Composite membrane structure

TWI937908BActive Publication Date: 2026-09-01DARWIN PRECISIONS CORP
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Patent Information

Application Number
TW114123176
Authority / Receiving Office
TW · TW
Patent Type
Patents
Current Assignee / Owner
Filing Date
2025-06-19
Publication Date
2026-09-01
Estimated Expiration
2045-06-18

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  • Figure TWG2TB001908896_001
    Figure TWG2TB001908896_001
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    Figure TWG2TB001908896_002
  • Figure TWG2TB001908896_003
    Figure TWG2TB001908896_003
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Abstract

A composite membrane structure includes a structural membrane and an aqueous membrane. The structural membrane comprises a base layer and a plurality of microneedles. The base layer has opposing first and second surfaces, and the microneedles are disposed on the first surface. The aqueous membrane covers the second surface of the structural membrane and has an aqueous membrane area. The composite structural membrane further includes a fixing sheet, a portion of which is disposed on a portion of the second surface and is covered by the aqueous membrane. The side of the fixing sheet away from the aqueous membrane has a first region and a second region, the first region being in contact with the second surface and the second region not in contact with the second surface. The structural membrane of this composite membrane structure can dissolve rapidly to achieve the release of drugs or active ingredients in a short time.
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Claims

1. A composite membrane structure, comprising: A structural membrane comprising a base layer and a plurality of microneedles, the base layer having a first surface and a second surface opposite to each other, the microneedles being spaced apart on the first surface; an aqueous membrane covering the second surface of the structural membrane, the aqueous membrane having an aqueous membrane area, the ratio of the aqueous membrane area to the area of ​​the second surface being greater than 1.0, wherein the aqueous membrane directly contacts at least a portion of the second surface of the structural membrane, thereby causing the structural membrane to dissolve rapidly; and a fixing sheet, a portion of the fixing sheet being disposed on the second surface of the base layer, and the fixing sheet being covered by the aqueous membrane, wherein the side of the fixing sheet away from the aqueous membrane has a first region and a second region, wherein the first region contacts the second surface, the second region does not contact the second surface, and the ratio of the area of ​​the first region of the fixing sheet to the area of ​​the second surface is greater than or equal to 0.05 and less than 1.

2. The composite membrane structure as described in claim 1, wherein, The first region has a first width, the second region has a second width, and the ratio of the first width to the second width is between 0.1 and 11.

5.

3. The composite membrane structure as described in claim 1, wherein, The ratio of the area of ​​the second surface to the area of ​​the second region of the fixing piece is greater than 0 and less than 1200.

4. The composite membrane structure as described in claim 1, wherein, The height of these microneedles is greater than or equal to 50µm and less than 2000µm.

Citation Information

Patent Citations

  • Microneedle array

    TW202515631A

  • Dissolvable microneedle patch and method to produce dissolvable microneedle patch

    TWI857570B

  • Multilayer microneedle array and method for manufacturing same

    US20240252797A1