Filter dropping funnel with automatic liquid stop and automatic exhaust

Abstract

A filter drip chamber with automatic liquid stopping and automatic exhausting functions belongs to medical apparatus and instruments, a liquid inlet tube is arranged at the upper end of the drip chamber, the lower end of the drip chamber is provided with a drip chamber cover provided with a drip chamber cover bleeder tube and an exhausting tube, a liquid stopping exhausting device is arranged on the drip chamber cover, a filter membrane inner cavity bleeder tube is arranged in the inner cavity of a filter membrane and is communicated with the drip chamber cover bleeder tube, and openings are formed in two side walls of the filter membrane inner cavity bleeder tube; an exhausting pipeline is arranged outside the inner cavity of the filter membrane; the tail end of the exhausting pipeline is communicated with the drip chamber cover exhausting tube; a hydrophilic filter membrane is fixed at the opening surface of the inner cavity of the filter membrane. The filter drip chamber with the automatic liquid stopping and automatic exhausting functions has the advantages of being capable of automatically stopping liquid and automatically exhausting, ensuring drip weight, reducing a filter in a pipeline, and ensuring flow speed and flow rate, and the filter membrane is always positioned in a state of being vertical to the horizontal plane due to the moving up of a filter.

Description

technical field [0001] The invention belongs to a medical device, in particular to a filter dripping funnel with automatic liquid stop and automatic exhaust. Background technique [0002] Intravenous infusion is a common clinical method for treating diseases. Most of the structures of existing infusion sets are as follows: the upper end of the drip funnel is provided with a drip funnel upper cover, the upper cover of the drip funnel is provided with a liquid inlet pipe and a liquid injection pipe connected with the drip funnel, and the lower end of the drip funnel is provided with a pipe connected to the drip funnel. A connected liquid outlet pipe, the liquid outlet pipe communicates with the venous needle through the catheter, and the catheter is equipped with a flow regulator. The infusion device of this structure has the following defects during use: 1. When the drip funnel upper cover is installed, because the material of the drip funnel upper cover and the drip funnel ...

AI Technical Summary

Problems solved by technology

The infusion device of this structure has the following defects during use: 1. When the drip funnel upper cover is installed, because the material of the drip funnel upper cover and the drip funnel is easily deformed, after installation, the drip funnel upper cover and the drip funnel will always be out of shape. There is some inclination. In this way, when the medicinal liquid enters the liquid inlet pipe and drips out from the dropper at the bottom of the liquid inlet pipe, the drop weight of the medicinal liquid cannot be guaranteed, and the medical staff cannot accurately calculate the drip volume and drip speed. For patients who control the speed and amount of dripping, their treatment cannot be guaranteed, and sometimes life-threatening; 2. When starting the infusion, the nurse inverts the dripping funnel or squeezes the dripping funnel vigorously to make the medicine liquid in the dripping funnel At the same time, the nurse personally supervises and controls the flow regulator to ensure that the liquid level in the drip funnel maintains a certain height and the liquid medicine fills all the pipelines

If the force is too large, the dripping funnel will be full of liquid medicine, and the drip volume and drip speed cannot be observed. At this time, the medical staff will release part of the medicinal liquid, which will cause waste and increase unnecessary workload for the medical staff; 3. 1. When the medicinal liquid in the dripping funnel is about to run out, the medicinal liquid in the dripping funnel will continue to flow until the venous pressure of the human body is balanced with the pressure of the medicinal liquid in the infusion set. The blood will flow back into the catheter of the infusion set due to the venous pressure. This phenomenon will cause panic for the patient, and it will also make the nurse take more time to re-exhaust, and will quickly form a thrombus, and even lead to medical accidents. ;4. After dripping the medicine liquid into the drip funnel, it is very easy to form a mixture of gas and liquid, and the gas-liquid mixture will enter the infusion pipeline below the drip funnel, forming bubbles during infusion. In order to ensure the life and health of patients, nurses The air bubbles in the infusion catheter must be completely discharged. Even so, air bubbles are often adsorbed on the wall of the infusion tube, which requires the nurse to use fingers to pinch to remove the air bubbles, which brings great inconvenience to the nurse; Air will enter the road, and patients and medical staff need to observe the remaining liquid medicine at any time, and close the flow regulator in time. Medical staff and patients have great psychological pressure

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