Piston type simulation lung capable of accurately controlling compliance

By using a piston-type simulated lung device with a stepper motor and sensor system, the problems of instability and wear in existing simulated lung devices have been solved. This enables accurate lung data acquisition and multi-mode simulation, making it suitable for ventilator evaluation and medical staff training.

CN224109922UActive Publication Date: 2026-04-10TAIZHOU INST OF MEASUREMENT TECH
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Patent Information

Application Number
CN202520723644.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-16
Publication Date
2026-04-10
Estimated Expiration
2035-04-16

AI Technical Summary

Technical Problem

Existing simulated lung devices face challenges in acquiring compliance data, are unstable in operation, cannot precisely control lung activity, and suffer from wear and tear due to vibrations.

Method used

The device employs a piston-type simulated lung, which includes a stepper motor, piston head, first rod, second rod, piston cylindrical cavity, lead screw, air inlet, pressure sensor, temperature sensor, humidity sensor, and control components. It achieves precise control through a guide rod with shock absorbers and a multi-threaded structure, and is equipped with pressure, temperature, and humidity sensors to obtain accurate data.

Benefits of technology

It achieves precise simulation of different breathing modes, reduces wear caused by piston movement, obtains accurate lung data, and meets various training and treatment needs.

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Abstract

The utility model discloses a piston type simulation lung capable of accurately controlling compliance, which comprises a stepping motor, a piston head, a first rod and a second rod, and is characterized by further comprising a piston cylindrical cavity, a screw rod, an air inlet, a pressure sensor, a temperature sensor, a humidity sensor and a control assembly, the piston cylindrical cavity is of a sealed cylindrical structure, and an air inlet is formed in the axial direction of the piston cylindrical cavity; the air inlet is provided with a pressure sensor, a temperature sensor and a humidity sensor, and the pressure sensor, the temperature sensor and the humidity sensor are connected with the control assembly; the control assembly is connected with the stepping motor; a piston head is arranged in the cylindrical cavity of the piston and fixedly connected with a second rod, and the end, away from the piston head, of the second rod is perpendicularly connected with the first rod; one end of the first rod is connected with the lead screw in a matched mode, and the lead screw is connected with the stepping motor in a matched mode and used for piston movement. Precise control and simulation of the lung can be realized, and the system is suitable for various treatment and training environments.
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