Slow flow device for disposable transfusion set

Abstract

The invention discloses a slow flow device for a disposable transfusion set. The transfusion set comprises an upper dropping funnel and a lower dropping funnel; a liquid blocking device consists of inner and outer covers of a floating ball and a liquid blocking membrane; the slow flow device comprises a liquid level blocking column arranged at the bottom of the lower dropping funnel; the top of the liquid level blocking column is an inclined surface; the inclined surface is provided with at least one groove; the groove comprises an upper port and a lower port; the cross section of the upper port is larger than that of the lower port; and when the liquid blocking membrane is jointed with the liquid level blocking column, a medicinal liquid in the lower dropping funnel flows through the upper port and the lower port in sequence, and flows into a transfusion conduit. According to the slow-flow device for the disposable transfusion set, the medicinal liquid in the lower dropping funnel can enter from the upper port of the groove and slowly flows into the transfusion conduit from the lower port of the groove through the groove formed on the liquid level blocking column of the lower dropping funnel when the liquid blocking membrane of the liquid blocking device is jointed with the liquid level blocking column; and after complete dripping, air is supplemented, and a liquid in the conduit slowly flows into a human body continually, so that the dripping time of the medicinal liquid is prolonged, and blood reflowing is prevented.

Description

technical field [0001] The invention relates to a medical device, in particular to a slow flow device of a disposable infusion set. Background technique [0002] At present, clinically, in the drip transfusion process for medical treatment of patients, drip infusion sets with flow controllers and liquid stop control devices are widely used. [0003] The invention with the application number of 200910040511.5 discloses a liquid stop control device for an infusion set. It at least includes a liquid-stopping part that can float in the dropping funnel; an anti-blocking structure is set between the liquid-stopping part and the liquid inlet part. The present invention adopts the above-mentioned structure, and by setting an anti-clogging structure between the liquid-stopping part and the liquid-inlet part, it effectively avoids the situation that the liquid-stopping part blocks the liquid-inlet part, resulting in the situation that the infusion cannot go down, and reduces the oper...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a slow flow device for a disposable infusion set in order to overcome the defect that the liquid medicine is easily left in the infusion set in the prior art and cause waste

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