ESTIMATING APPARATUS AND ESTIMATING METHOD
First Claim
1. An estimating apparatus for irradiating a tissue having absorbed photo-sensitive pharmaceutical, the photo-sensitive pharmaceutical absorbing an excitation light and emitting fluorescence, with the excitation light emitted from a tip portion of a laser catheter, comprising:
- a connector to/from which the laser catheter is capable of being attached/detached;
a light source for outputting the excitation light to the laser catheter via the connector; and
a detection unit for detecting intensity of the fluorescence, the fluorescence being entered from the laser catheter via the connector, to estimate whether the tissue has changed because of reaction between the excitation light emitted from the tip portion of the laser catheter and the photo-sensitive pharmaceutical absorbed in the tissue.
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Accused Products
Abstract
A photodynamic therapy apparatus as an estimating apparatus is an apparatus for irradiating a tissue having absorbed photo-sensitive pharmaceutical, the photo-sensitive pharmaceutical absorbing an excitation light and emitting fluorescence, with the excitation light emitted from a tip portion of a laser the catheter, including a connector, a light source, and a light detection unit. The laser the catheter is capable of being attached/detached to/from the connector. The light source outputs the excitation light to the laser the catheter via the connector. The light detection unit detects intensity or a spectrum of the fluorescence, the fluorescence being entered from the laser the catheter via the connector, to estimate whether the tissue has changed because of reaction between the excitation light emitted from the tip portion of the laser the catheter and the photo-sensitive pharmaceutical absorbed in the tissue.
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Citations
24 Claims
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1. An estimating apparatus for irradiating a tissue having absorbed photo-sensitive pharmaceutical, the photo-sensitive pharmaceutical absorbing an excitation light and emitting fluorescence, with the excitation light emitted from a tip portion of a laser catheter, comprising:
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a connector to/from which the laser catheter is capable of being attached/detached; a light source for outputting the excitation light to the laser catheter via the connector; and a detection unit for detecting intensity of the fluorescence, the fluorescence being entered from the laser catheter via the connector, to estimate whether the tissue has changed because of reaction between the excitation light emitted from the tip portion of the laser catheter and the photo-sensitive pharmaceutical absorbed in the tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An estimating apparatus for therapy for atrial fibrillation, for irradiating a cardiac-muscle tissue having absorbed photo-sensitive pharmaceutical, the photo-sensitive pharmaceutical absorbing an excitation light and emitting fluorescence, with the excitation light emitted from a tip portion of a laser catheter, comprising:
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a connector to/from which the laser catheter is capable of being attached/detached; a light source for outputting the excitation light to the laser catheter via the connector; and a detection unit for detecting intensity of the fluorescence, the fluorescence being entered from the laser catheter via the connector, to estimate whether the cardiac-muscle tissue is changed because of reaction between the excitation light emitted from the tip portion of the laser catheter and the photo-sensitive pharmaceutical absorbed in the cardiac-muscle tissue. - View Dependent Claims (11, 12, 13, 14)
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15. An estimating method, comprising:
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irradiating a tissue having absorbed photo-sensitive pharmaceutical, the photo-sensitive pharmaceutical absorbing an excitation light and emitting fluorescence, with the excitation light emitted from a tip portion of a laser catheter; extracting the fluorescence corresponding to the irradiated excitation light via the laser catheter; and estimating whether the tissue has changed because of reaction between the excitation light emitted from the tip portion of the laser catheter and the photo-sensitive pharmaceutical absorbed in the tissue, based on intensity of the extracted fluorescence. - View Dependent Claims (16, 17, 18, 19)
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20. An estimating method using photo-sensitive pharmaceutical absorbing an excitation light and emitting a fluorescence, a laser catheter capable of emitting the excitation light from a tip portion, and an estimating apparatus including a connector to/from which the laser catheter is capable of being attached/detached and a light source for outputting the excitation light to the laser catheter via the connector, comprising:
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absorbing, in a tissue, the photo-sensitive pharmaceutical; leading the tip portion of the laser catheter to the tissue having absorbed the photo-sensitive pharmaceutical, the laser catheter being attached to the connector; irradiating the tissue having absorbed the photo-sensitive pharmaceutical with the excitation light emitted from the tip portion of the laser catheter, the excitation light being output from the light source; extracting the fluorescence corresponding to the irradiated excitation light via the laser catheter; and estimating whether the tissue has changed because of reaction between the excitation light emitted from the tip portion of the laser catheter and the photo-sensitive pharmaceutical absorbed in the tissue, based on intensity of the extracted fluorescence. - View Dependent Claims (21, 22, 23, 24)
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Specification