摘要:
The present disclosure teaches methods of controlling the release rate of agents from a polymeric matrix that include designing and creating a predetermined initial morphology (IM) profile in a polymeric matrix. The teachings indicate, inter alia, that control over the release rate of agents can provide for an improved control over the administration of agents as well as have an effect upon the mechanical integrity and absorption rate of the polymeric matrix.
摘要:
A coating comprising a stimulus-responsive material and a bioactive agent for controlled release of the bioactive agent and methods of making and using the same are disclosed.
摘要:
Provided herein is a PEA polymer blend and coatings or implantable devices formed therefrom. The PEA polymer blend is formed of a PEA polymer and a material capable of hydrogen bonding with the PEA. The PEA polymer blend can form a coating on an implantable device, one example of which is a stent. The coating can optionally include a biobeneficial material and/or optionally with a bioactive agent. The implantable device can be used to treat or prevent a disorder such as one of atherosclerosis, thrombosis, restenosis, hemorrhage, vascular dissection or perforation, vascular aneurysm, vulnerable plaque, chronic total occlusion, claudication, anastomotic proliferation for vein and artificial grafts, bile duct obstruction, ureter obstruction, tumor obstruction, and combinations thereof.
摘要:
The present invention generally encompasses a medical article, such as a medical device or coating comprising an agent or combination of agents, wherein the agent is distributed throughout a polymeric matrix. The polymeric matrix comprises an agent and a poly(ester amide) having a design that was preselected to provide a predetermined release rate of the combination of agents from the medical article.
摘要:
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.
摘要:
A method of coating an implantable medical device, such as a stent, is disclosed. The method includes applying a formulation on a first polymer layer containing a therapeutic substance to form a second layer. The formulation can contain a highly hydrophobic polymer or a solvent which is a poor solvent for the drug or the polymer of the first layer. The formulation can have a low surface tension value or a high Weber number value.
摘要:
A coating for an implantable medical device is provided comprising a first layer including a first polymer and a second layer including a second polymer. The second layer is disposed over at least a portion of the first layer. The second polymer has a lower degree of hydration than the first polymer.
摘要:
Methods and compositions for the sustained release of treatment agents to treat an occluded blood vessel and affected tissue and/or organs are disclosed. Porous or non-porous bioabsorbable glass, metal or ceramic bead, rod or fiber particles can be loaded with a treatment agent, and optionally an image-enhancing agent, and coated with a sustained-release coating for delivery to an occluded blood vessel and affected tissue and/or organs by a delivery device. Implantable medical devices manufactured with coatings including the particles or embedded within the medical device are additionally disclosed.