A kind of enclosed phlegm-suction device of what is closed in this creation system,System include: one first pipe assembly,One second pipe assembly,One pumping phlegm pipe sleeve,One pumping phlegm pipe and one exit preventing member； Wherein,The first pipe combined system at least have patient's connecting tube,One oxygen supply manifold,With an extension； And the pumping phlegm piping has one to take out phlegm end and a negative pressure end； The second pipe assembly be then at least have one take out phlegm pipe connected pipe,One vacuum extractor connecting tube,With a negative pressure control valve； And this exits preventing member system and sets the what pumping phlegm pipe sleeve,And it connects between what the first pipe assembly and the second pipe assembly. So, when what uses the enclosed phlegm-suction device of this creation, when medical staff pulls the pumping phlegm pipe, this, which exits preventing member, can in time hold the pumping phlegm end of the pumping phlegm pipe, to avoid medical staff excessive pulling and cause the pumping phlegm end to exit the first pipe assembly and fall in the what pumping phlegm pipe sleeve.本創作係關於一種密閉式吸痰裝置，係包括：一第一管組合體、一第二管組合體、一抽痰管套、一抽痰管以及一退出防止件；其中，該第一管組合體係至少具有一患者連接管、一供氧歧管、與一延伸管；而該抽痰管係具有一抽痰端與一負壓端；該第二管組合體則係至少具有一抽痰管連接管、一負壓吸引器連接管、與一負壓控制閥；且該退出防止件係置於該抽痰管套，並連接於該第一管組合體與該第二管組合體之間。如此，於使用本創作之密閉式吸痰裝置時，當醫護人員拉動該抽痰管時，該退出防止件可適時地拉住該抽痰管之該抽痰端，以避免醫護人員之過度拉動而導致該抽痰端退出該第一管組合體而掉落於該抽痰管套內。
