US 11,890,044 B2
Pulmonary vein isolation balloon catheter
Troy T. Tegg, Elk River, MN (US); Salo Arias, Brooklyn Park, MN (US); and Derek Sutermeister, Ham Lake, MN (US)
Assigned to ST. JUDE MEDICAL, CARDIOLOGY DIVISION, INC., St. Paul, MN (US)
Appl. No. 16/467,343
Filed by ST. JUDE MEDICAL, CARDIOLOGY DIVISION, INC., St. Paul, MN (US)
PCT Filed Dec. 5, 2017, PCT No. PCT/US2017/064713
§ 371(c)(1), (2) Date Jun. 6, 2019,
PCT Pub. No. WO2018/106688, PCT Pub. Date Jun. 14, 2018.
Claims priority of provisional application 62/578,352, filed on Oct. 27, 2017.
Claims priority of provisional application 62/432,065, filed on Dec. 9, 2016.
Prior Publication US 2020/0085484 A1, Mar. 19, 2020
Int. Cl. A61B 18/14 (2006.01); A61B 18/02 (2006.01); A61B 90/00 (2016.01); A61B 18/00 (2006.01); A61M 25/01 (2006.01)
CPC A61B 18/02 (2013.01) [A61B 18/1492 (2013.01); A61B 2018/00166 (2013.01); A61B 2018/00255 (2013.01); A61B 2018/00351 (2013.01); A61B 2018/00375 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/00791 (2013.01); A61B 2018/00946 (2013.01); A61B 2018/00994 (2013.01); A61B 2018/0212 (2013.01); A61B 2018/0262 (2013.01); A61B 2090/064 (2016.02); A61B 2090/065 (2016.02); A61B 2218/002 (2013.01); A61B 2218/007 (2013.01); A61M 25/0116 (2013.01); A61M 25/0127 (2013.01); A61M 25/0136 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An ablation catheter system comprising:
a catheter shaft including proximal and distal ends;
a dual cryogenic ablation balloon coupled to the distal end of the catheter shaft, the dual cryogenic ablation balloon including an inner and an outer balloon;
an interstitial space between the inner and outer balloons configured and arranged to capture cryogenic fluid that escapes from an internal cavity of the inner balloon;
a manifold configured and arranged to deliver cryogenic fluid to the internal cavity of the inner balloon;
a first and second lumen in fluid communication with the interstitial space; and
an adaptor that mechanically couples the inner and outer balloons to the catheter shaft, and radially and longitudinally offsets proximal portions of the inner and outer balloons, wherein the adaptor is circumferentially positioned within the catheter shaft; and
a spacer coupled between proximal portions of the inner and outer balloons, at least a portion of the spacer surrounding the adapter.