Patent ID: 6174300
Filing Date: 2001-01-16
Classification: A61M,Y10S

Abstract:
A device for use in infusing medicinal fluid into a patient at a controlled rate comprising:(a) a housing having a rigid surface and including a base defining a heat sink and a cover superimposed over said base;(b) distendable means for forming, in conjunction with said rigid surface of said housing, a fluid reservoir having an inlet and an outlet, said distendable means comprising at least one distendable membrane at least a portion of which is movable within said housing from a first position to a second position;(c) heat expandable means disposed within said housing between said heat sink and said cover and in proximity to said distendable membrane, said heat expandable means comprising a semi-solid, which, upon being heated, will act upon said distendable membrane to move said membrane toward said second position to cause fluid within said reservoir to flow outwardly of said outlet of said reservoir; and(d) infusion means in communication with said outlet of said reservoir for infusing fluid from said fluid reservoir into the patient.