Catheter device and method for delivering a dose internally...

Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...

Reexamination Certificate

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C604S164120, C604S164010

Reexamination Certificate

active

07488305

ABSTRACT:
A catheter handpiece apparatus and method for delivering a desired dose with minimal potential for contamination of the injected substance and rapid, accurate delivery of the desired dose. In one embodiment, a carriage assembly affixed to an inner lumen is slidably located within a handpiece housing equipped with an outer lumen. The carriage assembly receives a dose carpule. An actuator knob cocks the carriage assembly and a spring-powered actuator mechanism. After the catheter is maneuvered to a desired injection site and a desired dose is set, depressing a first trigger causes the inner lumen tip to extend beyond the outer lumen into the injection site. Depressing a second trigger causes the actuator mechanism to push the desired dose from the dose carpule through the inner lumen into the injection site. A second embodiment provides a catheter handpiece with a carriage assembly cocking lever and an operator-powered dose delivery mechanism.

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patent: 5336172 (1994-08-01), Bales et al.
patent: 5522797 (1996-06-01), Grimm
patent: 6056728 (2000-05-01), von Schuckmann
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patent: 6802824 (2004-10-01), Mickley et al.
patent: WO 96 16691 (1996-06-01), None
patent: WO 01 87383 (2001-11-01), None

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