Patent ID: 9597490
Date: 2017-03-21
CPC Classifications: A61M,B81B

Claim:
1. An in-plane microneedle made from a monocrystalline material, comprising: a shaft, comprising at least three walls, each of the at least three walls being <111> crystal planes of the monocrystalline material; and a tip connected to an end of the shaft and comprising at least three walls, each of the at least three walls being <111> crystal planes of the monocrystalline material, wherein at least three of the walls of the tip are adjoining and at least three of the walls of the tip are formed by the same <111> crystal planes as the at least three walls of the shaft, wherein the tip comprises at least two cutting edges, the at least two cutting edges each being formed by lines of intersection where a pair of the <111> crystal planes of the tip adjoin one another, wherein said <111> crystal planes of the tip and the shaft are atomically flat, and wherein said cutting edges are atomically sharp.