Appeal No. 2001-1472
Application 08/772,878
remove the particles of the calculi through a channel in the
probe. In order to overcome a tendency of prior art ultrasonic
probes to clog because the end of the probe would become embedded
in a calculi/stone and prevent aspiration through the probe,
Brumbach provides one or more slits (64) in the end portion of
the probe or lithotritor needle (26) that engages the stone,
which slits extend a distance of about 1/4 inch from the end face
of the probe and permit irrigant fluid to pass through the
slit(s) even if the end opening of the probe/needle is blocked.
With regard to appellant’s claim 22, Brumbach does not disclose a
power delivery tip having a configuration like that defined in
the last two clauses of the claim.
Manna is directed to an ultrasonic lipectomy probe used for
ultrasonically assisted liposuction procedures wherein fatty
deposits from areas of the human body are liquefied by ultrasonic
energy and the resultant fatty emulsion is then removed from the
body by way of a suction source via channel (26) of the probe.
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