Patent ID: 7083590

Claim:
Dispensing apparatus for retention in a body cavity of a target mammal and for dispensing multiple materials in the body cavity, said dispensing apparatus comprising a housing, a primary reservoir with a primary outlet from the housing, a secondary reservoir with a secondary outlet from the housing, a primary piston, a secondary piston, said primary piston being directly contactable with said secondary piston and said primary piston expressing a material in said primary reservoir out of said primary outlet, said secondary piston expressing a material in the secondary reservoir out of said secondary outlet, a force generator to act on said primary piston and actuable to cause movement of the primary piston to cause expression of the material in said primary reservoir from the primary outlet, said movement of said primary piston causing partial expression of the material of the primary reservoir prior to said direct engagement with said secondary piston, and engagement of said primary piston with said secondary piston causing movement of said secondary piston to cause co-expression of the material in the primary reservoir and the secondary reservoir from the primary outlet and the secondary outlet, respectively.