Patent ID: 6379324
Filing Date: 2002-04-30
Classification: A61B,A61M,B29L,B81B,B81C

Abstract:
A structure comprising a base element and plurality of microneedles formed thereon, wherein said base element has a first side and a second side; wherein said plurality of microneedles comprises a plurality of hollow elements which project from the second side of said base element along a longitudinal axis that is at an angle with respect to said base element; wherein at least one of said longitudinal axes of said microneedles is in alignment with one of a plurality of first openings in the second side of said base element; wherein said hollow elements of said plurality of microneedles allow liquid to flow therethrough between a plurality of second openings at a distal end of said hollow elements and said first openings at the second side of said base element; and a container structure comprising:(a) a reservoir capable of holding a liquid, (b) a first electrode proximal to said reservoir, (c) an electrical power source that is in communication with said electrode, and (d) a second electrode proximal to said reservoir at a location different than said first electrode, said second electrode detecting an electrical signal in the manner of a bioelectrochemical sensor.