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Laser treatment method for removing pigmentations, lesions, and abnormalities from the skin of a living human

  • US 5,217,455 A
  • Filed: 08/12/1991
  • Issued: 06/08/1993
  • Est. Priority Date: 08/12/1991
  • Status: Expired due to Term
First Claim
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1. A laser treatment method for removing a tattoo from the skin of a living human, said method comprising the steps of:

  • irradiating on a first occasion a chosen treatment site on the skin of a living human of about 1-100 millimeters in diameter with a beam of pulsed light from a laser delivery system, said pulsed light having a wavelength from about 600-1,100 nanometers, fluences of about 1-20 Joules per square centimeter, and a pulse duration of about 10-300 nanoseconds;

    maintaining said irradiation to disrupt the tattoo on the chosen treatment site on the skin of the living human until a color change endpoint on the skin surface is achieved by said laser light treatment while largely avoiding the destruction of normal skin structures and cells;

    allowing the skin at said irradiated treatment site to heal for a time period not less than about 7 days and not more than about 70 days; and

    thenirradiating on at least one subsequent occasion the chosen treatment site on the skin of the living human with another pulsed beam of laser light having a wavelength from about 600 to 1,100 nanometers, fluences of about 1-20 Joules per square centimeter, and a pulse duration of about 10-300 nanoseconds, said subsequent irradiation occasion being repeated as necessary to achieve substantial clearance of the chosen treatment site on the skin.

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