Low adsorption multi-layer co-extrusion light proofing infusion apparatus

Abstract

The invention relates to a low adsorption multi-layer co-extrusion light-proofing infusion apparatus, comprising a puncture, an air filter, a dropping funnel, a flow regulator, and a liquid filter with infusion catheter linking the above mentioned parts in between. The invention is characterized in that the infusion catheter and the dropping funnel adopt a multi-layer structure, and the outer layer is made of medical PVC with additive light-proof powder, the inner layer is nonpolar medical TPE thermoplastic elastomer). The invention eliminates the possibility for the light-proof system to precipitate from the infusion apparatus, and meets the need of clinical light-proofing infusion safely and effectively. The inner layer does not absorb the medical liquid at all, so that wastes of medicine are avoided. The product of the invention is simple in structure and easy to use as ordinary infusion apparatus.

Description

Technical field [0001] The invention relates to a light-proof infusion set, in particular to a pipeline and a drip funnel with a multi-layer structure, which belongs to the technical field of medical devices. technical background [0002] In clinical practice, some medicines need to be transfused under light-proof conditions, such as sodium nitroprusside, nitroglycerin, vitamin B2, etc. Common infusion sets cannot meet this infusion requirement, therefore, infusion sets with light-proof function are needed. The earliest light-proof infusion set was wrapped with opaque materials. Although it can protect the infusion set from light, it is also cumbersome to operate, which is not conducive to observing the dripping speed and bubbles. Appeared again afterwards with light-proof polyvinyl chloride raw material, a kind of by the black or brown raw material of light-proof, the light-proof infusion set that the structure of making is similar to common infusion set. This kind of ligh...

AI Technical Summary

Problems solved by technology

This kind of light-shielding polyvinyl chloride raw material is blended by adding light-shielding powder on the basis of ordinary polyvinyl chloride raw materials. The light-shielding powder used includes two small molecular substances, toner and ultraviolet absorber, which are easy to dissolve during the infusion process. Precipitation due to immersion in the medicinal liquid, resulting in discoloration of the medicinal liquid, endangering the health of the patient, and at the same time bringing panic to the patient's psychology

In addition, polyvinyl chloride is a polar material, which has a strong adsorption effect on polar liquid medicines, such as diazepam, nitroglycerin, cyclosporin A, isosorbide dinitrate, and insulin, which seriously It can reach 70% adsorption, which will greatly reduce the dosage and damage the interests of patients

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