Patent Number: 6,569,189

Title: Tissue treatment apparatus including a bandpass filter transparent toselected wavelengths of IR electromagnetic spectrum

Abstract: A tissue treatment apparatus includes a bandage that is transparent to, ortransmissive of, energy in a predetermined range of the infrared (IR)portion of the electromagnetic spectrum. The bandage includes a layer thatacts as a bandpass filter, permitting IR radiation in the range ofwavelengths between 3 and 30 .mu.m to pass through the bandage to tissueagainst which the bandage is disposed. A heater is used to generate heat,including IR radiation, and an attachment device retains the heater overor on the bandpass bandage layer. The bandage and heater together have alow profile so as to be convenient for a patient, and are flexible so asto conform to the shape of a wound and to contours of the skin near thewound. The bandage is provided with an adhesive pattern for maintainingmoisture at the wound site. The heater may maintain a normothermiccondition at subdermal regions of the wound treatment area. A controllermay be provided for cycling the temperature of the heater in order tomaintain the normothermic condition.

Inventors: Augustine; Scott D. (Bloomington, MN), Rock; John P. (Minneapolis, MN), Van Duren; Albert P. (Chaska, MN)


International Classification: A61F 7/00 (20060101); A61F 007/00 ()

Expiration Date: 05/22015