US 11,986,231 B2
Multi-lobe balloon for cryoablation
Rahmani Sara, Montreal (CA); and Lies Safar Remali, Pointe-Claire (CA)
Assigned to Medtronic CryoCath LP, Toronto (CA)
Filed by Medtronic CryoCath LP, Toronto (CA)
Filed on May 20, 2021, as Appl. No. 17/325,307.
Application 17/325,307 is a continuation of application No. 16/368,277, filed on Mar. 28, 2019, granted, now 11,045,245.
Application 16/368,277 is a continuation of application No. 15/988,431, filed on May 24, 2018, granted, now 10,299,848, issued on May 28, 2019.
Application 15/988,431 is a continuation of application No. 14/944,870, filed on Nov. 18, 2015, granted, now 10,058,371, issued on Aug. 28, 2018.
Prior Publication US 2021/0267658 A1, Sep. 2, 2021
Int. Cl. A61B 18/02 (2006.01); A61B 17/00 (2006.01); A61B 18/00 (2006.01)
CPC A61B 18/02 (2013.01) [A61B 2017/00561 (2013.01); A61B 2017/00955 (2013.01); A61B 2018/0022 (2013.01); A61B 2018/0025 (2013.01); A61B 2018/00351 (2013.01); A61B 2018/00375 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/00714 (2013.01); A61B 2018/00797 (2013.01); A61B 2018/00863 (2013.01); A61B 2018/00875 (2013.01); A61B 2018/0212 (2013.01); A61B 2018/0262 (2013.01); A61B 2018/0268 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A cryotreatment catheter, comprising:
an elongate body having an outer elongate body and an inner elongate body, the outer elongate body defining a first lumen and the inner elongate body defining a second lumen, the inner elongate body being movable relative to the outer elongate body within the first lumen;
a first plurality of apertures on the outer elongate body and a second plurality of apertures on the inner elongate body;
an inner expandable treatment element coupled to the outer elongate body, the inner expandable treatment element having a plurality of lobes radially arranged around the outer elongate body, the first plurality of apertures on the outer elongate body and the second plurality of apertures on the inner elongate body corresponding to one of the plurality of lobes; and
an outer expandable treatment element that surrounds the plurality of lobes radially arranged around the outer elongate body;
wherein each of the plurality of lobes includes a first planar lateral surface, a second opposite planar lateral surface, and a curved tissue contact surface extending between the first planar lateral surface and the second planar lateral surface, wherein the first planar lateral surface and the second planar lateral surface extend at a non-zero angle relative to one another.