A blood collection monitor is a device used during the blood collection process to provide a shaking moment to the blood being received from the donor thereby mixing the blood homogeneous with the anticoagulants in the blood bag. The shaking moment and anticoagulants prevent blood coagulation. The amount of blood to be collected varies from donor to donor which ranges from 350 ml to 450 ml. The existing electronic blood collection monitors being used in hospitals and laboratories include not only mechanical but also an electric mechanism that provides oscillations to a blood bag, quantify the blood amount and measure the flow of blood. However, the dependency of these devices on external electric power sources limits its application in rural areas as well as large-scale donation camps. The present study offers a mechanical blood collection monitor which does not require any external power for its functioning and thereby overcomes the drawbacks of the conventional device. The present paper offers the design considerations and systematic study of the proposed mechanical blood collection monitor. Additionally, the linkage mechanism and associated gear train were analysed using ANSYS and ADAMS which further opens up the ways to study the variations in kinetic energy and torquing moment. © 2021