Optical probe for arterial tissue analysis
First Claim
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1. An optical probe for arterial tissue comprising:
- a fiber optic probe having at least one delivery optical fiber and a plurality of collection optical fibers;
a reflective optical element to deliver and collect light in a radial direction at a distal end of the probe;
a first light source to deliver fluorescence excitation light;
a second light source to deliver reflectance light;
a filter element; and
a detector system that detects the fluorescence and reflectance light.
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Abstract
The present invention relates to systems and methods used in the measurement of arterial tissue. Optical probes in accordance with the invention use optical fibers to deliver and collect light using a sidelooking catheter. Diffused white light and fluorescence scattering is collected and processed to provide for improved artery wall diagnosis.
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Citations
20 Claims
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1. An optical probe for arterial tissue comprising:
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a fiber optic probe having at least one delivery optical fiber and a plurality of collection optical fibers;
a reflective optical element to deliver and collect light in a radial direction at a distal end of the probe;
a first light source to deliver fluorescence excitation light;
a second light source to deliver reflectance light;
a filter element; and
a detector system that detects the fluorescence and reflectance light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of using an optical probe for arterial tissue comprising:
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providing a fiber optic probe having at least one delivery optical fiber and a plurality of collection optical fibers;
providing a reflective optical element to deliver and collect light in a radial direction at a distal end of the probe;
coupling light from a first light source to deliver fluorescence excitation light with at least one delivery fiber;
coupling light from a second light source to deliver reflectance light;
providing a filter element; and
detecting fluorescence and reflectance light with the collection optical fibers. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 19, 20)
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18. The method of claim 18 further comprising actuating three sources in sequence in less than one second while actuating the optical fiber switch.
Specification