Intravascular catheter and method for treatment of hypothermia
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United States of America Patent
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-
Dec 14, 1993
Grant Date -
N/A
app pub date -
Apr 29, 1992
filing date -
Apr 29, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved intravascular device (20) is adapted for use in treating hypothermia in a patient. The improved device includes an elongated flexible catheter (21) having a distal end piece (26) arranged in spaced relation to a catheter main body portion (32). The distal end piece and catheter main body portions are joined by a wire stylet (33) and by a flexible wall portion (43). The stylet is adapted to be rotated relative to the catheter main body portion to selectively furl and unfurl the flexible wall portion. Once inserted into a patient blood vessel, a pump (25) is arranged to circulate heated fluid (e.g., heated saline solution) through communicating chambers (45,44) in heat exchange relation to blood flowing past the catheter. The pressure of fluid supplied by pump 25 may be caused to pulsate to prevent blood from clotting on the catheter.
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