US 12,268,439 B2
Intra-cardiac mapping and ablating
Daniel Robert Weinkam, Coquitlam (CA); and Jeffery Charles Brewster, Burnaby (CA)
Assigned to KARDIUM INC., Burnaby (CA)
Filed by Kardium Inc., Burnaby (CA)
Filed on May 8, 2023, as Appl. No. 18/313,444.
Application 17/140,522 is a division of application No. 16/380,325, filed on Apr. 10, 2019, granted, now 10,918,438, issued on Feb. 16, 2021.
Application 15/007,594 is a division of application No. 13/596,774, filed on Aug. 28, 2012, granted, now 9,277,960, issued on Mar. 8, 2016.
Application 18/313,444 is a continuation of application No. 17/140,522, filed on Jan. 4, 2021, granted, now 11,678,933.
Application 16/380,325 is a continuation of application No. 15/007,594, filed on Jan. 27, 2016, granted, now 10,350,003, issued on Jul. 16, 2019.
Claims priority of provisional application 61/532,423, filed on Sep. 8, 2011.
Prior Publication US 2023/0270493 A1, Aug. 31, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/01 (2006.01); A61B 5/00 (2006.01); A61B 5/027 (2006.01); A61B 5/06 (2006.01); A61B 18/12 (2006.01); A61B 18/14 (2006.01); A61B 17/00 (2006.01); A61B 18/00 (2006.01)
CPC A61B 18/1492 (2013.01) [A61B 5/01 (2013.01); A61B 5/027 (2013.01); A61B 5/06 (2013.01); A61B 5/065 (2013.01); A61B 5/6858 (2013.01); A61B 18/1206 (2013.01); A61B 2017/00154 (2013.01); A61B 2017/00199 (2013.01); A61B 2018/0016 (2013.01); A61B 2018/00267 (2013.01); A61B 2018/00357 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/00648 (2013.01); A61B 2018/00797 (2013.01); A61B 2018/00815 (2013.01); A61B 2018/00863 (2013.01); A61B 2018/1467 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A medical system, comprising:
a structure;
one or more transducer elements carried by the structure, the structure and the one or more transducer elements sized to be received within an intra-cardiac cavity, the intra-cardiac cavity defined at least in part by a tissue wall, wherein an interior surface of the tissue wall is interrupted by one or more ports positioned in fluid communication with the intra-cardiac cavity;
a signal source configured to provide a respective duty cycled input signal to each of the one or more transducer elements;
a sensing system configured to, while sensing temperature at least proximate to each of the one or more transducer elements, provide a respective set of one or more response signals for each of the one or more transducer elements, each set of one or more response signals responsive to temperature change at least proximate to a respective one of the one or more transducer elements; and
a controller configured to derive at least one signal from each set of one or more response signals responsive to temperature change and to produce a map of at least a portion of the interior surface of the tissue wall of the intra-cardiac cavity at least by determining information specifying a location of each of one or more regions of the interior surface of the tissue wall and a location of each of at least one of the one or more ports on the interior surface of the tissue wall with respect to the one or more regions based at least on each derived at least one signal and each respective duty cycled input signal, and
wherein each respective duty cycled input signal repetitively applies and ceases to apply energy to a respective transducer element of the one or more transducer elements.