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

Claim 10:
11. The ablation catheter system of claim 1, wherein the first lumen is configured and arranged to draw a vacuum within the interstitial space and to draw captured cryogenic fluid out of the interstitial space;
the second lumen is configured and arranged to sense a change in vacuum pressure within the interstitial space associated with a flow of cryogenic fluid through the inner balloon; and
a spacer coupled between proximal portions of the inner and outer balloons, the spacer configured and arranged to maintain the interstitial space between the inner and outer balloons in response to a vacuum pressure within the interstitial space, the spacer includes a plurality of channels that extend into an inner diameter of the channel and along a length of the spacer, the plurality of channels are configured and arranged to facilitate the flow of a fluid between the interstitial space, the first lumen, and the second lumen.