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:
Jun. 15, 1999
Filed:
Jan. 24, 1992
Kenneth W Rake, Laguna Niguel, CA (US);
Orvil L Judge, Orange, CA (US);
Donald M Earhart, Irvine, CA (US);
I-Flow Corporation, Lake Forest, CA (US);
Abstract
An infusion pump formed by a fluid containing shell and a pressurizing shell. A conical helical spring is attached within the pressurizing shell. A circular fluid bag with an outlet tube is placed within the fluid containing shell. The bottom of the fluid containing shell is contoured to match the contour of the fluid bag. The fluid containing shell and the pressurizing shell are threadably received within one another so that by screwing the shells together the spring is compressed to pressurize the fluid bag. A platen distributes the force of the spring over a substantially flat area of the bag.