Multi-Chamber Ampoule with Bypass and Piston Seal
AssigneeTecPharma Licensing AG
InventorsFritz Kirchhofer, Christoph Rindlisbacher
Life of this patent
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Abstract
A multi-chamber ampoule including a housing with a longitudinal axis, at least one bypass operably associated with the housing, at least one front and one rear piston both of which can engage with the housing in a sealing manner outside the vicinity of the bypass and both of which may be displaced along the longitudinal axis, wherein the rear piston includes at least one material which can project into the bypass when the rear piston is in the region of the bypass.
Claims16
A multi-chamber ampoule comprising:
- a housing with a longitudinal axis,
- a bypass structure associated with the housing,
- a front piston displaceable along the longitudinal axis, and
- a rear piston displaceable along the longitudinal axis and comprising a material that can move at least partially into the bypass structure when the rear piston is located in the region of the bypass structure.
A multi-chamber ampoule comprising a housing with a longitudinal axis, a bypass operably associated with the housing, a first piston and a second piston, both pistons displaceable along the longitudinal axis and both engaging the housing in a sealing manner outside the vicinity of the bypass, wherein the second piston comprises a material which blocks the bypass when the second piston is in the region of the bypass.
A multi-chamber ampoule comprising:
- a) a housing with a longitudinal axis,
- b) a bypass associated with the housing,
- c) a front piston and a rear piston, the rear piston displaceable along the longitudinal axis and, outside the region of the bypass, contacting the housing in a sealing manner, wherein
- d) the rear piston comprises a material that can enter the bypass when the rear piston is located in the region of the bypass.
Dependencies are inferred from the claim text.