Infusion apparatus capable of automatically stopping liquid and preventing blood return

Abstract

The invention discloses an infusion apparatus capable of automatically stopping liquid and preventing blood return. The infusion apparatus comprises a liquid sealing pool device, a bottle stopper puncture outfit, a vent valve, a drip chamber, a spiral connector, an intravenous infusion needle, a flow regulator and an infusion hose. According to the invention, the liquid seal pool cavity of the liquid seal pool device can automatically store liquid medicine, and the liquid medicine in the liquid seal pool cavity is effectively utilized to form static pressure and sealing effects, so that air is prevented from entering veins of a human body after the liquid medicine in an infusion bottle is completely infused; the liquid static pressure in the infusion bottle is zero, the atmospheric pressure, the liquid static pressure in the cavity of the liquid seal pool and the human body venous pressure in the wall of the infusion hose are kept in a constant pressure state, and the infusion set achieves the automatic liquid stopping and blood return preventing functions. When infusion is finished every time, a nurse does not need to repeatedly confirm that redundant air left in the infusion hose is manually discharged for the second time, the nursing workload is greatly reduced, the position of the cavity of the liquid sealing pool device is slightly squeezed after liquid is automatically stopped, remaining liquid medicine in the cavity of the liquid sealing pool can be completely infused, and the nursing quality is improved.

Description

technical field [0001] The invention relates to the technical field of transfusion by effectively utilizing the principles of water seal and static pressure, in particular to an infusion set for automatically stopping liquid and preventing blood return. Background technique [0002] Water seal, that is, water seal, is generally used for the sealing of low-pressure gas. Specifically, it refers to a liquid column with a certain height in the device to prevent gas from entering the drain pipe. It is usually realized by a trap ( Such as figure 1 shown). [0003] Intravenous infusion is the physical principle of using the height of the medicinal liquid (liquid) to form static pressure and atmospheric pressure, and inject the medicinal liquid into the human body. The medicine in the infusion bottle is affected by atmospheric pressure and gravity, so that the medicine flows into the infusion hose to form a water column. When the water column pressure (atmospheric pressure + stati...

AI Technical Summary

Problems solved by technology

[0005] At present, when ordinary infusion sets are used for infusion or fluid replacement, if large air bubbles are mixed into the infusion hose, it may cause venous air embolism in patients, which may even be life-threatening.

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