Patent ID: 7252651
Filing Date: 2007-08-07
Classification: A61M

Abstract:
1. A bolus injection device, comprising: a housing having a first end defining a first opening; a plunger being slidably received within the first opening of the housing to move between first and second positions, the plunger having a bottom surface adapted to be brought into contact with the skin of a subject and a prong disposed on the plunger extending into the housing at least when the plunger is in the first position, and the plunger at least partially extending out of the first opening at least when the plunger is in the first position; a resilient member biasing the plunger into its first position; a cartridge disposed in the housing and having an interior serving as a reservoir for a drug, the cartridge being moveable between first and second positions; and a delivery needle disposed on a needle carrier wherein the needle carrier is disposed within and fixedly and non-movably attached to the housing, the needle carrier arranged in the first opening of the housing, wherein the cartridge is moveable relative to the delivery needle with the delivery needle being in fluid communication with the reservoir when the cartridge is in its second position and the delivery needle not being in fluid communication with the reservoir when the cartridge is in its first position, wherein the plunger is moved against the force of the resilient member to its second position to expose the delivery needle to the skin of the subject and to actuate movement of the cartridge from its first position to its second position.