Therapeutic light source and method
DCFirst Claim
1. A light source for therapy or diagnosis of a patient, comprising a housing in the form of a trapezoid prism open at the base and having an upper inner surface carrying an array of light-emitting diodes.
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Accused Products
Abstract
A therapeutic light source, for example for photodynamic therapy (PDT), comprises an air-cooled array of LED'"'"'s (Lx,y), the air being vented in the vicinity of the array. The array may be mounted at the distal end of a hand piece suitable for invasive therapy. The LED'"'"'s may be coupled to a light guide (W, L). The emission spectra of the LED'"'"'s may be substantially limited to the range 550 to 660 nm, and preferably to one of the ranges 590 to 640 nm, 560 to 644 nm, 650 to 660 nm, and 550 to 570 nm. The therapeutic light source may comprise a non-planar array of light-emitting diodes L conforming with the shape of an external area to be treated or diagnosed. The therapeutic light source may comprise a non-planar array of independently switchable red and blue light-emitting diodes LR, LB, mounted on a flexible backing.
228 Citations
15 Claims
- 1. A light source for therapy or diagnosis of a patient, comprising a housing in the form of a trapezoid prism open at the base and having an upper inner surface carrying an array of light-emitting diodes.
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4. A light source for therapy or diagnosis of a patient, comprising an intraluminal probe carrying on a substantially spherical surface thereof an array of discrete light-emitting diodes.
- 5. A therapeutic light source, comprising an array of light-emitting diodes arranged so that light from the light-emitting diodes is incident directly on a treatment field with an intensity of at least approximately 10 mW/cm2 and a spatial intensity fluctuation of approximately 10% or less, and means for cooling the diodes by forced air convection.
- 7. A therapeutic light source, comprising an array of light-emitting diodes arranged to give an output intensity of at least 10 mW/cm2 in a treatment field, means for cooling the diodes by forced air convection, and a passage for carrying the air from a proximal end thereof to a distal end thereof, wherein the diodes are mounted at the distal end, the distal end is dimensioned so as to be locatable proximate a cervix such that light emitted by the light-emitting diode array is incident on the cervix, and the distal end is concave so as to fit over the cervix.
Specification