Patent ID: 9592292
Date: 2017-03-14
CPC Classifications: A61K,A61N,B82Y,Y10S

Claim:
1. A method for skin cancer treatment comprising: a) providing a medium comprising photo-sensibilizing nanoparticles, wherein the nanoparticles comprise a silicon core; and an individually discrete reactant outer shell having a thickness less than 1.5 nanometers, the silicon core and an individually discrete reactant outer shell, forming a colloid-free and individually discrete nanoparticle; the reactant outer shell formed from at least one shell reactant selected from the reactant group consisting of oxygen and nitrogen, and the combined silicon core and reactant outer shell having a cross section distance of greater than 2 and less than 9 nanometers; b) placing the medium comprising photo-sensibilizing nanoparticles provided in step (a) on the surface of skin cancer cells in a free oxygen environment; c) irradiating the medium covering the cancer cells with a laser or light beam in the visible spectrum of 320-650 nanometer wavelength; wherein exposure of the nanoparticle to the laser or light beam causes formation of singlet oxygen from the oxygen molecules adjacent the exterior surface of the nanoparticle, which results in the death of cancer cells.