Constant pressure variable flow insufflator and method of controlling same

By using the control and pneumatic systems of the constant pressure variable flow pneumoperitoneum machine, the pneumoperitoneum pressure and flow rate are monitored in real time. The time detection formula is used to determine abnormalities in the air path, which solves the problem of air path blockage caused by false overpressure in the pneumoperitoneum machine and ensures the normal operation of the equipment.

CN115956963BActive Publication Date: 2026-06-23ZHEJIANG HEALNOC TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG HEALNOC TECH CO LTD
Filing Date
2021-10-11
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing pneumoperitoneum machines are prone to false overpressure during use, which can lead to airway blockage and prevent the equipment from functioning properly.

Method used

The constant pressure variable flow pneumoperitoneum machine uses a combination of control and pneumatic systems. It uses flow sensors, pneumoperitoneum pressure sensors and anomaly monitoring modules to monitor pneumoperitoneum pressure and flow in real time. It uses time detection formula to judge air circuit abnormalities and control the operation of proportional flow valve to prevent false overpressure and air circuit blockage.

Benefits of technology

It effectively prevents false overpressure, ensures the normal operation of the pneumoperitoneum machine, avoids airway blockage, and improves the reliability and safety of the equipment.

✦ Generated by Eureka AI based on patent content.

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    Figure CN115956963B_ABST
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Abstract

The application relates to a constant-pressure variable-flow gas insufflation machine and a control method thereof, wherein the gas insufflation machine comprises a shell, a control system and a pneumatic system arranged in the shell; the pneumatic system comprises a multi-stage pressure-reducing valve, a proportional flow valve, a flow sensor, an external puncture device, a gas insufflation pressure sensor and a pressure relief valve arranged on a gas path; and the control system comprises a controller and an abnormality monitoring module. According to the application, the acquired gas insufflation pressure value and the detected flow value are detected by using a time detection formula to obtain an abnormality detection result, so as to determine whether false overpressure or gas path blockage occurs; and the proportional flow valve is controlled to work by the controller according to the abnormality detection result, so that the normal work of the gas insufflation machine is ensured; and the problem that false overpressure exists in the related art, the false overpressure causes misjudgment of gas path blockage, and the gas insufflation machine cannot be normally used is solved.
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