Surgery – Truss – Pad
Patent
1975-09-26
1977-05-31
Trapp, Lawrence W.
Surgery
Truss
Pad
A61F 700
Patent
active
040262995
ABSTRACT:
An improved portable apparatus for selectively heating and cooling a body portion comprises a unit having at least one flexible pad and tubing for being wrapped around a body portion and acting as an evaporator on cooling and a condenser on heating, a compressor, a condenser acting as an evaporator on heating, a fan for moving air through the condenser, conduits for directing refrigerant composition in the unit, valve means for selectively reversing the flow of refrigerant to alternately cool and heat the pad and tubing, and a carrying case for the apparatus having a lid, bottom, front, back and side panels cooperating to form a chamber in which the apparatus is received, and a port in both the front and back panels for directing air into and from the chamber when the fan is operating. Other embodiments of the apparatus also include quick-connect couplings between the apparatus and pad refrigerant conduits, an auxiliary heat exchanger and heater, means for recharging the refrigerant composition in the apparatus, and novel flexible pads, especially useful for wrapping around human or animal body portions for cooling or heating thereof.
REFERENCES:
patent: 1896953 (1933-02-01), Hassell
patent: 2110022 (1938-03-01), Kliesrath
patent: 2260134 (1941-10-01), Ballman
patent: 2415455 (1947-02-01), Barnes et al.
patent: 2726658 (1955-12-01), Chessey
patent: 3918458 (1975-11-01), Nethery
Seiler Jerry R.
Trapp Lawrence W.
Vari-Temp Manufacturing Co.
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