Patent ID: 11877793
Assignee: BOSTON SCIENTIFIC SCIMED, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A medical device, comprising:
a device shaft, including a distal end and a device shaft lumen;
an electrode shaft configured to deliver energy to a treatment site and including an electrode shaft lumen configured to deliver fluid to the treatment site, wherein the electrode shaft is coupled to and longitudinally movable relative to the device shaft, and wherein the electrode shaft lumen is fluidly connected to the device shaft lumen;
an insulation tip coupled to a distal tip of the electrode shaft; and
an end cap at the distal end of the device shaft,
wherein the insulation tip includes an insulation tip lumen fluidly connected to the electrode shaft lumen and configured to deliver fluid to the treatment site,
wherein the insulation tip covers an entirety of the distal tip of the electrode shaft,
wherein the end cap includes a central opening through which the electrode shaft is movable, and wherein the end cap includes a stop surface,
wherein the electrode shaft includes a first longitudinal portion, a second longitudinal portion proximal of the first longitudinal portion, and a transition portion between the first longitudinal portion and the second longitudinal portion, and wherein the transition portion is configured to engage with the stop surface of the end cap to limit a distal extension of the electrode shaft, and
wherein the first longitudinal portion includes a cross-sectional width less than a cross-sectional width of the second longitudinal portion.