Heat dressing comprising a heat generating unit and an adhesive layer

• US 5,662,624 A
• Filed: 09/26/1994
• Issued: 09/02/1997
• Est. Priority Date: 03/27/1992
• Status: Expired due to Term

• Current Assignee: Coloplast A/S
• Original Assignee: Coloplast A/S
• Inventors: Sundstrom, Staffan, Samuelsen, Peter Boman, Sch.o slashed.nfeldt, Lars
• Primary Examiner(s): Hafer, Robert A.
• Assistant Examiner(s): RODRIGUEZ, CRIS LOIREN
• Application Number:
  US08/307,750
• Time in Patent Office: 1,072 Days
• Field of Search: 602/2, 602/54, 602/57, 602/42, 602/43, 604/113, 604/114, 604/291, 600/2
• US Class Current: 604/291
• CPC Class Codes: A61F 13/023 wound covering film layers without a fluid retention layer
• CPC Class Codes: A61F 2007/0071 using a resistor, e.g. near the spot to be heated
• CPC Class Codes: A61F 2007/0086 with a thermostat
• CPC Class Codes: A61F 7/007 characterised by electric heating
• CPC Class Codes: A61F 7/034 Flameless
• CPC Class Codes: A61L 15/18 containing inorganic materials
• CPC Class Codes: A61L 15/58 Adhesives
• CPC Class Codes: A61L 15/60 Liquid-swellable gel-forming materials, e.g. super-absorbents

Abstract

A heat dressing for treatment of skin areas and comprising a heat generating unit and a liquid-absorbing adhesive layer which prior to use is coated with a strippable release layer. The adhesive layer is preferably of a hydrocolloidal material and may optionally contain one or more medicaments or be coated with alginate fibre mats. The heat generating unit generates heat preferably by means of galvanic or chemical energy, and the heat dressing may further comprise elements for controlling the heat development and/or the surface temperature.

Claims

1. A heat dressing, comprising a substantially planar heat generating unit being coated on one side surface thereof with a layer of liquid absorbing adhesive material which prior to use of the bandage is coated with a strippable cover layer, characterized in that the heat generating unit comprises metal powder, and that the unit is so shaped that it is possible to bring the oxygen in the air in contact with the said metal powder.

2. A heat dressing according to claim 1, characterized in that the metal powder is a porous powder, and that the metal is selected from iron, aluminium and magnesium.

3. A heat dressing according to claim 2, characterized in that the heat generating unit further comprises fillers and moisteners.