摘要:
According to one aspect of the present invention, implantable or insertable medical devices are provided, which contain sol-gel derived ceramic regions which have molded submicron surface features.
摘要:
According to an aspect of the present invention, implantable or insertable blood-contacting devices are provided, which contain one or more release regions that release nitric oxide and one or more anti-restenotic agents. The release region contains one or more polymeric components. The release region also optionally contains one or more inorganic components. Nitric oxide producing groups may be attached to the polymeric component(s), to the optional inorganic component(s), or both. The one or more anti-restenotic agents may be admixed with the polymeric and optional inorganic components, attached to the polymeric component(s), attached to the optional inorganic component(s), or a combination thereof.
摘要:
An endoprosthesis, e.g., a stent (e.g., a drug eluting stent), that includes a porous surface and hollow elements integrated with a coating on the surface and a method of making the same are disclosed.
摘要:
An endoprosthesis, e.g., a stent (e.g., a drug eluting stent), includes a surface, a first layer having a polyelectrolyte deposited on the surface, a plurality of polymeric particles deposited on the first layer, and a coating of a porous material deposited on the plurality of polymeric particles. At least one particle of the plurality of polymeric particles includes a polymer matrix and a drug distributed in the polymer matrix. A method of making the endoprosthesis is also disclosed.
摘要:
An endoprosthesis, e.g., a stent (e.g., a drug eluting stent), that includes a porous surface and hollow elements integrated with a coating on the surface and a method of making the same are disclosed.
摘要:
A medical device having a biodegradable coating comprising an inorganic material complexed to macromolecules. Biodegradation of the biodegradable coating releases nanoparticles of the inorganic material with macromolecules complexed to the released nanoparticles. The inorganic material may be applied directly onto the medical device as a nanostructured coating or be dispersed within or under a layer of biodegradable polymer. The medical device body may comprise a biodegradable metallic material. Also provided is a method of delivering macromolecules to body tissue using the medical device of the present invention.
摘要:
According to an aspect of the invention, articles are provided which comprise a substrate and a ceramic coating which covers at least a portion of the substrate surface. The ceramic coating includes raised ceramic shells connected by a ceramic layer that is conformal with the substrate. According to another aspect of the present invention, carbon nanotubes are provided, which comprise a ceramic coating covering at least a portion of the carbon nanotubes.
摘要:
According to an aspect of the invention, articles are provided which comprise a substrate and a ceramic coating which covers at least a portion of the substrate surface. The ceramic coating includes raised ceramic shells connected by a ceramic layer that is conformal with the substrate. According to another aspect of the present invention, carbon nanotubes are provided, which comprise a ceramic coating covering at least a portion of the carbon nanotubes.
摘要:
Particulate materials useful as fillers, reinforcing agents, radioopacifiers, or impact modifiers. The particulate material has an average particle size range of about 10,000 nm or less and comprises an organic-inorganic hybrid material that has a ceramic material network having organic polymer segments distributed throughout the ceramic network. The ceramic network may be prepared by a sol-gel technique. The particulate material may be compounded in thermoplastic polymer compositions useful in a variety of applications such as preparation of medical device components.
摘要:
A medical device such as a catheter, stent or balloon, or a component thereof is formed by depositing an inorganic-organic hybrid composite material on an eliminatable shape form and removing the shape form, leaving the medical device or component thereof formed of the inorganic-organic hybrid composite material. Multiple layers of the inorganic-organic hybrid composite material can be used in the formation. A particular structure is an expandable balloon member for a catheter assembly.