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:
Jan. 01, 1991
Filed:
Feb. 16, 1988
Jeffrey S Bopp, Mundelein, IL (US);
James W Voegele, Dundee, IL (US);
George J Stanczak, Chicago, IL (US);
Baxter Travenol Laboratories, Inc., Deerfield, IL (US);
Abstract
A body fluid drainage device that includes a wedge-shaped reservoir evacuator which has a first sidewall and a second sidewall integrally formed and joined along a coextending common edge. A third collapsible bellows-shaped sidewall extends between the nonjoined edges and is sealed to the nonjoined edges of the first sidewall and second sidewall to enclose and form a fluid tight reservoir between the first, second and third sidewalls. An inlet port and outlet port are provided in fluid communication with the reservoir. A one-way valve is provided in the inlet port for permitting fluid flow into the reservoir but preventing fluid flow out of the inlet port. A spring element is provided for storing energy to force the first sidewall away from the second sidewall following compression of the first sidewall towards the second sidewall such that as the first sidewall moves away from the second sidewall a partial vacuum is created within the reservoir for drawing fluid into the reservoir.