JPWO2021008907A5 - - Google Patents
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- JPWO2021008907A5 JPWO2021008907A5 JP2022500902A JP2022500902A JPWO2021008907A5 JP WO2021008907 A5 JPWO2021008907 A5 JP WO2021008907A5 JP 2022500902 A JP2022500902 A JP 2022500902A JP 2022500902 A JP2022500902 A JP 2022500902A JP WO2021008907 A5 JPWO2021008907 A5 JP WO2021008907A5
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- contact force
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Claims (15)
前記カテーテルの第１の電極から第１の電気信号を送信し、
前記カテーテルの第２の電極から第２の電気信号を送信し、
前記カテーテルの第３の電極から第３の電気信号を送信するステップと、
前記第１の電極、前記第２の電極、および前記第３の電極を使用して、前記第１の電気信号、前記第２の電気信号、および前記第３の電気信号に関連付けられた複数の電圧を測定するステップと、
前記複数の電圧に基づき第１の電極間インピーダンスを計算するステップと、
前記複数の電圧に基づき第２の電極間インピーダンスを計算するステップと、
複数の仮想角度のそれぞれについて、第１の仮想接触力および第２の仮想接触力を計算するステップであって、前記第１の仮想接触力および前記第２の仮想接触力はそれぞれ、前記第１の電極間インピーダンスおよび前記第２の電極間インピーダンスに基づいて計算され、したがって前記第１の仮想接触力および前記第２の仮想接触力が前記複数の仮想角度のそれぞれについて計算される、ステップと、
前記第１の仮想接触力と前記第２の仮想接触力とが互いにどのくらい近いかに基づいて、前記仮想角度のうちのどれを推定される接触角として用いるか、又は、どの仮想角度が補間できるかを求めるために、前記複数の仮想角度のそれぞれについて計算された前記第１の仮想接触力と前記第２の仮想接触力との比較に基づき、前記接触角を求めるステップと、
前記接触角を表現する信号を出力するステップとを含む、方法。 A method of determining a contact angle between a catheter and tissue in the body, the method comprising:
transmitting a first electrical signal from a first electrode of the catheter;
transmitting a second electrical signal from a second electrode of the catheter;
transmitting a third electrical signal from a third electrode of the catheter;
A plurality of electrical signals associated with the first electrical signal, the second electrical signal and the third electrical signal using the first electrode, the second electrode and the third electrode measuring the voltage;
calculating a first inter-electrode impedance based on the plurality of voltages;
calculating a second inter-electrode impedance based on the plurality of voltages;
calculating a first virtual contact force and a second virtual contact force for each of a plurality of virtual angles, wherein the first virtual contact force and the second virtual contact force are each equal to the first virtual contact force; is calculated based on the inter-electrode impedance of and the second inter-electrode impedance of and thus the first virtual contact force and the second virtual contact force are calculated for each of the plurality of virtual angles;
which of the virtual angles to use as the estimated contact angle or which virtual angles can be interpolated based on how close the first virtual contact force and the second virtual contact force are to each other; determining the contact angle based on a comparison of the first virtual contact force and the second virtual contact force calculated for each of the plurality of virtual angles to determine
and outputting a signal representative of said contact angle.
前記第２の電気信号を送信するステップは、第２の周波数で前記第２の電気信号を送信することを含み、
前記第３の電気信号を送信するステップは、第３の周波数で前記第３の電気信号を送信することを含み、
前記第１の周波数、前記第２の周波数、および前記第３の周波数は互いに異なる、請求項１に記載の方法。 transmitting the first electrical signal comprises transmitting the first electrical signal at a first frequency;
transmitting the second electrical signal comprises transmitting the second electrical signal at a second frequency;
transmitting the third electrical signal comprises transmitting the third electrical signal at a third frequency;
2. The method of claim 1, wherein said first frequency, said second frequency and said third frequency are different from each other.
