Method and Device for Wavelength Shifted Imaging
First Claim
1. A method of imaging tissues using non-linear optical media, comprising:
- propagating a predetermined wavelength of light onto a target tissue located within a body of a patient from a distal end of an elongate device disposed within the body of the patient, said predetermined wavelength of light being greater than 1000 nanometers;
receiving the predetermined wavelength of light reflected from the target tissue into and through a lens system;
passing the predetermined wavelength of light from the lens system into and through a non-linear optical media, the non-linear optical media being disposed in series with and directly coupled to the lens system;
reducing the predetermined wavelength of light reflected from the target tissue and that has passed through the non-linear optical media to less than 1000 nanometers; and
receiving at least a portion of the reduced wavelength of light onto a silicon-based solid state imaging device.
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Accused Products
Abstract
A micro-camera catheter device is disclosed having at least one light source disposed on a distal end of a catheter. The light source is capable of propagating a predetermined wavelength of light with a wavelength greater than approximately 700 nanometers onto a target. The device further includes a lens system disposed on the distal end of the catheter, said lens system configured to receive light reflected from the target. The device further includes a non-linear optical media disposed about the lens system configured to reduce the wavelength of light reflected from the target. The device also includes a silicon-based solid state imaging device disposed behind the non-linear optical media configured to receive light from the non-linear optical media.
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Citations
20 Claims
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1. A method of imaging tissues using non-linear optical media, comprising:
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propagating a predetermined wavelength of light onto a target tissue located within a body of a patient from a distal end of an elongate device disposed within the body of the patient, said predetermined wavelength of light being greater than 1000 nanometers; receiving the predetermined wavelength of light reflected from the target tissue into and through a lens system; passing the predetermined wavelength of light from the lens system into and through a non-linear optical media, the non-linear optical media being disposed in series with and directly coupled to the lens system; reducing the predetermined wavelength of light reflected from the target tissue and that has passed through the non-linear optical media to less than 1000 nanometers; and receiving at least a portion of the reduced wavelength of light onto a silicon-based solid state imaging device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of imaging tissues using non-linear optical media, comprising:
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placing a medical device within a body of a patient; propagating a predetermined wavelength of light onto a target tissue located within the body of the patient from a distal end of the medical device, said predetermined wavelength of light being greater than 700 nanometers; receiving a portion of the predetermined wavelength of light propagated from the device and reflected from the target tissue into and through a lens system; passing the predetermined wavelength of light from the lens system into and through a non-linear optical media, the non-linear optical media being disposed in series with and behind the lens system; halving the predetermined wavelength of light passed through the non-linear optical media; and receiving at least a portion of the halved wavelength of light onto a silicon-based solid state imaging device. - View Dependent Claims (11, 12, 13, 14)
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15. A method of imaging tissue within a body that is covered by an opaque material, comprising:
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placing a medical device within a cavity of a patient, propagating a predetermined wavelength of light through a first substantially opaque material covering a target tissue located within the body of the patient from a distal end of the medical device, said predetermined wavelength of light being greater than 1500 nanometers; receiving a portion of the predetermined wavelength of light propagated from the device reflected from the target tissue into and through a lens system; passing the predetermined wavelength of light from the lens system into and through a non-linear optical media, the non-linear optical media being disposed in series with and behind the lens system; reducing the predetermined wavelength of light passed through the non-linear optical media to below 1000 nanometers; receiving at least a portion of the reduced wavelength of light onto a silicon-based solid state imaging device; and generating an image of the target tissue covered by the substantially opaque material. - View Dependent Claims (16, 17)
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18. A micro-camera catheter device, comprising:
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at least one light source disposed on a distal end of a catheter, said light source capable of propagating a predetermined wavelength of light onto a target, the wavelength being between approximately 1000 nanometers and approximately 2000 nanometers; a lens system disposed on the distal end of the catheter, said lens system configured to receive light propagated from the light source and reflected from the target; a non-linear optical device disposed behind the lens system, the non-linear optical device configured to halve the wavelength of the light reflected from the target; and a silicon-based SSID disposed behind the non-linear optical device, said silicon-based SSID configured to receive the halved wavelength of light thereon. - View Dependent Claims (19, 20)
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Specification