摘要:
A method of coating a stent may comprise applying a composition including a drug and a polymer to the stent to form a coating. The release rate of the drug from the coating gradually increases along a length of the stent which extends axially from opposite ends of the stent. The variable drug release rate can be accomplished by varying the coating thickness, by applying a barrier region over the drug-containing composition, and/or by having different polymers in the coating, the polymers having different drug permeabilities.
摘要:
A method of coating a stent may comprise applying a composition including a drug and a polymer to the stent to form a coating. The release rate of the drug from the coating gradually increases along a length of the stent which extends axially from opposite ends of the stent. The variable drug release rate can be accomplished by varying the coating thickness, by applying a barrier region over the drug-containing composition, and/or by having different polymers in the coating, the polymers having different drug permeabilities.
摘要:
The present example provides for modification of the link supervision timer allows for an enhanced user experience with wireless devices, by allowing loss of the wireless link to be handled more effectively. The link super vision timer may be changed without modifying the device profile being used. The change in the timer may be based upon the profile of the communications that is occurring, and upon the current state of the communications.
摘要:
A stent is formed by encasing or encapsulating metallic rings in an inner polymeric layer and an outer polymeric layer. At least one polymer link connects adjacent metallic rings. The stent is drug loaded with one or more therapeutic agent or drug, for example, to reduce the likelihood of the development of restenosis in the coronary arteries. The inner and outer polymeric materials can be of the same polymer or different polymer to achieve different results, such as enhancing flexibility and providing a stent that is visible under MRI, computer tomography and x-ray fluoroscopy.
摘要:
An apparatus and method to treat vulnerable plaque. In one embodiment, the apparatus has a medical device to treat an occlusive plaque, and is also adapted to release a biologically active agent to treat vulnerable plaque located downstream from the occlusive plaque. In an alternative embodiment, the apparatus has an expandable tube attached to the inner surface of a stent, and a layer of endothelial cells seeded on the inner surface of the expandable tube. The expandable tube shields a vulnerable plaque from a body lumen.
摘要:
A stent is provided with a coating having a variable drug release rate. The release rate can be greater over a curved or bent segment of a strut network as compared to generally linear segments of the strut network. The coating can have a barrier region that is thicker over the generally linear segments. The coating can have a drug mixed with polymers. The curved or bent segment can have a greater amount of a polymer having relatively high drug permeability as compared to the generally linear segments.
摘要:
The present example provides for modification of the link supervision timer allows for an enhanced user experience with wireless devices, by allowing loss of the wireless link to be handled more effectively. The link supervision timer may be changed without modifying the device profile being used. The change in the timer may be based upon the profile of the communications that is occurring, and upon the current state of the communications.
摘要:
A wireless device, system and method that receive a downloadable file from a wide area network are described. The system comprises a wireless device, a computer and a computer software module. The computer is communicatively coupled to a modem that communicates with a wide area network. The computer further comprises a computer wireless communications module that communicates with at least one wireless device that is in proximity to the computer. The wireless device comprises a device memory, a first wireless device communications module that is configured to communicate with the computer wireless module, and a device display that displays a link that corresponds to a downloadable file accessible using the wide area network. The computer software module resides on the computer and receives the link from the wireless device. The computer software module requests the downloadable file from the wide area network and forwards the downloadable file to the wireless device without storing the downloadable file on the computer.