Cardiac arrests are common worldwide due to unhealthy lifestyle and food habits. Cardiopulmonary Resuscitation (CPR) is an effective way of saving patients immediately after cardiac arrest. Manual CPR is traditionally popular wherein chest compressions are given by a single or double rescuer. This involves adequate training to do CPR and manual fatigue also is unavoidable. Even qualified professionals may struggle to perform chest compressions at the CPR recommended depth and rate. Thus, robotic chest compression manipulators are explored to improve resuscitation. The combination of robotics and automation may improve patient survival rate. Our aim is to develop a device to perform high-quality compressions per minute up to 50 mm depth as per the AMERICAN HEART ASSOCIATION (AHA) protocol. The device consists of three pneumatically soft-actuated air muscles which are designed to work together to compress between  80-120 times per minute at 260 newton. A solenoid valve regulates airflow while a microprocessor controls compression. The solenoid coil's deactivation duration is precisely controlled to 50 milliseconds to create compression depth equivalent to one-third of the manikins  chest breadth. Our test results showed that  the developed device’s performance on the  specialized CPR manikin (Resusci Anne QCPR, Norway) is comparable to manual compression readings as per AHA protocols. Thus, we propose it as a new suitable concept and design for mechanical CPR device for  hospital and out-of hospital environments.