| 摘要 |
A protective needle guard assembly features a hub that is removably secured to a reusable syringes, a first and a second needle extending outwardly from the hub in opposite directions, and a moveable sheath that moves about an outer surface of the syringe. The needle guard includes an engagement device that engages the moveable sheath to secure the moveable sheath in an extended position wherein the moveable sheath extends beyond the distal end of the first needle. The moveable sheath features a retracted position wherein the first needle is substantially exposed. A cavity formed in the hub substantially covers and protects the second needle.
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