Patent ID: 6033384
Filing Date: 2000-03-07
Classification: A61F,A61M,B05B

Abstract:
A system for dispensing medicament, which comprises:a vial for holding a volume of medicament;an elastic, deformable body portion in fluid communication with said vial and containing a piston mechanism and a dosage cavity of a predetermined volume for collecting medicament from said vial, said piston mechanism being operationally coupled to said deformable body portion to move along longitudinal axis of the body portion in concert with deformation of the body portion along its longitudinal axis;a nozzle portion connected to said deformable body portion for allowing discharge of said medicament collected in said dosage cavity;a housing retaining said vial, said deformable body portion and said nozzle portion, said housing having an anterior wall with an aperture for receiving said nozzle portion, said nozzle portion, said body portion and said vial being arranged substantially linearly in that order along a longitudinal axis of the housing from an anterior end of the housing to a posterior end of the housing;a trigger operationally coupled to said housing for actuating, by a single actuating motion of said trigger, said dispensing system to sequentially fill said dosage cavity with medicament from said vial and subsequently discharge said medicament from said dosage cavity;a lever operationally coupled to said trigger and releasably engaging said deformable body portion when said body portion is in ambient position, said lever being movable to a first non-ambient position in concert with a first phase of said actuating motion of said trigger and deforming at least a portion of said deformable body portion, and moving said piston mechanism, along the longitudinal axis towards the posterior end of said housing, said movement of said piston mechanism causing flow of medicament from said vial to said dosage cavity to fill said dosage cavity; anda release arm internally positioned in the housing to oppose said lever at said first non-ambient position so as to disengage said lever from said deformable body portion upon continuation of said actuating motion into a second phase, wherein said deformable body portion returns to said ambient position upon disengagement from said lever and said piston mechanism moves in concert with said deformable body portion towards said nozzle portion to pressurize medicament in said dosage cavity and discharge said medicament through said nozzle portion.