An ultra-low-power biomedical chip for injectable pressure monitor

Implantable pressure monitors enable diagnosis and track patient health or disease progression in different organs such as the brain, eye, heart, and bladder. Miniaturization of the implantable sensors helps reduce patient pain and recovery time, decrease foreign body rejection, and allow the device to be placed in limited spaces. This paper explores a miniaturized pressure monitor which can even be injected through a syringe. Required specifications are investigated to develop the small pressure monitor. Also, low-power circuit techniques to meet extremely small power budget are discussed for a capacitive-to-digital converter, an energy harvester, and digital circuits.