| 摘要 |
This invention includes an external protective sheath for normally enclosing a medical needle to provide a safety protective enclosure normally surrounding the needle, but being adapted to be temporarily removed from needle enclosing protective position to expose the needle for use in penetrating a patient's blood vessel for injection of medication from a syringe or for introduction of intravenous tubing and said sheath being moveable back into protective position around the needle after use.
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