Stent with nested fingers for enhanced vessel coverage
View Patent ↗A stent having a lattice and defining a substantially cylindrical configuration has a first open end and a second open end. The lattice has a collapsed configuration and an expanded configuration and a plurality of adjacent hoops. Each hoop has a plurality of adjacent loops and a plurality of bridges connect adjacent hoops. A plurality of extensions are provided on the lattice. And, each of the hoops, bridges and extensions define a cell.
1. A stent comprising:
a lattice defining a substantially cylindrical configuration having a first open end and a second open end, the lattice having a crimped state and an expanded configuration, the lattice having a plurality of adjacent loops; a plurality of bridges connecting adjacent hoops; a plurality of extensions on the lattice; and each of the hoops, bridges and extensions defining a cell and wherein in the expanded configuration, the plurality of extensions extend into the cell defining a maximum cell diameter, the extensions having one end integrally formed with the lattice and another end extending into the cell and wherein the stent in the expanded configuration has a maximum expanded cell diameter ranging from about 0.76 mm to about 1.22 mm due to the plurality of extensions.
2. The stent according to claim 1 , wherein the maximum expanded diameter ranges from about 0.91 mm to about 1.22 mm.
3. The stent according to claim 1 , wherein the maximum expanded cell diameter ranges from about 0.76 mm to about 1.02 mm.
4. The stent according to claim 1 , wherein the stent has a maximum cell diameter ranging from about 1.5 mm to about 3.5 mm when the cell is dilated.
5. The stent according to claim 4 , wherein the stent has a maximum cell diameter ranging from about 1.5 mm to about 3.0 mm when the cell dilated.
6. The stent according to claim 4 , wherein the stent has as a closed cell design.
7. The stent according to claim 1 , wherein the stent has a maximum cell diameter ranging from about 3.0 mm to about 3.5 mm when the cell is dilated.
8. The stent according to claim 1 , wherein the stent has a maximum cell diameter of up to about 3.5 mm when the cell is dilated.
9. The stent according to claim 8 , wherein the stent has as an open cell design.
10. The stent according to claim 1 , wherein the stent has a maximum cell diameter of approximately 3.0 mm when the cell is dilated.
11. The stent according to claim 1 , wherein the stent has a maximum cell diameter ranging from about 3.0 mm to about 3.5 mm when the cell is dilated.
12. The stent according to claim 1 , wherein each hoop comprises a plurality of struts.
13. The stent according to claim 1 , wherein the extensions are located on the bridges.
14. The stent according to claim 1 , wherein the extensions are located on the hoops.
15. The stent according to claim 14 , wherein the extensions are located on the loops.
16. The stent according to claim 14 , wherein the extensions are located on the struts.
17. The stent according to claim 16 , wherein the extensions are located on at least one of the loops and the struts.
18. The stent according to claim 17 , wherein the extensions are located on the bridges.
19. The stent according to claim 1 , further comprising a drug on one or more portions of the lattice.
20. The stent according to claim 19 , further comprising a drug and polymer combination on one or more portions of the lattice.
21. The stent according to claim 20 , wherein the drug comprises rapamycin.
22. The stent according to claim 20 , wherein the drug comprises paclitaxel.
23. The stent according to claim 1 , wherein the extensions do not plastically deform during expansion of the stent.
24. The stent according to claim 1 , wherein the end of the extension extending into the cell does not contact any other part of the stent structure.
25. The stent according to claim 1 , wherein the extensions decrease maximum circular cell diameter size by about 54%.