Patent ID: 6383168
Filing Date: 2002-05-07
Classification: A61M

Abstract:
A cartridge and nozzle assembly for use in a needleless injection system, comprising:a cartridge having a plunger disposed at a rearward end thereof, and including an inner portion with a throat at a forward portion thereof, the cartridge further including a generally laterally extending interface surface; a displaceable outlet valve initially disposed within the throat, the outlet valve having a channel-less valve body; a nozzle for receiving the cartridge, the nozzle defining a rearward, cartridge-receiving portion, and including a forward portion defining a valve-receiving portion with a plurality of channels and an injection orifice defined therein, the forward portion being configured to receive the valve when the valve is displaced to a forwardly disposed position, so that when the outlet valve is displaced from the throat into the valve-receiving portion of the nozzle, the inner portion of the cartridge has fluid access to the orifice via the channels, the nozzle further including a generally laterally extending interface surface which abuts the cartridge interface surface; and a seal disposed between the cartridge and the nozzle rearward of the interface surfaces for at least reducing leakage of injectate therebetween.