Stent delivery systems
First Claim
1. Apparatus for implanting a flexible, generally cylindrical, expandable stent, comprising:
- a catheter having distal and proximal ends, said catheter defining a central lumen and a second lumen extending therethrough and having two longitudinally displaced openings extending from the second lumen radially to the surface of the catheter,a flexible, expandable stent having discrete proximal and distal ends, said stent being positioned circumferentially around said catheter and said discrete ends extending into said openings to hold said stent in position, andat least one release wire positioned in and extending through the second lumen, said release wire or wires fixedly containing at least one conically shaped pushing member capable of causing a discrete end of said stent to move radially as the release wire or wires are moved proximally.
9 Assignments
0 Petitions
Accused Products
Abstract
This invention is directed to stent delivery systems. In one embodiment an apparatus for implanting a flexible, generally cylindrical, expandable stent, comprises a catheter having distal and proximal ends, the catheter defining a central lumen and a second lumen extending therethrough and having two longitudinally displaced openings extending from the second lumen radially to the surface of the catheter; a flexible, expandable stent having discrete proximal and distal ends, the stent being positioned circumferentially around the catheter and the discrete ends extending into the openings to hold the stent in position; and at least one release wire positioned in and extending through the second lumen, the release wire or wires fixedly containing at least one conically shaped pushing member capable of causing a discrete end of the stent to move radially as the release wire is moved proximally.
379 Citations
34 Claims
-
1. Apparatus for implanting a flexible, generally cylindrical, expandable stent, comprising:
-
a catheter having distal and proximal ends, said catheter defining a central lumen and a second lumen extending therethrough and having two longitudinally displaced openings extending from the second lumen radially to the surface of the catheter, a flexible, expandable stent having discrete proximal and distal ends, said stent being positioned circumferentially around said catheter and said discrete ends extending into said openings to hold said stent in position, and at least one release wire positioned in and extending through the second lumen, said release wire or wires fixedly containing at least one conically shaped pushing member capable of causing a discrete end of said stent to move radially as the release wire or wires are moved proximally. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. Apparatus for implanting a flexible, generally cylindrical, expandable stent, comprising:
-
a catheter having distal and proximal ends, said catheter defining a central lumen and from one to three secondary lumens extending therethrough and having two or three longitudinally displaced openings extending from the secondary lumen or lumens radially to the surface of the catheter, a flexible, expandable stent having discrete proximal and distal ends, said stent being positioned circumferentially around said catheter, one or more release wires positioned in and extending through the second lumen or lumens, and two or three restraining means positioned proximal and distal to the stent, respectively, each of said restraining means comprising a loop member having two ends, one of which ends is positioned on the outer surface of the catheter and the other of which ends has an opening therein, such that said loop member is positioned across the external surface of said stent end and extends into a respective radial opening to intersect a release wire, such that when said release wire or wires are pulled proximally the loop members disengage the ends of the stent and the stent uncoils. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. Apparatus for implanting a flexible generally cylindrical, expandable stent, comprising:
-
a catheter having distal and proximal ends, said catheter defining a central lumen and from one to three secondary lumens extending therethrough and having two or more longitudinally displaced openings extending from the secondary lumen or lumens to the surface of the catheter, a flexible expandable stent having discrete proximal and distal ends, said stent being positioned circumferentially around said catheter, at least one release wire positioned in and extending through the secondary lumen or lumens, and two or three restraining means, two of which are positioned at respective ends of the stent and each having a restraining member extending over a respective end of the stent, the release wire or wires extending through at least one of said openings to hold one or both ends of the stent and thus to hold the stent in position, such that when the release wire or wires are pulled proximally, one or both ends of the stent are released from the restraining members to permit the stent to expand. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
-
-
32. Apparatus for implanting a flexible, generally cylindrical, expandable stent, comprising:
-
a catheter having distal and proximal ends, said catheter defining a central lumen and a second lumen extending therethrough and having two longitudinally displaced openings extending from the second lumen radially to the surface of the catheter, a flexible, expandable stent having discrete proximal and distal ends, said stent being positioned circumferentially around said catheter and said discrete ends extending into said openings to hold said stent in position, and a release wire positioned in and extending through the second lumen, said release wire fixedly containing a pushing member capable of causing a discrete end of said stent to move radially as the release wire is moved proximally, wherein the second lumen is substantially arcuate shaped, the pushing member has a cross-section of similar shape, the proximal portion of the pushing member has two oppositely positioned sloping faces, and the openings in the catheter are offset such that one sloping face intersects the plane of one opening and the other sloping face intersects the plane of the other opening, as the release wire is pulled distally. - View Dependent Claims (33, 34)
-
Specification