Automatic controlling arrangement of transfusion system

Abstract

The invention discloses an automatic control device of drop transfusion system, which consists of lye storage and float in the lye storage, wherein the liquid-in needle (1) with liquid-in opening (2) and vertical convex area (3) toward intracavity with liquid-out opening (4); the float contains cylindrical floater (5) and soft elastomer sealer (8). There is longitudinal gap between sealer (8) and vertical convex area (3) that matches each other. The invention provides a precise and reliable sealed transfusion system with automatic closing system effectively, which can be applied in the medical treatment domain widely.

Description

technical field [0001] The invention relates to an automatic control device for drip transfusion set. Background technique [0002] At present, intravenous infusion is a commonly used treatment method clinically. The traditional drip infusion device is to install a control valve on the infusion tube to control the switch and flow of the infusion, so that the liquid medicine can be injected into the human body at a stable flow rate, and the control valve can be closed when necessary, for example, when the infusion is about to end or When changing the dressing solution, closing the control valve can prevent air from entering the blood vessel and blood backflow into the infusion tube. The above-mentioned operation of the control valve is done manually. Intravenous infusion often takes a long time, and it is difficult to determine the exact time to complete the infusion, so constant care is required. However, patients and nurses often neglect to check the infusion process, so t...

AI Technical Summary

Problems solved by technology

Chinese Patent Publication No. CN1526455, the disclosure date is September 8, 2004, and the name of the invention is called "infusion syringe control device" and discloses a kind of such control device, and this control device mainly comprises liquid medicine reservoir and float, and its deficiency The disadvantages are: on the one hand, if the gap between the blades and ridges of the float and the liquid medicine reservoir is not small enough, it will easily cause the float to tilt, and the stable lifting of the float cannot be guaranteed, and it cannot be effectively sealed when the control device is closed; on the other hand, The gap between the blades and ridges of the float and the liquid medicine reservoir is small enough to ensure the stable rise and fall of the float, but when infusion, according to the traditional procedure, the peripheral wall of the liquid medicine reservoir must be pinched repeatedly with fingers Make it deform to discharge part of the air in the cavity to introduce the liquid medicine, which will touch the blades and ridges of the float and make the float stuck and cannot be suspended. When the infusion should be automatically closed, it cannot be automatically closed and sealed; and the float If the gap between the blades and ridges and the liquid medicine reservoir is too small, the deformation of the peripheral wall of the liquid medicine reservoir is likely to be insufficient when pinched by fingers, so that the liquid medicine cannot be smoothly introduced into the cavity of the liquid medicine reservoir; in addition, according to The structure of the float shows that it is a hard material. Even if a thin layer of soft sealing material such as silica gel is added to the sealing surface of the float, the seal between the float and the cylindrical protrusion is actually a circular linear seal. Still not good enough for self-adaptive sealing with slightly deflected float

[0004] Therefore, the existing products have the following deficiencies: they cannot be automatically closed and effectively sealed accurately and reliably

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