| 摘要 |
The invention provides an intravascular placement apparatus adapted for operative association with an introducer needle. The apparatus provides a cannula provided with a connector hub at its remote end, a self-sealing septum disposed across the internal lumen of the cannula whereby the cannula can be positioned by co-operation with the introducer needle, and a blunt hollow adapter adapted to penetrate a channel in the septum. The invention lies in providing a selfsealing septum of a resilient material which ages rapidly after forming to a point where resilience is not significantly further effected by time. Preferably the channel is formed in situ in the septum when the septum has aged for a predetermined period.
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