ELECTROMAGNETIC DISTORTION DETECTION AND COMPENSATION

• Main Authors: GRAETZEL, Chauncey F, KONDURI, Shyamprasad, MALININ, Yuriy, SRINIVASAN, Subashini
• Format: Patent
• Language: English; French; German
• Published: 06.09.2023
• Subjects: CHAIRS FOR DENTISTRY; DIAGNOSIS; FUNERAL DEVICES; HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATIONTECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING ORPROCESSING OF MEDICAL OR HEALTHCARE DATA; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTEDFOR SPECIFIC APPLICATION FIELDS; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; MEDICAL OR VETERINARY SCIENCE; OPERATING TABLES OR CHAIRS; PHYSICS; SURGERY; TESTING; TRANSPORT OR ACCOMODATION FOR PATIENTS

Systems and methods for electromagnetic (EM) distortion detection and compensation are disclosed. In one aspect, the system includes an instrument, the system configured to: determine a reference position of the distal end of the instrument at a first time based on EM location data, determine that the distal end of the instrument at a second time is static, and determine that the EM location data at the second time is indicative of a position of the distal end of the instrument having changed from the reference position by greater than a threshold distance. The system is further configured to: determine a current offset based on the distance between the position at the second time and the reference position at the first time, and determine a compensated position of the distal end of the instrument based on the EM location data and the current offset.