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:
Feb. 27, 2001
Filed:
Dec. 08, 1999
Robert W. Woodard, Frankfort, KS (US);
Other;
Abstract
An I.V. bag is connected to a drip chamber, then to a conventional tube clamp and a regulating tube containing a wick or other material that breaks surface tension of the liquid in the tube, which flows into a bubble separator that forces any remaining entrained air through one or more hydrophobic gas permeable membranes, and then into the patient. A downstream check valve adjacent to the bubble separator prevents back flow into or through the bubble separator. An upstream check valve adjacent to the bubble separator prevents air from being drawn into the bubble separator through its gas permeable hydrophobic membrane. A vent placed adjacent to the tube clamp isolates any pressure drop above the vent, allowing a pressure head to develop in the regulating tube, which insures a constant flow of I.V. liquid into the patient regardless of downstream or upstream hydraulic conditions.