Appeal No. 2006-1844 4
Application No. 10/080,292
discharge portions each composed of one circumferential row
of equidistant ports. Since the pressure drop at any one
discrete row or discharge portion should be the same, we
infer that Verreet discloses many radially extending
treatment zones of substantially cylindrical shape. While
the pressure drop experienced by the various discharge
portions is not the same, this is not required by the
independent claim 17.
The disclosure of Donadio is directed to methods of
making catheters and stents and the catheters and stents
made thereby. The examiner directs our attention to Figures
6-10 where the distal ends of catheters are shown. Taking
Figure 9 as an example, several circumferential rows of
rectangular perforations 52 are shown. Since each
circumferential row of perforations 52 experiences the same
pressure drop or “head”, each circumferential row comprises
a discharge portion wherein the dispensed fluids form a
substantially uniform cylindrical pool.
Siramanne discloses a percutaneous catheter assembly
with a catheter housing 12 and a dilator 20 intended for
long term use of several days. The catheter housing is of a
size to receive the dilator. Both elements have proximal
and distil ends and a set of perforations 36 and 70
respectively. The perforations are located so that the
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