Deployable stent
First Claim
1. A stent comprising a biocompatible sheet arranged as a tube folded with a pattern of folds allowing the stent to be collapsed for deployment, the pattern of folds comprising a unit cell repeated over at least a portion of the sheet, the unit cell comprising:
- an outer circumferential edge of folds of a first type comprising a pair of longitudinal edge folds extending along the tube and transverse edge folds extending around the tube;
a central longitudinal fold extending along the tube between the transverse edge folds; and
angular folds extending from each intersection of a longitudinal edge fold with a transverse edge fold to the central longitudinal fold.
2 Assignments
0 Petitions
Accused Products
Abstract
A stent 1 comprising a sheet 2 of biocompatible material arranged as a tube and having a pattern of folds allowing the stent to be collapsed for deployment. The pattern of folds comprises a unit cell repeated over the sheet 2. A variety of different unit cells 3 are described. The pattern of folds may progress helically around the tube which assists in implantation by synchronising deployment. The stent 1 prevents restenosis because it is formed of a continuous sheet 2, and allows slippage to be minimised.
59 Citations
31 Claims
-
1. A stent comprising a biocompatible sheet arranged as a tube folded with a pattern of folds allowing the stent to be collapsed for deployment, the pattern of folds comprising a unit cell repeated over at least a portion of the sheet, the unit cell comprising:
-
an outer circumferential edge of folds of a first type comprising a pair of longitudinal edge folds extending along the tube and transverse edge folds extending around the tube; a central longitudinal fold extending along the tube between the transverse edge folds; and angular folds extending from each intersection of a longitudinal edge fold with a transverse edge fold to the central longitudinal fold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
-
-
27. A planar sheet of biocompatible material having opposed edges and a pattern of fold lines arranged to allow the sheet to be folded into a tube with the opposed edges adjacent one another to form a stent which is collapsible for deployment, the pattern of folds comprising a unit cell repeated over at least a portion of the sheet, the unit cell comprising:
-
an outer circumferential edge of folds of a first type comprising a pair of longitudinal edge folds extending along the tube and transverse edge folds extending around the tube; a central longitudinal fold extending along the tube between the transverse edge folds; and angular folds extending from each intersection of a longitudinal edge fold with a transverse edge fold to the central longitudinal fold.
-
-
28. A stent comprising a biocompatible sheet arranged as a tube folded with a pattern of folds allowing the stent to be collapsed for deployment, wherein the tube is conical along at least a portion thereof.
- 29. A stent comprising a biocompatible sheet arranged as a tube folded with a pattern of folds allowing the stent to be collapsed for deployment, wherein the outer surface of the sheet on the outer side of the tube has a higher degree of friction than the inner surface of the sheet on the inner side of the tube.
Specification