Patent ID: 7789851

Claim:
A system for heating a fluid flowing through a fluid delivery cassette managed within a housing to a patient, said system comprising: a fluid delivery housing for accepting and controlling functions of a fluid delivery cassette; a fluid delivery cassette including at least one outlet tube extending from said fluid delivery cassette and a pump, said fluid delivery cassette used for delivery of said fluid to said patient; a heating device included with said fluid delivery cassette, wherein said heating device comprises a light source with invisible wavelength, an optical fiber and a light coupler, wherein light from said light source is delivered through said optical fiber to said light coupler which reflects light from the light source forward and backward within the light coupler to transfer energy from the light to said fluid, which flows through said light coupler to heat said fluid prior to delivery of said fluid to said patient, and a controller and a heat sensor controlling heating range of at least one of said heating device and said fluid to provide a temperature of said fluid that is comfortable to said patient.