Gastroretentive drug delivery device having expandable structure and manufacturing method therefor
US11511093B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 23, 2020 |
| Grant date | Nov 29, 2022 |
| Priority date | — |
| Expiry date | May 28, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2210/1053
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present disclosure provides a gastroretentive drug delivery device having an expandable structure. The drug delivery device includes: a capsule body; an arm moving part movable within the capsule body; an elastic body positioned between one end of the capsule body and the arm moving part and acting to move the arm moving part toward the other end of the capsule body; an arm support part movable within the capsule body; a capsule cap configured to engage the other end of the capsule body; a rail formed within the capsule body; and an arm configured to be unfolded by longitudinal movement of the arm moving part and move along the rail. A disintegrable immediate-release formulation is positioned between the arm moving part and the arm support part. A disintegrable sustained-release formulation is positioned between the arm support part and the capsule cap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.