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Safety Syringe and Needle and Needle Seat Retracting Device of Safety Syringe
专利权人:
Pei-Hsin Hsu
发明人:
Pei-Hsin Hsu,Pei-Yang Hsu,Wei-Ni Hsu
申请号:
US15878697
公开号:
US20180147367A1
申请日:
2018.01.24
申请国别(地区):
US
年份:
2018
代理人:
摘要:
A safety syringe has a barrel, a pushing element, a retracting element, and a needle group. The barrel is hollow and has a needle-group mounting end, an operating grip end, and a barrel lumen. The pushing element is retractably mounted in the barrel lumen and has a pushrod chamber. The retracting element is airtightly and slidably mounted in the pushrod chamber. The needle group is connected to the needle-group mounting end of the barrel. The present invention can pull the retracting element to move relative to the pushing element to form a low pressure condition in the pushrod chamber as a vacuum status. After the injection, a vacuum attraction force in the pushrod chamber can retract the used needle group into the pushrod chamber for safe use of the safety syringe.
来源网站:
中国工程科技知识中心
来源网址:
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