Microneedle, Mold for Production of Microneedle Array, and Production Method of Microneedle Array Using Same

A production method of a microneedle array, the microneedle array composed of a base and a plurality of microneedles arranged on a surface of the base, the microneedle including a long needle-shaped body protruded from the base and barb or wedge shapes each provided in an acute angle toward the base along a circumference of the body, the method comprising:

• producing a preliminary mold provided with two-dimensional patterns having a shape of the microneedle array therein;
• producing microneedle array molds having a three-dimensional shape by expanding air inside the patterns having a two-dimensional shape to deform the patterns having the two-dimensional shape into a cast form having the three-dimensional shape;
• and
• after pouring a biodegradable resin into the microneedle array molds and solidifying the biodegradable resin, completing the microneedle array by removing the microneedle array molds.

A mold for production of a microneedle array, the microneedle array implemented by allowing microneedles to be arranged in one line and each one end thereof to be connected to a base member, the microneedle including a body having a long length in a needle-shape having a peak at an opposite end and a barb or wedge shape provided in an acute angle toward the one end of the body on a circumference of the body, the mold comprising:

• a first plate member engraved with patterns having a shape of the microneedle array, on one surface thereof;
• and
• a second plate member bonded with the one surface of the first plate member, wherein
• the second plate member or the first plate member is made of a member that may be plastically deformed, so that when air expands in the patterns, the two-dimensional patterns are deformed into the three-dimensional shapes, whereby a hollow space having the shape of the microneedle array is provided.