Fluid treatment of a polymeric coating on an implantable medical device
First Claim
Patent Images
1. A method of manufacturing an implantable medical device comprising:
- 1) applying a composition to an implantable medical device to form a wet coating, the composition comprising a semi-crystalline polymer, a first fluid, and optionally an active agent;
2) applying a second fluid to the wet coating, the second fluid being substantially or completely free from any polymers; and
3) removing the first fluid and the second fluid to form a dry coating;
wherein the application of the second fluid causes the percent crystallinity of the semi-crystalline polymer to increase.
2 Assignments
0 Petitions
Accused Products
Abstract
A method for modifying a polymeric coating on an implantable medical device, such as a stent, is disclosed. The method includes application of a fluid to a wet or dry polymeric coating with and without drugs.
417 Citations
62 Claims
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1. A method of manufacturing an implantable medical device comprising:
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1) applying a composition to an implantable medical device to form a wet coating, the composition comprising a semi-crystalline polymer, a first fluid, and optionally an active agent; 2) applying a second fluid to the wet coating, the second fluid being substantially or completely free from any polymers; and 3) removing the first fluid and the second fluid to form a dry coating; wherein the application of the second fluid causes the percent crystallinity of the semi-crystalline polymer to increase. - 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, 28, 29, 30, 31, 32, 33, 34, 35)
is applied to a reservoir layer comprising an active agent, the reservoir layer being on the implantable medical device; and forms a barrier layer over the reservoir layer.
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27. The method of claim 1 wherein the second fluid is a volatile fluid having a boiling point below 60°
- C. at atmospheric pressure.
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28. The method of claim 1 wherein the second fluid is a more effective solvent for the active agent than the second fluid is for the semi-crystalline polymer.
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29. The method of claim 1 wherein the second fluid at least partially dissolves in the active agent, but does not dissolve in the semi-crystalline polymer.
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30. The method of claim 1 wherein the second fluid is chilled.
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31. The method of claim 1 wherein the temperature of the second fluid is below 25°
- C.
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32. The method of claim 1 wherein the temperature of the second fluid is equal to or greater than the glass transition temperature of the semi-crystalline polymer.
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33. The method of claim 1 wherein the temperature of the second fluid is below the melting temperature of the semi-crystalline polymer.
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34. The method of claim 1 wherein the temperature of the second fluid is equal to or greater than the glass transition temperature of the semi-crystalline polymer and below the melting temperature of the semi-crystalline polymer.
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35. The method of claim 1 wherein the temperature of the second fluid is at or about the crystallization temperature of the semi-crystalline polymer.
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36. A method of manufacturing an implantable medical device comprising:
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1) applying a composition to an implantable medical device to form a wet coating, the composition comprising a polymer, a first fluid which is a blend of two or more solvents, and optionally an active agent; 2) applying a second fluid to the wet coating, the second fluid being substantially or completely free from any polymers; and 3) removing the first fluid and the second fluid to form a dry coating. - View Dependent Claims (37)
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38. A method of manufacturing an implantable medical device comprising:
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1) applying a composition to an implantable medical device to form a wet coating, the composition comprising a polymer, a first fluid, and an active agent; 2) applying a second fluid to the wet coating, the second fluid being substantially or completely free from any polymers; and 3) removing the first fluid and the second fluid to form a dry coating; wherein the active agent at least partially dissolves as a result of the exposure to the second fluid. - View Dependent Claims (39)
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40. A method of manufacturing an implantable medical device comprising:
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1) applying a composition to an implantable medical device to form a wet coating, the composition comprising a polymer, a first fluid, and optionally an active agent; 2) applying a second fluid to the wet coating, the second fluid being substantially or completely free from any polymers; and 3) removing the first fluid and the second fluid to form a dry coating; wherein applying the second fluid to the wet coating comprises applying the second fluid to a designated portion of the wet coating such that at least some of the wet coating does not get exposed to the second fluid. - View Dependent Claims (41)
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42. A method of manufacturing an implantable medical device comprising:
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1) applying a composition to an implantable medical device to form a wet coating, the composition comprising a polymer, a first fluid, and optionally an active agent; 2) applying a second fluid to the wet coating, the second fluid being substantially or completely free from any polymers; and 3) removing the first fluid and the second fluid to form a dry coating; wherein applying the second fluid to the wet coating comprises spraying the second fluid at a rate of about 0.1 mL/hr to about 50 mL/hr through an atomization spray nozzle with atomization gas pressures ranging from about 1 psi to about 30 psi.
