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Ultrasonic method and apparatus for cosmetic and dermatological applications

  • US 5,618,275 A
  • Filed: 10/27/1995
  • Issued: 04/08/1997
  • Est. Priority Date: 10/27/1995
  • Status: Expired due to Fees
First Claim
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1. The method of facilitating the penetration of a therapeutic agent through a person'"'"'s skin comprising, applying relatively low frequency ultrasonic pressure waves in a range of about 15000 to about 25000 Hz to the skin of sufficiently high intensity to cause cavitation in the skin thereby opening up passageways through the stratum corneum by disordering the lipid bilayers and increasing the permeability of the skin to allow the penetration of a therapeutic agent for a limited time period, terminating the application of low frequency ultrasonic pressure waves to the skin, then promptly applying a therapeutic agent to the skin before the natural function of the person'"'"'s body decreases the permeability of the skin and restores the normal environmental protection of the body;

  • and subsequently applying gentle high frequency noncavitating ultrasonic vibrations to the keratin fibers and the surrounding lipid bilayers of the stratum corneum to augment the body'"'"'s natural function to reestablish the order of the lipid bilayers and to effectively seal the body against further penetration of invading molecules.

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