Patent ID: 6165155
Filing Date: 2000-12-26
Classification: A61M,A61N

Abstract:
A method for automatic or on-demand delivery of a drug to a patient, said method comprising the steps of:a) providing a multipathway electronically-controlled drug delivery system comprising a drug storage and delivery module and a control means for activating the drug storage and delivery module to deliver a drug to a patient;b) forming within the drug storage and delivery module a generally hollow dual-chambered delivery pod having an enclosed top face and bottom face, and where the chambers are generally arranged as an upper chamber and a lower chamber;c) forming the upper chamber to function as a propellant chamber having a ceiling, a wall, and a collapsible floor;d) providing a first combustible propellant charge in the propellant chamber;e) providing an ignition means for igniting the combustible propellant charge;f) disposing a piston located between the propellant chamber and the lower chamber;g) forming the lower chamber to function as a drug reservoir chamber situated beneath the piston, said lower chamber having a puncturable floor membrane andh) forming an outlet port beneath the puncturable floor membrane and extending through an aperture in the bottom face of the drug reservoir chamber to enable ejection of the drug therefrom;i) attaching the drug storage and delivery module to a patient; andj) programming the control means to administer the desired drug or drugs in a single, continuous or periodic interval.