Single-sided PCBs find valuable applications in the construction of simple circuits within medical equipment, providing a reliable and cost-effective solution for various essential functions. In the medical field, where safety, accuracy, and reliability are of paramount importance, single-sided PCBs can be used in a range of devices, from basic diagnostic tools to simple monitoring systems.

　　For example, in blood pressure monitors, single-sided PCBs play a key role in signal processing and display. The pressure sensor in a blood pressure monitor generates electrical signals based on the pressure changes in the cuff. These weak signals are transmitted to the single-sided PCB, where they are amplified, filtered, and processed. The PCB then calculates the systolic, diastolic, and mean arterial pressure values and displays them on an LCD or LED screen. The simplicity of the circuit layout on a single-sided PCB makes it suitable for this application, as the relatively straightforward signal processing and display control functions can be easily implemented.

　　In basic patient monitoring systems, such as those used in hospitals or clinics to measure heart rate and body temperature, single-sided PCBs are also commonly employed. Heart rate sensors, which may use photoplethysmography (PPG) or electrocardiography (ECG) techniques, send electrical signals to the single-sided PCB. The PCB processes these signals, removing noise and extracting the relevant information about the heart rate. Similarly, temperature sensors, such as thermistors or infrared sensors, interface with the PCB to measure and report the patient's body temperature. The processed data is then transmitted to a central monitoring station or displayed locally on a bedside monitor. The use of single-sided PCBs in these systems helps keep the cost down while ensuring reliable operation, which is essential for continuous patient care.

　　Single-sided PCBs can also be used in simple medical devices like nebulizers. In a nebulizer, the PCB controls the operation of the motor that drives the compressor or ultrasonic transducer, which converts liquid medication into a fine mist. The PCB can regulate the power supply to the motor, ensuring a consistent and appropriate output for effective drug delivery. Additionally, it can monitor the status of the device, such as the remaining medication level or any malfunctions, and provide visual or audible alerts to the user. Overall, single-sided PCBs offer a practical and economical solution for implementing the simple yet vital circuits in medical equipment, contributing to the accurate diagnosis, treatment, and monitoring of patients.