Oxygen enhancing membrane systems for implantable devices
US7379765B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2004 |
| Grant date | May 27, 2008 |
| Priority date | — |
| Expiry date | Jul 21, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/14503
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention relates generally to systems and methods for increasing oxygen availability to implantable devices. The preferred embodiments provide a membrane system configured to provide protection of the device from the biological environment and/or a catalyst for enabling an enzymatic reaction, wherein the membrane system includes a polymer formed from a high oxygen soluble material. The high oxygen soluble polymer material is disposed adjacent to an oxygen-utilizing source on the implantable device so as to dynamically retain high oxygen availability to the oxygen-utilizing source during oxygen deficits. Membrane systems of the preferred embodiments are useful for implantable devices with oxygen-utilizing sources and/or that function in low oxygen environments, such as enzyme-based electrochemical sensors and cell transplantation devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.