| 摘要 |
THERE IS DISCLOSED A SAFETY IV CATHETER COMPRISING: A NEEDLE (16) HAVING A NEEDLE SHAFT AND A NEEDLE TIP (18); SAID NEEDLE SHAFT COMPRISING A BULGE (61, 138); A HOLLOW TUBULAR CATHETER (24) HAVING A PROXIMAL END; SAID HOLLOW TUBULAR CATHETER (24) IS SECURED TO THE DISTAL END OF A CATHETER HUB (26); SAID CATHETER HUB (26) HAVING A HUB SECTION (30), WHEREIN A CHAMBER (36) IS FORMED IN SAID HUB SECTION (30), AND HAVING AN INNER WALL; A PROTECTIVE NEEDLE GUARD (40, 96, 120) LOCATED WITHIN SAID CHAMBER (36)BEING FORMED IN SAID HUB SECTION (30) OF SAID CATHETER HUB SECTION (30) OF SAID CATHETER HUB (26) AND HAVING A DISTAL ARM (42, 112) OR DISTAL END WALLS (130); SAID NEEDLE (16) BEING RECEIVED WITHIN SAID HOLLOW TUBULAR CATHETER (24) WHEN IN A READY POSITION, WHEREIN SAID NEEDLE EXTENDS THROUGH SAID CHAMBER (36), A PASSAGEWAY (34) AND DISTALLY BEYOND SAID CATHETER HUBSAID CATHETER HUB (26) AND SAID HOLLOW TUBULAR CATHETER (24) SO THAT SAID NEEDLE TIP (18) EXTENDS BEYOND THE TAPERED DISTAL END OF SAID HOLLOW TUBULAR CATHETER (24) AND SAID NEEDLE GUARD (40, 96, 120) LOCATED WITHIN SAID HUB CHAMBER (36) IS ADAPTED TO AUTOMATICALLY SNAP OR PIVOT INTO A RETRACTED POSITION FOR BLOCKING ACCESS TO SAID DISTAL NEEDLE TIP (18) AND PREVENTING FURTHER MOVEMENT OF SAID NEEDLE TIP (18) WHEN SAID NEEDLE (16) IS IN ITS RETRACTED POSITION; A GROOVE (48, 136) OR BUMP (62) BEING FORMED IN SAID INNER WALL OF SAID CATHETER HUB (26) FOR ENGAGING A LOWER END (46) OR CURVED SECTION (110) OR CURVED PROTRUSION (128) OF SAID NEEDLE GUARD (40, 96, 120) FOR RETAINING SAID NEEDLE GUARD (40, 96, 120) IN SAID CATHETER HUB (26) IN THE READYPOSITION; SAID NEEDLE SHAFT OF NEEDLE (16) BEING ADAPTED TO ENGAGE SAID DISTAL ARM (42, 112) OR DISTAL END WALLS (130) OF SAID NEEDLE GUARD (40, 96, 120) WHEN SAID NEEDLE (16) IS IN ITS SAID READY POSITION; AND WHEN SAID NEEDLE (16) IS RETRACTED CAUSING SAID NEEDLE GUARD (40, 96, 120) TO PIVOT OR SNAP TO THE RETRACTED POSITION, SAID DISTAL ARM (42, 112) OR DISTAL END |
