P
USRE40403EExpiredUtilityPatentIndex 99

Method for non-invasive wrinkle removal and skin treatment

Assignee: CYNOSURE INCPriority: Jun 11, 1998Filed: Jun 19, 2002Granted: Jun 24, 2008
Est. expiryJun 11, 2018(expired)· nominal 20-yr term from priority
Inventors:CHO GEORGEFURUMOTO HORACE WZELICKSON BRIAN D
A61B 2018/0047A61B 2018/00452A61B 18/203
99
PatentIndex Score
129
Cited by
49
References
8
Claims

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

exact text as granted — not AI-modified
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 cm   2   ; 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 cm 2   .

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