Disposable automatic liquid stop infusion set

Abstract

The invention relates to an automatic liquid-stop infusion apparatus. A safety mechanism of the automatic liquid-stop infusion apparatus comprises a buoyancy liquid-stop device in a drip chamber body. The buoyancy liquid-stop device is composed of a floating body, a double-fold reverse-T-shaped liquid sealing part and a connection part. The connection part and the double-fold reverse-T-shaped liquid sealing part are installed in a matched mode. A silica gel pad material with adsorbability is adopted for a sealing membrane of the double-fold reverse-T-shaped liquid sealing part, and the double-fold reverse-T-shaped liquid sealing part has an excellent sealing effect and is used for supplementing the liquid-stop function. The diameter of a liquid-stop column core of the double-fold reverse-T-shaped liquid sealing part is matched with the caliber of a pipe opening of a liquid outlet, the liquid-stop column core is used for plugging the liquid outlet and is combined with the sealing membrane to achieve the dual-liquid-stop effect. When infused liquid is about to run out, the buoyancy liquid-stop device then sinks to plug and close the liquid outlet of the infusion apparatus while the liquid level in the infusion apparatus falls, and therefore the liquid-stop effect is achieved. The automatic liquid-stop infusion apparatus is reasonable in design and principle, simple in structure, easy to machine and capable of being widely assembled on existing infusion apparatuses, a safety protection function is added to the infusion apparatuses, and the safe infusion effect is achieved.

Description

Technical field: [0001] The invention relates to a disposable medical appliance, in particular to a disposable automatic stop liquid transfusion device. Background technique: [0002] As we all know, my country has promoted the use of ordinary disposable infusion sets since the 1980s, and has a history of more than 30 years. It has played a positive role in preventing cross-infection in clinical infusions; There are certain shortcomings: when the infusion is completed or the infusion group is alternated, the air is easy to enter the infusion hose. If the treatment is not timely, the air input into the human body will have an impact on the patient's health; it also increases the care of the medical staff. The intensity of work can easily lead to doctor-patient disputes; therefore people expect to have a safer and more effective product, so that the majority of medical staff and patients can use it safely and safely; in order to solve the above-mentioned technical problems, some...

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Problems solved by technology

[0002] As we all know, China has promoted the use of ordinary disposable infusion sets since the 1980s, and has a history of more than 30 years. Infection has played a positive role; however, common disposable infusion sets still have certain deficiencies: when the infusion is completed or the infusion groups are alternated, air is easy to enter the infusion hose. The patient's health is affected; at the same time, it also increases the intensity of medical staff's nursing work, which is likely to cause doctor-patient disputes; therefore, people expect to have a safer and more effective product, so that the majority of medical staff and patients can use it safely and safely ; In order to solve the above-mentioned technical problems, the prior art has proposed some technical solutions such as:

[0006] The above-mentioned patents generally have the following deficiencies in practical applications: First, the seal between the floating body and the liquid outlet at the bottom of the dropping funnel or the liquid outlet at the bottom of the housing is sealed by contacting the sealing diaphragm on the plane, and the sealing film When there is a certain space inside the tablet and the floating body, air bubbles are likely to be generated when the infusion alternates; secondly, when the liquid is stopped by the plugging method, the accuracy of the seal between the floating body and the liquid outlet at the bottom of the dropping funnel is high, and the existing production The process is difficult to meet the requirements of complete sealing, resulting in low sealing reliability and low safety; third, when the liquid is stopped by the membrane sealing method, the sealing diaphragm must be designed to be thinner in order to effectively wrap the sealing outlet, making the practical Because the protruding end of the outlet part of the liquid medicine is easy to pierce the film, resulting in failure to seal

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