The goal of this research is to assist patients who have lost their hands due to an accident, a chronic illness, or a birth condition. The artificial arm will be lightweight, have faster actuation, and be able to execute all necessary functions. It will be 3D printed using filament made of polylactic acid (PLA). In order to address the drawback of employing the cable-driven actuation mechanism, which results in reduced structure durability and imprecise motion range, this work offers a robot hand structure with better features (four-bar linkage mechanism).The improvements made possible by using the suggested design are shown in this paper, including the use of a four-bar linkage mechanism in place of a cable-driven mechanism, the use of five fingers with finished joints where each finger is moved by a motor individually, joint protection using a mechanical stopper, and a detachable finger structure from the hand. Current bionic hands have limited functionality and are cost prohibitive. When a user puts on their bionic arm and flexes muscles in their residual limb just below their elbow, these sensors detect naturally generated tiny electric signals, and convert these into intuitive and proportional bionic hand movement. Multiple options for signal input and control algorithms are presented. A prototype will serve as a platform for future programming effort.