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Skin-piercing microprojections having piercing depth control

  • US 20030181936A1
  • Filed: 12/20/2002
  • Published: 09/25/2003
  • Est. Priority Date: 12/20/2001
  • Status: Abandoned Application
First Claim
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1. A device for forming a plurality of microcuts in animal skin, the microcuts having a predetermined depth of penetration, said device comprising:

  • a) a first member having a plurality of skin piercing microprojections extending therefrom, the microprojections being adapted to pierce the skin to a predetermined depth of penetration of less than about 500 microns;

    b) each of the microprojections comprising a base, a penetrating portion having a length L2, a tip, an edge, a face and a length, L1, that is a distance from the base to the tip of the microprojection, said length being substantially longer than said predetermined depth; and

    c) a piercing depth limiter associated with one or more of the microprojections and positioned at a predetermined location between the tip and the base, wherein the limiter restricts the piercing of the microprojections to about the predetermined depth.

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