Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1984-08-13
1986-07-08
Truluck, Dalton L.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
215355, A61M 500
Patent
active
045990824
ABSTRACT:
A two-component syringe includes a barrel having a chamber for retaining fluid and a distal end of the barrel having a passageway therethrough communicating with the chamber. A by-pass stopper is slidably positioned in fluid-tight engagement inside the barrel. The stopper has a distal rib contacting the barrel, a recess on the proximal side of the rib and a groove in the rib for allowing fluid communication between the recess and the chamber. This groove is positioned angularly with respect to the longitudinal access of the barrel so that liquid passing therethrough is directed angularly with respect to the longitudinal axis of the barrel. The barrel also includes a raised peripheral portion serving as a by-pass and defining a by-pass zone. The by-pass zone is shorter than the length of the stopper along the longitudinal axis of the barrel. The by-pass is sufficiently long and raised enough to allow liquid to flow around the stopper between the proximal end of the stopper and the recess when the proximal end of the stopper is positioned in the by-pass zone. Also included is a piston slidably positioned in fluid-tight engagement inside the barrel. This piston is adapted to engage a plunger rod to facilitate its operation.
REFERENCES:
patent: 2549417 (1951-04-01), Brown
patent: 2591046 (1948-10-01), Brown
patent: 2607341 (1948-12-01), Brown
patent: 2607344 (1952-09-01), Brown
patent: 3330282 (1964-09-01), Visser et al.
patent: 3477431 (1969-11-01), Waleka
patent: 3941128 (1976-03-01), Baldwin
patent: 4226236 (1980-10-01), Genese
patent: 4394863 (1983-06-01), Bartner
patent: 4439184 (1984-03-01), Wheeler
patent: 4496344 (1985-01-01), Kamstra
Becton Dickinson and Company
Kaechele Karen
Truluck Dalton L.
Voellmicke John L.
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