Percutaneous venous catheter
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United States of America Patent
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-
Sep 5, 1989
Grant Date -
N/A
app pub date -
Aug 18, 1987
filing date -
Aug 18, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A percutaneous venous catheter includes a first fluid-pervious segment for implantation in the body and a second extravascular segment composed of a flexible tube surrounded by a vapor-barrier sheath. A cuff marks the boundary between the two segments and a connector fitting is mounted to the free end of the extravascular segment, there being a continuous fluid path between the fitting and the tip. The vapor barrier present in the extravascular segment of the catheter prevents fluid transpiration through the catheter wall that tends to draw fluid along the catheter causing an occluding thrombus formation at the catheter tip.
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