Patent ID: 8485980

Claim:
A method for positioning a linear array of electrodes mounted on a distal end section of an elongated flexible member in a patient's respiratory airways at the level of the patient's diaphragm, comprising: inserting through the patient's respiratory airways a length of the elongated flexible member pre-determined to position the linear array of electrodes at the level of the patient's diaphragm; detecting through the electrodes of the linear array signals representative of an electrical activity of the patient's diaphragm (EAdi); detecting ECG signal components in the EAdi signals; and detecting a correct positioning of the linear array of electrodes in the patient's respiratory airways in response to a presence, in the EAdi signals detected by the electrodes of the linear array, of an ECG signal pattern comprising ECG signal components of a first amplitude detected by distal electrode pairs of the linear array and ECG signal components of a second amplitude, greater than the first amplitude by at least a predetermined difference, detected by proximal electrode pairs of the linear array.