US 11,998,310 B2
Medical device with multi-core fiber for optical sensing
Yu Liu, Irvine, CA (US); John W. Sliwa, San Jose, CA (US); Jiayin Liu, Laguna Hills, CA (US); Giovanni Leo, Cologny (CH); and Troy T. Tegg, Elk River, MN (US)
Assigned to St. Jude Medical International Holding S.à r.l., Luxembourg (LU)
Filed by St. Jude Medical International Holding S.à r.l., Luxembourg (LU)
Filed on Aug. 11, 2022, as Appl. No. 17/819,247.
Application 17/819,247 is a continuation of application No. 15/400,655, filed on Jan. 6, 2017, granted, now 11,445,937.
Claims priority of provisional application 62/275,877, filed on Jan. 7, 2016.
Prior Publication US 2023/0031938 A1, Feb. 2, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/06 (2006.01); A61B 5/00 (2006.01); A61B 5/0245 (2006.01); A61B 18/14 (2006.01); A61M 25/01 (2006.01); G01K 11/3206 (2021.01); G01K 13/20 (2021.01); G01L 1/24 (2006.01); A61B 18/00 (2006.01); A61B 34/20 (2016.01); A61B 90/00 (2016.01)
CPC A61B 5/065 (2013.01) [A61B 5/0245 (2013.01); A61B 5/6852 (2013.01); A61B 18/1492 (2013.01); A61M 25/0147 (2013.01); G01K 11/3206 (2013.01); G01K 13/20 (2021.01); G01L 1/246 (2013.01); A61B 2018/00029 (2013.01); A61B 2018/00172 (2013.01); A61B 2018/00351 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/00642 (2013.01); A61B 2018/00791 (2013.01); A61B 2018/00839 (2013.01); A61B 2018/00988 (2013.01); A61B 2018/1465 (2013.01); A61B 2034/2061 (2016.02); A61B 2090/064 (2016.02); A61B 2218/002 (2013.01); A61B 2562/223 (2013.01); A61B 2562/225 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A catheter assembly comprising:
a catheter tip assembly coupled to a distal end of a catheter body, the catheter tip assembly comprising:
a flexing structure configured to bend in response to an external force;
an electrode adjacent the flexing structure, the electrode comprising:
a distal end wall; and
a longitudinally extending inner wall intersecting with the distal end wall,
wherein the distal end wall and the inner wall define a cavity; and
a multi-core fiber comprising a plurality of cores and a distal end, wherein each of the plurality of cores extends from a proximal end to the distal end of the multi-core fiber, wherein at least one of the plurality of cores comprises a fiber Bragg grating and is configured to sense a shape of the flexing structure,
wherein the distal end of the multi-core fiber is disposed within the cavity and is in contact with a surface of the distal end wall of the electrode, and
wherein a distal end of the fiber Bragg grating is disposed within the cavity and is spaced apart from the distal end wall of the electrode.