Anti-infective central venous catheter with diffusion barrier layer
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United States of America Patent
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May 24, 2011
Grant Date -
May 10, 2007
app pub date -
Dec 19, 2006
filing date -
May 13, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A catheter includes a wall surrounding a lumen. The wall has an inner portion forming an outer surface of the lumen and an outer portion surrounding at least a portion of an outer surface of the inner portion. A first diffusion rate of materials from the lumen through the inner portion is different from a second diffusion rate through the outer portion. A durometer hardness of the inner portion is lower than a durometer hardness of the outer portion.
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