Methods and devices for the treatment of skin lesions

• US 8,182,475 B2
• Filed: 10/02/2006
• Issued: 05/22/2012
• Est. Priority Date: 05/31/2003
• Status: Expired due to Fees

• Current Assignee: LumaTherm, Inc.
• Original Assignee: LumaTherm, Inc.
• Inventors: Conrad, Robert, Conrad, Charles
• Primary Examiner(s): GIBSON, ROY DEAN
• Application Number:
  US11/541,805
• Publication Number:
  US 20070088411A1
• Time in Patent Office: 2,059 Days
• Field of Search: 606 27- 31, 607/96, 607 98-102, 607108-112
• US Class Current: 606/31
• CPC Class Codes: A61F 2007/0001 Body part
• CPC Class Codes: A61F 2007/0078 with a battery
• CPC Class Codes: A61F 7/007 characterised by electric heating
• CPC Class Codes: A61P 17/00 Drugs for dermatological disorders
• CPC Class Codes: A61P 17/10 Anti-acne agents
• CPC Class Codes: A61P 31/04 Antibacterial agents
• CPC Class Codes: A61P 31/10 Antimycotics
• CPC Class Codes: A61P 31/12 Antivirals
• CPC Class Codes: A61P 31/22 for herpes viruses

Abstract

Methods and devices for the treatment of skin lesions resulting from bacterial, fungal or viral infections or from exposure to irritants are disclosed. The invention relates methods and devices for delivering a controlled dose of thermal energy to the infected or irritated tissue and thereby speed the recovery process.

Claims

1. A method of treating a skin lesion, comprising:

(a) applying thermal energy to the lesion with a device, wherein the thermal energy is provided by a heating element in thermal contact with an interface contacting the skin of a subject having the lesion; and

(b) delivering an effective therapeutic amount of thermal energy to the lesion during a treatment that is sufficient to reduce the size of the lesion by about 100% on or before the 9^th day post treatment.

2. The method of claim 1 wherein the effective therapeutic amount of thermal energy delivered to the lesion is sufficient to reduce the size of the lesion by about 100% on or before the 8^th day post treatment.

3. The method of claim 1 wherein the effective therapeutic amount of thermal energy delivered to the lesion is sufficient to reduce the size of the lesion by about 100% on or before the 7^th day post treatment.

4. The method of claim 1 wherein the effective therapeutic amount of thermal energy delivered to the lesion is sufficient to reduce the size of the lesion by about 100% on or before the 6^th day post treatment.

5. The method of claim 1 wherein the skin lesion is a viral infection.

6. The method of claim 5 wherein the viral infection is a cold sore.

7. The method of claim 1 wherein the skin lesion is a fungal infection.

8. The method of claim 1 wherein the skin lesion is caused by an irritant.

9. The method of claim 8 wherein the irritant is introduced thought the bite of an insect.

10. The method of claim 1 wherein the skin lesion is a bacterial infection.

11. The method of claim 1, wherein the skin lesion is acne.

12. A method for treating skin lesions comprising:

providing an interface for contacting the skin of a subject, wherein the interface is interchangeable or disposable;

providing a heating element in thermal contact with the interface, such that the interface can be heated to a temperature from a range of about 48°

C. to about 53°

C.;

providing a heater control system capable of maintaining the interface at a temperature between about 48°

C. to about 53°

C. for at least 20 seconds; and

providing an input/output system allowing a user to select a pre-programmed setting from a plurality of preprogrammed parameters and to variably adjust a pre-programmed parameter of the setting within a predetermined safe range, wherein each pre-programmed setting provides a treatment optimized for a particular type of skin lesion.

16. The method of claim 12 wherein the heater control system uses a feedback control mechanism involving the use of PID control algorithms.

13. A method for treating skin lesions comprising:

providing an interface for contacting the skin of a subject, wherein the interface has a surface area of less than about 0.5 cm²;

providing a heating element in thermal contact with the interface, such that the interface can be heated to a temperature from a range of about 48°

C. to about 53°

C.;

providing a heater control system capable of maintaining the interface at a temperature between about 48°

C. to about 53°

C. for at least 20 seconds; and

providing an input/output system allowing a user to select a pre-programmed setting from a plurality of preprogrammed parameters and to variably adjust a pre-programmed parameter of the setting within a predetermined safe range, wherein each pre-programmed setting provides a treatment optimized for a particular type of skin lesion.

14. The method of claim 13 wherein the interface is interchangeable or disposable.

15. A method for treating skin lesions comprising:

providing an interface for contacting the skin of a subject, wherein the heater control system is capable of maintaining the interface at a temperature between about 48°

C. to about 53°

C. for at least 150 seconds;

providing a heating element in thermal contact with the interface, such that the interface can be heated to a temperature from a range of about 48°

C. to about 53°

C.;

providing a heater control system capable of maintaining the interface at a temperature between about 48°

C. to about 53°

C. for at least 20 seconds; and

providing an input/output system allowing a user to select a pre-programmed setting from a plurality of preprogrammed parameters and to variably adjust a pre-programmed parameter of the setting within a predetermined safe range, wherein each pre-programmed setting provides a treatment optimized for a particular type of skin lesion.