DELIVERY FIBER FOR SURGICAL LASER TREATMENT AND METHOD FOR MAKING SAME
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United States of America Patent
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Issued Date -
Aug 23, 2012
app pub date -
Feb 17, 2012
filing date -
Feb 17, 2011
priority date (Note) -
Abandoned
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Abstract
An method is disclosed for forming an optical surgical fiber assembly for delivering laser radiation from a laser radiation source to a treatment site that includes a sealed off capillary enclosing a delivery end of the fiber. The capillary is formed from an outermost layer of fused silica and an adjacent layer of boron-doped fused silica having a higher CTE than that of the fused silica. The capillary is shrink-fitted onto the delivery end of the fiber. A compressive stress is imparted to the outermost layer of the capillary as a result of the shrink-fitting process and the CTE difference between the layers. This provides mechanical hardening of the surface of the outermost layer.
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