US 12,076,155 B2
Systems and methods for monitoring physiological parameters during diathermy
Avi Kayton, Tel Aviv (IL); Aviem Amossi, Tel Aviv (IL); and Shauli Arazi, Tel Aviv (IL)
Assigned to MEDASENSE BIOMETRICS LTD., Ramat Gan (IL)
Appl. No. 17/261,146
Filed by MEDASENSE BIOMETRICS LTD., Ramat Gan (IL)
PCT Filed Jul. 21, 2019, PCT No. PCT/IL2019/050815
§ 371(c)(1), (2) Date Jan. 18, 2021,
PCT Pub. No. WO2020/021531, PCT Pub. Date Jan. 30, 2020.
Claims priority of provisional application 62/701,825, filed on Jul. 22, 2018.
Prior Publication US 2021/0315633 A1, Oct. 14, 2021
Int. Cl. A61B 5/00 (2006.01); A61B 5/024 (2006.01); A61B 5/0531 (2021.01); A61B 18/14 (2006.01); A61B 18/00 (2006.01)
CPC A61B 5/4035 (2013.01) [A61B 5/02416 (2013.01); A61B 5/0531 (2013.01); A61B 5/4824 (2013.01); A61B 5/7217 (2013.01); A61B 5/7225 (2013.01); A61B 5/725 (2013.01); A61B 18/14 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/00773 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A system comprising:
a sensor assembly configured to monitor a physiological status of a subject, which comprises:
an electrode-based sensor, which is configured to close an electrical conduction path passing through a body of the subject, and
at least one non-electrode-based sensor configured to monitor one or more physiological parameters of the subject during a medical interventional procedure involving an application of at least one chosen from:
1. high intensity radiofrequency electrical currents,
2. high intensity radiofrequency electrical voltages,
3. high energy radiofrequency electrical currents, and
4. high energy radiofrequency electrical voltages; and
a first electromagnetic interference (EMI) filter coupled to the electrode-based sensor and configured to suppress noise in a signal of the non-electrode-based sensor, the noise being induced, via the electrode-based sensor, by medical interventional equipment during the medical interventional procedure; and further comprising a plurality of electrical lines, a second EMI filter, a third EMI filter, an ADC, and a monitor, which comprises a processor;
wherein the plurality of electrical lines electrically associates the sensor assembly with the monitor, the plurality of electrical lines comprising:
a first line configured to transmit signals from electrode-based sensor to the monitor; and
a second line configured to transmit signals from the non-electrode-based sensor to the monitor;
wherein the first EMI filter and second EMI filter are mounted on the first line, the first EMI filter being positioned between the electrode-based sensor and the second EMI filter, and wherein the third EMI filter is mounted on the second line;
wherein the noise suppression of the signal of the non-electrode-based sensor is effected by attenuating frequencies in a first frequency range by 10 dB, or more, as compared to frequencies in a second frequency range, the first frequency range comprising the radiofrequency of the applied electrical currents or voltages, and the second frequency range comprising a sampling frequency of the sensor assembly;
wherein each of the second EMI filter and the third EMI filter is characterized by a respective frequency response curve with a magnitude of an attenuation in the first frequency range being greater by at least 10 dB than a magnitude of an attenuation in the second frequency range; and
wherein the processor is configured to assess the physiological status of a subject based at least on the signals of the non-electrode-based sensor.