Near hyperthermic heater wound covering

• US 6,071,254 A
• Filed: 03/18/1999
• Issued: 06/06/2000
• Est. Priority Date: 06/19/1992
• Status: Expired due to Fees

• Current Assignee: Arizant Technologies LLC (3M Company)
• Original Assignee: Augustine Medical, Inc. (3M Company)
• Inventors: Augustine, Scott D.
• Primary Examiner(s): LEWIS, KIM M
• Application Number:
  US09/272,028
• Time in Patent Office: 446 Days
• Field of Search: 602/2, 602/41, 602/42, 602/1, 602/44, 602/46, 602/48, 602/52, 602/54, 602/57, 602/58, 602/59, 128/887, 128/888, 128/889, 607/96, 607/99, 607/108, 607/109, 607/111, 607/112, 607/152, 604/113, 604/114
• US Class Current: 602/2
• CPC Class Codes: A61F 13/023 wound covering film layers without a fluid retention layer
• CPC Class Codes: A61F 2007/0001 Body part
• CPC Class Codes: A61F 2007/006 of gas
• CPC Class Codes: A61F 2007/0086 with a thermostat
• CPC Class Codes: A61F 2007/0091 inflatable
• CPC Class Codes: A61F 2007/0095 with a temperature indicator
• CPC Class Codes: A61F 2007/0226 adhesive, self-sticking
• CPC Class Codes: A61F 2007/0255 with a reflective layer
• CPC Class Codes: A61F 2007/0295 for heating or cooling or use at more than one temperature
• CPC Class Codes: A61F 2013/0017 possibility of applying fluid
• CPC Class Codes: A61F 2013/00174 possibility of applying pressure
• CPC Class Codes: A61F 2013/00187 insulating; warmth or cold applying
• CPC Class Codes: A61F 2013/00195 electric warmer
• CPC Class Codes: A61F 2013/002 with temperature control
• CPC Class Codes: A61F 2013/00212 infrared absorbing or reflecting
• CPC Class Codes: A61F 2013/0057 with openable cover
• CPC Class Codes: A61F 2013/00825 protection of wound surround
• CPC Class Codes: A61F 2013/00834 as a frame
• CPC Class Codes: A61F 2013/00846 with transparent or translucent part
• CPC Class Codes: A61F 2013/00851 with grid or reference marks
• CPC Class Codes: A61F 2013/00868 : thin film
• CPC Class Codes: A61F 2013/00872 : with controlled oxygen permeability
• CPC Class Codes: A61F 2013/00906 : for transcutaneous or transdermal drugs application
• CPC Class Codes: A61F 2013/0091 : with disinfecting or anaesthetics means, e.g. anti-mycrobic
• CPC Class Codes: A61F 2013/00919 : for physical therapy, e.g. cold or magnetic
• CPC Class Codes: A61F 2013/00944 : humidity; moisture
• CPC Class Codes: A61F 2013/00953 : temperature
• CPC Class Codes: A61F 7/007 : characterised by electric heating
• CPC Class Codes: A61F 7/02 : Compresses or poultices for effecting heating or cooling
• CPC Class Codes: A61F 7/03 : thermophore, i.e. self-heating, e.g. using a chemical reaction
• CPC Class Codes: A61M 1/85 : with gas or fluid supply means, e.g. for supplying rinsing fluids or anticoagulants for negative pressure wound therapy A61M1/92, A61M1/94; combined with tracheal tubes A61M16/0463; dental instruments with combined rinsing and aspirating A61C17/0208
• CPC Class Codes: A61M 2202/0275 : Nitric oxide [NO]
• CPC Class Codes: A61M 3/0283 : with at least two inner passageways, a first one for irrigating and a second for evacuating suction-irrigation systems A61M1/77; aspiration tips with fluid supply means A61M1/85; for negative pressure wound therapy A61M1/92
• CPC Class Codes: A61M 35/30 : Gas therapy for therapeutic treatment of the skin

Abstract

A non-contact controllable heater wound covering having a peripheral sealing ring covered by a layer to which is attached a heater and this assembly is attached to the skin with an adhesive so that the heater is held proximate the wound area in a non-contact position. The layer and peripheral sealing ring together define a treatment volume proximate the wound. The wound covering includes a programmable active heater control and the sealing ring may dispense water to control the humidity of the treatment volume. One form of active heat is an electrical resistive filament in variable geometric shapes providing versatility in application of heat to different types of wounds and wound area geometries. Another form of active heat is the transfer of a heated gas to the wound covering.

Claims

1. A wound covering for application to a wound area of a patient'"'"'s body, the wound covering comprising:

a sealing ring, having an upper surface and a lower surface, and defining an open cavity;

a barrier layer spanning the sealing ring and attached to the sealing ring proximate the upper surface, over the open cavity, and spaced apart from the lower surface by the sealing ring;

attachment means proximate the lower surface for attaching the sealing ring around a wound area; and

a heater supported on the barrier layer over the open cavity for maintaining a temperature in a range from above 38°

C. to about 46°

C.

2. The wound covering of claim 1 in which the heater comprises an active heater.

3. The wound covering of claim 1 in which the heater comprises a passive heat reflecting layer.

4. The wound covering of claim 1 in which the heater comprises a warm water pad.

5. The wound covering of claim 1 in which the heater comprises an exothermic chemical heating pad.

6. The wound covering of claim 1 in which the heater comprises a phase change salt pad.