Flexible expandable electrode and method of intraluminal delivery of pulsed power
First Claim
1. An electrical ablation device, comprising:
- an elongate member;
a first electrode disposed along the elongate member and extending along an axis, the first electrode having a proximal end configured to couple to an energy source and a surface configured to couple to a tissue treatment region and apply ablative energy; and
a first expandable portion having a proximal end and a distal end and extending along the axis, the first expandable portion defining a first perimeter of the first electrode and having an associated first diameter with respect to the axis, wherein the first expandable portion comprises a first framework comprising a framework member, wherein the framework member comprises a helix extending along the first expandable portion, wherein a distal end of the framework member is configured to deliver electric current,wherein the first framework is selectively expandable to transition the first expandable portion from a contracted state to an expanded state, and the first framework is selectively contractible to transition the first expandable portion from the expanded state to the contracted state,wherein, when the first framework is expanded, the first diameter is expanded and the first expandable portion is transitioned from the contracted state to the expanded state,wherein, when the first framework is contracted, the first diameter is contracted and the first expandable portion is transitioned from the expanded state to the contracted state,wherein a relative rotation between a proximal portion and a distal portion of the framework member transitions the first expandable portion between the contracted state and the expanded state, andwherein the relative rotation between the proximal portion and the distal portion of the framework member comprises a counter rotation of the distal portion of the framework member relative to the proximal portion of the framework member.
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Accused Products
Abstract
A surgical instrument, such as an electrical ablation device, includes an elongate member having therealong disposed a first electrode extending along an axis. A first expandable portion extends along the axis and defines a first perimeter of the first electrode and has an associated first diameter with respect to the axis. The first expandable portion includes a first framework selectively expandable to transition the first expandable portion from a contracted state to an expanded state. The first framework is selectively contractible to transition the first expandable portion from the expanded state to the contracted state. When the first framework is expanded, the first diameter is expanded and the first expandable portion is transitioned from the contracted state to the expanded state. When the first framework is contracted, the first diameter is contracted and the first expandable portion is transitioned from the expanded state to the contracted state.
1906 Citations
15 Claims
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1. An electrical ablation device, comprising:
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an elongate member; a first electrode disposed along the elongate member and extending along an axis, the first electrode having a proximal end configured to couple to an energy source and a surface configured to couple to a tissue treatment region and apply ablative energy; and a first expandable portion having a proximal end and a distal end and extending along the axis, the first expandable portion defining a first perimeter of the first electrode and having an associated first diameter with respect to the axis, wherein the first expandable portion comprises a first framework comprising a framework member, wherein the framework member comprises a helix extending along the first expandable portion, wherein a distal end of the framework member is configured to deliver electric current, wherein the first framework is selectively expandable to transition the first expandable portion from a contracted state to an expanded state, and the first framework is selectively contractible to transition the first expandable portion from the expanded state to the contracted state, wherein, when the first framework is expanded, the first diameter is expanded and the first expandable portion is transitioned from the contracted state to the expanded state, wherein, when the first framework is contracted, the first diameter is contracted and the first expandable portion is transitioned from the expanded state to the contracted state, wherein a relative rotation between a proximal portion and a distal portion of the framework member transitions the first expandable portion between the contracted state and the expanded state, and wherein the relative rotation between the proximal portion and the distal portion of the framework member comprises a counter rotation of the distal portion of the framework member relative to the proximal portion of the framework member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An electrical ablation device, comprising:
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an elongate member; a first electrode disposed along the elongate member and extending along an axis, the first electrode having a proximal end configured to wirelessly couple to an energy source and a surface configured to couple to a tissue treatment region and apply ablative energy; and a first expandable portion having a proximal end and a distal end and extending along the axis, the first expandable portion defining a first perimeter of the first electrode and having an associated first diameter with respect to the axis, wherein the first expandable portion comprises a first framework comprising a framework member, wherein the framework member comprises a helix extending along the first expandable portion, wherein a distal end of the framework member is configured to deliver electric current, wherein the first framework is selectively expandable to transition the first expandable portion from a contracted state to an expanded state, and the first framework is selectively contractible to transition the first expandable portion from the expanded state to the contracted state, wherein a relative rotation between a proximal portion and a distal portion of the framework member transitions the first expandable portion between the contracted state and the expanded state, and wherein the relative rotation between the proximal portion and the distal portion of the framework member comprises a counter rotation of the distal portion of the framework member relative to the proximal portion of the framework member.
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15. An electrical ablation device, comprising:
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an elongate member; an electrode disposed along the elongate member and extending along an axis, the electrode having a proximal end configured to couple to an energy source and a surface configured to couple to a tissue treatment region and apply ablative energy; and an expandable portion comprising a proximal end and a distal end and extending along the axis, the expandable portion defining a perimeter of the electrode and having an associated diameter with respect to the axis, wherein the expandable portion comprises a framework comprising a framework member, wherein the framework member comprises a helix extending along the expandable portion, wherein the framework is selectively expandable to transition the expandable portion from a contracted state to an expanded state, and the framework is selectively contractible to transition the expandable portion from the expanded state to the contracted state, wherein a relative rotation between a proximal portion and a distal portion of the framework member transitions the expandable portion between the contracted state and the expanded state, and wherein the relative rotation between the proximal portion and the distal portion of the framework member comprises a counter rotation of the distal portion of the framework member relative to the proximal portion of the framework member.
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Specification