The present invention provides a multifunctional negative pressure drainage system capable of rapidly switching modes such as sustained negative pressure, intermittent negative pressure, cleaning, drug delivery, and cyclic drug delivery, which are performed against a patients wound. The multi-functional negative pressure drainage system includes a medical bandage, a waste liquid bottle, a vacuum pump, an a flow conduit, an a guide pipe, a B flow conduit, a peristaltic pump, a C flow conduit, a liquid supply bottle, an e-Flow conduit, an a control valve, a B control valve, and an F control valve .The medical bandage, the B flow conduit, the peristaltic pump, the C-flow conduit and the liquid supply bottle are sequentially connected. The medical bandage, the a flow conduit, the waste liquid bottle, the a guide and the vacuum pump are sequentially connected. The e flow tube is connected between the C flow conduit and the a flow conduit. The a control valve is provided in the a flow conduit. The connecting point between the e-Flow conduit and the a flow conduit is located between the a control valve and the medical bandage. The B control valve is provided in the C flow conduit.The junction point between the e-Flow conduit and the C flow tube is located between the B control valve and the peristaltic pump. The f control valve is provided in the e flow conduit. Diagram本発明は、患者の傷口に対して行う、持続的負圧、間欠的負圧、洗浄、薬供給、サイクル薬供給などのモードを迅速に切替可能な多機能負圧ドレナージシステムを提供する。この多機能負圧ドレナージシステムは、医療用包帯と、廃液瓶と、真空ポンプと、A導流管と、A導気管と、B導流管と、蠕動ポンプと、C導流管と、液体供給瓶と、E導流管と、A制御弁と、B制御弁と、F制御弁と、を備える。医療用包帯、B導流管、蠕動ポンプ、C導流管及び液体供給瓶は、順次に接続される。医療用包帯、A導流管、廃液瓶、A導気管及び真空ポンプは、順次に接続される。E導流管は、C導流管とA導流管との間に接続されている。A制御弁はA導流管に設けられている。E導流管とA導流管との連接点は、A制御弁と医療用包帯との間に位置する。B制御弁はC導流管に設けられている。E導流管とC導流管との連接点は、B制御弁と蠕動ポンプとの間に位置する。F制御弁はE導流管に設けられている。【選択図】図5
