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Ultrasonic cosmetic treatment device

  • US 6,176,840 B1
  • Filed: 07/31/1998
  • Issued: 01/23/2001
  • Est. Priority Date: 08/11/1997
  • Status: Expired due to Fees
First Claim
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1. An ultrasonic cosmetic treatment device for treating the skin, comprising:

  • an ultrasonic vibrator probe that contacts a skin;

    an ultrasonic oscillation circuit that moves the ultrasonic vibrator probe;

    a detection circuit that converts an impedance of the ultrasonic vibrator into an envelope voltage of an oscillation level and detects contact and non-contact of the ultrasonic vibrator probe with the skin by comparing the envelope voltage of the oscillation level with a reference voltage;

    an oscillation control circuit that changes an oscillation output level applied to the ultrasonic vibrator probe when the detection circuit detects a change between the contact and non-contact of the ultrasonic vibrator probe with the skin.

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