Hydraulic-driven type negative pressure drainage set

Abstract

The invention relates to medical instruments, in particular to a hydraulic-driven type negative pressure drainage set. The hydraulic-driven type negative pressure drainage set comprises a liquid storage tank, a drainage tube and a negative pressure tube, wherein the drainage tube and the negative pressure tube are arranged on the liquid storage tank; the negative pressure tube is connected with a negative pressure generator; the negative pressure generator comprises a fixed disc and a movable disc which are coaxially arranged; the fixed disc and the movable disc are both disc bodies which are vertically arranged; the fixed disc is fixedly arranged; the movable disc is rotationally arranged on the front surface of the fixed disc; a negative pressure switch-in hole which is connected with the negative pressure tube is formed in the upper end of the fixed disc; an exhaust hole is formed in the lower end of the fixed disc; an upper negative pressure hole, a lower negative pressure hole, a lower vent hole and an upper vent hole are correspondingly formed in the movable disc; the front surface of the movable disc is provided with an upper shell and a lower shell. The hydraulic-driven type negative pressure drainage set disclosed by the invention is driven by adopting the gravity action of liquid, electric energy is not needed, the duration time of negative pressure is long, the pressure is stable, and the reliability is high.

Description

technical field [0001] The invention relates to a medical device, in particular to a hydraulically driven negative pressure drainage device. Background technique [0002] For a variety of patients after surgery, negative pressure drainage is often used to draw the exudate from the wound surface out of the body or negatively compress the small wound wound cavity, which is beneficial to the healing of the wound tissue. This kind of negative pressure drainage requires a long duration of negative pressure, stable and controllable pressure. The working principle of the existing negative pressure drainage device can be divided into two types according to the power source, one is a negative pressure drainage ball driven by manpower or a piston tube type negative pressure generator similar to a syringe, and the other is a pressure generator driven by a motor. Pump type negative pressure generator. The human-driven negative pressure generator has short duration, unstable pressure, ...

AI Technical Summary

Problems solved by technology

The human-driven negative pressure generator has short duration, unstable pressure, and poor reliability. Since the negative pressure chamber and the liquid storage chamber use the same container, it cannot be used continuously and is prone to cross-infection; the pressure pump negative pressure generator has a long duration , the negative pressure chamber and the liquid storage chamber use two different containers respectively, which eliminates the risk of cross-infection, but there are still problems of unstable pressure and poor reliability. Once the pressure pump fails, it will affect the normal operation of the drainage device

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