Devices and methods for treatment of skin conditions

• US 7,749,260 B2
• Filed: 12/09/2005
• Issued: 07/06/2010
• Est. Priority Date: 12/10/2004
• Status: Expired due to Fees

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Choi, George, Da Silva, Luiz B., Neev, Joseph
• Primary Examiner(s): GIBSON, ROY DEAN
• Application Number:
  US11/299,284
• Publication Number:
  US 20060142750A1
• Time in Patent Office: 1,670 Days
• Field of Search: 606 41- 50, 607/96, 607 98- 99
• US Class Current: 607/96
• CPC Class Codes: A61B 18/082 Probes or electrodes therefor
• CPC Class Codes: A61B 2017/00734 battery operated
• CPC Class Codes: A61B 2017/00761 Removing layer of skin tissue, e.g. wrinkles, scars or cancerous tissue
• CPC Class Codes: A61B 2018/00005 Cooling or heating of the probe or tissue immediately surrounding the probe
• CPC Class Codes: A61B 2018/0047 Upper parts of the skin, e.g. skin peeling or treatment of wrinkles
• CPC Class Codes: A61B 2018/00714 Temperature
• CPC Class Codes: A61B 2018/00761 Duration
• CPC Class Codes: A61B 2018/00791 Temperature

Abstract

Devices and methods for the treatment of skin conditions and lesions are disclosed herein. One aspect of the invention is a compact hand held device that can be safely used by those suffering from skin conditions, such as acne, warts, cold blisters, blemished skin, or fine wrinkles. The devices described herein employ the application of heat for the treatment of skin conditions and lesions. Typically, the peak temperatures employed are about 70° C. to about 400° C. by the devices, are achieved in less than about 1 second, and maintained for less than about 1 second. In some embodiments, the skin surface is heated with heat pulses. Thermal conduction transfers heat from the device to the skin and causes a biological response that accelerates acne clearing, treats blemished skin, itching, or fine wrinkles. The total heat transferred is low enough to prevent burns.

Claims

1. A device for treatment of skin conditions comprising:

a heating element adapted and configured to be placed against a skin surface to be treated;

a handle area adapted and configured to be held by a user and to support the heating element when placed against the skin surface; and

a heating circuit adapted and configured to heat the heating element to a peak temperature of at least about 67°

C. for less than about 0.1 second, wherein said heating element comprises a backing layer, an electrically insulating protective layer, and/or a high conductivity layer.

2. A device for treatment of skin conditions comprising:

a heating element adapted and configured to be placed against a skin surface to be treated;

a handle area adapted and configured to be held by a user and to support the heating element when placed against the skin surface; and

a heating circuit adapted and configured to heat the heating element to a peak temperature of at least about 67°

C. for less than about 0.1 second, wherein a skin contact surface of said heating element has a surface area of about 1 cm².

3. A device for treatment of skin conditions comprising:

a heating element adapted and configured to be placed against a skin surface to be treated;

a handle area adapted and configured to be held by a user and to support the heating element when placed against the skin surface;

a heating circuit adapted and configured to heat the heating element to a peak temperature of at least about 67°

C. for less than about 0.1 second; and

a temperature sensor, said sensor being adapted and configured to sense the temperature of said heating element and to control said temperature of said heating element.

4. A device for treatment of skin conditions comprising:

a heating element adapted and configured to be placed against a skin surface to be treated;

a handle area adapted and configured to be held by a user and to support the heating element when placed against the skin surface a heating circuit adapted and configured to heat the heating element to a peak temperature of at least about 67°

C. for less than about 0.1 second; and

a light emitting diode.

5. A device for treatment of skin conditions comprising:

a heating element adapted and configured to be placed against a skin surface to be treated;

a handle area adapted and configured to be held by a user and to support the heating element when placed against the skin surface; and

a heating circuit adapted and configured to heat the heating element to a temperature of at least about 67°

C. for less than about 0.1 second, wherein the heating circuit is further adapted to heat the heating element to a peak temperature of at least 67°

C. for less than about 0.1 second, lower the temperature of the heating element for a period of about 0.5 seconds, and reheat the heating element to a temperature of at least 67°

C. for less than about 0.1 second.

6. A method of treating a skin condition comprising

applying a heat source to a skin surface, heating the heat source to a peak temperature greater than about 67°

C. for less than about 0.1 second,

ceasing the heating step for about ten milliseconds to about five seconds,

then reheating the skin surface to a temperature of at least about 70°

C. for a time duration of less than about 1 second.

7. The method of claim 6 further comprising repeating the ceasing and reheating steps.