his idea to Enger prior to the meeting (id.). Enger
likewise testified at CR-157 that:
3. Some time before December 2, 1988,
Mr. Coelho disclosed to me an idea that he
had to
facilitate catheter exchange of an over-
the-wire angioplasty catheter without
requiring the use of exchange wires,
extension wires or monorail catheters. He
11
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