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US 8,263,169 B2Granted
Stent mandrel fixture and method for reducing coating defects
AssigneeAdvanced Cardiovascular Systems, Inc.
InventorsFuh-Wei Tang, Syed F. A. Hossainy, Dorie Happ, Ty T. Hu
Life of this patent
Estimating the term…
Abstract
A stent mandrel fixture for supporting a stent during the application of a coating substance is provided.
Claims48
A method of coating a stent with a substance, comprising:
- mounting a stent on a stent mandrel fixture, the stent including a first and second end and the stent mandrel fixture including a first member, a second member and a third member, the mounting including placing the first end on a surface of the first member including placing the first end adjacent to or over a groove disposed on the surface of the first member, disposing the third member within a bore of the stent, and placing the second end on the second member;
- and
- applying the substance to the stent while mounted on the stent mandrel fixture,
- wherein the first member comprises a domed shaped end or a coned end.
1 more element
A method of coating a stent with a substance, comprising:
- mounting a stent on a stent mandrel fixture, the stent including a first and second end and the stent mandrel fixture including a first member, a second member and a third member, the mounting including placing the first end on the first member including placing the first end on a surface of the first member, the surface having a groove formed therein, the groove having an opening at the surface and a bottom surface opposite the opening, disposing the third member within a bore of the stent, and placing the second end on the second member after the third member is disposed within the bore;
- applying the substance to the stent;
- and
- collecting an excess amount of the applied substance at the bottom surface of the groove, wherein the mounting of the stent further includes connecting the second member to the third member after the first end is placed on the first member.
1 more element
A method of coating a stent with a substance, comprising:
- mounting a stent on a stent mandrel fixture, the stent including a first and second end and the stent mandrel fixture including a first member, a second member and a third member, the mounting including placing the first end on the first member including placing the first end adjacent to or over a groove disposed on a surface of the first member, the groove having an opening at the surface and a bottom surface opposite the opening, disposing the third member within a bore of the stent, and placing the second end on the second member;
- and
- applying the substance to the stent while mounted on the stent mandrel fixture, wherein the bottom surface of the groove collects an excess amount of the substance,
- wherein the placing of the first end includes placing the first end against the surface of the first member, and
- wherein the placing of the first end includes placing the first end against the surface of the first member such that no single, continuous groove extends from a location within the bore of the stent to a location outside of the bore of the stent.
2 more elements
A method of coating a stent with a substance, comprising:
- mounting a stent on a stent mandrel fixture, the stent including a first and second end and the stent mandrel fixture including a first member, a second member and a third member, the mounting including placing the first end on the first member including placing the first end adjacent to or over a groove disposed on a surface of the first member, disposing the third member within a bore of the stent, and placing the second end on the second member;
- and
- applying the substance to the stent while mounted on the stent mandrel fixture,
- wherein the placing of the first end includes placing the first end against the surface of the first member such that the groove circumscribes an axis of the bore of the stent.
1 more element
A method of coating a stent with a substance, comprising:
- mounting a stent on a stent mandrel fixture, the stent including a first and second end and the stent mandrel fixture including a first member, a second member and a third member, the mounting including placing the first end on the first member including placing the first end adjacent to or over a groove disposed on a surface of the first member, the groove having an opening at the surface and a bottom surface opposite the opening, disposing the third member within a bore of the stent, and placing the second end on the second member;
- and
- applying the substance to the stent while mounted on the stent mandrel fixture, wherein the bottom surface of the groove collects an excess amount of the substance,
- wherein the placing of the first end includes placing the first end against the surface of the first member, and
- wherein the placing of the first end includes placing the first end against the surface of the first member such that a first groove on the surface is disposed entirely outside the bore of the stent and a second groove on the surface is disposed entirely inside the bore of the stent.
2 more elements
A method of coating a stent with a substance, comprising:
- mounting a stent on a stent mandrel fixture, the stent including a first and second end and the stent mandrel fixture including a first member, a second member and a third member, the mounting including placing the first end on the first member, disposing the third member within a bore of the stent, and placing the second end on the second member, wherein the placing of the first end includes placing the first end adjacent to or over a groove disposed on the surface of the first member, the groove has an opening at the surface and a bottom surface opposite the opening, and wherein the placing of the first end is performed such that the groove extends from a position inside the stent to a position outside of the stent;
- and
- applying the substance to the stent while mounted on the stent mandrel fixture, wherein the groove collects excess amounts of the substance, the groove encircles a central axis of the bore.
