One-way valve for infusion

Abstract

The invention relates to a one-way valve for infusion. The one-way valve comprises an upper housing, a lower housing, a latex sphere and a spring, wherein infusion channels are respectively formed in the upper housing and the lower housing; a supporting separating plate with a circular through hole is arranged on the upper end surface of the lower housing; the lower housing and the upper housing are integrally fixed in an adhering manner, and a tapered hollow cavity is formed between the lower housing and the upper housing; the latex sphere and the spring are arranged in the tapered hollow cavity; the bottom end of the spring is fixed on the supporting separating plate at the lower housing and while the top end of the spring is used for supporting the latex sphere at the upper part of the tapered hollow cavity; and the latex sphere blocks below the outlet of the infusion channel of the upper housing. The one-way valve for infusion is reasonable in structure and convenient and reliable in use, and has the function of stopping blood returning, so that the safety in infusion is ensured; and the one-way valve for infusion is an ideal one-way valve for infusion, which is suitable for being arranged on a medical infusion device, and can ensure the one-way flow in infusion and blood transfusion.

Description

technical field [0001] The invention relates to an auxiliary device of a medical infusion set, in particular to a one-way valve for infusion. Background technique [0002] Currently, disposable infusion sets are widely used for intravenous infusion. When the patient changes position, raises the arm, and walks, the infusion level may be higher than the liquid level of the drip funnel, and blood return will occur; when the pressure of the human body is higher than the infusion pressure, blood return will also occur; when the nursing staff is busy, If it is too late to close the infusion tube, blood return is also prone to occur; this not only causes fear to a certain extent for the patient, but also causes blood vessel embolism for a long time, which is very dangerous. Due to the small volume and low cost of the infusion set, the requirements for the one-way valve are relatively high, so far, the disposable infusion set still does not have the hemostatic function. Contents ...

AI Technical Summary

Problems solved by technology

When the patient changes position, raises the arm, and walks, the infusion level may be higher than the liquid level of the drip funnel, and blood return will occur; when the pressure of the human body is higher than the infusion pressure, blood return will also occur; when the nursing staff is busy, If it is too late to close the infusion tube, blood return is also prone to occur; this not only creates a certain degree of fear for the patient, but also causes blood vessel embolism for a long time, which is very dangerous

Due to the small size and low cost of the infusion set, the requirements for the one-way valve are relatively high, so far, the disposable infusion set still has no hemostatic function

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