Hair removal method
Patent 5752948 Issued on May 19, 1998. Estimated Expiration Date: 
June 19, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 19, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3538919 3693623 3769963 3794028 3834391 3900034 Human and animal tissue photoradiation system and method Method for laser depilation Apparatus and process for recurving the cornea of an eye Method and apparatus for photoepiltion InventorsApplicationNo. 492283 filed on 06/19/1995US Classes:606/9, Dermatological606/133Physical removal of hair or hair plugs from skinExaminersPrimary: Dawson, Glenn K.Attorney, Agent or FirmForeign Patent References
International ClassesA61B 017/36A61B 017/50 AbstractThe present invention provides a process for the destruction of unwanted human hair. Hair ducts in a section of skin in which the unwanted hair are growing is contaminated with a contaminant having a high absorption at at least one frequency band of light. The skin section is then illuminated with light at the frequency band of high absorption so as to impact sufficient energy to the contaminant so as to cause death to the hairs growing in the ducts. In a preferred embodiment the contaminant is a mixture of 1 micron graphite particles in mineral oil and each section is illuminated with about 5 laser pulses at 1.06 micron wavelength produced by a Nd:YAG laser, each pulse having an energy density of about 3 Joules/cm2 and a pulse width of about 10 nanoseconds. In another preferred embodiment the hairs in the section of skin being treated are pulled out prior to application of the contaminant so as to provide more space for the contaminant in the hair duct. In still another preferred embodiment a portion of the hairs below the skin surface is removed with a depilatory. In still another preferred embodiment C60 molecules, buckey balls, are the absorbing elements in the contaminant.Other References
Field of SearchBeam energy control or monitoringApplicators Mirror With optical fiber Systems Placed in body Dermatological With beam shaping or redirecting (e.g., lens) With optical fiber Articulated arm Condition responsive Means for removal of skin or material therefrom Physical removal of hair or hair plugs from skin Methods Light application Laser application Lamp and casing | |
