Sheath and method of use
First Claim
Patent Images
1. A method comprising:
- providing a sheath having first and second lumens and first and second fenestrations, wherein the first and second fenestrations are included entirely between, but separate from, proximal and distal ends of the sheath;
deploying a catheter within the first lumen;
applying negative pressure to the first fenestration but not the second fenestration;
applying negative pressure to the second fenestration but not the first fenestration;
ablating patient tissue with the catheter; and
removing patient fluid via the second lumen while the catheter is deployed within the first lumen.
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Abstract
In an embodiment a sheath allows one to simultaneously ablate tissue, using a catheter located in the sheath, and remove fluid from a patient'"'"'s pericardial space, via the same sheath, all without withdrawing the ablation catheter from the sheath. Applying pressure (positive or negative) to fenestrations in the sheath may allow one to withdraw fluid from the space, navigate the sheath within the space, and/or adhere the sheath to tissue in the space. Other embodiments are described herein.
14 Citations
18 Claims
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1. A method comprising:
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providing a sheath having first and second lumens and first and second fenestrations, wherein the first and second fenestrations are included entirely between, but separate from, proximal and distal ends of the sheath; deploying a catheter within the first lumen; applying negative pressure to the first fenestration but not the second fenestration; applying negative pressure to the second fenestration but not the first fenestration; ablating patient tissue with the catheter; and removing patient fluid via the second lumen while the catheter is deployed within the first lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method comprising:
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providing a sheath having first and second lumens; deploying a catheter within the first lumen but not the second lumen; stabilizing the sheath against patient tissue by applying negative pressure to a fenestration included in a lateral wall of the sheath; ablating the patient tissue with the catheter emerging from a distal end portion of the sheath; and removing patient fluid via the second lumen while the catheter is deployed within the first lumen. - View Dependent Claims (15, 16, 17, 18)
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Specification