US 11,717,657 B2
Dermal adhesive patch
In Yong Seo, Seoul (KR); and Ji Hyun Lee, Incheon (KR)
Assigned to AMOLIFESCIENCE CO., LTD., Seoul (KR)
Appl. No. 16/468,505
Filed by AMOLIFESCIENCE CO., LTD., Seoul (KR)
PCT Filed Dec. 8, 2017, PCT No. PCT/KR2017/014364
§ 371(c)(1), (2) Date Jun. 11, 2019,
PCT Pub. No. WO2018/110907, PCT Pub. Date Jun. 21, 2018.
Claims priority of application No. 10-2016-0168638 (KR), filed on Dec. 12, 2016.
Prior Publication US 2020/0086099 A1, Mar. 19, 2020
Int. Cl. A61M 35/00 (2006.01); A61J 1/06 (2006.01); A45D 44/00 (2006.01)
CPC A61M 35/10 (2019.05) [A45D 44/002 (2013.01); A61J 1/067 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A dermal adhesive patch that is configured to be attached to skin to which an ampoule containing a mixing ingredient, a drying ingredient, a viscosity control ingredient, and a moisturizing ingredient is applied, the patch comprising:
a support body; and
a membrane layer formed as a nanofiber web having micropores with an average pore diameter of 10 μm or less and configured to block moisture and to allow air to pass through the membrane layer, wherein the membrane layer is detachably laminated on one surface of the support body,
wherein the membrane layer is configured to be attached to a user's skin in a state in which the support body is removed,
wherein the membrane layer includes a shape-retaining layer and a medicinal solution layer,
wherein the shape-retaining layer is laminated on the one surface of the support body and is formed as a first nanofiber web which is formed to have micropores by electrospinning a first spinning solution, in which a synthetic polymer which is a fiber-forming polymer that is not dissolved by a first solvent contained in the ampoule and a second solvent are mixed,
wherein the medicinal solution layer which is laminated on one surface of the shape-retaining layer and is formed as a second nanofiber web which is formed to have micropores by electrospinning a second spinning solution, in which a functional component, a water-soluble polymer and a third solvent are mixed so as to be released by the first solvent contained in the ampoule, and
wherein the shape-retaining layer having the synthetic polymer which is a fiber-forming polymer is not dissolved by the first solvent contained in the ampoule and maintains the form of the first nanofiber web having micropores, and
wherein the shape-retaining layer is a protective layer configured to protect the medicinal solution layer released by the first solvent contained in the ampoule while being maintained in the nanofiber web form having micropores.