| 摘要 |
<p>The invention discloses a needle (10, 20, 20', 30, 40, 50, 60) or cannula (100, 100', 110, 110', 120, 120', 200, 210, 220) comprising a hollow shaft with an interface hub (18, 28, 28', 38, 48, 58, 68, 114, 114', 124, 124', 214, 224), the shaft having a fine gauge portion (12, 22, 22', 32, 42, 52, 62, 112, 112', 212) at its distal end and a reinforced portion (16, 26, 26', 36, 46, 56, 66, 122, 122', 222) at or near its proximal end. A cannula sleeve (122, 122', 222) is provided to reinforce a standard cannula (C). A larbe bore cannula (120) and an insertion means is disclosed, which insertion means causes a small puncture wound and reduces risk of accidental injury. Improved needles (10, 20, 20', 30, 40, 50, 60, 310, 320, 330, 340, 350, 360) and cannulae (200, 210, 200, 220) for nerve stimulation and needles (310, 320, 330, 340, 350, 360) to minimize the risk of puncture damage are also disclosed.</p> |
