Discontinuous conductive filler polymer-matrix composites for electromagnetic shielding
US9044593B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2007 |
| Grant date | Jun 2, 2015 |
| Priority date | — |
| Expiry date | Sep 29, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/086
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A medical electrical lead having a conductor assembly covered by an insulating layer, and a shield covering positioned adjacent or proximate to at least a portion of the insulating layer in order to shield the conductor assembly from one or more electromagnetic fields. The shield covering is formed of a polymer-matrix composite. The polymer-matrix composite includes a polymeric resin having discontinuous conductive fillers provided therein. The discontinuous conductive fillers include one or more of nano-sized metal structures and nano-sized non-metallic conductive structures. The nano-sized non-metallic conductive structures can have a coating formed of one or more metals. The nano-sized non-metallic conductive structures can be formed of carbon. In turn, the nano-sized non-metallic conductive structures can include one or more of carbon nanofibers, carbon filaments, carbon nanotubes, and carbon nanoflakes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.