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:
Aug. 23, 2005
Filed:
May. 02, 2003
Applicant:
Jan W. M. Mijers, Venlo, NL;
Inventor:
Jan W. M. Mijers, Venlo, NL;
Assignee:
Filtertek Inc., Hebron, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K015/14 ; A61M005/14 ;
U.S. Cl.
CPC ...
Abstract
The invention relates to a unidirectional valve appliance, in particular a low pressure check valve for use for an infusion comprising a housing with an inlet and an outlet, and with at least one gasket in a pressure chamber. To prevent air entry into the infusion fluid circuit, the appliance includes an interruption of the flow by means of a static vacuum to the inlet and/or outlet or excess pressure at the outlet. This ensures in reliable manner that a flow of the infusion fluid in a reliable manner only when a static excess pressure differential is exposed to the inlet.