Method of making implantable devices with reduced needle puncture site leakage
US8906087B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2011 |
| Grant date | Dec 9, 2014 |
| Priority date | — |
| Expiry date | Sep 30, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2597/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A prosthetic implantable device that offers a reduction in fluid loss when the device is punctured, such as by a dialysis needle or suture needle, and the needle is subsequently removed. The device may be made to be thin and flexible, and with longitudinal stretch, in order that it also offers good handling and kink resistance to a surgeon. While the device is preferably of tubular form, flat sheets or other forms may also be made. The device includes inner and outer layers of a porous material having a microstructure of nodes interconnected by bent fibrils, and having void spaces between adjacent bent fibrils. The inner and outer layers are joined by an elastomeric adhesive that may interpenetrate the void spaces of the adjacent surfaces of the inner and outer layers, that is, the inner surface of the outer layer and the outer surface of the inner layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.