Infusion set

Abstract

The invention relates to an infusion set and belongs to the technical field of medical apparatus and instruments. The infusion set comprises a puncture outfit, an upper conduit of a drop funnel, a drip tube, the drop funnel, a lower conduit of the drop funnel, a regulator and an intravenous needle which are sequentially connected. The liquid outlet end of the intravenous needle is sleeved with a sealing sleeve; an air exhaust pipe is arranged between the drop funnel and the lower conduit of the drop funnel; at least one air exhaust hole is formed at one end, which is positioned in an inner cavity of the drop funnel, of the air exhaust pipe; a liquid medicine passing membrane made from a material which is permeated by water is arranged above the air exhaust pipe; a group of pores are formed on the liquid medicine passing membrane; the liquid medicine passing membrane allows liquid medicine and gas to pass through but blocks insoluble granules with the diameter of greater than the diameter of the pores in the liquid medicine; the sealing sleeve seals the liquid outlet end of the intravenous needle; and an air filter is arranged on the sealing sleeve. The infusion set is simple in structure and has self-exhausting and automatic liquid-stopping functions.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to an infusion set with self-exhaust and automatic liquid stop. Background technique [0002] The infusion set is a commonly used medical device. After the infusion set is inserted into the medicine bottle, before the human body is punctured, the dripping funnel of the infusion set must be lowered down the catheter until the intravenous needle is filled with liquid medicine and there are no air bubbles left, so as to prevent the air bubbles from being injected into the human body and cause Acute bubble embolic death or chronic vascular embolism, a process called deflation. At present, the infusion sets used in medical institutions require the medical staff to manually exhaust, that is, the medical staff inverts the drip funnel or strangles the drip funnel with one hand, then pinches the drip funnel with the other hand and releases it, and uses the elasticity of the drip funn...

AI Technical Summary

Problems solved by technology

This process is time-consuming, accounting for about one-third of the entire infusion operation. When the patient is in a hurry for a long time, there may be residual exhaust gas; the high operation requirements are not conducive to beginners' mastering, and the liquid may be damaged due to incorrect operation or unskilled operation. A lot of waste or exhaust residue; and due to the design defect of the infusion set, there is also a dead angle of exhaust, which makes it difficult to remove the air bubbles in the dead angle

[0003] In addition, when the nurse performs the operation of changing the bottle, close the regulator first according to the routine operation, insert the puncture device into the second bottle, and then open the regulator. Push down the adjustment wheel, the stopped liquid medicine will be pulled down, the water in the liquid medicine film will be sucked down, the gas will enter the liquid medicine film, when the second bottle is inserted and the regulator is opened again, the air bubbles will enter the liquid medicine film. Below the membrane, it flows into the drip funnel downcomer, causing venting problems when changing bottles

At the same time, when the nurse is changing the bottle, the pressure of the second bottle is often too high. The high bottle pressure has the same effect as pushing the adjustment wheel downward, and the exhaust problem will also occur.

[0004] In the prior art, there is no infusion set that can solve the above technical problems simultaneously

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