Backflow prevention device for infusion apparatus and drainage bag
A technology for preventing backflow and infusion set, which is applied in the direction of instruments, flow control, suction devices, etc., to achieve the effects of wide application, low cost, and simple and ingenious design.
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[0032] Please see attached Figure 1-2 , figure 1 It is a schematic front view of the working principle of an anti-backflow device for infusion sets and drainage bags of the present invention, figure 2 It is a top view schematic diagram of the working principle of an anti-backflow device for infusion sets and drainage bags of the present invention. An anti-backflow device for infusion sets and drainage bags, the anti-backflow device 1 includes a tube wall 11 and three curved fan-shaped valves 12; the three curved fan-shaped valves 12 constitute the anti-backflow device 1 open or closed structure; the middle part of the three curved fan-shaped valves 12 naturally surrounds a fluid hole 13; figure 1 Schematic diagram of middle A and figure 2 The schematic diagram in A is the situation during normal infusion. During normal infusion, the solution can flow through the liquid hole 13 to the direction of the needle or drainage bag, and the arrow is the flow direction of the solu...
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