US 12,115,027 B2
Esophageal heat transfer devices and methods for cardiac tissue ablation
Erik Kulstad, Chicago, IL (US); and Jay D. Schieber, Chicago, IL (US)
Assigned to Advanced Cooling Therapy, Inc., Chicago, IL (US)
Appl. No. 17/044,907
Filed by Advanced Cooling Therapy, Inc., Chicago, IL (US)
PCT Filed Apr. 3, 2019, PCT No. PCT/US2019/025475
§ 371(c)(1), (2) Date Oct. 2, 2020,
PCT Pub. No. WO2019/195354, PCT Pub. Date Oct. 10, 2019.
Claims priority of provisional application 62/795,916, filed on Jan. 23, 2019.
Claims priority of provisional application 62/793,998, filed on Jan. 18, 2019.
Claims priority of provisional application 62/739,595, filed on Oct. 1, 2018.
Claims priority of provisional application 62/652,641, filed on Apr. 4, 2018.
Prior Publication US 2021/0145534 A1, May 20, 2021
Int. Cl. A61B 34/20 (2016.01); A61B 18/14 (2006.01); A61B 90/00 (2016.01); A61B 18/00 (2006.01); A61B 18/02 (2006.01)
CPC A61B 90/04 (2016.02) [A61B 18/1492 (2013.01); A61B 34/20 (2016.02); A61B 2018/00023 (2013.01); A61B 2018/0022 (2013.01); A61B 2018/00351 (2013.01); A61B 2018/00488 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/00714 (2013.01); A61B 2018/00744 (2013.01); A61B 2018/00791 (2013.01); A61B 2018/00982 (2013.01); A61B 2018/0212 (2013.01); A61B 2034/2051 (2016.02); A61B 2034/2063 (2016.02); A61B 2090/0418 (2016.02); A61B 2090/0463 (2016.02); A61B 2090/0481 (2016.02); A61B 2090/065 (2016.02)] 15 Claims
OG exemplary drawing
 
1. A method for achieving a durable atrial lesion and preventing or reducing the risk of thermal injury to esophageal tissue in a patient undergoing a cardiac tissue ablation procedure, the method comprising:
orally or nasally inserting an esophageal heat transfer device into the patient, wherein the heat transfer device includes a heat transfer region and one or more lumens configured to provide a heat transfer fluid to the heat transfer region and to remove the heat transfer fluid from the heat transfer region;
positioning the heat transfer region in thermal contact with esophageal tissue susceptible to damage during the cardiac tissue ablation procedure;
selecting a temperature setting for the heat transfer fluid, wherein the temperature setting is from about 0° C. to about 10° C.;
circulating the heat transfer fluid through the one or more lumens at the selected temperature setting to maintain a target temperature of the esophageal tissue susceptible to damage; and
performing the cardiac tissue ablation procedure;
wherein the method achieves a durable atrial lesion while simultaneously protecting esophageal tissue during the cardiac tissue ablation procedure.