Patient warming methods

Details Patient warming methods Patient warming methods

1992-05-12

1994-01-18

Isabella, David

Surgery

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

Treating material applied to or removed from external...

604291, 604 82, 604 52, 604 53, 604 4, A61M 3500, A61M 3700, A61M 3100, A61F 700

Patent

active

052795985

ABSTRACT:
A patient warming method and apparatus including 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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