前記第１の周波数で前記第１の電極を使用して第１の電圧を測定するステップと、
前記第２の周波数で前記第１の電極を使用して第２の電圧を測定するステップとを含む、請求項２に記載の方法。 Measuring the plurality of voltages comprises:
measuring a first voltage using the first electrode at the first frequency;
and measuring a second voltage using the first electrode at the second frequency.
前記第２の周波数で前記第２の電極を使用して第３の電圧を測定するステップと、
前記第３の周波数で前記第２の電極を使用して第４の電圧を測定するステップとを含む、請求項３に記載の方法。 Measuring the plurality of voltages comprises:
measuring a third voltage using the second electrode at the second frequency;
and measuring a fourth voltage using the second electrode at the third frequency.
体内の組織に対してある接触角で接触するカテーテルと通信するプロセッサ回路とを備える装置であって、前記プロセッサ回路は、
前記電気生成器および測定器を制御することによって、
前記カテーテルの第１の電極から第１の電気信号を送信し、
前記カテーテルの第２の電極から第２の電気信号を送信し、
前記カテーテルの第３の電極から第３の電気信号を送信し、
前記第１の電極、前記第２の電極、および前記第３の電極を使用して、前記第１の電気信号、前記第２の電気信号、および前記第３の電気信号に関連付けられた複数の電圧を測定し、
前記複数の電圧に基づき第１の電極間インピーダンスを計算し、
前記複数の電圧に基づき異なる第２の電極間インピーダンスを計算し、
複数の仮想角度のそれぞれについて、第１の仮想接触力および第２の仮想接触力を計算し、ここで、前記第１の仮想接触力および前記第２の仮想接触力はそれぞれ、前記第１の電極間インピーダンスおよび前記第２の電極間インピーダンスに基づいて計算され、したがって前記第１の仮想接触力および前記第２の仮想接触力が前記複数の仮想角度のそれぞれについて計算され、
前記第１の仮想接触力と前記第２の仮想接触力とが互いにどのくらい近いかに基づいて、前記仮想角度のうちのどれを推定される接触角として用いるか、又は、どの仮想角度が補間できるかを求めるために、前記複数の仮想角度のそれぞれについて計算された前記第１の仮想接触力と前記第２の仮想接触力との比較に基づき、前記接触角を求め、
前記接触角を表現する信号を出力する、装置。 electricity generators and meters;
a processor circuit in communication with a catheter contacting tissue in the body at a contact angle, the processor circuit comprising:
By controlling the electrical generator and meter,
transmitting a first electrical signal from a first electrode of the catheter;
transmitting a second electrical signal from a second electrode of the catheter;
transmitting a third electrical signal from a third electrode of the catheter;
A plurality of electrical signals associated with the first electrical signal, the second electrical signal and the third electrical signal using the first electrode, the second electrode and the third electrode measure the voltage,
calculating a first inter-electrode impedance based on the plurality of voltages;
calculating different second inter-electrode impedances based on the plurality of voltages;
A first virtual contact force and a second virtual contact force are calculated for each of a plurality of virtual angles, wherein the first virtual contact force and the second virtual contact force are each equal to the first virtual contact force calculated based on the inter-electrode impedance and the second inter-electrode impedance so that the first virtual contact force and the second virtual contact force are calculated for each of the plurality of virtual angles;
which of the virtual angles to use as the estimated contact angle or which virtual angles can be interpolated based on how close the first virtual contact force and the second virtual contact force are to each other; determining the contact angle based on a comparison of the first virtual contact force and the second virtual contact force calculated for each of the plurality of virtual angles to determine
A device that outputs a signal representing the contact angle.
