pulse stretcher

例句：

1. 1. The pulse stretcher wasused to measure the heart rate of patientsduring surgery.
   脉搏拉伸器用于在手术期间测量患者的心率。
2. 2. The doctor recommended using apulse stretcher to monitor the patient's blood pressure.
   医生建议使用脉搏拉伸器来监测患者的血压。
3. 3. The pulsestretcher was found tobe an effective tool for monitoringthe patient's vital signs.
   脉搏拉伸器被发现是一种有效的工具，用于监测患者的体征。