公开(公告)号：US20250090822A1

公开(公告)日：2025-03-20

申请号：US18292103

申请日：2022-08-19

Applicant: HISAMITSU PHARMACEUTICAL CO., INC.

Inventor： Tetsuji KUWAHARA ,  Keiichiro TSURUSHIMA ,  Masafumi ONO ,  Masato WAKAMATSU ,  Tetsuro TATEISHI

IPC: A61M37/00 ,  A61K9/00 ,  A61K47/32

Abstract: A microneedle patch according to one example includes a backing, an adhesive layer provided on the main surface of the backing, and a microneedle array at least a part of which is positioned within the adhesive layer, wherein the adhesive layer includes a water-soluble polymer and water, and a loss tangent of the adhesive layer under measurement conditions of an environmental temperature of 25° C. and a frequency of 1 Hz is 0.20 to 0.41.

公开(公告)号：US20190083770A1

公开(公告)日：2019-03-21

申请号：US15756234

申请日：2016-08-19

Applicant: HISAMITSU PHARMACEUTICAL CO., INC.

Inventor： Shinpei NISHIMURA ,  Seiji TOKUMOTO ,  Masafumi ONO

IPC: A61M37/00

Abstract: An applicator according to one embodiment includes a housing having a tubular shape with one closed end, and configured to house an elastic member and a piston plate for transmitting biasing force of the elastic member to the microneedles, and release means configured to release the piston plate engaged in a manner resisting against the biasing force of the elastic member in the housing, to cause the piston plate to move toward an opening of the housing along an axial direction of the housing. The release means is configured, when the release means releases the engagement of the piston plate by moving toward the housing in the axial direction, to transmit force in a direction toward the opening to the housing.