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Hollow microneedle patch

  • US 6,603,987 B2
  • Filed: 06/11/2001
  • Issued: 08/05/2003
  • Est. Priority Date: 07/11/2000
  • Status: Expired due to Fees
First Claim
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1. A test strip for use in the determination of the concentration of an a chemical in blood, comprising:

  • a plurality of microneedles, each microneedle being adapted to puncture skin and to draw blood, each microneedle having a generally cylindrical wall and a collection point, the collection point being adapted to receive blood and to direct blood to the test area, the cylindrical wall at the collection point being upwardly sloping in a direction moving radially away from the center of the microneedle; and

    a test area in fluid communication with the microneedles, the test area containing a reagent being adapted to produce a reaction indicative of the concentration of a chemical in blood.

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