Abstract: The purpose of the present invention is to provide a needle hub unit and the manufacturing method thereof, that enables injection with the least possible waste of a medicinal solution. The present invention is provided with a needle hub, a recess provided in the needle hub and into which a tip portion of an injection cylinder is inserted, an elastic body internally provided in the recess and fills a gap between the tip of the injection cylinder and the recess, and an injection needle inserted into the needle hub and penetrating through the elastic body, whereby the injected medicinal solution passes only through the injection needle, thus the remaining of the medicinal solution in the needle hub is prevented.

Abstract: The purpose of the present invention is to provide an injection needle unit, provided with a plurality of needle pieces, with a simple structure and capable of easy manufacturing. The injection needle unit provided with: a needle base provided with a medicinal solution accommodation space; and a plurality of needle pieces, each of which is attached to the needle base, and a base end of the needle piece communicates to the medicinal solution accommodation space. The needle base is composed of: a needle base body, provided with an opening for opening the medicinal solution accommodation space in the direction orthogonal to the axis directions of the needle pieces; and a lid for enclosing the opening of the needle base body.

Abstract: The purpose of the present invention is to provide an injection needle and an injection device which are capable of adjusting the puncture depth of a needle. The present invention is equipped with: a needle; a needle base holding the needle such that the needle protrudes from the distal end side; and an adjuster provided on the outer periphery of the needle base so as to be movable in the axial direction of the needle base. By adjusting the axial-direction position of the adjuster, the protrusion length of the needle can be adjusted. Consequently, the puncture depth of the needle can be adjusted, and there is no need to prepare a plurality of type of injection needles having different protrusion lengths.

Abstract: The invention relates to a jig for microneedle array placement that is provided with a main jig body with through holes through which the microneedles of the microneedle array will pass and a guiding part that guides the microneedle array to be incorporated into the main jig body and leads the microneedles into the through holes, and a microneedle array device using the jig for microneedle array placement. The invention prevents the deformation of the skin surface during puncture and allows penetration of the microneedles to the prescribed depth under the skin.

Abstract: A microneedle array includes a microneedle unit that includes microneedles; and a microneedle unit support member that includes an opening, guides both ends of the microneedle unit through inclined grooves, and arranges tips of the microneedles so as to project through the opening in an inclined manner.

Abstract: The objective of the present invention is to provide: a microneedle array which is capable of inserting a microneedle into the skin at an oblique angle and thereby, upon injection with the microneedle, is capable of both relieving the patient's pain and preventing a drug solution from leaking; and a microneedle array device which comprises the microneedle array. To this end, a microneedle array comprises: a microneedle unit that includes microneedles; and a microneedle unit support member that includes an opening, guides both ends of the microneedle unit through inclined grooves, and arranges tips of the microneedles so as to project through the opening in an inclined manner.

Abstract: The invention relates to a jig for microneedle array placement that is provided with a main jig body with through holes through which the microneedles of the microneedle array will pass and a guiding part that guides the microneedle array to be incorporated into the main jig body and leads the microneedles into the through holes, and a microneedle array device using the jig for microneedle array placement. The invention prevents the deformation of the skin surface during puncture and allows penetration of the microneedles to the prescribed depth under the skin.