Anticoagulant metering device and method

Details Anticoagulant metering device and method Anticoagulant metering device and method

A - Human Necessities

61

M

128/106

A61M 1/00 (2006.01) A61M 39/22 (2006.01) A61M 1/36 (2006.01)

Patent

CA 1073302

Abstract of Disclosure An aspiration wand assembly having an associated metering valve for metering liquid anticoagulant to blood aspirated by the wand. The metering valve includes a flexible diaphragm normally obstructing conduit which transmits anticoagulant from a remote source to the tip of the aspiration wand. An orifice communicates the diaphragm with the interior of the aspiration wand so that various negative pressures in the wand correspond- ingly draw the diaphragm into any one of a plurality of positions away from the obstructing position.

243420

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