Patent ID: 6375624
Filing Date: 2002-04-23
Classification: A61M,Y10S

Abstract:
An apparatus for detecting extravasations in tissue injected with fluid, the apparatus comprising:a fluid temperature sensor for sensing the temperature of fluid present in a fluid path element which transmits fluid to a patient and generating a fluid temperature signal in response thereto; a tissue temperature sensor for sensing the temperature of tissue proximate to the site of injection and generating a tissue temperature signal in response thereto; and a processor adaptable to periodically receive said tissue temperature signal and said fluid temperature signal, said processor having an alarm circuit for declaring the occurrence of an extravasation and a threshold calculation circuit for periodically calculating at least one threshold value as a function of said tissue temperature signal and said fluid temperature signal, said processor activating said alarm circuit as a function of said tissue temperature signal, said fluid temperature signal and said at least one threshold value during a fluid injection.