Patent ID: 7901445
Filing Date: 2011-03-08
Classification: A61B,A61F

Abstract:
1. A stent comprising a generally tubular walled structure having a substantial un-occluded opening in the wall of the stent, where said opening spans a substantial arcuate segment of the stent wherein said stent further comprises a sheet of resilient material having a first edge, a second edge, a third edge, a fourth edge and a spine extending from the third edge to the fourth edge, said spine being generally parallel to the first and second edges; wherein the first edge has a first rectangular-shaped open section disposed within the first edge, said first rectangular-shaped open section sized and dimensioned to extend from the spine to the first edge, and to a first distance from the third edge and a second distance from the fourth edge; wherein the second edge has a second rectangular-shaped open section disposed within the second edge, said second rectangular-shaped open section sized and dimensioned to extend from the spine to the second edge, and to the first distance from the third edge and the second distance from the fourth edge; wherein the sheet of resilient material is tightly rolled about an axis parallel to the first and second edges to form a tightly rolled stent, said tightly rolled stent having a diameter less than 1 mm and expandable to a diameter of approximately 1 mm; wherein the tightly rolled stent is expandable to a diameter of approximately 1 mm to provide slight compliance mismatch with an intra-cranial blood vessel having an internal diameter of approximately 1 mm; and when expanded the stent comprises two rolls with a plurality of layers, said rolls connected by the spine.