Universal thermotherapy technique

Details Universal thermotherapy technique Universal thermotherapy technique

A - Human Necessities

61

F

A61F 7/00 (2006.01) B65D 45/34 (2006.01) B65D 51/18 (2006.01)

Patent

CA 2058400

UNIVERSAL THERMOTHERAPY APPLICATOR ABSTRACT OF THE DISCLOSURE A universal applicator for applying therapeutic heat to a localized skin area of a patient. The applicator includes a casing dome whose open base is maintained in spaced relation to the skin area to define an air flow zone therebetween. Coaxially mounted at an intermediate position within the dome is a motor-driven fan which creates a negative pressure region in the dome above the fan and a positive pressure region therebelow whereby air drawn from the negative pressure region is propelled into the positive pressure region from which it is discharged into the air flow zone. From this zone, the air is returned to the negative pressure region, thereby creating a circulatory flow loop minimizing the discharge of air into the atmosphere outside the flow zone. Mounted coaxially within the dome in the negative pressure region is an electric heater ring formed by a helical resistance coil. When the heater ring is energized, the air circulating in the loop passes through the coil and is raised in temperature to a level that is a function of fan velocity, the higher the velocity the lower the temperature level. An electronic control unit associated with the fan motor acts to periodically change the fan velocity from a predetermined high value at which the resultant temperature level of the air in the flow zone is then at a base level above ambient but somewhat below the sensitivity threshold of the patient being treated, to a predetermined low velocity value at which the resultant temperature level is raised above the base level to create high temperature heat pulses whose peaks are well above the sensitivity threshold.

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