Method for non-invasive wrinkle removal and skin treatment

• US RE40,403 E1
• Filed: 06/19/2002
• Issued: 06/24/2008
• Est. Priority Date: 06/11/1998
• Status: Expired due to Term

• Current Assignee: Cynosure Incorporated
• Original Assignee: Cynosure Incorporated
• Inventors: Cho, George, Furumoto, Horace W., Zelickson, Brian D.
• Primary Examiner(s): FARAH, AHMED M
• Application Number:
  US10/176,394
• Time in Patent Office: 2,197 Days
• Field of Search: 607 88- 93, 606/2, 606/3, 606 8- 10, 606/13, 606/16, 606/17, 372/30, 372/53
• US Class Current: 607/89
• CPC Class Codes: A61B 18/203 applying laser energy to the outside of the body
• CPC Class Codes: A61B 2018/00452 Skin
• CPC Class Codes: A61B 2018/0047 Upper parts of the skin, e.g. skin peeling or treatment of wrinkles

Abstract

A method for the treatment of wrinkles on human skin, by stimulating collagen growth beneath the epidermis layer, comprising the steps of: arranging a pulsed dye laser generator in light communication with a pulsed dye laser delivery device. The pulsed dye laser delivery device is applied against tissue having wrinkles. The pulsed dye laser generator generates a pulsed dye laser light. A pulsed dye laser light from the pulsed dye laser delivery device is directed onto the tissue, to reach hemoglobin in a collagen layer up to about 1.2 mm. beneath the surface of the tissue to effect growth changes therein.

Claims

1. A method for the treatment of wrinkles on human skin, by stimulating collagen growth beneath the epidermis layer, comprising the steps of:

arranging a pulsed dye laser generator in light communication with a pulsed dye laser delivery device;

applying said pulsed dye laser delivery device against tissue having wrinkles;

generating a pulsed dye laser light by said pulsed dye laser; and

directing said pulsed dye laser light from said pulsed dye laser delivery device onto said tissue, to reach hemoglobin in a collagen layer beneath the surface of said tissue;

adjusting said range of pulsed dye laser light generated to a wavelength of about 585 nanometers;

generating said pulsed dye laser at a pulse width of about 450 microseconds;

directing said pulsed dye laser light at the tissue at a target spot diameter of about 10-mm; and

maintaining a fluence of said pulsed dye laser light of less than 5 Joules per square cm.

2. A method for the treatment of wrinkles on human skin, by stimulating collagen growth beneath the epidermis layer, comprising the steps of:

arranging a pulsed dye laser generator in light communication with a pulsed dye laser delivery device;

applying said pulsed dye laser delivery device against tissue having wrinkles;

generating a pulsed dye laser light by said pulsed dye laser; and

directing said pulsed dye laser light from said pulsed dye laser delivery device onto said tissue, to reach hemoglobin in a collagen layer beneath the surface of said tissue; and

tuning said pulsed dye laser to deliver a laser light at a wavelength having a range of about 585 nanometers;

generating said pulsed dye laser at a pulse width of about 450 microseconds; and

energizing said collagen down to a depth of about 1.0-mm to about 1.2 mm. below the surface of the skin by said pulsed dye laser.

3. A method for the treatment of wrinkles on human skin, by stimulating collagen growth beneath the epidermis layer, comprising the steps of:

arranging a pulsed dye laser generator in light communication with a pulsed dye laser delivery device;

applying the pulsed dye laser delivery device against tissue having wrinkles;

generating a laser light pulse with the pulsed dye laser generator, the laser light pulse having a wavelength in a range of about 570 nanometers to about 650 nanometers, a pulse width in a range of 150 microseconds to about 1500 microseconds, and a fluence of less than about 5 Joules per cm²; and

directing the laser light pulse from the pulsed dye laser delivery device onto the tissue, to reach hemoglobin in a collagen layer beneath the surface of the tissue.

4. The method of claim 3, wherein the laser light pulse energizes the collagen down to a depth of about 1.0 mm to about 1.2 mm below the surface of the skin.

5. The method of claim 3, wherein the pulsed dye laser delivery device comprises a handpiece connected by an optical fiber or waveguide to the pulse dye laser generator.

6. The method of claim 3, wherein the laser light pulse has a wavelength of about 585 nanometers.

7. The method of claim 3, wherein the laser light pulse has a pulse duration of about 450 microseconds.

8. The method of claim 3, wherein the laser light pulse has a fluence of about 3 Joules per cm².