Patent ID: 7526340

Claim:
A method for determining a physiological measurement ratio for incorporation in a neurological event detection calculation used to analyze a neurological event status of a patient and carried out by a self-powered Implantable Medical Device (IMD) or a self-powered wearable medical device, the method comprising: obtaining a first signal indicative of a first physiological measurement, wherein the first signal is represented in a first fixed point number; obtaining a second signal indicative of a second physiological measurement, wherein the second signal is represented in a second fixed point number; determining a ratio approximation of a ratio of the first fixed point number divided by the second fixed point number, the ratio approximation determining including raising 2 to the power of the difference between a most significant set bit position of the second fixed point number and a most significant set bit position of the first fixed point number; and detecting a neurological event based on the ratio approximation with the self-powered IMD or the self-powered wearable medical device.