Patent ID: 6458102
Filing Date: 2002-10-01
Classification: A61M

Abstract:
An external infusion device system for infusing a fluid into a patient, the system comprising:a reusable infusion device housing; a gas power source for generating a gas to expel the fluid from a fluid reservoir; and a disposable reservoir that is insertable into the reusable infusion device housing to infuse the fluid into the patient, wherein the disposable reservoir includes: a reservoir housing; a fluid reservoir within the reservoir housing for containing the fluid to be infused into the patient; an outlet in the reservoir housing through which the fluid is expelled to be infused into the patient; an expansion chamber disposed between the gas power source and the fluid reservoir to receive the gas from the gas power source and to expand into a part of the space occupied by the fluid reservoir to expel the fluid from the fluid reservoir; and a regulating valve assembly disposed between the fluid reservoir and the outlet to set a predetermined threshold pressure that must be exceeded to permit fluid to be expelled from the fluid reservoir through the outlet.