This scientific paper presents the development of a portable automatic chest compressor device using a rod-crank-piston mechanism. The main focus is on assessing the feasibility of manufacturing the device in Bolivia, primarily using 3D printing technology and locally accessible components to create an economical device. The methodology involved reviewing appropriate techniques of Cardiopulmonary Resuscitation (CPR), analyzing the proposed mechanism, and researching chest compression devices available in the market for insights. Using this information as a foundation, a device was inspired by the Weil Mini model, implementing a rod-crank-piston mechanism for compressions. The prototype construction progressed through different phases, culminating in a portable device with manual control and the ability to store treatment data in a wirelessly connected application, allowing equipment maintenance by the service personnel. The tests carried out produced satisfactory results, demonstrating that the device correctly compressed a calibrated CPR mannequin, accomplishing all the requirements established by the American Heart Association (AHA) standards. Additionally, the software development implemented safety systems, and the creation of the web application for maintenance and data logging represent distinctive features of the prototype.