초록 ▼

A low-profile multipathway automatic drug delivery system utilizing a battery powered control pad coupled to a disposable drug storage and delivery system and strapped to a patient's limb or torso. A preprogrammed or on-demand drug administration sequence is input to the control pad. When a drug is

A low-profile multipathway automatic drug delivery system utilizing a battery powered control pad coupled to a disposable drug storage and delivery system and strapped to a patient's limb or torso. A preprogrammed or on-demand drug administration sequence is input to the control pad. When a drug is to be administered, the control pad ignites a high energy density propellant charge in the drug delivery system. Expanding propellant gas exerts pressure on a drug in a second chamber and forces it from the storage reservoir. Depending upon the type of drug delivery system required for the drug being administered, the propellant will either: (i) force a hypodermic needle into a patient's muscle tissue, propel the drug in the storage container into the needle embedded in the patient, and withdraw the needle; (ii) force the drug from the storage container through a jet nozzle where the drug is injected into subcutaneous tissue; (iii) force the drug from the storage container into a patch for passive transdermal delivery; (iv) force the drug into a patch for iontophoretic transdermal diffusion; or (v) force together two drugs stored separately that are unstable when mixed, and then administer them through one of the methods described in steps (i) to (iv).

대표청구항 ▼

[ What is claimed is:] [1.] A multipathway automatic and on-demand drug delivery system for multiple administrations at selectable dispensing times of at least one type of drug, said system comprising:a plurality of drug storage and delivery means wherein each has at least one drug storage reservoir

[ What is claimed is:] [1.] A multipathway automatic and on-demand drug delivery system for multiple administrations at selectable dispensing times of at least one type of drug, said system comprising:a plurality of drug storage and delivery means wherein each has at least one drug storage reservoir and an actuable drug delivery system which receives a signal causing the drug delivery system to eject the at least one type of drug from the at least one drug storage reservoir, said plurality of drug storage and delivery means comprising:a plurality of generally hollow dual-chambered delivery pods having an enclosed top face and bottom face, and where the chambers are generally arranged as an upper chamber and a lower chamber;the upper chamber which functions as a propellant chamber having a ceiling a combustible propellant charge in the propellant chamber which is proximate to the ceiling;an ignition means for igniting the combustible propellant charge;a piston located between the propellant chamber and the lower chamber, wherein said piston has generally flat top and bottom faces;the lower chamber functioning as a drug reservoir chamber situated beneath the piston, having the piston as a ceiling, a puncturable membrane associated with said drug reservoir chamber; andan 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;a drug storage and delivery module which holds the plurality of drug storage and delivery means in position until ejection of the at least one type of drug therefrom;a securing means for coupling the drug storage and delivery module to a patient; anda control means which is coupled to the drug storage and delivery module and which transmits the signal causing the drug delivery system to eject the at least one type of drug at the selectable dispensing times.