Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1998-08-13
2000-08-29
McDermott, Corrine
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604 97, 604 99, 604181, A61M 5315
Patent
active
061101516
ABSTRACT:
An inflation device according to the present invention includes a barrel, a piston at least partially disposed within the barrel, and a collar surrounding at least a portion of the barrel. The piston includes a threaded portion. The collar and the barrel are axially movable with respect to one another, with the barrel being biased towards an equilibrium position within the collar by a collar spring. A nut is disposed at least partially within the barrel, the nut including an interior threaded surface and an exterior camming surface. The nut is movable along an axis substantially transverse to the barrel axis, and is biased towards a collar camming surface by a nut spring. When the barrel is in the equilibrium position, the nut is in a locking position in which the interior threaded surface engages the threaded portion of the piston. This prevents free movement of the piston within the barrel. When the barrel is moved from the equilibrium position the collar camming surface deflects the nut so that the piston is freely movable within the barrel.
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Hart Colin
Kirk, III Karl Dallas
Mulhauser Paul J.
Spool Ira
Wadleigh Glenn H.
McDermott Corrine
Namic USA Corporation
Rodriguez Cris L.
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