Anti-backflow anti-blocking negative pressure drainage device
A negative pressure drainage and anti-clogging technology, applied in suction devices and other directions, can solve the problems of aggravating abdominal infection, insufficient negative pressure attraction, laborious and other problems, and achieve the effects of improving drainage efficiency, preventing retrograde infection and improving labor intensity.
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[0017] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0018] The accompanying drawing is an embodiment disclosed by the invention. The anti-backflow and anti-blocking negative pressure drainage device of the present invention consists of a left valve sleeve 1, a liquid inlet valve core 2, a left spring 3, a left valve cover 4, a right valve sleeve 5, a liquid discharge valve core 7, a right spring 8, and a right valve cover 9. Syringe tube 6, syringe 10, piston 11, liquid outlet tube 12, etc. The main points of its structure are: the left valve sleeve 1 is provided with a liquid inlet valve core 2 that only allows body fluid to flow to the right; There is a piston 11 that can move up and down, and the syringe connecting pipe 6 and the liquid outlet connecting pipe 12 are glued with the right valve sleeve 5 respectively.
[0019] The left valve cover 4 is provided with a central hole b, and the...
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