US 12,251,158 B2
Tissue ablation using a medical device
Timothy A. Ostroot, Cokato, MN (US); and John A. Zanussi, Minneapolis, MN (US)
Assigned to BOSTON SCIENTIFIC SCIMED, INC., Maple Grove, MN (US)
Filed by BOSTON SCIENTIFIC SCIMED, INC., Maple Grove, MN (US)
Filed on Jun. 26, 2020, as Appl. No. 16/913,804.
Claims priority of provisional application 62/868,620, filed on Jun. 28, 2019.
Prior Publication US 2020/0405386 A1, Dec. 31, 2020
Int. Cl. A61B 18/14 (2006.01); A61B 18/00 (2006.01); A61B 18/12 (2006.01)
CPC A61B 18/1492 (2013.01) [A61B 2018/0016 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/126 (2013.01); A61B 2018/1467 (2013.01); A61B 2018/1475 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A medical device, comprising:
a catheter shaft including a distal end portion, wherein the distal end portion includes an ablation assembly, the ablation assembly including:
an expandable frame comprising a unitary structure that includes a non-expandable base having a length and an expandable end region, the unitary structure of the expandable frame being defined by a plurality of interconnected struts that extend along the length of the non-expandable base and along the expandable end region, the plurality of interconnected struts defining a plurality of apertures along the expandable frame;
wherein along the non-expandable base, the plurality of interconnected struts include a first strut and a second strut, wherein a portion of the first strut extends laterally and connects with the second strut; and
an electrical circuit coupled to an inner surface of the expandable end region of the expandable frame, the electrical circuit including a plurality of ablation electrodes coupled thereto;
wherein the expandable end region of the expandable frame is designed to shift from a delivery configuration in which the plurality of ablation electrodes face inward from the inner surface of the expandable frame to an expanded configuration in which the plurality of ablation electrodes are disposed along a substantially planar region of the expandable frame, face away from the non-expandable base of the expandable frame and are configured to contact a target tissue.