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43. A method of manufacturing an implantable medical device comprising:
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1) applying a composition to an implantable medical device to form a wet coating, the composition comprising a polymer, a first fluid, and an active agent; 2) applying a second fluid to the wet coating, the second fluid being substantially or completely free from any polymers; and 3) removing the first fluid and the second fluid to form a dry coating; wherein the duration of exposure to the second fluid is sufficient to decrease the active agent release rate from the dry coating after the implantable medical device comprising the dry coating has been implanted into a biological lumen of a patient. - View Dependent Claims (44)
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45. A method of manufacturing an implantable medical device comprising:
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1) applying a composition to an implantable medical device to form a wet coating, the composition comprising a polymer, a first fluid, and optionally an active agent; 2) applying a second fluid to the wet coating, the second fluid being substantially or completely free from any polymers; and 3) removing the first fluid and the second fluid to form a dry coating; wherein the second fluid is a volatile fluid having a boiling point below 60°
C. at atmospheric pressure.- View Dependent Claims (46)
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47. A method of manufacturing an implantable medical device comprising:
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1) applying a composition to an implantable medical device to form a wet coating, the composition comprising a polymer, a first fluid, and an active agent; 2) applying a second fluid to the wet coating, the second fluid being substantially or completely free from any polymers; and 3) removing the first fluid and the second fluid to form a dry coating; wherein the second fluid is a more effective solvent for the active agent than the second fluid is for the polymer. - View Dependent Claims (48, 49)
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50. A method of manufacturing an implantable medical device comprising:
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1) applying a composition to an implantable medical device to form a wet coating, the composition comprising a polymer, a first fluid, and optionally an active agent; 2) applying a second fluid to the wet coating, the second fluid being substantially or completely free from any polymers; and 3) removing the first fluid and the second fluid to form a dry coating; wherein the second fluid is chilled. - View Dependent Claims (51)
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52. A method of manufacturing an implantable medical device, comprising:
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1) applying a composition to an implantable medical device to form a wet coating, the composition comprising a polymer, a first fluid, and optionally an active agent; 2) applying a second fluid to the wet coating, the second fluid being substantially or completely free from any polymers; and 3) removing the first fluid and the second fluid to form a dry coating; wherein the temperature of the second fluid is below 25°
C.- View Dependent Claims (53, 54, 55)
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56. A method of manufacturing an implantable medical device comprising:
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1) applying a composition to an implantable medical device to form a wet coating, the composition comprising a polymer, a first fluid, and optionally an active agent; 2) applying a second fluid to the wet coating, the second fluid being substantially or completely free from any polymers; and 3) removing the first fluid and the second fluid to form a dry coating; wherein the temperature of the second fluid is equal to or greater than the glass transition temperature of the polymer. - View Dependent Claims (57, 58, 59)
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60. A method of manufacturing an implantable medical device, the method comprising:
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1) applying a composition to an implantable medical device to form a wet coating, the composition comprising a polymer, a first fluid, and an active agent; 2) applying a second fluid to the wet coating, the second fluid being substantially or completely free from any polymers; and 3) removing the first fluid and the second fluid to form a dry coating; wherein the second fluid does not cause the active agent to precipitate.
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61. A method of manufacturing an implantable medical device, the method comprising:
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1) applying a composition to an implantable medical device to form a wet coating, the composition comprising a polymer, a first fluid, and an active agent; 2) applying a second fluid to the wet coating, the second fluid being substantially or completely free from any polymers; and 3) removing the first fluid and the second fluid to form a dry coating; wherein the second fluid does not cause the active agent to crystallize.
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62. A method of manufacturing an implantable medical device, the method comprising:
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1) applying a composition to an implantable medical device to form a wet coating, the composition comprising a polymer, a first fluid, and an active agent; 2) applying a second fluid to the wet coating, the second fluid being substantially or completely free from any polymers; and 3) removing the first fluid and the second fluid to form a dry coating; wherein the second fluid does not cause the active agent to solidify.
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Specification