Medical ventilators play a crucial role in clinical settings by replacing or assisting a patient’s spontaneous breathing functions. If the temperature of the gas that has undergone humidification treatment is too hot, it may cause burns in the patient’s respiratory tract; if it’s too low, it may lead to discomfort or even trigger bronchospasms. Therefore, installing EXSENSE medical NTC thermistors in the breathing circuit of medical ventilator for real-time temperature monitoring has become an industry standard.
To effectively prevent temperature deviations caused by heat loss in the breathing circuit or uneven heating in the humidification unit and to ensure the inhaled air remains at a stable temperature, the installation positions for EXSENSE medical NTC thermistors in a medical ventilator are mainly focused on three key areas. First, inside the heating chamber to monitor pretreated gas temperature; second, within the breathing circuit to monitor the temperature of the delivered gas; and third, at the front-end breathing mask to monitor the terminal gas temperature. During ventilator operation, the NTC works with a voltage divider resistor, MCU, and signal conditioning circuit to form a closed-loop temperature monitoring system. If the temperature exceeds clinical thresholds, the system sends instructions the MCU to start or stop the device, adjust airflow speed, and correct the supplied gas temperature, ensuring the temperature measurement precision of the medical ventilator meets the clinical compliance standards
The reason why EXSENSE medical NTC thermistors can handle the demanding conditions of medical ventilator and support efficient and stable operation is that:
1. Excellent Sensitivity: NTCs can quickly capture real-time changes in breathing airflow temperature, promptly responding to heating delays in the humidification module or abnormal heat loss in the airflow, avoiding risks caused by delayed temperature control.
2. High Accuracy: The accuracy of EXSENSE thermistors can reach ±0.5%, providing precise raw data for ventilator temperature control algorithms, ensuring treatment parameters are consistent and standardized, keeping the inhaled air at a safe and comfortable temperature, reducing the risk of patient discomfort or tissue damage due to large temperature deviations.
3. Small Size: The sensing head of the medical NTCs can be integrated into tight spaces within the breathing circuit without taking up much installation space, while not interfering with airflow efficiency.
From water temperature control in the humidifier of medical ventilator to adjusting the gas temperature in the breathing circuit, EXSENSE medical NTC thermistors are embedded throughout the entire respiratory gas temperature management process, providing important technical support for safe and effective treatment. With the help of EXSENSE medical NTC thermistors, medical ventilator improves response speed, reduce operational errors, and strongly support high-precision clinical treatments, especially in intensive care, neonatal respiratory assistance, chronic respiratory disease management, etc.
