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US 10,898,703 B2Granted
Microneedle template and microneedle prepared using the same
AssigneeS-Skin. Co., Ltd.
InventorsJeong Gun Lee, Shin Hee Cho, Bo Young Shin
Life of this patent
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Abstract
Provided are a microneedle template including: a substrate on which at least one microneedle shapes are formed; and a diamond layer formed on the surface of the at least one microneedle shapes, a method for preparing the microneedle template, a microneedle prepared using the microneedle template, and a method for preparing the microneedle.
Claims11
A microneedle template, comprising:
- a substrate on which at least one microneedle shape is formed;
- and
- a diamond layer formed on the surface of the at least one microneedle shape,
- wherein a thickness of the diamond layer is 10 μm or less,
- wherein the cross section of each of the at least one microneedle shapes consists of a combination of a tetragonal shape and a hexagonal shape,
- wherein a portion having the hexagonal cross section is located where the at least one microneedle shape is in contact with the substrate and a portion having the tetragonal cross section is located at the end of the at least one microneedle shape,
- wherein, in each of the at least one microneedle shapes, a ratio of the length of the portion having the hexagonal cross section to the length of the portion having the tetragonal cross section is from 1:0.1 to 1:2, and in each of the at least one microneedle shapes, the length of the microneedle shape consists of the length of the portion having the hexagonal cross section and the length of the portion having the tetragonal cross section, and
- wherein, in each of the at least one microneedle shapes, a ratio of the maximum length of a diagonal line of the tetragonal cross section to the maximum length of a diagonal line of the hexagonal cross section is from 1:2 to 1:10.
5 more elements
A method for preparing a microneedle template, comprising:
- forming at least one microneedle shape on a substrate;
- and
- forming a diamond layer on the surface of the at least one microneedle shape,
- wherein a thickness of the diamond layer is 10 μm or less,
- wherein the cross section of each of the at least one microneedle shapes consisting of a combination of a tetragonal shape and a hexagonal shape,
- wherein a portion having the hexagonal cross section is located where the at least one microneedle shape is in contact with the substrate and a portion having the tetragonal cross section is located at the end of the microneedle shape,
- wherein, in each of the at least one microneedle shapes, a ratio of the length of the portion having the hexagonal cross section to the length of the portion having the tetragonal cross section is from 1:0.1 to 1:2, and in each of the at least one microneedle shapes, the length of the microneedle shape consists of the length of the portion having the hexagonal cross section and the length of the portion having the tetragonal cross section, and
- wherein, in each of the at least one microneedle shapes, a ratio of the maximum length of a diagonal line of the tetragonal cross section to the maximum length of a diagonal line of the hexagonal cross section is from 1:2 to 1:10.
5 more elements
Dependencies are inferred from the claim text.