Biodegradable stent having non-biodegradable end portions and mechanisms for increased stent hoop strength
US9326870B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2010 |
| Grant date | May 3, 2016 |
| Priority date | — |
| Expiry date | Jun 6, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2250/0063
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A hybrid stent prosthesis including a biodegradable tubular body, a first non-biodegradable self-expanding ring coupled to a proximal end of the biodegradable body, and a second non-biodegradable self-expanding ring coupled to a distal end of the biodegradable body. The hybrid stent includes a mechanism for longitudinally compressing the tubular body to increase the radial or hoop strength thereof. The longitudinally compressing mechanism may be protruding elements coupled to and extending radially outward from the hybrid stent or elastomeric compression bands or tethers extending between the non-biodegradable rings. The compression bands may be pre-connected to both non-biodegradable rings prior to stent delivery, or may be connected to one non-biodegradable ring prior to insertion and connected to the other non-biodegradable ring in situ.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.