초록 ▼

An improved drug dispenser for the pulsatile or peristaltic delivery of drugs. The drug dispenser includes a fluid reservoir for storing the drug to be dispensed, an electrochemical pump for pumping the drug from the fluid reservoir, and a pump valve responsive to the pump pressure such that when th

An improved drug dispenser for the pulsatile or peristaltic delivery of drugs. The drug dispenser includes a fluid reservoir for storing the drug to be dispensed, an electrochemical pump for pumping the drug from the fluid reservoir, and a pump valve responsive to the pump pressure such that when the pump pressure reaches some predetermined value, the pump valve releases the pressure exerted upon the drug. The result is a low cost, low weight ad efficient drug dispenser for the pulsatile delivery of drugs.

대표청구항 ▼

An electrochemically-driven pulsatile drug dispenser, comprising: a pump chamber having a pump inlet and a pump outlet; an electrochemical pump for pumping a motive fluid, said electrochemical pump having a motive fluid inlet and a motive fluid outlet; pressure transmission means disposed between sa

An electrochemically-driven pulsatile drug dispenser, comprising: a pump chamber having a pump inlet and a pump outlet; an electrochemical pump for pumping a motive fluid, said electrochemical pump having a motive fluid inlet and a motive fluid outlet; pressure transmission means disposed between said pump chamber and said motive fluid outlet, said pressure transmission means being displaced in response to pressure of said motive fluid at said motive fluid outlet; and a pump valve having a valve inlet in fluid communication with said motive fluid outlet and a valve outlet in fluid communication with said motive fluid inlet, said pump valve being responsive to said motive fluid pressure whereby said pump valve releases said motive fluid pressure exerted upon said pressure transmission means when said motive fluid pressure reaches a predetermined value, wherein the pump valve includes: a pump valve seat; and a pump valve diaphragm having a perforation, wherein the pump valve diaphragm moves upward from the pump valve seat and, at the predetermined value, snaps open and releases the pump pressure through the perforation.