Consumer technologies have changed human life through various products for smart healthcare management. The evaluation of Internet-of-Medical-Things (IoMT) has provided the closed loop control system for point of care mechanism. The hardware security of medical devices has drawn the attention where any security breach could have catastrophic impact. The paper discusses iGLU 3.0 which includes security model of glucose measurement device along with insulin pump of IoMT framework. The novel glucose-insulin model has been proposed for glucose control of diabetes patient. The physical unclonable function (PUF) based security solution is developed for non-invasive glucometer iGLU and insulin pump for safe insulin secretion. PUF based Hardware-Assisted Security (HAS) is helpful to mitigate challenges which are present in automatic insulin delivery with iGLU.