Retrograde coronary sinus catheter
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United States of America Patent
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-
Jun 28, 1994
Grant Date -
N/A
app pub date -
Apr 27, 1992
filing date -
Apr 27, 1992
priority date (Note) -
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status (Latency Note)
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Abstract
A coronary sinus catheter for the retrograde infusion of cardioplegia solutions into the coronary sinus. The catheter is adapted for improved retention in the coronary sinus. The catheter comprises a catheter tube having infusion, pressure-sensing and balloon-inflation lumens, an inflatable balloon and a pressure sensor tube in fluid communication with the balloon-inflation lumen for sensing pressure in the inflatable balloon. The internal volume of the pressure sensor tube is relatively non-expansible relative to the internal volume of the inflation balloon in normal operation of the catheter. Other aspects of the invention include a constricted portion in the infusion lumen that is believed to eliminate spraying of fluid through the infusion lumen outlet(s), and a temperature sensor strip providing a display on the catheter of the temperature of the infused fluid.
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