METHOD AND DEVICES FOR COAGULATION OF TISSUE
First Claim
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1. A method of coagulating cardiac tissue, where the cardiac tissue comprises a first cardiac surface and a second cardiac surface, where the second cardiac surface is on an opposite side of the cardiac tissue from the first cardiac surface, the method comprising:
- positioning a first coagulation device adjacent to the first cardiac surface;
forming a first coagulation lesion along the first cardiac surface using the coagulation device such that the first coagulation lesion forms an electrical barrier that prevents an electrical impulse from propagating in cardiac tissue across the first coagulation lesion;
positioning a second device having at least one electromagnetic energy source adjacent to the second cardiac surface;
applying electromagnetic energy adjacent to the second cardiac surface using the electromagnetic energy source;
identifying a location of the electromagnetic energy through the cardiac tissue from the first cardiac surface to locate the second device; and
repositioning the second device at a target location on the second cardiac surface in response to the location of the first coagulation lesion.
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Abstract
Methods and devices described herein facilitate improved treatment of body organs.
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Citations
24 Claims
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1. A method of coagulating cardiac tissue, where the cardiac tissue comprises a first cardiac surface and a second cardiac surface, where the second cardiac surface is on an opposite side of the cardiac tissue from the first cardiac surface, the method comprising:
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positioning a first coagulation device adjacent to the first cardiac surface; forming a first coagulation lesion along the first cardiac surface using the coagulation device such that the first coagulation lesion forms an electrical barrier that prevents an electrical impulse from propagating in cardiac tissue across the first coagulation lesion; positioning a second device having at least one electromagnetic energy source adjacent to the second cardiac surface; applying electromagnetic energy adjacent to the second cardiac surface using the electromagnetic energy source; identifying a location of the electromagnetic energy through the cardiac tissue from the first cardiac surface to locate the second device; and repositioning the second device at a target location on the second cardiac surface in response to the location of the first coagulation lesion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A tissue coagulation device comprising:
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a shaft having at least one coagulation element at a distal portion, where the coagulation element is coupleable to a coagulation power supply; and an illumination source located on an exterior surface of the distal portion of the shaft and coupleable to an illumination power supply. - View Dependent Claims (19, 20, 21, 22)
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23. A method of forming a contiguous coagulation lesion in a tissue of a heart on multiple but opposite atrial surfaces, the method comprising:
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positioning a first coagulation device adjacent to an endocardial surface of the tissue; forming an endocardial coagulation lesion with the first coagulation device; determining a location on the epicardial surface of the tissue that corresponds to an end of the endocardial coagulation lesion formed on the endocardial surface; positioning a second coagulation device at or near the location on the epicardial surface such that creating an epicardial coagulation lesion on the epicardial surface causes the lesions to overlap, intersect, and/or join to form the contiguous coagulation lesion such that an electrical impulse is prevented from flowing in the across the contiguous coagulation lesion.
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24. A method of creating a cardiac coagulation pattern in cardiac tissue using a minimally invasive surgical technique, the method comprising:
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positioning a first coagulation device adjacent to a first cardiac surface; partially forming the cardiac coagulation pattern by applying energy to the first coagulation device to create at least a first plurality of coagulation lesions along the first cardiac surface, where the first plurality of coagulation lesions includes at least two spaced lesions to define a gap section of tissue such that an electrical impulse is able to flow between the two spaced lesions through the gap section of tissue; positioning a second coagulation device adjacent to a second cardiac surface, where the second cardiac surface is on an opposite side of the first cardiac surface; and fully forming the cardiac coagulation pattern by applying energy to the second coagulation device to create at least one bridging coagulation lesion to span the gap section of tissue along the second cardiac surface, where the bridging coagulation lesion prevents an electrical impulse from flowing across the gap section of tissue.
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Specification