US 12,029,866 B2
Catheter with serially connected sensing structures and methods of calibration and detection
Jeffrey L. Clark, Castaic, CA (US); George Kamin, Arcadia, CA (US); and Mark Stanley, Seal Beach, CA (US)
Assigned to Biosense Webster (Israel) Ltd., Yokneam (IL)
Filed by BIOSENSE WEBSTER (ISRAEL) LTD., Yokneam (IL)
Filed on Oct. 4, 2021, as Appl. No. 17/493,711.
Application 17/493,711 is a continuation of application No. 16/267,261, filed on Feb. 4, 2019, granted, now 11,135,400.
Application 16/267,261 is a continuation of application No. 15/865,215, filed on Jan. 8, 2018, granted, now 10,195,396, issued on Feb. 5, 2019.
Application 15/865,215 is a continuation of application No. 15/351,346, filed on Nov. 14, 2016, granted, now 9,861,785, issued on Jan. 9, 2018.
Application 15/351,346 is a continuation of application No. 14/960,273, filed on Dec. 4, 2015, granted, now 9,492,639, issued on Nov. 15, 2016.
Application 14/960,273 is a continuation of application No. 13/732,324, filed on Dec. 31, 2012, granted, now 9,204,841, issued on Dec. 8, 2015.
Prior Publication US 2022/0032009 A1, Feb. 3, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/05 (2021.01); A61B 5/00 (2006.01); A61B 5/06 (2006.01); A61B 18/12 (2006.01); A61B 18/14 (2006.01); A61M 25/01 (2006.01); A61B 18/00 (2006.01); A61B 34/20 (2016.01); A61B 90/00 (2016.01); A61M 25/00 (2006.01)
CPC A61M 25/0127 (2013.01) [A61B 5/05 (2013.01); A61B 5/062 (2013.01); A61B 5/065 (2013.01); A61B 5/6852 (2013.01); A61B 5/72 (2013.01); A61B 18/1206 (2013.01); A61B 18/1492 (2013.01); A61B 5/6885 (2013.01); A61B 2018/00357 (2013.01); A61B 2018/00577 (2013.01); A61B 2034/2051 (2016.02); A61B 2090/065 (2016.02); A61M 2025/0002 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A catheter for use with a catheterization system having a plurality of external magnetic field generators, each generating a position-data magnetic field, comprising:
a flexible tubing; and
a distal section adapted for engagement with patient tissue, the distal section having:
a proximal portion, a distal portion and a flexible joint between the proximal portion and the distal portion;
an internal magnetic field generator positioned in one of the proximal and distal portions, the internal magnetic field generator generating a pressure-data magnetic field;
three first sensing coils and two second sensing coils positioned in the other of the proximal and distal portions, one of the three first sensing coils and the two second sensing coils adapted to sense the pressure-data magnetic field and generate signals representative of data relating to pressure exerted on the distal section when engaged with tissue, the other of the three first sensing coils and the two second sensing coils adapted to sense each of the position-data magnetic fields and generate signals representative of data relating to position of the distal section, each of the three first sensing coils being generally parallel with a longitudinal axis of the other of the proximal and distal portion and being located in a first axial section of the other of the proximal and distal portion at different azimuthal angles about the longitudinal axis, and the two second sensing coils being located in a second axial section of the other of the proximal and distal portion at different azimuthal angles about the longitudinal axis;
a first lead serially connecting one of the three first sensing coils and one of the two second sensing coils;
a second lead serially connecting a second one of the three first sensing coils and a second one of the two second sensing coils; and
a third lead connected to a third one of the three first sensing coils.