Systems and methods for making and using medical ablation systems having mapping catheters with improved anchoring ability
First Claim
1. A mapping catheter comprising:
- an elongated body configured and arranged for insertion into patient vasculature, wherein a distal end of the elongated body comprises;
a distal portion comprising a plurality of electrodes;
a proximal portion disposed proximal to the distal portion; and
a reduced-dimension portion disposed between the proximal portion and the distal portion, the reduced-dimension portion having a transverse cross-sectional shape that is rectangular and a cross-sectional dimension that is less than corresponding cross-sectional dimensions of the proximal and distal portions adjacent the reduced-dimension portion;
wherein the distal end is formed, at least in part, from a memory shape material that bends into a preformed shape upon release from a confined space, the preformed shape comprising a first loop formed, at least in part, by the distal portion, wherein the first loop is transverse to a longitudinal axis of the proximal portion,wherein the reduced-dimension portion is configured and arranged to bend such that the reduced-dimension portion advances distally through the first loop when the first loop is held in a fixed position and a force is applied along the longitudinal axis of the proximal portion in a distal direction.
1 Assignment
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Accused Products
Abstract
A mapping catheter includes an elongated body for inserting into patient vasculature. A distal end of the elongated body includes a distal portion that includes a plurality of electrodes, a proximal portion disposed proximal to the distal portion, and a reduced-dimension portion disposed between the proximal and distal portions. The distal end is formed, at least in part, from a memory shape material that bends into a preformed shape upon release from a confined space. The preformed shape includes a first loop formed, at least in part, by the distal portion. The first loop is transverse to a longitudinal axis of the proximal portion. The reduced-dimension portion is configured and arranged to bend such that the reduced-dimension section advances distally through the first loop when the first loop is held in a fixed position and a force is applied distally along the longitudinal axis of the proximal portion.
39 Citations
20 Claims
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1. A mapping catheter comprising:
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an elongated body configured and arranged for insertion into patient vasculature, wherein a distal end of the elongated body comprises; a distal portion comprising a plurality of electrodes; a proximal portion disposed proximal to the distal portion; and a reduced-dimension portion disposed between the proximal portion and the distal portion, the reduced-dimension portion having a transverse cross-sectional shape that is rectangular and a cross-sectional dimension that is less than corresponding cross-sectional dimensions of the proximal and distal portions adjacent the reduced-dimension portion; wherein the distal end is formed, at least in part, from a memory shape material that bends into a preformed shape upon release from a confined space, the preformed shape comprising a first loop formed, at least in part, by the distal portion, wherein the first loop is transverse to a longitudinal axis of the proximal portion, wherein the reduced-dimension portion is configured and arranged to bend such that the reduced-dimension portion advances distally through the first loop when the first loop is held in a fixed position and a force is applied along the longitudinal axis of the proximal portion in a distal direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An ablation system comprising:
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an ablation catheter having a distal portion, a proximal portion, and a longitudinal length, the ablation catheter configured and arranged for insertion into patient vasculature; an expansion element coupled to the distal portion of the ablation catheter, the expansion element configured and arranged for ablating patient tissue; a mapping catheter comprising an elongated body insertable into the ablation catheter, the elongated body comprising a distal end that is extendable from a distal end of the ablation catheter, the distal end of the elongated body comprising; a distal portion comprising a plurality of electrodes, a proximal portion disposed proximal to the distal portion, and a reduced-dimension portion disposed between the proximal portion and the distal portion, the reduced-dimension portion having a transverse cross-sectional shape that is rectangular and a cross-sectional dimension that is less than corresponding cross-sectional dimensions of the proximal and distal portions adjacent the reduced-dimension portion; wherein the distal end is formed, at least in part, from a memory shape material that bends into a preformed shape upon release from a confined space, the preformed shape comprising a first loop formed, at least in part, by the distal portion, wherein the first loop is transverse to a longitudinal axis of the proximal portion, wherein the reduced-dimension portion is configured and arranged to bend such that the reduced-dimension portion advances distally through the first loop when the first loop is held in a fixed position and a force is applied along the longitudinal axis of the proximal portion in a distal direction; and a control module coupled to the ablation catheter and the mapping catheter, the control module configured and arranged for controlling the mapping of electrical activity of the mapping catheter and the ablation of patient tissue by the ablation catheter. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification