摘要:
Water soluble macromers are modified by addition of free radical polymerizable groups, such as those containing a carbon-carbon double or triple bond, which can be polymerized under mild conditions to encapsulate tissues, cells, or biologically active materials. The polymeric materials are particularly useful as tissue adhesives, coatings for tissue lumens including blood vessels, coatings for cells such as islets of Langerhans, coatings, plugs, supports or substrates for contact with biological materials such as the body, and as drug delivery devices for biologically active molecules.
摘要:
Methods of treating a diseased blood vessel exhibiting stenosis with a bioabsorable stent are disclosed. The implanted stent supports the section of the vessel at an increased diameter for a period of time to allow the vessel to heal. The stent loses radial strength sufficient to support the section of the vessel in less than 6 months after implantation, loses mechanical integrity, and then erodes away from the section. The biodegradable stent results in changes in properties of plaque with time as the stent degrades. The time-dependent properties include the luminal area of the plaque and plaque geometric morphology parameters.
摘要:
An implantable medical device is disclosed having a helical construct including a set of spiral coils for local in vivo application of a therapeutic substance in a biological lumen. The helical construct is configured to apply less than 0.75 Bar of pressure to the biological lumen wall. The helical construct can have at least two sets of spiral coils having opposing helical directions. The device can be used for the treatment of vascular disorders such as restenosis and vulnerable plaque.
摘要:
Coatings for implantable devices or endoluminal prosthesis, such as stents, are provided, including a method of forming the coatings. The coatings can be used for the delivery of an active ingredient or a combination of active ingredients.
摘要:
A method of coating a stent is presented such that less than 50% of the total amount of 40-O-(2-hydroxyl)ethyl-rapamycin, or an analog or derivative thereof, is released in vivo in a 24 hour period, wherein the method comprises exposing the coating to sufficient temperature to modify the structure of the polymer.
摘要:
The current invention is directed to compositions comprising a plurality of particles including nanoshells or a medical device with a coating including nanoshells allowing for triggered drug release. Methods of treatment with such compositions are also included.
摘要:
Coatings for implantable devices or endoluminal prosthesis, such as stents, are provided, including a method of forming the coatings. The coatings can be used for the delivery of an active ingredient or a combination of active ingredients.
摘要:
A medical article is disclosed, comprising a biologically degradable AB block copolymer and a biologically degradable polymer that is capable, at equilibrium and at room temperature, of absorbing less than about 5 mass % water.
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 of making a therapeutic composition, as well as the therapeutic composition so made, is disclosed. The method comprises mixing a hydrophobic drug with an aqueous buffer solution and adding a surfactant to the aqueous buffer solution to form the therapeutic composition. A implantable medical device with the therapeutic composition and a method of making a coating for an implantable medical device containing the therapeutic composition is also disclosed.