Anti-reflux joint

Abstract

The invention discloses an anti-reflux joint. The anti-reflux joint comprises an anti-reflux main body; a first interface is arranged at the center of the top of the anti-reflux main body; a second interface is arranged at the center of the bottom of the anti-reflux main body; an annular buoy valve baffle is arranged on an inner wall of the anti-reflux main body; a buoy valve is arranged, in movable connection, inside the anti-reflux main body; and the buoy valve is composed of a buoy valve upper baffle, a buoy valve lower baffle, a plurality of hollowed water flow lattices and a plurality ofanti-reflux bulge columns. When the anti-reflux joint is in use, the buoy valve moves downwards when liquid flows from the first interface to the second interface, so that, the liquid can flow into the hollowed cylindrical buoy valve through the hollowed water flow lattices between the buoy valve and the inner wall of the anti-reflux main body; and then, the liquid flows out through the hollowed water flow lattices, and flows to the second interface so as to achieve smooth infusion and drainage. When liquid flows from the second interface to the first interface, the buoy valve is pushed by theliquid so as to allow tight contact of the buoy valve lower baffle with the annular buoy valve baffle; and thus, flow of the liquid from the second interface to the first interface is prevented, thereby achieving the anti-reflux effect.

Description

technical field

[0001] The invention relates to the technical field of medical joints, in particular to an anti-reflux joint. Background technique

[0002] At present, there are two main problems caused by fluid reflux clinically. One is that blood reflux in the infusion line is prone to occur due to intravenous infusion;

[0003] Intravenous infusion is to use the principle of atmospheric pressure and hydrostatic pressure to inject liquid into the human body. However, due to the shortage of clinical nurses, it is impossible to take full care of patients during the infusion process. Due to various reasons, the blood in the infusion line returns. If the liquid level is too low, the drop is less than the blood pressure of the human body, and blood backflow occurs; some patients are not allowed to measure blood pressure at the infusion side, and the cuff pressure will cause blood backflow during pressure measurement; blood backflow. And the backflow of blood easily increases...

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