Biocompatible film with variable cross-sectional properties
US8617589B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2012 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Aug 13, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2013/00906
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A biocompatible film includes a single layer having a plurality of components, at least one of the plurality of components having a predetermined non-uniform distribution in the thickness direction of the single layer. The at least one of the plurality of components that has a non-uniform distribution in the thickness direction of the single layer may have a substantially uniform distribution in the longitudinal and lateral directions of the single layer. The biocompatible film can be made by depositing a fluid composition including a film forming material and at least one other component immiscible with the film forming material and having a density different than the film forming material into a single layer, and drying the single layer such that the at least one other component has a predetermined non-uniform distribution in the thickness direction of the single layer after drying.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.