Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1992-04-29
1993-12-14
Yasko, John D.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
606 27, 606194, 607106, A61M 2900
Patent
active
052697584
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.
REFERENCES:
patent: 1652954 (1927-12-01), Pierce
patent: 2024301 (1935-12-01), Norwood
patent: 4646719 (1987-03-01), Newar et al.
patent: 4754752 (1988-07-01), Ginsburg et al.
patent: 4955377 (1990-09-01), Lennox et al.
Gutowski Anthony
Yasko John D.
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