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Laguna Beach, CA, United States

Patent
Advanced Cardiac Therapeutics | Date: 2015-01-09

The present invention provides systems and methods for radiometrically measuring temperature during ablation. An interface module includes a processor; a first input/output (I/O) port configured to receive digital radiometer and thermocouple signals from an integrated catheter tip (ICT) that includes a radiometer; a second I/O port configured to receive ablative energy from an electrosurgical generator; a temperature display; a patient relay in communication with the first and second I/O ports and the processor; and a computer-readable medium storing radiometer and thermocouple operation parameters and instructions for causing the processor to: calculate a temperature adjacent to the ICT based on the radiometer and thermocouple signals and the operation parameters, causing the temperature display to display the calculated temperature, and closing the patient relay so as to pass ablative energy received on the second I/O port to the first I/O port.


Methods and systems for treating tissue that employ a radiometer for temperature measurements and use feedback from the radiometer to regulate energy being applied to the tissue are provided. For example, methods and systems are provided for calculating temperature based on signal(s) from a radiometer, which may provide useful information about tissue temperature at depth, and automatically regulating energy applied to the tissue based on the tissue temperature.


Patent
Advanced Cardiac Therapeutics and Meridian | Date: 2014-05-22

According to some embodiments, systems for energy delivery to targeted tissue comprise a catheter with an ablation member, a radiometer configured to detect temperature data from the targeted tissue, a processor configured to determine a calculated temperature (e.g., an extreme temperature, such as a peak or trough temperature) within the tissue by applying at least one factor to the temperature data detected by the radiometer, the processor configured to compare the calculated temperature to a setpoint and an energy source configured to energize the ablation member and to regulate delivery of ablative energy to the targeted tissue of the subject based at least in part on the comparison. In some embodiments, the factor depends on at least one characteristic of the targeted tissue. Information regarding a tissue characteristic can be provided using information from an imaging set (e.g., intracardiac echo) or an electrical signal of the subject (e.g., electrocardiogram).


Patent
Advanced Cardiac Therapeutics and Meridian | Date: 2015-04-17

The present invention provides systems and methods for radiometrically measuring temperature and detecting tissue contact during ablation. An interface module includes a first input/output (I/O) port for receiving radiometer and thermocouple signals from an integrated catheter tip (ICT) that includes a radiometer; a second I/O port for receiving ablative energy from an electrosurgical generator; a temperature display; a patient relay; a computer-readable medium storing radiometer and thermocouple parameters and instructions for causing the processor to: calculate a temperature adjacent to the ICT based on the radiometer and thermocouple signals and the parameters; causing the temperature display to display the calculated temperature; closing the patient relay to pass ablative energy from the second to the first I/O port; determining whether the ICT is in contact with tissue based on the radiometer signal. An output device indicates whether the ICT is determined to be in contact with the tissue.


Patent
Advanced Cardiac Therapeutics | Date: 2014-05-09

Methods and systems for treating tissue that employ a radiometer for measurement and/or control are provided. For example, methods and systems are provided for radiometrically measuring temperature, such as by calculating temperature based on signal(s) from a radiometer, thereby providing useful information about tissue temperature at depth, even during an optional irrigated procedure.

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