Valved perfusion cardiovascular catheters
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United States of America Patent
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-
Nov 17, 1992
Grant Date -
N/A
app pub date -
Oct 4, 1990
filing date -
Oct 4, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A guide catheter for use in coronary angioplasty, atherectomy and other cardiovascular interventions is provided with a side port having a one-way valve arrangement which permits the flow of aortic blood into the catheter lumen and out of the distal orifice of the catheter yet which closes in response to pressure injection of a liquid through the lumen of the catheter, such as injection of radiopaque contrast liquid. The valve element may be in the form of a thin flexible film constructed to be substantially immediately responsive to light pressure differentials across the valve element.
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