FIELD: medical engineering.
SUBSTANCE: device is designed as flexible hose segment of flat cross-section enveloping base member manufactured as circular or oval ring. The opposite end is left free. The valve has an additional member like supporting plate (contour frame or contour loop) rigidly fixed on the base member and embraced with free end of the flexible hose. To achieve better conditions for blood flow to wash working member surface, the member is perforated in zone of its attachment to the base member. To achieve better biocompatibility conditions, valve member is manufactured from natural patient blood vessel.
EFFECT: high operation reliability and reduced hemolysis.
4 cl, 2 dwg
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