Sequential delivery syringe

Details Sequential delivery syringe Sequential delivery syringe

1991-07-15

1992-04-07

Rosenbaum, C. Fred

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604191, A61M 3700

Patent

active

051023881

ABSTRACT:
The syringe of the invention segregates various fluids or solutions within separate compartments of its barrel, to be delivered in a specific sequence as they are expelled from the delivery tip by actuation of its plunger. A plurality of stoppers are incorporated within the barrel, with all but the one adjacent to the plunger includng a piercing device to penetrate each following stopper in sequence. The length of the piercing shaft of each such device is selected sufficient to pierce the stopper advancing towards it, yet not so long as to reach the piercing shaft of that advancing stopper.

REFERENCES:
patent: 3785379 (1974-01-01), Cohen
patent: 3911916 (1975-10-01), Stevens
patent: 4044758 (1907-08-01), Patel
patent: 4055177 (1977-10-01), Cohen
patent: 4424057 (1985-01-01), House
patent: 4643721 (1987-02-01), Brunet
patent: 4820286 (1989-04-01), van der Wal

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