Surface configuration of implantable devices to modify biological activity and related method
US9795388B1 · kind B1 · utility
Inventor
Key dates
| Filing date | May 13, 2011 |
| Grant date | Oct 24, 2017 |
| Priority date | — |
| Expiry date | Jan 5, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2/88
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to an aneurysm coil that is made up of a single wire of a noncircular cross-sectional shape. The wire is coiled in a helical configuration to have an outer surface and an inner surface. The outer surface of the wire does not have a round outer surface. The aneurysm coil of the present invention is designed to encourage cellular adhesion and tissue growth along the coil surface by employing a wire having a substantially non-circular cross sectional area, such as a T shape, a triangle, square, rectangle, oval, pentagon, hexagon, septagon, octagon, star, rhombus, as well as a variety of non-geometric shapes. The use of a wire having such a cross sectional shape promotes endothelial cells to adhere and grow within the gaps created by the juxtaposition of the wire forming a coil, thus anchoring the coil to its intended location, promoting thrombosis, endothelial growth across the opening of the aneurysm, and eventual healing of the aneurysm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.