Patent ID: 7771362

Claim:
A method for performing an in-vivo calibration of a blood pressure sensor that is associated with a balloon of an in-vivo balloon system, the sensor and balloon being associated such that the sensor is in-vivo when the balloon is in-vivo, the method comprising the steps of: determining a target displacement volume for the balloon system; inflating the balloon to the target displacement volume, without referring to pressure readings from the sensor, so that a gas pressure in the balloon system is indicative of a patient's blood pressure; monitoring the patient's blood pressure by observing the gas pressure while simultaneously monitoring the patient's blood pressure through the sensor; and using blood pressure readings obtained by monitoring the gas pressure as reference blood pressure measurements and determining a mathematical relationship between blood pressure measurements obtained through the sensor and the reference blood pressure measurements such that future blood pressure measurements obtained through the sensor can be modified according to the mathematical relationship to generate calibrated blood pressure measurements using a processing means.