Cancer diagnosis and treatment device having laser beam generator

A cancer diagnosis and treatment device for performing cancer diagnosis and treatment using a photosensitive material having affinity to cancer foci in a body and laser beams having different wavelengths in an absorption wavelength range of the photosensitive material, comprising:

• a laser beam source including a solid-state laser generator for emitting a first laser beam having a first wavelength;
• a laser-wavelength varying unit for converting the first laser beam into second and third laser beams, the second laser beam having a second wavelength which stimulates a sterilizing photochemical reaction between the photosensitive material and the cancer foci to perform cancer treatment, and the third laser beam having a third wavelength for inducing fluorescence inherent to the photosensitive material to enable cancer diagnosis, the first, second and third wavelengths being different from each other;
• an endoscope unit for guiding the second and third laser beams from said laser-wavelength varying unit to the cancer foci and for transmitting an image of the fluorescence of the photosensitive material to an outside of the body;
• and
• a cancer observing unit having a screen for receiving the image of the fluorescence of the photosensitive material transmitted through said endoscope unit and for displaying the image on said screen to thereby perform cancer diagnosis, wherein said laser-wavelength varying unit comprises a first harmonic generator for generating higher harmonic laser beams of the first laser beam and for outputting one of the higher harmonic laser beams, and an optical parametric oscillator for receiving the one of the higher harmonic laser beams and for simultaneously generating the second and third laser beams having wavelengths suitable for the cancer treatment and diagnosis, respectively, wherein said first harmonic generator includes means for generating a first harmonic laser beam having a wavelength of 355 nm on a basis of the first laser beam and for outputting the first harmonic laser beam to said optical parametric oscillator, and said optical parametric oscillator includes means for generating the second and third laser beams having wavelengths of 630 nm and 813 nm, respectively, on the basis of the generated first harmonic laser beam.

A cancer diagnosis and treatment device for performing cancer diagnosis and treatment using a photosensitive material having affinity to cancer foci in a body and laser beams having different wavelengths in an absorption wavelength range of the photosensitive material, comprising:

• a laser beam source including a solid-state laser generator for emitting a first laser beam having a first wavelength;
• a laser-wavelength varying unit for converting the first laser beam into second and third laser beams, the second laser beam having a second wavelength which stimulates a sterilizing photochemical reaction between the photosensitive material and the cancer foci to perform cancer treatment, and the third laser beam having a third wavelength for inducing fluorescence inherent to the photosensitive material to enable cancer diagnosis, the first, second and third wavelengths being different from each other;
• an endoscope unit for guiding the second and third laser beams from said laser-wavelength varying unit to the cancer foci and for transmitting an image of the fluorescence of the photosensitive material to an outside of the body;
• and
• a cancer observing unit having a screen for receiving the image of the fluorescence of the photosensitive material transmitted through said endoscope unit and for displaying the image on said screen to thereby perform cancer diagnosis, wherein said laser-wavelength varying unit comprises a first harmonic generator for generating higher harmonic laser beams of the first laser beam and for outputting one of the higher harmonic laser beams, and an optical parametric oscillator for receiving the one of the higher harmonic laser beams and for simultaneously generating the second and third laser beams having wavelengths suitable for the cancer treatment and diagnosis, respectively, wherein said solid-state laser generator comprises a wavelength-variable laser generator for emitting a laser beam with a wavelength which can be varied within a predetermined wavelength range.