Surgery – Truss – Pad
Patent
1988-11-07
1990-05-15
Green, Randall L.
Surgery
Truss
Pad
128754, A61B 1000
Patent
active
049248782
ABSTRACT:
A spring-powered actuating device for operating the obturator and the cannula of a biopsy needle, and a cocking device removably attachable to the actuating device. The actuating device has a manually-operated trigger slide which controls separately the release of spring-powered slides for moving the obturator and the cannula so the surgeon determines the time interval between the release of the obturator and the later release of the cannula. The extent to which the trigger slide can be displaced manually is controlled by a manually adjustable safety slide which may be set in a first position to permit the trigger slide to release the slide for the obturator only and in a second position to permit the trigger slide to release the slide for the cannula. The cocking device, when attached to the actuating device, is movable pivotally toward the actuating device by squeezing them together manually and when so moved it retracts the slides for the obturator and the cannula to stress their springs which power them.
REFERENCES:
patent: 4256119 (1981-03-01), Gauthier
patent: 4378810 (1983-04-01), Ishizaki
patent: 4461305 (1984-07-01), Cibley
patent: 4667684 (1987-05-01), Leigh
patent: 4699154 (1987-10-01), Lindgren
patent: 4733671 (1988-03-01), Mehl
patent: 4735215 (1988-04-01), Goto
Green Randall L.
Shay Randy
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