Stent fabrication via tubular casting processes
US9908143B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2012 |
| Grant date | Mar 6, 2018 |
| Priority date | — |
| Expiry date | Mar 6, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2210/0076
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Tubular casting processes, such as dip-coating, may be used to form substrates from polymeric solutions which may be used to fabricate implantable devices such as stents. The polymeric substrates may have multiple layers which retain the inherent properties of their starting materials and which are sufficiently ductile to prevent brittle fracture. Parameters such as the number of times the mandrel is immersed, the duration of time of each immersion within the solution, as well as the delay time between each immersion or the drying or curing time between dips and withdrawal rates of the mandrel from the solution may each be controlled to result in the desired mechanical characteristics. Additional post-processing may also be utilized to further increase strength of the substrate or to alter its shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.