Endovascular stent and delivery system
US5041126A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 14, 1988 |
| Grant date | Aug 20, 1991 |
| Priority date | — |
| Expiry date | Sep 14, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2/958
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A wire stent for insertion and expansion into a passageway comprises a plurality of curved sections that are formed into a generally circular configuration. Adjacent curved sections are joined by a bend or cusp, so that a series of alternating opposing loops are formed. The wire stent as formed has a cylindrical shape with a longitudinal opening through which a folded balloon catheter is inserted. The opposing loops are tightly contracted about the catheter so that the cylindrical shape has an overlapping region in which portions of adjacent loops longitudinally overlap. The loops are arranged so that when the balloon catheter is inflated, adjacent loops diverge circumferentially relative to each other, thereby decreasing the overlapping region while increasing the diameter of the cylindrical shape. As the diameter of the cylindrical shape increases, the wire stent contacts the surface of a passageway in which the stent is inserted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.