公开(公告)号：US20170304602A1

公开(公告)日：2017-10-26

申请号：US15516215

申请日：2015-11-13

Applicant: L'OREAL

Inventor： Shu LIU ,  Kazuyuki OHNISHI

IPC: A61M37/00 ,  A61K8/81 ,  A61K8/86 ,  A45D44/22 ,  A61K8/73 ,  A61Q19/08 ,  B29L31/00 ,  B29C39/02 ,  B29K33/00 ,  B29K71/00 ,  B29K105/00

CPC classification number: A61M37/0015 ,  A45D44/22 ,  A61K8/735 ,  A61K8/8164 ,  A61K8/85 ,  A61K8/86 ,  A61K9/0021 ,  A61K47/32 ,  A61K47/36 ,  A61K2800/805 ,  A61K2800/91 ,  A61M2037/0046 ,  A61M2037/0053 ,  A61M2205/0216 ,  A61M2207/00 ,  A61Q19/08 ,  B29C39/026 ,  B29K2033/00 ,  B29K2071/02 ,  B29K2105/0085 ,  B29L2031/7544

Abstract: The present invention relates to a microneedle comprising a plurality of portions, wherein the plurality of portions comprise a distal end portion and a proximal end portion, at least two of the plurality of portions are made of different polymers, and the distal end portion is made of at least one polymer with high swellability and high viscoelasticity.