Patent ID: 6908453
Filing Date: 2005-06-21
Classification: A61B,A61M

Abstract:
1. A microncedle device comprising: a substrate comprising a first major surface; at least one microneedle projecting from the first major surface of the subsrrate, the at least one microneedle comprising a base proximate the first major surface of the substrate and a tip distal from the base; a cover comprising a first side facing the first major surface of the substrate and a second side facing away from the substrate, wherein the at least one microneedle penetrates through the first side and the second side of the cover; a capillary volume located between the first major surface of the substrate and the first side of the cover; wherein the capillary volume contacts at least a portion of the base of the at least one microneedle, and a channel formed in an outer surface of the at least one microneedle wherein the channel extends from the base towards the tip of the at least one microneedle.