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Laser dermablator and dermablation

  • US 6,165,170 A
  • Filed: 01/29/1998
  • Issued: 12/26/2000
  • Est. Priority Date: 01/29/1998
  • Status: Expired due to Term
First Claim
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1. A surgical system for removing skin, comprising:

  • a pulsed light source capable of delivering a fluence F exceeding an ablation threshold fluence Fth ;

    a second light source illuminating the skin;

    a control mechanism, coupled to the pulsed light source, for directing light from the pulsed light source to locations on the skin and controllably ablating a skin location to a desired depth, said control mechanism directing the pulsed light source to deliver multiple pulses of directed light at the locations on the skin and repeatedly scanning the directed light across a designated area of the skin; and

    a feedback mechanism coupled to the control mechanism, the feedback mechanism comprising at least one photodetector having an input and an output;

    the input receiving light from the second light source that is scattered/reflected/flouresced by the skin; and

    the output providing a feedback signal to the control mechanism, which is adapted for detecting a change in the spectral shape or brightness of the light scattered/reflected/flouresced by the skin and causing the pulsed light source to be inhibited at a given skin location, in response to the change.

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