Expandable medical device for delivery of beneficial agent
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61F-002/06
출원번호
UP-0273916
(2005-11-14)
등록번호
US-7850727
(2011-02-10)
발명자
/ 주소
Shanley, John F.
출원인 / 주소
Innovational Holdings, LLC
인용정보
피인용 횟수 :
13인용 특허 :
386
초록▼
An expandable medical device has a plurality of elongated struts joined together to form a substantially cylindrical device which is expandable from a cylinder having a first diameter to a cylinder having a second diameter. At least one of the plurality of struts includes at least one opening extend
An expandable medical device has a plurality of elongated struts joined together to form a substantially cylindrical device which is expandable from a cylinder having a first diameter to a cylinder having a second diameter. At least one of the plurality of struts includes at least one opening extending at least partially through a thickness of the strut. A beneficial agent is loaded into the opening within the strut in layers to achieve desired temporal release kinetics of the agent. Alternatively, the beneficial agent is loaded in a shape which is configured to achieve the desired agent delivery profile. A wide variety of delivery profiles can be achieved including zero order, pulsatile, increasing, decreasing, sinusoidal, and other delivery profiles.
대표청구항▼
The invention claimed is: 1. An expandable medical device comprising: a plurality of struts interconnected to form a substantially cylindrical device which is expandable from a cylinder having a first diameter to a cylinder having a second diameter; and a beneficial agent and carrier affixed to the
The invention claimed is: 1. An expandable medical device comprising: a plurality of struts interconnected to form a substantially cylindrical device which is expandable from a cylinder having a first diameter to a cylinder having a second diameter; and a beneficial agent and carrier affixed to the plurality of struts and configured and arranged to control the release kinetics of the beneficial agent to surrounding tissue, wherein the release kinetics include an increasing agent release profile. 2. The device of claim 1, wherein the beneficial agent is paclitaxel. 3. The device of claim 2, wherein the carrier includes a barrier layer. 4. The device of claim 2, wherein the carrier is biodegradable. 5. The device of claim 2, wherein the paclitaxel and carrier are configured and arranged so that the paclitaxel is 100% discharged from the device. 6. The device of claim 1, wherein the beneficial agent is an anti-restenotic agent. 7. The device of claim 1, wherein the beneficial agent is an antithrombin. 8. The device of claim 1, wherein the beneficial agent is an anti-inflammatory. 9. The device of claim 1, wherein the carrier includes a barrier layer. 10. The device of claim 9, wherein the increasing agent release profile when plotted as cumulative agent released versus time provides a curved line with die rate of release of agent increasing over time. 11. The device of claim 1, wherein the carrier is biodegradable. 12. The device of claim 1, wherein the beneficial agent and carrier are configured and arranged so that the beneficial agent is 100% discharged from the device. 13. The device of claim 1, wherein the release kinetics of the beneficial agent to surrounding tissue includes an increasing mural agent release profile. 14. An expandable medical device comprising: a plurality of struts interconnected to form a substantially cylindrical device which is expandable from a cylinder having a first diameter to a cylinder having a second diameter; a beneficial agent and biodegradable carrier affixed to the plurality of struts and configured and arranged to control the temporal release kinetics of the beneficial agent to surrounding tissue, wherein said release kinetics include on increasing agent release profile and 100% discharge of the beneficial agent from the device. 15. The device of claim 14, wherein the beneficial agent is paclitaxel. 16. The device of claim 14, wherein the beneficial agent is an anti-restenotic agent. 17. The device of claim 14, wherein the beneficial agent is an antithrombin. 18. The device of claim 14, wherein the beneficial agent is an anti-inflammatory. 19. The device of claim 14, wherein the increasing agent release profile when plotted as cumulative agent released versus time provides a curved line with the rate of release of agent increasing over time. 20. The device of claim 14, wherein the release kinetics of the beneficial agent to surrounding tissue includes an increasing mural agent release profile. 21. A method of forming an expandable medical device comprising: providing an expandable medical device with a plurality of struts interconnected to form a substantially cylindrical device which is expandable from a cylinder having a first diameter to a cylinder having a second diameter; applying a solution of beneficial agent, biodegradable carrier layer, and solvent to the device and evaporating the solvent to form a solid beneficial agent and carrier layer; and wherein the beneficial agent and carrier layer are configured and arranged to release the beneficial agent with an increasing agent release profile and 100% discharge of the beneficial agent from the device. 22. The device of claim 21, wherein the beneficial agent is paclitaxel. 23. The device of claim 21, wherein the beneficial agent is an anti-restenotic agent. 24. The device of claim 21, wherein the beneficial agent is an antithrombin. 25. The device of claim 21, wherein the beneficial agent is an anti-inflammatory. 26. The device of claim 21, wherein the increasing agent release profile when plotted as cumulative agent released versus time provides a curved line with the rate of release of agent increasing over time. 27. The method of claim 21, wherein forming a layer with an increasing agent release profile comprises forming a layer with art increasing mural agent release profile. 28. An expandable medical device comprising: a plurality of struts interconnected to form a substantially cylindrical device which is expandable from a cylinder having a first diameter to a cylinder having a second diameter; a beneficial agent and carrier affixed to the plurality of struts and configured and arranged to control the temporal release kinetics of the beneficial agent to surrounding tissue, wherein release kinetics include a two part release profile with both an increasing agent release profile and a decreasing agent release profile. 29. The device of claim 28, wherein the beneficial agent is paclitaxel. 30. The device of claim 28, wherein the beneficial agent is an anti-restenotic agent. 31. The device of claim 28, wherein the beneficial agent is an antithrombin. 32. The device of claim 28, wherein The beneficial agent is an anti-inflammatory. 33. The device of claim 28, wherein the two part release profile when plotted as cumulative agent released versus time provides an S-shaped line with the rate of release of agent both increasing and decreasing over time. 34. The device of claim 28, wherein the release kinetics of the beneficial agent to surrounding tissue includes an increasing mural agent release profile and a decreasing mural agent release profile.
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