Negative pressure relief valve and be equipped with negative pressure sputum aspirator of this relief valve

The utility model relates to a negative pressure relief valve and be equipped with negative pressure sputum aspirator of this relief valve, the negative pressure relief valve includes: the main valve body, main valve body one end has been seted up and has been connected external atmospheric first ai...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	PENG TIECHENG, DUAN ZHIHUANG
Format:	Patent
Sprache:	eng
Schlagworte:	DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE
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