Optical catheter with stranded fibers
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United States of America Patent
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May 16, 1995
Issued Date -
N/A
app pub date -
Sep 20, 1993
filing date -
Aug 26, 1992
priority date (Note) -
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status (Latency Note)
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Abstract
A catheter having an axis extending between a proximal end and an opposing distal end includes a plurality of optical fibers arranged to spiral in a first direction to form a circumferential layer around the axis. Rotation of the catheter in the first direction tends to expand the layer while rotation of the catheter in a second opposite direction tends to contract the circumferential layer. An outer jacket limits the expansion of the circumferential layer while an inner core limits the contraction of the circumferential layer to increase torquability of the catheter. The stranded fibers equalize bending stresses to maintain a circular cross-sectional configuration, increase flexibility and a reduced diameter for the catheter.
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