US5647866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of hair depilation
Assignee: Individual
•
Filing: 1996-05-14
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Granted: 1997-07-15
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Expires: 2016-05-14
Abstract
Abstract The present invention relates to a method of hair depilation comprising the steps of providing an augmentation compound that readily absorbs a selected wavelength of laser light energy, encapsulating the augmentation compound within a liposimal carrier, applying an effective amount of the encapsulated augmentation compound to a region of tissue to be depilated sufficient to cause the compound to accumulate within the dermis surrounding each hair follicle and respective papilla, providing a laser light applicator capable of producing a wavelength of energy matched to the selected wavelength of absorption for the augmentation compound, positioning the laser light applicator above the region of skin treated with the augmentation compound and, applying a pulse of laser energy of the selected wavelength to the region of skin treated with the augmentation compound, the pulse of laser energy having a radiant exposure dose of sufficient energy and duration to cause damage to the hair follicle and papilla so that hair regrowth is prevented and surrounding tissue remains undamaged.
Inventors
- 👤 Nardo Zaias
- 👤 Thomas L. Mehl, Sr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:16
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/18; A61B18/20; A61B18/203; A61B2018/00315; A61B2018/00452; A61B2018/00476; A61N; A61N5/00; A61N5/06; A61N5/0613; A61N5/062
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
170 words
A method of hair depilation, comprising the steps of: a) providing an augmentation compound that readily absorbs a selected wavelength of laser light energy; b) encapsulating the augmentation compound within a liposimal carrier; c) applying an effective amount of the encapsulated augmentation compound to a region of tissue to be depilated suffficient to cause the compound to accumulate within the dermis surrounding each hair follicle and respective papilla: d) providing a laser light applicator capable of producing a wavelength of energy matched to the selected wavelength of absorption for the augmentation compound; e) positioning the laser light applicator above the region of skin treated with the augmentation compound; and f) applying a pulse of laser energy of the selected wavelength with the laser light applicator to the region of skin treated with the augmentation compound, the pulse of laser energy having a radiant exposure dose of sufficient energy and duration to cause damage to the hair follicle and papilla so that hair regrowth is prevented and surrounding tissue remains undamaged.
Claim 2
Independent Claim
170 words
A method of hair depilation, comprising the steps of: a) providing an augmentation compound that readily absorbs a selected wavelength of laser light energy; b) encapsulating the augmentation compound within a liposimal carrier; c) applying an effective amount of the encapsulated augmentation compound to a region of tissue to be depilated suffficient to cause the compound to accumulate within the dermis surrounding each hair follicle and respective papilla: d) providing a laser light applicator capable of producing a wavelength of energy matched to the selected wavelength of absorption for the augmentation compound; e) positioning the laser light applicator above the region of skin treated with the augmentation compound; and f) applying a pulse of laser energy of the selected wavelength with the laser light applicator to the region of skin treated with the augmentation compound, the pulse of laser energy having a radiant exposure dose of sufficient energy and duration to cause damage to the hair follicle and papilla so that hair regrowth is prevented and surrounding tissue remains undamaged.
Claim 3
Dependent Claim
19 words
The method of hair depiliation as set forth in claim 1, wherein: a) the encapsulated augmentation compound is melanin.
Claim 4
Dependent Claim
33 words
The method of hair depiliation as set forth in claim 1, wherein: a) applying the pulse of energy with the laser light applicator through an aperture having diameter of at least three millimeters.
Claim 5
Dependent Claim
41 words
The method of hair depiliation as set forth in claim 1, wherein: a) the applied pulse of laser energy has an exposure dose between about 0.4 J/cm 2 and 10 J/cm 2 for a duration of less than about one microsecond.
Claim 6
Dependent Claim
21 words
The method of depiliation as set forth in claim 1, wherein: a) the laser light applicator is a Q-switched ruby laser.
Claim 7
Dependent Claim
29 words
The method of depiliation as set forth in claim 1, wherein: a) providing a radiant exposure dose is in the range of from about thirty to about forty nanoseconds.
Claim 8
Dependent Claim
29 words
The method of hair depiliation as set forth in claim 1, wherein: a) the wavelength of the laser light applicator is closely matched to the absorbtion spectum of melanin.
Claim 9
Dependent Claim
30 words
The method of hair depiliation as set forth in claim 1, wherein: a) applying the effective amount of encapsulated augmentation compound with a transdermal liposomal coating containing the augmentation compound.
Claim 10
Dependent Claim
37 words
The method of hair depiliation as set forth in claim 1, wherein: a) applying the effective amount of encapsulated augmentation compound through application of a transdermal liposomal coating to the skin followed by application of sonic energy.
Claim 11
Dependent Claim
24 words
The method of hair depiliation as set forth in claim 1, wherein: a) applying the effective amount of encapsulated augmentation compound with transdermal injection.
Claim 12
Dependent Claim
36 words
The method of hair depiliation as set forth in claim 1, and further including the step of: a) moving the laser light applicator while applying the pulse of laser energy to the region of the skin.
Claim 13
Dependent Claim
28 words
The method of hair depiliation as set forth in claim 11, wherein: a) the laser light applicator is moved laterally during application of the pulse of laser energy.
Claim 14
Dependent Claim
30 words
The method of hair depiliation as set forth in claim 1, wherein: a) the laser light applicator is positioned substantially perpendicular to the surface of the skin to be treated.
Claim 15
Dependent Claim
32 words
The method of hair depiliation as set forth in claim 1, wherein: a) the laser light applicator is positioned at an angle of about 60 degrees to the suface of the skin.
Claim 16
Dependent Claim
31 words
The method of hair depiliation as set forth in claim 11, wherein: a) the laser light applicator is pivoted about a horizonatal axis during application of the pulse of laser energy.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-07-14 | 2001-01-13 | 2001-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-07-14 | 2005-01-13 | 2005-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-07-14 | 2009-01-13 | 2009-07-15 | $7700.00 | Window Closed / Lapsed |