Phototherapeutic waveguide apparatus
First Claim
Patent Images
1. A method of treating a cardiac condition comprising,introducing a photoablation instrument into the heart, the instrument having an optical assembly for projecting a beam of radiation;
- positioning the photoablation instrument in a location within the heart where light from the optical assembly can be projected onto an inner surface of the heart; and
exposing a region of the heart to projected radiation the optical assembly.
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Abstract
Methods and apparatus are disclosed for forming annular lesions in tissue. The methods include introduction of an optical apparatus proximate to a tissue site, via, for example, a catheter. The optical apparatus includes a pattern-forming optical waveguide in communication with a light transmitting optical fiber. Energy is transmitted through the optical fiber, such that radiation is propagated through the optical fiber and the waveguide projects an annular light pattern, e.g., a circle or a halo.
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Citations
29 Claims
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1. A method of treating a cardiac condition comprising,
introducing a photoablation instrument into the heart, the instrument having an optical assembly for projecting a beam of radiation; -
positioning the photoablation instrument in a location within the heart where light from the optical assembly can be projected onto an inner surface of the heart; and
exposing a region of the heart to projected radiation the optical assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of treating atrial arrhythmia comprising:
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introducing a photoablation instrument into an atrium, the instrument having an optical assembly for projecting an annular beam of radiation;
positioning the photoablation instrument in a location within the atrium where light from the optical assembly can be projected onto an inner surface of the atrium; and
exposing a region of atrial tissue to an annulus of projected radiation from the optical assembly, thereby forming an annular lesion. - View Dependent Claims (11, 12)
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13. A method of treating atrial arrhythmia comprising:
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introducing a photoablation instrument into an atrium, the instrument having an optical assembly for projecting a beam of radiation;
positioning the photoablation instrument in a location within the atrium where light from the optical assembly can be projected onto an inner surface of the atrium; and
exposing a region of atrial tissue surrounding a pulmonary vein to projected radiation from the optical assembly at a wavelength ranging from about 805 nm to about 1060 nm. - View Dependent Claims (14, 15, 16)
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17. A method of treating atrial arrhythmia comprising:
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introducing a photoablation instrument into an atrium, the instrument having an optical assembly and an expandable balloon element adapted to surround the optical assembly upon inflation;
inflating the balloon element with an inflation fluid, such that the inflated balloon provides a transmission pathway for radiation between the optical assembly and an inner surface of the atrium; and
exposing a region of atrial tissue surrounding a pulmonary vein projected radiation from the optical assembly. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification