| 摘要 |
<p>An IV manifold (18) includes a plurality of injection/aspiration ports (27, 30, 32) including a needleless access port (NAC). A check valve (76) included in the manifold is generally located at an upstream end of the manifold. However, the check valve may alternatively be located between injection ports. An aspiration port can be formed with a second seal disposed on the side of the valve element (70) opposite a first seal. Two-way aspiration can be provided by a valve having a cage (121) with or without compressible characteristics to accommodate low tolerance fittings. Alternatively, two way aspiration can be provided by the NAC (132) having a single elongate valve element (143) including a plug (170) at one end. The elongate valve element has properties for resiliently and sealingly biasing the plug into an aperture of the NAC. In use the plug is mechanically displaced by insertion of a male Luer for injection or aspiration.</p> |
