Method of using a mandrel to coat a stent
First Claim
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1. A method of coating a stent, comprising:
- positioning a stent on a gear, the gear being supported by a mandrel and having a diameter greater than a diameter of the mandrel;
rotating the mandrel to cause the gear to provide rotational motion to the stent; and
applying a coating material to the stent;
wherein an outer surface of the mandrel does not make contact with an inner surface of the stent; and
wherein the gear has a shape or diameter configured so that a contact area between the gear and stent changes as the stent rotates.
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Abstract
A method of applying a coating to a stent supported by a mandrel is disclosed.
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Citations
39 Claims
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1. A method of coating a stent, comprising:
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positioning a stent on a gear, the gear being supported by a mandrel and having a diameter greater than a diameter of the mandrel; rotating the mandrel to cause the gear to provide rotational motion to the stent; and
applying a coating material to the stent;wherein an outer surface of the mandrel does not make contact with an inner surface of the stent; and wherein the gear has a shape or diameter configured so that a contact area between the gear and stent changes as the stent rotates. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of coating a stent, comprising:
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positioning a stent on a gear, the gear being supported by a mandrel and having a diameter greater than a diameter of the mandrel; rotating the mandrel to cause the gear to provide rotational motion to the stent; and applying a coating material to the stent; wherein applying the coating material comprises spraying a composition including a polymer added to a solvent, and optionally an active agent added thereto, onto the stent; wherein the gear is configured to allow the stent to rest on the gear so as to form a contact area between an outer surface of the gear and an inner surface of the stent, and wherein a shape or diameter of the gear is configured so that the contact area changes location as the stent is rotated. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of coating a stent, comprising:
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positioning a stent on a gear, the gear being supported by a mandrel and having a diameter greater than a diameter of the mandrel; rotating the mandrel to cause the gear to provide rotational motion to the stent;
applying a coating material to the stent; andmoving the stent in a linear direction along a longitudinal axis of the stent during the application of the coating material; wherein the stent comprises struts and gaps disposed between the struts, wherein the gear has teeth sized to fit into the gaps of the stent. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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25. A method of coating a stent, comprising:
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adjusting a position of a gear along a length of a mandrel, the gear having teeth; positioning a stent on the gear; rotating the mandrel to rotate the stent; and applying a coating material to the stent; wherein the gear has a threaded bore to allow the gear to be adjusted along the length of the mandrel. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32)
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33. A method of coating a stent, comprising:
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positioning a stent on a gear; rotating a mandrel to cause the gear to provide rotational motion to the stent; and applying a coating material to the rotating stent; wherein the gear has a rotation axis and the rotating step is such that the stent rotates about an axis offset from the rotation axis. - View Dependent Claims (34, 35, 36, 37, 38, 39)
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Specification