This article is referred to an innovative wireless device for ECG patient monitoring during minimally invasive surgery. Our aim is to create new type of laparoscopy instruments to improve healthcare. The work presents a wireless device for ECG (DECG) as part of a robotic modular laparoscopic instrument (RMLI). Thus, the device allows ECG analysis and monitoring of the patient to be carried out complexly in combination with other diagnostic and therapeutic (RMLI) mode of operation activities. The proposed device provides detection and rapid warning of abnormal heart rate during surgery. Innovative uMAC wireless network stack is designed for module-control block communication. Control computer program processes and monitors (remotely or directly) received information from wireless device that is connected to patient. The software of the device is developed in Tcl/Tk scripting language for operation under Windows.