Methods of fabricating microneedles with bio-sensory functionality
First Claim
1. A method of fabricating a microneedle, said method comprising:
- (a) forming at least one recess in a substrate, the at least one recess comprising an apex;
(b) forming an electrically conductive seed layer on the substrate including the at least one recess;
(c) forming at least one electrically nonconductive pattern on a portion of the seed layer, the at least one nonconductive pattern being a pattern for a sensory area;
(d) plating an electrically conductive material on the seed layer to create a plated layer with an opening that exposes a portion of the nonconductive pattern; and
(e) separating the plated layer from the seed layer and the at least one nonconductive pattern to release a hollow microneedle comprising a tip and at least one sensory area.
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Abstract
A method of fabricating a microneedle is disclosed. The method includes forming at least one recess in a substrate, the at least one recess comprising an apex, forming an electrically seed layer on the substrate including the at least one recess, forming at least one electrically nonconductive pattern on a portion of the seed layer, the at least one nonconductive pattern being a pattern for a sensory area, plating an electrically conductive material on the seed layer to create a plated layer with an opening that exposes a portion of the nonconductive pattern and separating the plated layer from the seed layer and the at least one nonconductive pattern to release a hollow microneedle comprising a tip and at least one sensory area.
44 Citations
22 Claims
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1. A method of fabricating a microneedle, said method comprising:
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(a) forming at least one recess in a substrate, the at least one recess comprising an apex; (b) forming an electrically conductive seed layer on the substrate including the at least one recess; (c) forming at least one electrically nonconductive pattern on a portion of the seed layer, the at least one nonconductive pattern being a pattern for a sensory area; (d) plating an electrically conductive material on the seed layer to create a plated layer with an opening that exposes a portion of the nonconductive pattern; and (e) separating the plated layer from the seed layer and the at least one nonconductive pattern to release a hollow microneedle comprising a tip and at least one sensory area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A hollow plated microneedle comprising:
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a base; a hollow tip; an opening laterally offset from the tip; and at least one sensory area. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A method of performing a biosensory function comprising:
utilizing a hollow microneedle to perform the biosensory function. - View Dependent Claims (17, 18, 19, 20, 21)
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22. A hollow plated microneedle comprising:
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a base; a hollow tip; an opening laterally offset from the tip; and micro/nano porous channels.
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Specification