Patent ID: 11890044
Assignee: ST. JUDE MEDICAL, CARDIOLOGY DIVISION, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
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.