IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0718105
(2003-11-19)
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발명자
/ 주소 |
- Morris,Grayson
- Lumauig,Rommel
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출원인 / 주소 |
- Advanced Cardiovascular Systems, Inc.
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
49 인용 특허 :
147 |
초록
▼
A stent pattern includes an improved portal region for repairing a main vessel and a side branch vessel forming a bifurcation. More particularly, the stent has rings aligned along a common longitudinal axis that are connected by links, where the stent has a proximal section, a distal section, and a
A stent pattern includes an improved portal region for repairing a main vessel and a side branch vessel forming a bifurcation. More particularly, the stent has rings aligned along a common longitudinal axis that are connected by links, where the stent has a proximal section, a distal section, and a central section (portal region). The number of rings and the expanded diameter of the sections are varied to create a "trap door" capable of expanding to a slightly larger diameter than the proximal section and the distal section of the stent. The configuration of the stent pattern of the portal region prevents the occurrence of portal overlap of immediately adjacent rings into the portal region during stent deployment. The stent is implanted at a bifurcation so that the proximal section and the distal section are in the main vessel, and the central section contacts at least a portion of the opening to the side branch vessel. A second stent can be implanted in the side branch vessel and abut the expanded central section to provide full coverage of the bifurcated area in the main vessel and the side branch vessel.
대표청구항
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What is claimed is: 1. A stent for repairing a bifurcated vessel, comprising: a cylindrical body having a plurality of rings aligned along a common longitudinal axis; each ring having a delivery diameter and an implanted diameter and a plurality of first peaks configured to spread apart to permit t
What is claimed is: 1. A stent for repairing a bifurcated vessel, comprising: a cylindrical body having a plurality of rings aligned along a common longitudinal axis; each ring having a delivery diameter and an implanted diameter and a plurality of first peaks configured to spread apart to permit the rings to expand radially outwardly or compress radially inwardly; the cylindrical body having a proximal section, a distal section, and a central section; at least one first peak of a central section ring is connected to at least one first peak of a proximal section ring by at least one link wherein the connected first peaks point toward each other; wherein the cylindrical body has a distal opening, a proximal opening, and a central opening, the distal opening and the proximal opening being aligned along the stent longitudinal axis; and the central opening is radially offset in a longitudinal direction with respect to the cylindrical body relative to the alignment of the distal opening and the proximal opening. 2. The stent of claim 1, wherein the rings of the proximal section have between four and twelve first peaks, the rings of the distal section have between four and twelve first peaks, and the rings of the central section have between five and fifteen first peaks. 3. The stent of claim 1, wherein the rings of the proximal section have seven first peaks, the rings of the distal section have six first peaks, and the rings of the central section have eight first peaks. 4. The stent of claim 1, wherein the number of first peaks in the ring(s) of the central section is greater than the number of first peaks in any of the rings in either the proximal section or the distal section. 5. The stent of claim 1, wherein the adjacent rings are connected by links. 6. The stent of claim 1, wherein the rings are connected by at least one link between adjacent rings. 7. The stent of claim 6, wherein at least some of the links have a straight segment. 8. The stent of claim 6, wherein at least some of the links have a curved segment. 9. The stent of claim 6, wherein at least some of the links have a straight segment and a curved segment. 10. The stent of claim 6, wherein at least some of the links have a non-linear segment. 11. The stent of claim 1, wherein each ring has at least one second peak. 12. The stent of claim 11, wherein at least some of the at least one second peaks are connected to a link. 13. The stent of claim 1, wherein the stent is formed from metal. 14. The stent of claim 13, wherein the metal is taken from the group of metals including stainless steel, titanium, nickel-titanium, cobalt-chromium, cobalt-chromium-vanadium, cobalt-chromium-tungsten, gold, silver, platinum, or platinum-iridium. 15. The stent of claim 1, wherein the at least one link has a thickness in the range from about 0.001 inch (0.025 mm) up to about 0.006 inch (0.152 mm). 16. The stent of claim 1, wherein the at least one link has a width in the range from about 0.001 inch (0.025 mm) up to about 0.006 inch (0.152 mm). 17. The stent of claim 1, wherein the at least one link has a straight segment. 18. The stent of claim 1, wherein the at least one link has a curved segment. 19. The stent of claim 1, wherein the at least one link has a straight segment and a curved segment. 20. The stent of claim 1, wherein the at least one link has a non-linear segment. 21. The stent of claim 1, wherein the number of first peaks in the ring(s) of the central section is proportional to the number of links connecting the first peaks of the central section and proximal section. 22. The stent of claim 1, wherein the central section includes one ring having eight first peaks such that one first peak of the central section is connected to one first peak of the proximal section by two links. 23. The stent of claim 1, wherein the central section includes one ring having eight first peaks such that two first peaks of the central section are each connected to one first peak of the proximal section and to one second peak of the proximal section by one link. 24. The stent of claim 1, wherein at least one first peak of the central section and at least one first peak of the proximal section are connected in an out of phase configuration. 25. The stent of claim 1, wherein the plurality of first peaks are formed of struts having a length. 26. The stent of claim 25, wherein the length of the first peaks is inversely proportional to the length of the at least one link connecting the first peaks of the central section and the proximal section. 27. The stent of claim 1, wherein the ring or rings in the central section of the stent have a corresponding set of nested peaks within the first peaks of the ring or rings of the central section. 28. The stent of claim 1, wherein the stent is coated with at least one layer of a drug. 29. The stent of claim 1, wherein the stent is coated with at least one layer of a therapeutic agent. 30. The stent of claim 1, wherein at least a portion of the stent is coated with a primer material, which adheres to the stent, the primer material being coated with at least one layer of a therapeutic agent or drug.
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