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US 12,491,664 B2Granted
Mold element for manufacturing microstructures
AssigneeLTS Lohmann Therapie-Systeme AG
InventorsAndreas Henning, Sebastian Scherr, Stefan Erlhofer
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Abstract
A mold element, in particular a casting mold for manufacturing microstructures, in particular microneedle arrays, includes a base body. On an upper side of the base body, several depressions for receiving material for manufacturing the microstructure are provided. In order to improve the quality of the microstructure to be manufactured, in particular during a drying process, channels are provided on the upper side of the base body, each of which is connected to at least one of the depressions.
Claims9
A casting mold element for manufacturing microneedle arrays comprising:
- a base body having an upper side and a lower side, wherein the base body is formed from one piece with a negative image of the microneedle array extending away from the upper side of the base body to the lower side;
- and
- depressions extending from the upper side of the base body towards the lower side, the depressions designed to receive material for manufacturing the microneedle array,
- wherein channels are provided on the upper side of the base body, each of which is connected to at least one of the depressions,
- wherein a chamfer is provided in a connection area between a channel and a depression such that the chamfer is curved, with the curvature being convex relative to the channel such that a depth of the channel measured from the upper side increases towards the depression, and
- wherein the depressions are conical in longitudinal direction and the depressions are arranged offset from one another in plan view.
3 more elements
Dependencies are inferred from the claim text.