摘要 |
<p>A IV manifold (18) includes a plurality of injection/aspiration ports (27, 30, 32), and has an elongate configuration with a width greater than the diameter of the ports. A flow channel (49) is formed between mating members (22, 24) of a housing (23) and provided with a U-shaped configuration (90). Projections (50, 52, 54) along the flow channel direct fluid flow into valve cavities (63, 65, 67) associated with the ports to clear dead spots around the valve elements (30, 32, 34). A check valve (26) included in the manifold tends to create direct high-pressure against the valve elements which respond by forming a surface seal thereby avoiding deformation. An aspiration port can be formed with a second seal disposed on the side of the valve element opposite the first seal. Opening this second seal by negative pressure in the lumen of the port provides for the aspiration of fluids in the flow channel. Two-way aspiration can be provided by a valve having a cage with or without compressible characteristics to accommodate low tolerance fittings.</p> |