Mechanical pump for removal of fragmented matter and methods of manufacture and use
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United States of America Patent
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-
Oct 2, 2012
Grant Date -
Feb 9, 2012
app pub date -
Oct 21, 2011
filing date -
Sep 17, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Material transport catheters and methods for their use rely on rotation of an impeller within a catheter body and a clearing element for preventing buildup of materials at the opening of the catheter body. The impeller preferably comprises an inner tube or shaft having a helical rotor formed over an outer surface thereof. The clearing element may comprise a free end of a structure near the distal end of the catheter body for disrupting clot, wherein the free end of the structure extends into the distal opening of the catheter body to break up materials as the impeller is rotated. Alternatively, the clearing element may comprise a cutting member disposed at the distal opening of the catheter body.
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