Precise filter light-proof infusion device

Abstract

The invention provides a precise filter light-proof infusion device which comprises a puncture device, a dropper, a drip chamber, a pipeline and a flow regulator, wherein a drip chamber upper cover is arranged at the upper end of the drip chamber, and is provided with a liquid inlet pipe; the liquid inlet pipe is connected with the dropper; the dropper is connected with the puncture device; an air intake component is arranged in the drip chamber upper cover; a stop precise liquid medicine filter membrane is arranged at the lower part of the drip chamber; a drip chamber lower cover is arranged at the lower end of the drip chamber; the liquid outlet of the drip chamber lower cover is connected with the pipeline; the pipeline is connected with an external conical connector; the flow regulator is arranged on the pipeline; the dropper, the drip chamber and the pipeline are prepared by using polyvinyl chloride as a raw material and tri-octyl tri-meta-benzoate TOTM as a plasticizer and adding an ultraviolet absorber; and an ITO film layer is coated to inner surfaces of the dropper, the drip chamber and the pipeline. The precise filter light-proof infusion device is light-proof, has certain transparency, and can be used for preventing medicines from reacting with light-proof materials.

Description

technical field [0001] The invention relates to an infusion set, in particular to a disposable infusion set without o-phthalmic plasticizers, which can automatically exhaust and automatically stop the liquid while precisely filtering the liquid medicine and has no harm to the human body, belonging to the field of medical devices. Background technique [0002] At present, a disposable infusion set is a necessary medical device for clinical infusion, which generally includes a puncture device, an infusion tube, a drip tube, a flow rate regulator, a Luer connector, and an infusion needle from top to bottom. Although the structure of this infusion set is simple, if the infusion needle is not pulled out in time or the bottle is changed in time when the infusion is completed, air will enter the infusion line to form air bubbles, and the air bubbles will cause venous return when the air bubbles enter the patient's body, and even lead to severe medical malpractice. This requires me...

AI Technical Summary

Problems solved by technology

However, because the infusion tube is long and soft, it is not easy to cover it tightly and seamlessly with light-proof paper or black cloth, and the light-proof performance is not very good. Not only is the wrapping process troublesome to operate, but it is also inconvenient to use. Or the flow of the drug cannot be observed when the black cloth is wrapped, and the flow of the drug cannot be adjusted

[0006] For this reason, there is a patented technology that directly adds light-absorbing materials to the infusion tube, but in this case, the light-absorbing material may react with the liquid medicine, affecting the safety of the infusion, and after adding light-absorbing materials, there is generally a problem of poor light transmission and poor visibility.

In order to prevent the light-absorbing material from reacting with the liquid medicine, there are literatures that use a double-layer infusion tube to overcome this difficulty. The inner layer of the infusion tube is still an ordinary infusion tube, and the outer layer is wrapped with an outer layer of light-absorbing material or ultraviolet light absorber. Although this solves the problem of the reaction between the light-absorbing material and the liquid medicine, but because of the different refraction angles, the permeability of the infusion tube is worse, and it is even impossible to distinguish whether there are air bubbles in the infusion tube. As we all know, if air is injected into the blood vessels of the human body, affect human health

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