Negative-pressure drainage device capable of working continuously

Abstract

The invention relates to a medical instrument, in particular to a negative-pressure drainage device capable of working continuously. The device comprises a liquid storage tank, a drainage pipe and a negative-pressure pipe, wherein the drainage pipe and the negative-pressure pipe are installed on the liquid storage tank, the negative-pressure pipe is connected with a negative pressure generator, the negative pressure generator comprises a rotary drum and a slip ring installed on the rotary drum in a sleeving and rotating mode, and the rotary drum and the slip ring are coaxially arranged; an upper water tank and a lower water tank are arranged on the slip ring in an axis symmetrical mode, and a negative pressure channel and an exhaust channel are arranged in the rotary drum; a negative pressure through hole and an exhaust through hole are correspondingly formed in the slip ring, and a backboard negative pressure channel and a backboard exhaust channel are correspondingly arranged in the upper water tank and the lower water tank. The device is driven through liquid gravity, electric energy is not needed, negative pressure lasting time is long, pressure is stable, and reliability is high.

Description

technical field [0001] The invention relates to a medical device, in particular to a continuously working 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, ...

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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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