| 摘要 |
<p>A cannula (14) includes a tubular member (36) having a bore (42) which is divided into two lumens (32, 34) by a member (38) extending in the bore (42). The divider member (38) is crimped into sealing contact against the bore sidewall (40) at the distal ends (44, 46) of the bore (42). The crimped end portions (68, 78) serve to close a different lumen at each distal end. Openings (74, 84) are formed in the sidewall (40) of the bore (42) in the vicinity of each distal end (44, 46) to establish communication with the associated sealed lumen. Mixing or recirculation between the fluid paths through the lumens (32, 34) is thereby minimized at each distal end (44, 46) as much as possible. </p> |
