Circumferential ablation device assembly with an expandable member
First Claim
1. An ablation device assembly for ablating a circumferential region of tissue at a location within a body space where a pulmonary vein extends from an atrium, comprising:
- an elongate body with a proximal end portion, a distal end portion, and a longitudinal axis;
a contact member located along the distal end portion, the contact member having a circumferential wall and being expandable from a radially collapsed condition to a radially expanded condition, the contact member including a single chamber having first and second bulbous sections separated by a longitudinal mid-section, wherein the first bulbous section has a smaller outside diameter than the second bulbous section in the expanded condition; and
an ablation element having an ablative energy source that is located along the distal end portion, wherein the ablation element cooperates with the contact member such that the ablative energy source emits a substantially circumferential pattern of energy through the circumferential wall.
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Accused Products
Abstract
The present invention involves a surgical device and method of use, particularly an assembly and method incorporating a peanut or barbell shaped expandable member along the distal region of an ablation device to facilitate ablation of a circumferential region of tissue engaged by the expandable member. The ablation device assembly includes an elongate body with a proximal end portion, a distal end portion, and a longitudinal axis. A contact member is located along the distal end portion of the elongate body. The contact member has a circumferential wall and is expandable from a radially collapsed condition to a radially expanded condition. The contact member also includes a single chamber having first and second bulbous sections separated by a longitudinal mid-section, wherein the first bulbous section has a smaller outside diameter than the second bulbous section when the contact member is in the expanded condition. The ablation device also has an ablation element having an ablative energy source that is located along the distal end portion, wherein the ablation element cooperates with the contact member such that the ablative energy source emits a substantially circumferential pattern of energy through the circumferential wall.
114 Citations
26 Claims
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1. An ablation device assembly for ablating a circumferential region of tissue at a location within a body space where a pulmonary vein extends from an atrium, comprising:
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an elongate body with a proximal end portion, a distal end portion, and a longitudinal axis;
a contact member located along the distal end portion, the contact member having a circumferential wall and being expandable from a radially collapsed condition to a radially expanded condition, the contact member including a single chamber having first and second bulbous sections separated by a longitudinal mid-section, wherein the first bulbous section has a smaller outside diameter than the second bulbous section in the expanded condition; and
an ablation element having an ablative energy source that is located along the distal end portion, wherein the ablation element cooperates with the contact member such that the ablative energy source emits a substantially circumferential pattern of energy through the circumferential wall. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A tissue ablation device assembly for ablating a circumferential region of tissue at a location where a pulmonary vein extends from an atrium, comprising:
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a circumferential ablation member with an ablation element which is adapted to ablatively couple to the circumferential region of tissue, the circumferential ablation member being adjustable from a first condition to a second condition, and including a single chamber having first and second bulbous sections separated by a longitudinal mid-section, wherein the first bulbous section has a smaller outside diameter than the second bulbous section when the circumferential ablation member is in the second condition; and
a steerable delivery member with a proximal end portion and a distal end portion that is deflectable and steerable by rotating the proximal end portion such that the distal end portion may be positioned along the location, wherein the circumferential ablation member is adapted to couple to the distal end portion of the steerable delivery member and to be delivered to the location by the steerable delivery member when the circumferential ablation member is in the first condition.
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24. An expandable member for use in an ablation device, the expandable member including a single chamber comprising first and second bulbous sections separated by a longitudinal mid-section, and being expandable from a radially collapsed condition to a radially expanded condition, wherein the first bulbous section has a smaller outside diameter than the second bulbous section in the expanded condition.
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25. An expandable member for use in an ablation device, the expandable member including a single chamber comprising first and second bulbous sections separated by a longitudinal mid-section, and being expandable from a radially collapsed condition to a radially expanded condition, wherein the first bulbous section has a smaller wall thickness than the second bulbous section in the radially collapsed condition.
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26. An expandable member for use in an ablation device, the expandable member including a single chamber comprising first and second bulbous sections separated by a longitudinal mid-section, and being expandable from a radially collapsed condition to a radially expanded condition by introduction of an inflation media, wherein the expandable member is constructed such that the first bulbous section will commence expansion prior to the expansion of the second bulbous section when the inflation media is introduced into the expandable member.
Specification