摘要:
A vascular medical device is provided, which contains at least one phenolic compound. The medical device also contains at least one polymeric region, which regulate the release of the phenolic compound from the device. The polymeric region, in turn, contains at least one polymer species. In some embodiments, for example, the polymeric region contains a vinyl aromatic polymer species (e.g., a styrene homopolymer or copolymer). In other embodiments, for example, the polymeric region contains an alkene polymer species (e.g., an isobutylene homopolymer or copolymer). In still other embodiments, for example, the polymeric region contains a biostable polymer having at least one Tg below 25° C. (e.g., a homopolymer or copolymer containing one or more polyalkene polymer blocks).
摘要:
The present disclosure relates in part to pharmaceutical compositions comprising polymeric nanoparticles having certain glass transition temperatures. Other aspects of the invention include methods of making such nanoparticles.
摘要:
An implantable or insertable medical device which includes (a) a tacky polymeric region and (b) spray dried microparticles, which are adhered to the tacky polymeric region. The present invention is further directed to methods of forming such medical devices, and methods of releasing a therapeutic agent within a patient using such medical devices.
摘要:
According to an aspect of the present invention, implantable or insertable medical devices are provided which contain the following: (a) substrate having one or more depressions that contain at least one therapeutic agent and (b) a porous membrane disposed over the substrate and the one or more depressions, which regulate transport of chemical species between the therapeutic-agent-containing depressions and the exterior of the device. The substrate and the porous membrane are formed of different materials each with a different thermal expansion coefficient. Moreover, one of the substrate and the porous membrane at least partially surrounds the other. Other aspects of the present invention are directed to methods of making such medical devices, and methods of treatment using such medical devices.
摘要:
A medical device comprising halofuginone is provided. The medical device is adapted for implantation or insertion into a blood vessel and it provides a cumulative, in vivo, 14 day release that lies between 0.02 μg and 0.2 μg of halofuginone per mm2 of stent surface area.
摘要:
An medical device which comprises (a) a medical device substrate and (b) a therapeutic-agent-containing region over the substrate that comprises a therapeutic agent and an antioxidant. Exemplary medical devices are implantable or insertable medical devices, such as catheters, guide wires, balloons, filters, stents, stent grafts, vascular grafts, vascular patches and shunts. Also described are methods of making devices such as those above, which methods comprise: (a) providing a solution comprising (i) solvent, (ii) the therapeutic agent, and (iii) the antioxidant; (b) providing the medical device substrate; (c) contacting the solution with the medical device substrate; and (d) removing the solvent from the solution to form the therapeutic-agent-containing region.
摘要:
The present disclosure relates in part to pharmaceutical compositions comprising polymeric nanoparticles having certain glass transition temperatures. Other aspects of the invention include methods of making such nanoparticles.
摘要:
The present disclosure generally relates to therapeutic nanoparticles. Exemplary nanoparticles disclosed herein may include about 0.1 to about 40 weight percent of a therapeutic agent and about 10 to about 90 weight percent a diblock poly(lactic) acid-poly(ethylene)glycol copolymer or a diblock poly(lactic)-co-poly(glycolic) acid-poly(ethylene)glycol copolymer, wherein the diblock poly(lactic) acid-poly(ethylene)glycol copolymer comprises poly(lactic) acid having a number average molecule weight of about 30 kDa to about 90 kDa or the diblock poly(lactic)-co-poly(glycolic) acid-poly(ethylene)glycol copolymer comprises poly(lactic)-co-poly(glycolic) acid having a number average molecule weight of about 30 kDa to about 90 kDa.
摘要:
The present invention relates to a device and method for delivery of a patch, graft, implant, therapeutic agent, or other device onto tissue using a rolled delivery mechanism. In one embodiment, a rolled delivery mechanism is provided for delivering a patch to tissue when the rolled delivery mechanism is unrolled. In another embodiment, a rolled delivery mechanism is provided for delivering therapeutic agent to a target tissue.