摘要:
A medical device including at least one reservoir, adapted to contain a material, such as a therapeutic agent, and sealed by a cover. The reservoir is openable, so as to release the material, for example, by (i) disintegration of the cover, (ii) movement of the cover to an open position, and/or (iii) a change of composition or properties of the cover allowing the material to pass therethrough. The power required to open the reservoir is provied by a current induced in a coil associated with the medical device by a change in magnetic flux in the area of the medical device.
摘要:
The present invention is directed to methods, processes, and systems for delivering therapeutic agent to a medical device. Under some methods, processes, and systems of the invention, particles including a magnetic material and a therapeutic agent may be directed towards a medical device via magnetic attraction. In another embodiment particles including a magnetic material may force a therapeutic agent/solvent solution into porous matrix by using a magnetic attraction. In still another embodiment, a medical device having at least a portion thereof including a magnetic material is used to attract and adhere particles comprising magnetic material and therapeutic agent to a target surface of the medical device, wherein the particles are fused to the target surface.
摘要:
The invention relates generally to an implantable medical device for delivering a therapeutic agent to the body tissue of a patient, and a method for making such a medical device. In particular, the invention pertains to an implantable stent, such as an intravascular stent, having a coating comprising an inorganic or ceramic oxide, metal or inert carbon and a plurality of reservoirs in such material that contain a therapeutic agent.
摘要:
The present invention is generally directed to implantable medical devices for delivering therapeutic agents to the body tissue of a patient and methods for making such medical devices. In particular, the present invention is directed to implantable medical devices, such as intravascular stents, having a surface that includes a plurality of cavities and a plurality of pores and a composition disposed in the pores and/or cavities, as well as, implantable medical devices, such as intravascular stents, having a surface that has a coating composition disposed on the surface, wherein the coating composition includes a plurality of cavities and a plurality of pores and another coating composition disposed in the pores and/or cavities.
摘要:
The invention relates generally to an implantable medical device for delivering a therapeutic agent to the body tissue of a patient, and a method for making such a medical device. In particular, the invention pertains to an implantable stent, such as an intravascular stent, having a coating comprising an inorganic or ceramic oxide, metal or inert carbon and a plurality of reservoirs in such material that contain a therapeutic agent.
摘要:
The present invention is generally directed to implantable medical devices for delivering therapeutic agents to the body tissue of a patient and methods for making such medical devices. In particular, the present invention is directed to implantable medical devices, such as intravascular stents, having a surface that includes a plurality of cavities and a plurality of pores and a composition disposed in the pores and/or cavities, as well as, implantable medical devices, such as intravascular stents, having a surface that has a coating composition disposed on the surface, wherein the coating composition includes a plurality of cavities and a plurality of pores and another coating composition disposed in the pores and/or cavities.
摘要:
A medical balloon assembly including an inflatable balloon and at least one cutting element extending from the balloon is disclosed. The inflatable balloon includes an outer wall facing outward and an inner wall facing outward. The cutting element comprises a plurality of openings therein including a first opening and a second opening. The first opening is closed off by a portion of the outer wall. The cutting element further includes a passageway extending from the first opening to the second opening. The passageway is defined by the cutting element and the portion of the outer wall which closes off the passageway. The passageway may contain a therapeutic agent.
摘要:
The present invention generally relates to the conditioning of coated medical devices such as stents. More specifically, the present invention relates to methods for positioning a medical device within an elution media for a predetermined time period to eliminate a burst release from the coating. Under methods and processes of the invention, a medical device target surface may be identified and coated with therapeutic. The coated surface of the medical device may then be positioned within an elution media for a predetermined period of time to release a predetermined amount of coating.
摘要:
Provided is a coated medical device (e.g., a stent) comprising one or more surfaces having dispersed thereon a plurality of microparticles comprising an active pharmaceutical ingredient (API) and a polymer. Specifically, the microparticles are disposed on a device surface in a microparticulate phase coating, i.e., as discrete microparticles in the absence of a continuous phase coating. The medical device effectively adheres one or more APIs to its surface, and allows controlled release of the APIs from the device surface to a desired treatment area by using a minimal amount of polymer. The medical device is suitable for insertion or implantation into a subject, preferably a human. Also provided are methods for preparing and using the coated medical device.