Systems and methods for infusion of fluids using stored potential energy and a variable flow resistor

US8622976B2 · kind B2 · utility

Assignee

• Pavilion Holdings Group, LLC · US

Inventors

• Lishan Aklog · New York, US
• Brian J. deGuzman · Paradise Valley, US
• Michael Glennon · Braintree, US
• Paul J. Cronin · Allen, US
• William E. Barker · Lewisville, US

Key dates

• Filing date: Mar 4, 2011
• Grant date: Jan 7, 2014
• Expiry date: Nov 23, 2031

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2205/60
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Systems and methods for infusion of fluids using stored potential energy and a variable flow resistor. In one aspect of the present disclosure, there is provided an infusion device that includes a plunger situated within a vessel so as to define a chamber within which a volume of fluid can be accommodated between a downstream surface of the plunger and the vessel. The infusion device further includes an outflow path through which the fluid in the chamber can be dispensed upon displacement of the plunger by a force acting thereon. A variable flow resistor is situated within the outflow path and is configured to allow a substantially constant fluid flow rate from the vessel to be maintained as the force acting on the plunger decreases.