Involuted spring stent and graft assembly and method of use
US5782907A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1995 |
| Grant date | Jul 21, 1998 |
| Priority date | — |
| Expiry date | Jul 13, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S623/903
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus and method for forming or shaping an intraluminal stent for low profile delivery into a body lumen. A nickel titanium intraluminal stent has a tubular member formed from a plurality of coils which are bent to form lobe-shaped members, like a cloverleaf, to reduce the profile of the tubular member and form an involuted spring stent. The involuted spring stent will transform to the implanted diameter of the tubular member when exposed to body heat. The involuted spring stent can be attached to a tubular graft, or coated with a polymeric material to form an involuted spring graft, both of which can be used to repair aortic aneurysms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.