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 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 st

[ What is claimed is:] [1.] 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.