Apparatus for irradiating the bronchi of a patient for the purpo

Details Apparatus for irradiating the bronchi of a patient for the purpo Apparatus for irradiating the bronchi of a patient for the purpo

1991-01-04

1991-10-08

Lee, John D.

Optical waveguides

With optical coupler

Input/output coupler

128 4, 128 6, G02B 2326

Patent

active

050548670

ABSTRACT:
An apparatus for irradiating the bronchi of a patient for the purpose of photodynamic therapy has an optical fibre (11) that feeds the light of a laser into a bronchoscope and is surrounded by a light-guide tube (8) and an outer tube (2). The distal end (13) of the optical fibre (11) is embedded in a silicone composition (17) containing 7 parts per thousand of TiO.sub.2 particles having a particle size of 0.2 .mu.m. The silicone composition (17) fills the front end of the light-guide tube (8) as far as the end face (6) of an aluminium cylinder (5) which acts as a mirror. The light dispersed by the TiO.sub.2 particles is emitted radially through the light-guide tube (8) and the front portion of the outer tube (2) and acts on the patient's bronchi.

REFERENCES:
patent: 4017150 (1977-04-01), Imai
patent: 4551129 (1985-11-01), Coleman et al.
patent: 4660925 (1987-04-01), McCaughan, Jr.
patent: 4693244 (1987-09-01), Daikuzoni
patent: 4693556 (1987-09-01), McCaughan, Jr.
patent: 4927231 (1990-05-01), Levatter

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