Abstract: Background:In hospitals, patients placed in Intensive Care Units need constant and close monitoring and require special equipment to ensure their normal bodily functions. The problem is how to continuously monitor each patient while ensuring the privacy of their information? And what technology to choose as a medium of wireless communication? Objective:The aim of this work is to propose a novel wireless system for surveillance in intensive care units in hospitals. This system will have no interference issue with hospital equipment and will ensure the privacy of patient information. In addition, it has many other functionalities that facilitate patient surveillance. Methods:Interested by the challenge of the reliable transmission of visual data in the proposed system, a simulation under ns-3 is developed to evaluate the performance of the used wireless technology and to compare it with Wi-Fi channels in terms of video transmission in a Wireless Visual Sensor Network. Results:Our results reveal the high fidelity of the reconstructed videos transmitted via the used technology in our system compared to those transmitted via Wi-Fi channels. Conclusion:The proposed system will provide a high level of security, high speed of data transmission, low energy consumption and it will have no interference issue with the hospital equipment.