Aspiration catheter
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United States of America Patent
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Feb 1, 2005
Issued Date -
N/A
app pub date -
Dec 6, 1999
filing date -
Mar 6, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Aspiration catheters suitable for use in the treatment of an occlusion in a blood vessel are disclosed. These catheters are especially useful in the removal of occlusions from saphenous vein grafts, the coronary and carotid arteries, arteries above the aortic arch and even smaller vessels. The catheters of the present invention are provided in either over-the-wire or in single operator form. Radiopaque markers are preferably incorporated into distal ends of the catheters to facilitate their positioning within the body. The catheters are provided with varying flexibility along the length of the shaft, such that they are soft and flexible enough to be navigated through the vasculature of a patient without causing damage, but are stiff enough to sustain the axial push required to position the catheter properly and to sustain the aspiration pressures.
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