Shotaro OGAWA,Aya MOCHIZUKI,Ryoichi NEMORI,Yanlong CHE
申请号：
US13247476
公开号：
US20120078189A1
申请日:
2011.09.28
申请国别(地区):
US
年份:
2012
代理人:
摘要：
A needle array transdermal absorption sheet to be attached onto a skin for supplying a drug into the skin, includes: a plurality of needle portions each having a tapered shape, each of the needle portions including a needle having a conical or pyramidal shape and a body part which has a columnar shape and whose end surface is connected to a base of the needle a sheet portion having a flat-plate shape and a plurality of frustum portions each having a frustum shape, the frustum portions which are arranged on a surface of the sheet portion in a manner that perimeters of larger bases of adjacent frustum portions are in contact with each other on the surface of the sheet portion, and smaller bases of which are respectively connected to the body parts of the needle portions.
