Expandable medical device with openings for delivery of multiple beneficial agents
View Patent ↗An expandable medical device includes a plurality of elongated struts, forming a substantially cylindrical device which is expandable from a cylinder having a first diameter to a cylinder having a second diameter. A plurality of different beneficial agents can be loaded into different openings within the struts for delivery to the tissue. For treatment of conditions such as restenosis, different beneficial agents are loaded into different openings in the device to address different biological processes involved in restenosis and are delivered at different release kinetics matched to the biological process treated. The different beneficial agents may also be used to address different diseases, such as restenosis and acute myocardial infarction from the same drug delivery device.
1. An expandable medical device for delivery of a beneficial agent, the device comprising:
a substantially cylindrical device which is expandable from a cylinder having a first diameter to a cylinder having a second diameter;
a first plurality of openings formed in the substantially cylindrical device containing a first beneficial agent for delivery to tissue, wherein the first beneficial agent is arranged to be delivered according to a first release curve to target a restenosis; and
a second plurality of openings formed in the substantially cylindrical device containing a second beneficial agent for delivery to tissue, wherein the second beneficial agent is arranged to be delivered according to a second release curve different from the first release curve to target a disease other than restenosis; and wherein the first beneficial agent is delivered with at least 40% of the drug delivered in the first 24 hours and the second beneficial agent delivered with less than 20% of the drug delivered in the first 24 hours.
2. The expandable medical device according to claim 1 , wherein the first beneficial agent is insulin.