Gravity Driven Negative Pressure Drains

Abstract

The invention relates to a medical device, in particular to a gravity-driven negative pressure drainage device. It includes a liquid storage tank, a drainage tube installed on the liquid storage tank, and a negative pressure tube. The negative pressure tube is connected to a negative pressure generator, and the negative pressure generator includes a fixed plate and a moving plate arranged coaxially. The fixed plate and the The movable disk is a disc body arranged vertically, and the fixed disk is fixedly arranged. The movable disk is rotatably arranged on the front of the fixed disk. A negative pressure access hole connected to a negative pressure tube is provided on the upper end of the fixed disk. The lower end is provided with an exhaust hole; the upper negative pressure hole, the lower negative pressure hole, the lower air hole, and the upper air hole are correspondingly arranged on the moving disk, and an upper casing and a lower casing are arranged on the front of the moving disk. The gravity-driven negative pressure diverter is driven by liquid gravity, does not require electric energy, has long negative pressure duration, stable pressure, and high reliability.

Description

technical field [0001] The invention relates to a medical device, in particular to a gravity-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, and po...

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

Images