Transfusion apparatus with automatic liquid stopping, blood returning prevention and alarming functions

Abstract

The invention discloses a transfusion apparatus with automatic liquid stopping, blood returning prevention and alarming functions. The transfusion apparatus comprises an upper drip funnel, a lower drip funnel, a drip funnel cover and a liquid discharge pipe, wherein the drip funnel cover is provided with a liquid inlet pipe and a two-way pipe; the upper drip funnel is connected with the lower drip funnel through a hollow drip funnel seat; the upper end of the hollow drip funnel seat is connected with an alarming device; the inner cavity of the hollow drip funnel seat is provided with a double-layer filtration membrane structure; the filtration membrane structure is composed of an inner filtration membrane layer and an outer filtration membrane layer, and the outer filtration membrane layer is composed of ultrafiltration membranes; the lower part of the hollow drip funnel seat constitutes a liquid discharge barrel; and the side wall of the liquid discharge barrel is provided with multiple liquid discharge holes. The transfusion apparatus is simple and reliable in structure; two layers of filtration membranes made of different materials are adopted, and the outer filtration membrane layer adopts the ultrafiltration membrane, so that the functions of automatic liquid stopping and blood returning prevention are realized; the outer filtration membrane has good hydrophilicity and bubble separation and secondary filtration effects; and the liquid transfusion situation can be known through observing the alarming device, and when an arrow on the alarming device perks upwardly, the liquid transfusion is completed.

Description

technical field [0001] The present invention relates to the category of medical devices, in particular to an infusion set with functions of automatic hemostasis, blood-return prevention and alarm. Background technique [0002] Infusion sets are used for intravenous infusion in the healthcare field. In order to prevent air from entering the patient's vein and the infusion set will automatically shut off after the drug infusion is completed, to ensure the safety of the entire process of the patient's infusion, and to achieve the efficacy of safe intravenous infusion, the automatic stop infusion set was invented. At present, the existing automatic hemostatic infusion device, such as the filter bag anti-return infusion device with the publication number of CN102451495A, is characterized in that: in the funnel there is a filter bag made of a liquid medicine filter membrane, the upper end of which is closed, and the lower end is connected by a two-way connection. The tube is conn...

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Problems solved by technology

[0003] However, this infusion set also has the following disadvantages: ①When replacing the second bottle of medicinal liquid, since the connection between the filter capsule and the two-way tube has a concave-convex shape, friction is likely to occur, and when the liquid passes through, it is blocked, thereby generating air bubbles; ②The Air bubbles cannot be discharged upward through the filter capsule, but can only be discharged through the down catheter; ③The residual liquid in the funnel enters the filter capsule through the drainage strip connected to the filter capsule to prevent blood return, and the effect of preventing blood return is poor; ④The filter membrane of the filter capsule cannot Realize precision filtration

Moreover, the color of the liquid medicine is usually close to that of the infusion set, so it is not convenient for people to observe whether the liquid medicine in the drip funnel of the infusion set has been transfused, and the medical staff cannot be notified in time to take out the infusion needle.

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