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Patent Searching and Data


Title:
LAYERED TRANSDERMAL PATCH
Document Type and Number:
WIPO Patent Application WO/2021/079795
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a novel transdermal patch having superior medicine-retaining properties and excellent adhesiveness to skin. One example of the present invention is a layered transdermal patch A comprising, layered in the given order: a release layer 1; a medicine layer 2; a medicine support layer 3 having an elastic property; an adhesive layer 4; and an adhesive support layer 5. The layered patch is characterized in that: the outer edges of the release layer, the adhesive layer, and the adhesive support layer are more on the outside than the outer edges of the medicine layer and the medicine support layer; there is an empty space 6 surrounded by the outer edges of the medicine layer and the medicine support layer and the inner sides of the release layer and the adhesive layer; and at least a cross-sectional view of the space 6 taken along a longitudinal direction centerline (X-X line) and along a transverse direction centerline (Y-Y line) of a plan view of the patch has an area of 0.3 mm2 or greater. This layered patch A has excellent medicine-retraining properties and adhesiveness to skin.

Inventors:
MIWA YASUSHI (JP)
HAMAMOTO HIDETOSHI (JP)
Application Number:
PCT/JP2020/038707
Publication Date:
April 29, 2021
Filing Date:
October 14, 2020
Export Citation:
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Assignee:
MEDRX CO LTD (JP)
International Classes:
A61K9/70; A61K31/19; A61K31/433; A61K47/06; A61K47/10; A61K47/14; A61K47/32; A61K47/34; A61P21/02; B32B5/02; B32B27/00
Domestic Patent References:
WO2004089347A12004-10-21
WO2015133329A12015-09-11
WO2016136732A12016-09-01
WO2009119673A12009-10-01
WO2019151423A12019-08-08
WO2015087927A12015-06-18
WO2015133329A12015-09-11
Foreign References:
JPS5810727U1983-01-24
JPH06329534A1994-11-29
Attorney, Agent or Firm:
SHIMIZU Naoto (JP)
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