Device for delivery of a substance
US8795721B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2007 |
| Grant date | Aug 5, 2014 |
| Priority date | — |
| Expiry date | Feb 25, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M29/02
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A device for delivering a substance in situ in a body comprising at least one permeable expandable container having a first dimension and a second dimension and having contained therein the substance to be delivered; and at least one expandable particle comprising a swellable material contained within the container and capable of expanding when contacted with a fluid; whereby when the device is positioned in situ, bodily fluid permeates the container causing the at least one expandable particle contained therein to swell and the container to expand from the first dimension to the second dimension so that the device remains in situ for a period of time sufficient to achieve the desired delivery of the substance is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.