Coated endovascular AAA device
View Patent ↗Medical devices, and in particular implantable medical devices, may be coated to minimize or substantially eliminate a biological organism's reaction to the introduction of the medical device to the organism. The medical devices may be coated with any number of biocompatible materials. Therapeutic drugs, agents or compounds may be mixed with the biocompatible materials and affixed to at least a portion of the medical device. These therapeutic drugs, agents or compounds may also further reduce a biological organism's reaction to the introduction of the medical device to the organism. In addition, these therapeutic drugs, agents and/or compounds may be utilized to promote healing, including the formation of blood clots. Various materials and coating methodologies may be utilized to maintain the drugs, agents or compounds on the medical device until delivered and positioned.
1. A system for bypassing an aneurysm comprising:
at least one prosthesis for establishing a fluid flow path through an aneurysmal section of artery:
an anchoring element operatively associated with the at least one prosthesis for securing and sealing the at least one prosthesis upstream of the aneurismal section of artery, the anchoring element including a support lattice and a sealing material covering the support lattice, the sealing material impeding blood flow around the anchoring element,
a biocompatible vehicle affixed to at least one of the anchoring element and the at least one prosthesis, the biocompatible vehicle comprises a polyfluoro copolymer comprising polymerized residue of a first moiety selected from the group consisting of vinylidenefluoride and tetrafluoroethylene, and polymerized residue of a second moiety other than the first moiety and which is copolymerized with the first moiety, thereby producing the polyfluoro copolymer, wherein the relative amounts of the polymerized residue of the first moiety and the polymerized residue of the second moiety are effective to produce the biocompatible vehicle with properties effective for use in coating implantable medical devices when the coated medical device is subjected to a predetermined maximum temperature, and a solvent in which the polyfluoro copolymer is substantially soluble; and
at least one agent in therapeutic dosages incorporated into the biocompatible material for the promotion of a wound healing response.
2. The system for bypassing an aneurysm according to claim 1 , wherein the at least one prosthesis comprises a stent-graft.
3. The system for bypassing an aneurysm according to claim 2 , wherein the stent-graft comprises a stent and a graft material secured to at least a portion of the stent.
4. The system for bypassing an aneurysm according to claim 3 , wherein the stent is self-expanding.
5. The system for bypassing an aneurysm according to claim 4 , wherein the graft material comprises a polymeric material.
6. The system for bypassing an aneurysm according to claim 5 , wherein the anchoring element comprises a scaffold structure at least partially covered with a gasket material substantially impervious to blood.
7. The system for bypassing an aneurysm according to claim 1 , wherein the polyfluoro copolymer comprises from about fifty to about ninety-two weight percent of the polymerized residue of the first moiety copolymerized with from about fifty to about eight weight percent of the polymerized residue of the second moiety.
8. The system for bypassing an aneurysm according to claim 1 , wherein said polyfluoro copolymer comprises from about fifty to about eighty-five weight percent of the polymerized residue of vinylidenefluoride copolymerized with from about fifty to about fifteen weight percent of the polymerized residue of the second moiety.
9. The system for bypassing an aneurysm according to claim 1 , wherein said copolymer comprises from about fifty-five to about sixty-five weight percent of the polymerized residue of the vinylidenefluoride copolymerized with from about forty-five to about thirty-five weight percent of the polymerized residue of the second moiety.
10. The system for bypassing an aneurysm according to claim 1 , wherein the second moiety is selected from the group consisting of hexafluoropropylene, tetrafluoroethylene, vinylidenefluoride, 1-hydropentafluoropropylene, perfluoro (methyl vinyl ether), chlorotrifluoroethylene, pentafluoropropene, trifluoroethylene, hexafluoroacetone and hexafluoroisobutylene.
11. The system for bypassing an aneurysm according to claim 1 , wherein the second moiety is hexafluoropropylene.
12. The system for bypassing an aneurysm according to claim 1 , wherein the at least one agent comprises a growth factor.
13. The system for bypassing an aneurysm according to claim 12 , wherein the growth factor comprises Platelet-derived Growth Factor.
14. The system for bypassing an aneurysm according to claim 12 , wherein the growth factor comprises Transforming Growth Factor-β.
15. The system for bypassing an aneurysm according to claim 1 , wherein the at least one agent comprises Transforming Growth Factor-β and collagen.
16. The system for bypassing an aneurysm according to claim 1 , wherein the at least one agent comprises Tissue Factor/VIIa.
17. The system for bypassing an aneurysm according to claim 1 , wherein the at least one agent comprises collagen.
18. The system for bypassing an aneurysm according to claim 1 , wherein the at least one agent comprises thrombus formation compounds.