Appeal No. 2002-2152
Application No. 08/701,764
The subject matter on appeal relates to a catheter for
emitting x-ray radiation in a vascular system. Further details
of this appealed subject matter are recited in representative
claims 1 and 11, which are the only independent claims on
appeal, reproduced below:
1. A catheter for emitting x-ray radiation in a
vascular system, the catheter comprising:
a flexible catheter shaft having a distal end;
an x-ray unit coupled to the distal end, wherein
the x-ray unit comprises an anode, a cathode, an
insulator having an external surface, and a conductive
coating on the external surface of the insulator,
wherein the anode and cathode are coupled to the
insulator to define a vacuum chamber and the
conductive coating is electrically connected to the
cathode.
11. An x-ray catheter comprising:
a flexible catheter shaft for being advanced
through lumens of the vascular system, the catheter
shaft having a distal end;
an x-ray unit coupled to the distal end, the x-
ray unit comprising an anode, a cathode, an insulator
having an external surface, and a conductive coating
on the insulator, wherein the anode and cathode are
coupled to the insulator to define a vacuum chamber.
The examiner relies on the following prior art references
as evidence of unpatentability:
Forde et al. 1,881,448 Oct. 11, 1932
(Forde)
Parker et al. 5,090,043 Feb. 18, 1992
(Parker)
has been entered for purposes of this appeal. (Advisory action
mailed Mar. 22, 2001, paper 23.)
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