Negative pressure assisted automatic venting device

By introducing an electric push rod and a pressure sensor into the negative pressure unit, the pressure inside the negative pressure unit is automatically monitored and adjusted, solving the problem of frequent negative pressure adjustments and achieving stable operation and efficient operation of the negative pressure unit.

CN224370322UActive Publication Date: 2026-06-19SHANGHAI EAST HOSPITAL EAST HOSPITAL TONGJI UNIV SCHOOL OF MEDICINE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI EAST HOSPITAL EAST HOSPITAL TONGJI UNIV SCHOOL OF MEDICINE
Filing Date
2025-04-11
Publication Date
2026-06-19

AI Technical Summary

⚠Technical Problem

Existing disposable medical negative pressure drainage devices require frequent adjustments to the negative pressure to cope with pressure changes caused by the accumulation of drainage fluid, which consumes manpower and time and affects the stability of the equipment.

⚗Method used

The system uses an electric push rod and a pressure sensor in conjunction with a solenoid valve to automatically monitor and adjust the pressure inside the negative pressure unit. When the pressure exceeds the preset range, the gas and liquid are discharged through the push plate of the electric push rod, thus achieving automatic venting.

🎯Benefits of technology

It enables the negative pressure device to quickly and automatically adjust when pressure fluctuates, avoiding manual intervention, ensuring that the equipment operates in a stable negative pressure environment, and improving operational efficiency.

✦ Generated by Eureka AI based on patent content.
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Abstract

The utility model relates to medical instrument technical field, concretely for negative pressure ware auxiliary automatic exhaust device, including the casing, the inside wall of casing is installed with electric push rod, the telescopic end fixedly connected with push plate of electric push rod, one end fixedly connected with pressure sensor of push plate, one side of casing is equipped with two solenoid valves symmetrically, the outside wall of solenoid valve is installed with joint, the utility model discloses in the process of using, the pressure situation inside negative pressure ware is monitored in real time, when detecting because various reasons lead to pressure to exceed preset negative pressure range, electric push rod drives push plate to remove, and push plate extrudes negative pressure ware, and the gas and liquid of inhaling in negative pressure ware are discharged through the discharge pipe connected with joint, and the excess gas is discharged fast and effectively, makes the negative pressure in negative pressure ware recover to the set value rapidly, avoids the tedious operation that needs manual frequent adjustment negative pressure because of pressure fluctuation, ensures that negative pressure ware is always in stable negative pressure environment and runs.
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