Patent ID: 7766656

Claim:
A delivery device for medicament, comprising: a cartridge housing a reservoir containing a unit dose of medicament; a handpiece with a cavity removably receiving the cartridge, the handpiece including a retaining lip at a distal end thereof facilitating retention of the cartridge within the cavity; an ultrasonic element disposed in the handpiece; an ultrasonic tip in fluid communication with a distal end of the cartridge projecting through an opening at the distal end of the handpiece, the ultrasonic element being disposed between the distal end of the cartridge and the ultrasonic tip; a source of a first motive fluid in fluid communication with a first passage in the handpiece; a first port in the cartridge for connecting the first passage to the reservoir for supplying the first motive fluid to displace medicament from the reservoir though a channel in the ultrasonic tip; a flow path in the ultrasonic element in fluid communication with the reservoir and the channel in the ultrasonic tip; and an electrical circuit through the cartridge for supplying power from an electrical connection in the handpiece to an electrical connection in the ultrasonic element.