Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1988-12-14
1990-06-19
Yasko, John D.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604241, A61M 532
Patent
active
049350153
ABSTRACT:
A hydopermic needle apparatus includes a barrel having an internal chamber, a plunger mounted in said chamber and adapted to be movable both axially and rotatably within the chamber, and a needle mechanism. The barrel includes a collar at a tip thereof having an internal bore and having first and second threaded connector fittings separated by a stop within the bore. The plunger has, at one end theroef, a hub extending outwardly toward the needle mechanism. The needle mechanism includes a base with a needle extending therefrom and having an internal cavity that opens opposite the needle. The base also includes a third connector fitting adapted to mate with either of the first or second fittings within the collar. The plunger hub is adapted to snugly fit within the cavity of the needle mechanism base such that the base will frictionally engage the hub for positioning of the third connector fitting within the interior most of the first or second connector fittings and thereafter be disengageable from the cavity by axially withdrawing the plunger. The process can be reversed in order to dismount the needle mechanism from the collar and withdraw or retract the needle mechanism into the barrel chamber. A plug is provided to cap the collar, when the needle mechanism is positioned within the barrel chamber, and prevent flow of fluids or passage of the needle through the collar bore.
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