Fibre-optic apparatus for the photodynamic treatment of tumors
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United States of America Patent
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Sep 15, 1992
Grant Date -
N/A
app pub date -
Jan 4, 1991
filing date -
Jan 9, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A bronchoscope has a fibre-optic apparatus for the photodynamic treatment of tumors in the region of the furcate branches of the bronchi, the divergent pencil of rays (13), which emerges from the end face (9) of an optical fibre, striking a lens arrangement consisting of two microlenses (14,15) which, owing to the spherical aberration, deflect edge rays (23) in the divergent pencil of rays (13) of the optical fibre (8) in such a manner that a homogeneous sharp-edged emerging pencil of rays is formed.
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