| 摘要 |
The present invention is a passively shieldable blood collection set (10). The blood collection set (10) includes a needle cannula (20), a hub (22) mounted to the needle cannula (20) and a tip guard (26) slidably movable along the needle cannula (20). The tip guard (26) can be slid into a distal position where the tip (32) of the needle cannula (20) is safely shielded. A collapsible guard drive (28) is mounted to the hub (22) and includes a pair of collapsible leaves (86) extending from the hub (22) to the tip guard (26). The leaves (86) have a length that enable the tip guard (26) to move into shielding engagement around the tip (32) of the needle cannula (20), while preventing complete removal of the tip guard (26) from the needle cannula (20). The leaves (86) are resiliently deformable and can be collapsed onto themselves and onto the hub (22). The leaves (86) can be retained in their collapsed condition by a packaging cover (18) and subsequently by the grip of a medical practitioner. A mere release of the grip on the collapsed leaves (86) enables the leaves (86) to resiliently return toward an undeflected condition and propels the tip guard (26) distally into shielding engagement around the tip (32) of the needle cannula (20). <IMAGE> |
