Manufacturing method of microneedle array
US-2021001103-A1 · Jan 7, 2021 · US
Mold element for manufacturing microstructures
US12491664B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12491664-B2 |
| Application number | US-202117800679-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 11, 2021 |
| Priority date | Feb 19, 2020 |
| Publication date | Dec 9, 2025 |
| Grant date | Dec 9, 2025 |
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- Title
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Abstract
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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.
First claim
Opening claim text (preview).
The invention claimed is: 1 . 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. 2 . The mold element according to claim 1 , wherein each depression is connected with two or more channels. 3 . The mold element according to claim 1 , wherein at least a part of the channels connects neighboring depressions with each other. 4 . The mold element according to claim 1 , wherein at least a part of the channels tapers from the respective depression. 5 . The mold element according to claim 1 , wherein at least one bar is provided in at least one depression. 6 . The mold element according to claim 5 , wherein at least one bar extends in longitudinal direction of the depressions. 7 . The mold element according to claim 1 , wherein each depression provides the casting mold for a microneedle. 8 . The mold element according to claim 1 , wherein the form of each depression corresponds to the negative image of a microneedle. 9 . The mold element according to claim 1 , wherein the depth of the channel measured from the upper side increases towards a tip of the depression.
Assignees
Inventors
Classifications
Moulds or cores · CPC title
Feeding the material into the mould · CPC title
Methods for producing microneedles · CPC title
- A61M37/0015Primary
by using microneedles · CPC title
for making articles of definite length, i.e. discrete articles · CPC title
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- What does patent US12491664B2 cover?
- 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 provid…
- Who is the assignee on this patent?
- Lts Lohmann Therapie Systeme Ag
- What technology area does this patent fall under?
- Primary CPC classification A61M37/0015. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Dec 09 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).