Microcatheter
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United States of America Patent
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Jun 30, 2015
Grant Date -
Feb 11, 2010
app pub date -
Sep 13, 2006
filing date -
Sep 13, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
In a microcatheter, a shaft tube thereof is sectioned into a proximal zone, an intermediate zone, and a distal zone from a connector to the forward end thereof, each being formed of a multilayered tube, including three types of multilayered tubes different in hardness, an inner layer extending along all the zones from the proximal zone to the distal zone of the shaft tube, and a reinforcing material being fitted to the outer circumference of the inner layer, a first outer layer extending along all the zones from the proximal zone to the distal zone of the shaft tube so as to coat, and adhere to, the inner layer and the reinforcing material, to form a base layer structure of the inner layer/reinforcing material/first outer layer, a third outer layer coating the first outer layer of the base layer structure in the proximal zone, a second outer layer coating the first outer layer of the base layer structure in the intermediate zone.
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