DRUG DELIVERY DEVICE WITH COMPRESSIBLE FLUID CHAMBERS

摘要

A drug delivery device utilizing compressible fluid chambers for actuation is disclosed. The device includes a compressible dispensing chamber situated in a first compartment and a compressible filler-fluid chamber in flow communication with the first compartment. The compressible dispensing chamber is attached with a reciprocating plunger for dispensing the drug fluid. The drug chamber is refillable with a refill container that uses a compressible pouch containing the refill drug fluid. The refilling process is failsafe enabled by the insertion of the refill container needle only at the correct position to activate an internal contact switch. The compressible-wall configurations enable low dispensing forces without leakage of the drug fluid.

主权项

1. A drug delivery device comprising:
housing walls; a compressible dispensing chamber containing a drug fluid having t first outlet and an enclosed first base, said compressible dispensing chamber being situated inside a first compartment supported by the housing walls with the first base attached to a plunger; and a driver for imparting forward and backward movements of the plunger, said forward movement for moving the drug fluid toward the first outlet.