Negative pressure drainage device

The utility model discloses a negative pressure drainage apparatus, which relates to the drainage apparatus field, and comprises a housing, a piston cylinder and a negative pressure cavity, the negative pressure cavity is communicated with the piston cylinder, and the negative pressure cavity is int...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	CAI MEIYUN
Format:	Patent
Sprache:	chi ; 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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