The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 02, 2002
Filed:
Nov. 17, 1999
William H. Burns, Orchard Park, NY (US);
John C. McNeirney, Fairburn, GA (US);
William S. Gibbons, Jr., Winston-Salem, NC (US);
Appro Healthcare, Inc., Buffalo, NY (US);
Abstract
The invention is directed to an improved infusion pump ( ). In the preferred embodiment, the infusion pump is comprised of an elastomeric hollow balloon ( ) and a longitudinal member ( ), the balloon having an axial and radial dimension and an open end ( ), the longitudinal member ( ) having an insertion member ( ) extending into the hollow portion ( ) of the balloon, the insertion member and the balloon being so configured that the insertion member stretches the elastomeric balloon in the radial direction, but does not stretch the balloon in an axial direction, whereby the infusion pump delivers the quantity of liquid at a substantially constant flow rate. The present invention also discloses an infusion pump comprising a hollow inert membrane ( ), an insertion member extending into the hollow portion ( ) of the membrane, and the insertion member and the membrane extending into the hollow portion of the balloon, such that the membrane is between the insertion member and the balloon.