Deflectable sheath catheters
First Claim
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1. A deflectable sheath catheter, comprising:
- an elongate catheter body having proximal and distal ends;
the catheter body comprising a plurality of flexible segments along its length, at least one of the segments having a different stiffness; and
a deflectable distal end section at the distal end of the catheter body, wherein the segments of different stiffness permit the deflectable distal end section to form a compound curve upon deflection.
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Abstract
The present invention provides devices and methods for the treatment of atrial fibrillation. In one embodiment a deflectable sheath catheter includes an elongate catheter body having proximal and distal ends, the distal end having a distal tip region that includes a plurality of flexible segments with varying degrees of stiffness. A handle portion can be located at the proximal end of the catheter body to provide a steering mechanism that causes the distal tip region to deflect according to a compound curve.
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Citations
30 Claims
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1. A deflectable sheath catheter, comprising:
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an elongate catheter body having proximal and distal ends;
the catheter body comprising a plurality of flexible segments along its length, at least one of the segments having a different stiffness; and
a deflectable distal end section at the distal end of the catheter body, wherein the segments of different stiffness permit the deflectable distal end section to form a compound curve upon deflection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A cardiac ablation instrument assembly, comprising:
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a deflectable sheath catheter adapted for disposition within a heart having at least one lumen therein, the catheter having at least one segment of different stiffness to form a compound curve upon deployment and deflection within the heart; and
an ablation instrument movable within a lumen of the deflectable sheath catheter such that it can be disposed at a target tissue site to deliver ablative energy. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification