| 摘要 |
<p>An automatic retractable safety penetrating instrument (30) according to the present invention includes an elongate penetrating member (32), a portal sleeve (34) concentrically disposed around the penetrating member, a hub (36) mounting penetrating member (32) and a valve housing (38) mounting portal sleeve (34). The hub (36) can be latched to housing (38) with the use of any suitable releasable mechanism, such as detents (40) operated by buttons (42), allowing the hub to be removed from the housing withdrawing the penetrating member from the portal sleeve. Accordingly, the automatic retractable safety penetrating instrument (30) can be considered to be formed of a portal unit and a penetrating unit, the portal unit including portal sleeve (34) and housing (38) and the pentrating unit including penetrating member (32) and hub (36).</p> |
