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US 12,622,738 B2Granted
Medical devices and related methods
AssigneeBoston Scientific Scimed, Inc.
InventorsDaniel J. Foster, Matthew P. Jones, Allyn N. Jensrud, John Kummailil
Life of this patent
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Abstract
A medical device includes an electrode shaft and a tip. The electrode shaft is configured to deliver energy to a target site and includes an electrode shaft lumen configured to deliver fluid to the target site. The tip is coupled to a distal tip of the electrode shaft. The tip includes an inner portion of conductive material and an exterior layer of insulative material. The tip includes a tip lumen fluidly connected to the electrode shaft lumen and configured to deliver fluid to the target site.
Claims19
A medical device, comprising:
- a shaft including a shaft lumen configured to direct a flow of fluid through the shaft;
- an electrode shaft configured to deliver energy to a target site and including:
- an electrode shaft lumen configured to deliver fluid from the shaft lumen to the target site;
- and
- a distal end including a widened portion that extends radially outward relative to a longitudinal axis of the electrode shaft;
- and
- a tip coupled to the distal end of the electrode shaft, the tip including:
- two half portions that each include at least one groove on a radially inner face,
- wherein each groove is configured to receive at least a portion of the widened portion of the distal end of the electrode shaft,
- wherein each groove extends radially outward relative to the longitudinal axis of the electrode shaft, and
- wherein each half portion includes at least an exterior layer of insulative material;
- and
- an electrode plate on a proximal end of the tip, wherein the electrode plate is a separate component from the electrode shaft and the tip, and wherein the electrode plate is coupled to the proximal end of the tip,
- wherein the insulative material of the tip encapsulates an entire distal end of conductive material of the distal end of the electrode shaft,
- wherein the tip includes a tip lumen fluidly connected to the electrode shaft lumen and configured to deliver fluid to the target site, wherein the tip lumen and the electrode shaft lumen are longitudinally aligned and fluidically connected, and wherein a distal end portion of the tip lumen includes a widened chamfer to disperse fluid delivered to a target site, and
- wherein the electrode shaft and the tip with the exterior layer of insulative material are longitudinally movable together relative a distal end of the shaft.
13 more elements
A medical device, comprising:
- a handle including a fluid port and an energy receiving hub;
- a shaft including a shaft lumen configured to direct a flow of fluid through the shaft from the fluid port;
- a conductive element electrically connected to the energy receiving hub and passing through at least a portion of the handle and/or the shaft;
- and
- an electrode coupled to a distal end of the shaft, wherein the electrode includes an electrode shaft and a tip extending distally from and fixedly coupled to the electrode shaft, and wherein the tip includes an inner portion of conductive material and an exterior layer of an insulative material,
- wherein the insulative material encapsulates an entire distal end of the conductive material,
- wherein the electrode shaft is electrically connected to the conductive element and includes an electrode shaft lumen fluidly connected to the shaft lumen, and
- wherein the tip includes a tip lumen extending through the exterior layer of insulative material, and wherein the tip lumen is fluidly connected to the electrode shaft lumen and configured to deliver fluid from a distal end of the electrode;
- wherein the electrode shaft and the tip are extendable and retractable together relative to the shaft;
- wherein the insulative material includes (i) a first half portion including a first portion of the tip lumen, and (ii) a second half portion including a second portion of the tip lumen, and wherein the first half portion and the second half portion are separate components that are coupled together to encapsulate the entire distal end of the conductive material and to form the tip lumen;
- and
- wherein the distal end of the electrode shaft or the conductive material of the tip includes a widened end portion, wherein the widened end portion extends radially outward relative to a longitudinal axis of the electrode shaft, wherein the first half portion and the second half portion of the tip each includes a groove on a radially inner face, wherein each groove is configured to receive at least a portion of the widened end portion, and wherein each groove extends radially outward relative to the longitudinal axis of the electrode shaft.
9 more elements
A medical device, comprising:
- an electrode shaft including an electrode shaft lumen configured to receive fluid, wherein a distal end of the electrode shaft includes a widened end portion, wherein the widened end portion extends radially outward relative to a longitudinal axis of the electrode shaft;
- and
- a tip fixedly coupled to a distal tip of the electrode shaft and including insulative material, wherein the insulative material of the tip includes a first tip half portion and a second tip half portion, and wherein the first tip half portion is a separate component from the second tip half portion, and wherein the first tip half portion is welded to the second tip half portion with the electrode shaft positioned between the first tip half portion and the second tip half portion,
- wherein the insulative material insulates at least a distal portion of the medical device, including insulating at least an entirety of the distal tip of the electrode shaft,
- wherein the tip includes a tip lumen fluidly connected to the electrode shaft lumen to form a channel, wherein the tip lumen extends through insulative material formed by the first tip half portion and the second tip half portion, and wherein a distal end portion of the tip lumen includes a widened chamfer to disperse fluid delivered to a target site,
- wherein the channel extends through the electrode shaft and the tip along a longitudinal axis of the medical device, and
- wherein the insulative material of the tip includes a groove on a radially inner face in each of the first tip half portion and the second tip half portion, wherein each groove extends radially outward relative to the longitudinal axis of the electrode shaft, and wherein each groove is configured to receive a portion of the widened end portion when the first tip half portion of insulative material and the second tip half portion of insulative material are welded together.
4 more elements
Dependencies are inferred from the claim text.