A method of coating a stent with a substance, comprising:
- mounting a stent on a stent mandrel fixture, the stent including a first and second end and the stent mandrel fixture including a first member, a second member and a third member, the mounting including placing the first end on the first member including placing the first end on a surface of the first member, the surface having a groove formed therein, the groove having an opening at the surface and a bottom surface opposite the opening, disposing the third member within a bore of the stent, and placing the second end on the second member after the third member is disposed within the bore;
- applying the substance to the stent;
- and
- collecting an excess amount of the applied substance at the bottom surface of the groove,
- wherein the surface of the first member has a plurality of grooves formed therein, each of the plurality of grooves has an opening at the surface and a bottom surface opposite the opening, and the plurality of grooves collects excess amounts of the substance at the bottom surfaces, and
- each of the plurality of grooves encircles a central axis of the bore.
3 more elements
A method of coating a stent with a substance, comprising:
- mounting a stent on a stent mandrel fixture, the stent including a first and second end and the stent mandrel fixture including a first member, a second member and a third member, the mounting including placing the first end on the first member including placing the first end adjacent to or over a groove disposed on a surface of the first member, disposing the third member within a bore of the stent, and placing the second end on the second member;
- applying the substance to the stent while mounted on the stent mandrel fixture;
- and
- allowing an excess amount of the applied substance to enter into an opening of the groove and collect at a bottom surface of the groove, the bottom surface located opposite the opening;
- and allowing the excess amount to flow axially on the first member and off an end of the first member,
- wherein the mounting of the stent further includes placing at least one of the first and second ends of the stent on a non-stick coating disposed on at least one of the respective first and second members.
3 more elements
A method of coating a stent with a substance, comprising:
- mounting a stent on a stent mandrel fixture, the stent including a first and second end and the stent mandrel fixture including a first member, a second member and a third member, the mounting including placing the first end on the first member including placing the first end adjacent to or over a groove disposed on a surface of the first member, the groove having an opening at the surface and a bottom surface opposite the opening, disposing the third member within a bore of the stent, and placing the second end on the second member;
- and
- applying the substance to the stent while mounted on the stent mandrel fixture, wherein the bottom surface of the groove collects an excess amount of the substance,
- wherein at least one of the first or second members is releasably connectable to the third member to allow the stent to be placed over the third member.
1 more element
A method of coating a stent with a substance, comprising:
- mounting a stent on a stent mandrel fixture, the stent including a first and second end and the stent mandrel fixture including a first member, a second member and a third member, the mounting including placing the first end on the first member including placing the first end adjacent to or over a groove disposed on a surface of the first member, disposing the third member within a bore of the stent, and placing the second end on the second member;
- and
- applying the substance to the stent while mounted on the stent mandrel fixture,
- wherein the mounting of the stent further includes placing at least one of the first and second ends of the stent on a non-stick coating disposed on at least one of the respective first and second members, and wherein at least one of the first or second members is releasably connectable to the third member to allow the stent to be placed over the third member.
1 more element
A method of coating a stent with a substance, comprising:
- mounting a stent on a stent mandrel fixture, the stent including a first and second end and the stent mandrel fixture including a first member, a second member and a third member, the mounting including placing the first end on the first member including placing the first end on a surface of the first member, the surface having a groove formed therein, the groove having an opening at the surface and a bottom surface opposite the opening, disposing the third member within a bore of the stent, and placing the second end on the second member after the third member is disposed within the bore;
- applying the substance to the stent;
- and
- collecting an excess amount of the applied substance at the bottom surface of the groove,
- wherein at least one of the first or second members is releasably connectable to the third member to allow the stent to be placed over the third member.
2 more elements
A method of coating a stent with a substance, comprising:
- mounting a stent on a stent mandrel fixture, the stent including a first and second end and the stent mandrel fixture including a first member, a second member and a third member, the mounting including placing the first end on the first member including placing the first end adjacent to or over a groove disposed on a surface of the first member, disposing the third member within a bore of the stent, and placing the second end on the second member;
- and
- applying the substance to the stent while mounted on the stent mandrel fixture,
- wherein the placing of the first end includes placing the first end against the surface of the first member such that the groove extends continuously from a location within the stent bore to a location outside of the stent bore, and
- wherein at least one of the first or second members is releasably connectable to the third member to allow the stent to be placed over the third member.
2 more elements
A method of coating a stent with a substance, comprising:
- mounting a stent on a stent mandrel fixture, the stent including a first and second end and the stent mandrel fixture including a first member, a second member and a third member, the mounting including placing the first end on the first member, disposing the third member within a bore of the stent, and placing the second end on the second member, wherein the placing of the first end includes placing the first end adjacent to or over a plurality of grooves disposed on the surface of the first member, each of the plurality of grooves has an opening at the surface and a bottom surface opposite the opening, and wherein the placing of the first end is performed such that each of the plurality of grooves extends from a position inside the stent to a position outside of the stent;
- and
- applying the substance to the stent while mounted on the stent mandrel fixture, wherein a groove collects excess amounts of the substance,
- wherein at least one of the first or second members is releasably connectable to the third member to allow the stent to be placed over the third member.
1 more element
Dependencies are inferred from the claim text.