Patent ID: 8632504
Filing Date: 2014-01-21
Classification: A61M,B65B

Abstract:
1. A drug dispensing device comprising: a housing containing a drug to be dispensed, the housing having a first end defining a first opening; a plunger, positioned within the housing, in contact with the drug; a first sealing element providing a first closure seal across the first opening of the housing; and a pusher initially located on an opposite side of the first seal to the plunger, wherein the pusher is operable to break the first closure seal and move the plunger within the housing to dispense the drug; wherein the plunger does not form a closure seal with the housing, wherein a peripheral portion of the plunger in contact with a wall of the housing comprises a substantially non-elastomeric material, and wherein the plunger forms a cup seal with the housing.