Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1988-10-04
1990-02-06
Truluck, Dalton L.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604191, 206204, A61M 500
Patent
active
048985805
ABSTRACT:
A syringe for dispensing a liquid pharmaceutical composition has a first chamber (5), adjacent to nozzle (3), which contains a mositure sensitive solid drug, two movable septa (8,9) which together create a second chamber (6) and a third chamber (7) holding a liquid diluent, and a liquid by-pass passage (19) which can connect the third chamber (7) to the first chamber (5) while by-passing second chamber (6).
A plunger (4) is depressed to move the septum (9) towards the nozzle (3), thereby causing liquid diluent to flow via by-pass passage (19) into the first chamber (5) to mix with the drug.
The second chamber (6) contains moisture sequestering material to insulate the drug from any moisture which might leak through septum (9).
REFERENCES:
patent: 2477926 (1949-08-01), Greaves
patent: 2842223 (1958-07-01), Zall
patent: 3343897 (1967-09-01), Keller
patent: 3459185 (1969-08-01), Bender et al.
patent: 3739947 (1973-06-01), Baumann et al.
patent: 3833406 (1974-09-01), White
patent: 4545492 (1985-10-01), Firestone
patent: 4599082 (1986-07-01), Grimard
patent: 4613326 (1986-09-01), Szwarc
patent: 4716710 (1988-01-01), Galey et al.
Beecham Group p.l.c.
DeFranco Denise W.
Truluck Dalton L.
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