| 摘要 |
The present invention provides a safety indwelling needle in which an outer cannula (11) has a housing (12) attached to a proximal end and a needle tip protector (30) within said housing. On withdrawal of an inner needle (20), a tip of said needle engages with said protector causing it to be withdrawn and simultaneously causing the needle tip to become trapped in the protector by the inward movement of respective blocking members (32, 33). |
