Disposable infusion apparatus

Abstract

The invention discloses a disposable infusion apparatus. A regulation assembly comprises a pressure regulating cavity corresponding to a liquid injecting opening and a pressure stabilizing cavity corresponding to a liquid draining opening, the pressure regulating cavity communicates with the pressure stabilizing cavity through a regulation opening, and the regulation assembly also comprises a regulation plug of which the regulation end is inserted into the pressure regulating cavity and the pressure stabilizing end is inserted into the pressure stabilizing cavity. The area of the cross sectionof the pressure stabilizing end is greater than that of the regulating end, when flow at the liquid injection opening is increased, intensity of pressure of the regulation end is increased along withincrement of the pressure of the pressure regulating cavity, the pressure of the pressure stabilizing cavity is increased until the pressure of the pressure stabilizing cavity and the pressure of thepressure regulating cavity are consistent, if the pressure of the pressure stabilizing cavity is increased, the intensity of pressure of the pressure stabilizing end is not obviously changed, the flow of the liquid draining opening is unchanged, and the liquid draining speed of the liquid draining opening is stable. When the flow at the liquid injection opening is reduced, the intensity of pressure of the regulation end is reduced along with reduction of the pressure of the pressure adjusting cavity, the pressure of the pressure stabilizing cavity is reduced until, the pressure of the pressure stabilizing cavity and the pressure of the pressure adjusting cavity are consistent, and if the pressure of the pressure stabilizing cavity is reduced, the intensity of pressure of the pressure stabilizing end is not obviously changed, so that the flow of the liquid draining opening is maintained unchanged, and the liquid draining speed of the liquid draining opening is stable. Stable liquid drainage can be realized.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a disposable infusion set. Background technique [0002] In medical institutions, doctors usually use disposable infusion sets to infuse medicinal liquid into patients' veins to treat various diseases. The medicine bag is usually suspended on the infusion rod or the hook above the patient, so that the medicinal liquid is injected into the vein by the disposable infusion set by gravity. The suspension height of the medicine bag directly affects the drainage speed of the disposable infusion set, and the inconsistency of the suspension height leads to unstable drainage speed of the disposable infusion set. For special needs such as painful childbirth that require a stable discharge rate, the existing disposable infusion set is difficult to meet these special needs, and the unstable discharge rate of the disposable infusion set may also affect the therapeutic effect of the...

AI Technical Summary

Problems solved by technology

The suspension height of the medicine bag directly affects the drainage speed of the disposable infusion set, and the inconsistency of the suspension height leads to unstable drainage speed of the disposable infusion set. For special needs such as painful childbirth that require a stable discharge rate, the existing disposable infusion set is difficult to meet these special needs, and the unstable discharge rate of the disposable infusion set may also affect the therapeutic effect of the liquid medicine, and there is a potential Medical safety hazard

[0003] Based on the above problems, the existing disposable infusion set is equipped with an infusion pump and a drug storag

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