MULTIPLE MATERIAL DISPENSING

摘要

A device suitable for use as an intra vaginal device or as a bolus where, after initiation, a primary piston moves with a known movement characteristic and is involved in the stagger release of multiple materials. The primary piston is used to time the discharge of one or more material from at least a primary reservoir and a secondary reservoir (there being separate powering of the timed discharge) or is used to both time and indirectly power the discharge of one or more material from its reservoir, such discharges preferably being in a staggered manner. Optionally the primary piston may cause the expression of a primary material in conjunction with a secondary material (in said secondary reservoir) and then at a later timepoint, whilst still expressing the primary material, express a further second secondary material from a second secondary reservoir.