Disposable injector with dual-piston dual-chamber system

Details Disposable injector with dual-piston dual-chamber system Disposable injector with dual-piston dual-chamber system

2011-06-14

2011-06-14

Lucchesi, Nicholas D (Department: 3763)

Surgery

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

Treating material introduced into or removed from body...

Reexamination Certificate

active

07959599

ABSTRACT:
The invention relates to a disposable injector with a housing, an injector-side, first cylinder-piston unit—at least intermittently fillable—arranged thereon and an upstream detachable container adapter, wherein the container adapter bears a likewise at least intermittently fillable second cylinder-piston unit. A solvent is stored in the first cylinder-piston unit. In the second cylinder-piston unit there is a freeze-dried active pharmaceutical ingredient. Immediately before use of the disposable injector the solvent is conveyed to the second cylinder-piston unit to the active pharmaceutical ingredient, where a solution forms. This solution is transfer-pumped into the first cylinder-piston unit to then be administered.The present invention develops a disposable injector which stores a liquid and an active ingredient in each case separately and sterilely and provides a space in which the active ingredient is dissolved for application in the liquid or mixed with the liquid.

REFERENCES:
patent: 5641010 (1997-06-01), Maier
patent: 2003/0055376 (2003-03-01), Delay
patent: 2009/0281496 (2009-11-01), Matusch
patent: 2010/0036326 (2010-02-01), Matusch
patent: 2010/0076373 (2010-03-01), Matusch
patent: 2010/0076379 (2010-03-01), Matusch
patent: 2010/0100040 (2010-04-01), Matusch
patent: 2010/0106084 (2010-04-01), Matusch
patent: 2010/0262125 (2010-10-01), Matusch
patent: 19 13 926 (1970-09-01), None
patent: 0 692 235 (1996-01-01), None
patent: WO 96/19252 (1996-06-01), None

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