Air embolism prevention murphy's dropper

Abstract

The invention relates to an air embolism prevention murphy's dropper. According to the air embolism prevention murphy's dropper, when a floating ball floats downwards to the bottom of the murphy's dropper, the outer surface of the floating ball and the inner surfaces of two cones are in simultaneous tangency, an iron ring and a liquid outlet conduit are in close fit, and a magnetic ball arranged in the floating ball and a chromium-plated iron ring are in magnetic attraction. Magnetic force provides positive pressure to the floating ball, plastic deformation will occur between the floating ball and a contact sealing surface of the two cones, air leakage resistance is increased, and then blocking and isolating are achieved. In this way, under the triple effects of air pressure, gravity and magnetic force, outer surface of the floating ball and the inner surfaces of two cones are in tangency to achieve a secondary sealing effect, and the critical defect of air embolism is avoided. The murphy's dropper is high in production operability and technical content and low in cost and has extremely high market application value.

Description

technical field [0001] The invention relates to a medical device in the medical field, in particular to an anti-air embolism Murphy dropper. Background technique [0002] At present, around the anti-air embolism technology of disposable infusion sets, the gravity and single sealing design with simple structure, or the mechanical valve with complex structure, photoelectric integration and other sealing designs are generally adopted. The former has poor sealing performance, low safety and no practical value. The seal performance is guaranteed and the safety is high, but the production process is complicated and the cost is high, so it is difficult to be widely promoted. In this way, the style of the Murphy's dropper is formed to remain unchanged for a long time. But its defect also exists all the time, on the one hand when transfusion changes infusion bottle (bag), can cause the phenomenon that after medicinal liquid is dripped at the dripping funnel place of Murphy's dropper...

AI Technical Summary

Problems solved by technology

But its defect also exists all the time, on the one hand when transfusion changes infusion bottle (bag), can cause the phenomenon that after medicinal liquid is dripped at the dripping funnel place of Murphy's dropper, air enters the phenomenon of output hose at the lower end of Murphy's dropper , the medical staff will spend a certain amount of time to empty the air in the output hose little by little, which will waste part of the liquid medi

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