A - Human Necessities – 61 – N
Patent
A - Human Necessities
61
N
A61N 5/06 (2006.01) A61B 18/22 (2006.01)
Patent
CA 2044391
LASER CATHETER DIFFUSER ABSTRACT OF THE DISCLOSURE A light transmitting and diffusing apparatus is disclosed for activating photodynamic therapy in soft cancerous tumors. In the preferred embodiment, the apparatus is affixed to a standard medical laser that transmits light through an optical fiber to a point adjacent to or within a cancerous tumor. The apparatus includes an unclad fiber-optic core with a reflective cap at a terminal end of the core. A diffuser matrix coats the unclad fiber-optic core and a transparent tubular sleeve encases the matrix and core. The transparent tubular sleeve includes a conical tip adjacent to the terminal end of the core for easy penetration of the cancerous tumors. In use, light leaves the medical laser, travels along the optical fiber into the unclad fiber-optic core. There, some light passes directly out of the core through the diffuser matrix, and the remaining light is reflected, by this reflective cap, back into and around the core, away from its terminal end. The resulting pattern of diffuse light is roughly shaped like a "butternut-squash", producing a decreased risk of damage to blood vessels, nerves, etc., that may be just beyond the terminal end of the core, along its longitudnal axis.
Angiolaz Incorporated
Khoury Adib I.
Ridout & Maybee Llp
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