Patent ID: 11911143
Assignee: nan
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 19:
20. A method for maintaining a stable spatial reference frame relative to cardiac anatomy within a patient's heart, comprising:
introducing a first distal portion of a first elongate member into the patient's heart such that a first sensor carried on the first distal portion is positioned within a coronary sinus;
advancing a second distal portion of a second elongate member from the first elongate member such that a second sensor carried on the second distal portion is positioned within a tributary vein such that a distance between the first sensor and the second sensor is adjusted;
generating an electromagnetic field that encompasses the patient's heart to provide an external reference frame;
receiving signals from the first and second sensors to identify locations of the first and second sensors relative to the external reference frame;
identifying when the locations of the first and second sensors move relative to the external reference frame to identify movement of the patient's heart; and
compensating for movement of the patient's heart in images presented on a display.