Patient warming apparatus

Details Patient warming apparatus Patient warming apparatus

1991-07-24

1993-05-18

Green, Randall L.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604 65, 604 96, 604100, 604264, 128400, 128401, A61M 3100, A61F 712, A61F 700, H05B 712

Patent

active

052116310

ABSTRACT:
Patient warming apparatus includes a catheter which mixes relatively hot intravenous fluids with the patient's blood without excessive tissue damage, by monitoring the temperature of the mixed blood and the core temperature of the patient. The fluids are heated to about 50.degree.-100.degree. C. The catheter is surrounded by a relatively large diameter introducer sheath, and is spaced from the sheath by a cooling jacket. Unheated fluid is passed through the cooling jacket to thermally isolate the heated infusate from the patient, to prevent entry site and endothelial burning. An external computer control system monitors and controls both the body core temperature of the patient and the temperature and flow rate of the infusate.

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