| 摘要 |
A needle syringe, which uses an air compressor to generate suction force to withdraw the air in the syringe and form vacuum suction to withdraw drugs or blood into the syringe to attain the objective of withdrawal. Besides, the compressed air by the air compressor can be charged into the syringe to generate push force to inject drugs or blood in the syringe into patient body or a blood storage test tube. Through pressing the blocking section of the needle socket, the elastic fixture in the blocking section is loosen off to allow the needle socket along with the needles retracting into the syringe body.
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