Abstract: The present invention provides a method to diagnostically detect the variants of a given pathogen, such as HIV, hepatitis C, hepatitis B (HBV), Parvovirus B19, etc., with the use of a single detection probe.
Abstract: Improved integrity test, priming sequence and bag height detection tests, apparatuses and methods for a medical fluid delivery system are provided. The integrity test includes a plurality of air pressure decay tests, using positive and negative pressure. The priming sequence includes pumping fluid through a portion of a patient line to be primed to overcome air in the line and other potential obstacles. The head height test measures a pressure build-up or drop-off within a pump chamber of a membrane pump. The measured pressure corresponds to a head height between a fluid supply and the pump or between the pump and a fluid drain. A determination is made whether the corresponding head height is acceptable.
Type:
Grant
Filed:
October 27, 2004
Date of Patent:
August 18, 2009
Assignees:
Baxter International Inc., Baxter Healthcare S.A.
Abstract: Rotary axial peristaltic pumps, related methods and components. The rotary axial peristaltic pump generally comprises a platen having a platen surface, a tube positioned adjacent to the platen surface, cam that rotates about a rotational axis and has a cam surface that is spaced apart from the platen surface and a plurality of tube compressing fingers. The fingers move axially back and forth in sequence to sequentially compress segments or regions of the tube against the platen surface, thereby causing peristaltic movement of fluid through the tube. The fingers move back and forth on axes that are substantially parallel to the axis about which the cam rotates.
Type:
Grant
Filed:
August 26, 2005
Date of Patent:
July 7, 2009
Assignees:
Baxter International Inc., Baxter Healthcare S.A.