Methods for electrospin coating and laminating of endoluminal prostheses
US10876222B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2016 |
| Grant date | Dec 29, 2020 |
| Priority date | — |
| Expiry date | Nov 30, 2036 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD10B2509/06
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Endoluminal and other as implantable prostheses are fabricated in electrospinning apparatus including a target and an applicator. A solution comprising a polymer and a solvent is directed to the target with a first electrical potential between the target and the applicator to produce a first set of fibers. The same or another solution is continued to be delivered through the applicator onto the target while applying a second electrical potential to produce a second set of fibers having a second solvent fraction, and the same or different solution may be delivered while applying a third potential difference to produce a laminated structure having at least three layers. By properly controlling the electrical potentials and solvent fractions, an adhesive layer can be formed to serve a glue or adhesive between the inner and outer layers, and a stent or other scaffold may be positioned between the inner and outer layers to form a covered stent or graft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.