US 12,465,268 B2
Guiding sheath with distal tip locator
Debby Highsmith, Laguna Niguel, CA (US); Paul Suarez, La Crescenta, CA (US); Brandon Tran, Madison, WI (US); Tara Gomez-Hampton, Pasadena, CA (US); and Elijah Li, Bronx, NY (US)
Assigned to Biosense Webster (Israel) Ltd., Yokneam (IL)
Filed by Biosense Webster (Israel) Ltd., Yokneam (IL)
Filed on Sep. 24, 2021, as Appl. No. 17/484,729.
Claims priority of provisional application 63/246,623, filed on Sep. 21, 2021.
Claims priority of provisional application 63/090,442, filed on Oct. 12, 2020.
Prior Publication US 2022/0110577 A1, Apr. 14, 2022
Int. Cl. A61B 5/287 (2021.01); A61B 5/00 (2006.01); A61B 5/06 (2006.01); A61B 5/367 (2021.01); A61M 25/09 (2006.01); A61M 39/06 (2006.01)
CPC A61B 5/367 (2021.01) [A61B 5/287 (2021.01); A61B 5/6852 (2013.01); A61B 5/7405 (2013.01); A61B 5/742 (2013.01); A61M 25/09 (2013.01); A61M 39/06 (2013.01); A61B 2562/0223 (2013.01); A61B 2562/0257 (2013.01); A61M 2039/062 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A system comprising:
a guiding sheath assembly, comprising:
an elongated shaft defining a lumen extending along a longitudinal axis;
a control handle proximal of the shaft, the control handle comprising:
a hemostatic valve on a proximal end of the control handle; and
at least one first electrically conducting element disposed on at least one of the control handle and the hemostatic valve;
a catheter comprising a transseptal needle, the catheter including (1) one or more location sensors configured to output a first signal corresponding to a location of a distal end of the transseptal needle within a patient's heart and (2) at least one second electrically conducting element disposed on a proximal end of the catheter such that the at least one first electrically conducting element is configured to interact with the at least one second electrically conducting element to complete an electrical circuit to output a second signal when the catheter is introduced into the lumen of the elongated shaft; and
a mapping system comprising a processor configured to:
receive the first signal from the one or more location sensors corresponding to the location of the distal end of the catheter;
receive the second signal from the completed electrical circuit;
extrapolate the location of a distal end of the guiding sheath assembly based at least in part on the first signal and the second signal; and
determine a distal-most end of the catheter based at least in part on the extrapolated location of the distal end of the guiding sheath assembly.