Patent ID: 11937975
Assignee: BIOSENSE WEBSTER (ISRAEL) LTD.
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A

Claim 0:
1. A device comprising:
a catheter configured to be inserted into an intra-body cavity of a patient;
an ultrasonic transducer array comprising a plurality of multi-frequency ultrasonic transducers arranged on the catheter,
each transducer of the plurality of multi-frequency ultrasonic transducers configured to transmit a wide beam ultrasonic signal and a narrow beam ultrasonic signal, wherein the wide beam ultrasonic signal has a lower frequency than the narrow beam ultrasonic signal, and
each transducer of the plurality of multi-frequency ultrasonic transducers configured to receive wide beam echo signals and narrow beam echo signals in response to the wide beam ultrasonic signal and the narrow beam ultrasonic signal; and

a processor configured to:
time-align at least one of the received wide beam echo signals and at least one of the received narrow beam echo signals, and
detect free space of the intra-body cavity by determining whether a minimum of a combination of the time-aligned signals is below a threshold.