前記第１の電極から第１の周波数で前記第１の電気信号を送信し、
前記第２の電極から第２の周波数で前記第２の電気信号を送信し、
前記第３の電極から第３の周波数で前記第３の電気信号を送信し、
前記第１の周波数、前記第２の周波数、および前記第３の周波数は互いに異なる、請求項７に記載の装置。 The processor circuit controls the electricity generator and the meter to:
transmitting the first electrical signal at a first frequency from the first electrode;
transmitting the second electrical signal at a second frequency from the second electrode;
transmitting the third electrical signal at a third frequency from the third electrode;
8. The apparatus of claim 7, wherein said first frequency, said second frequency and said third frequency are different from each other.
前記第１の電極を使用して前記第１の周波数の第１の電圧を測定し、
前記第１の電極を使用して前記第２の周波数の第２の電圧を測定する、請求項８に記載の装置。 The processor circuit controls the electricity generator and the meter to:
measuring a first voltage at the first frequency using the first electrode;
9. The apparatus of claim 8, wherein said first electrode is used to measure a second voltage at said second frequency.
前記第２の電極を使用して前記第２の周波数の第３の電圧を測定し、
前記第２の電極を使用して前記第３の周波数の第４の電圧を測定する、請求項９に記載の装置。 The processor circuit controls the electricity generator and the meter to:
measuring a third voltage at the second frequency using the second electrode;
10. The apparatus of claim 9, wherein said second electrode is used to measure a fourth voltage at said third frequency.
前記第１の電極、前記第２の電極、および前記第３の電極を遠位部に有する前記カテーテルとを備える、システム。 a device according to any one of claims 7 to 13;
A system comprising said catheter having said first electrode, said second electrode and said third electrode at a distal portion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP19186049.3A EP3763289A1 (en) | 2019-07-12 | 2019-07-12 | Estimating contact angle between a catheter and tissue, and associated devices, systems and methods |
| EP19186049.3 | 2019-07-12 | ||
| PCT/EP2020/068921 WO2021008907A1 (en) | 2019-07-12 | 2020-07-06 | Estimating contact angle between a catheter and tissue, and associated devices, systems and methods |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2022540590A JP2022540590A (en) | 2022-09-16 |
| JPWO2021008907A5 true JPWO2021008907A5 (en) | 2023-07-13 |
Family
ID=67437726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2022500902A Pending JP2022540590A (en) | 2019-07-12 | 2020-07-06 | Estimation of contact angles between catheters and tissue, and related devices, systems, and methods |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11883152B2 (en) |
| EP (2) | EP3763289A1 (en) |
| JP (1) | JP2022540590A (en) |
| CN (1) | CN114173651A (en) |
| WO (1) | WO2021008907A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4079243A1 (en) | 2021-04-23 | 2022-10-26 | Koninklijke Philips N.V. | Sensing for a catheter |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012512727A (en) * | 2008-12-19 | 2012-06-07 | カーディアック ペースメイカーズ， インコーポレイテッド | Apparatus, method and system including cardiac pacing |
| US20160143686A1 (en) * | 2014-11-19 | 2016-05-26 | Stereotaxis, Inc. | Inter-electrode impedance for detecting tissue distance, orientation, contact and contact quality |
| WO2016181315A1 (en) | 2015-05-12 | 2016-11-17 | Navix International Limited | Contact quality assessment by dielectric property analysis |
| EP3568068A1 (en) | 2017-01-12 | 2019-11-20 | Navix International Limited | Systems and methods for reconstruction of intra-body electrical readings to anatomical structure |
-
2019
- 2019-07-12 EP EP19186049.3A patent/EP3763289A1/en not_active Withdrawn
-
2020
- 2020-07-06 WO PCT/EP2020/068921 patent/WO2021008907A1/en unknown
- 2020-07-06 EP EP20737149.3A patent/EP3996587A1/en active Pending
- 2020-07-06 CN CN202080050760.7A patent/CN114173651A/en active Pending
- 2020-07-06 JP JP2022500902A patent/JP2022540590A/en active Pending
- 2020-07-06 US US17/625,988 patent/US11883152B2/en active Active
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