Vascular filters, deflectors, and methods
View Patent ↗Vascular filters and deflectors and methods for filtering bodily fluids. A blood filtering assembly can capture embolic material dislodged or generated during an endovascular procedure to inhibit or prevent the material from entering the cerebral vasculature. A blood deflecting assembly can deflect embolic material dislodged or generated during an endovascular procedure to inhibit or prevent the material from entering the cerebral vasculature.
1. A method of inhibiting embolic material from entering cerebral vasculature, the method comprising:
positioning a guidewire in a left subclavian artery upstream of a left vertebral artery;
tracking a distal portion of a protection device over the guidewire, the distal portion of the protection device comprising:
an outer sheath;
an inner member radially inward of the outer sheath, the inner member comprising a guidewire lumen; and
a self-expanding filter assembly radially between the outer sheath and the inner member;
at least one of proximally retracting the outer sheath and distally advancing the self-expanding filter assembly to deploy the self-expanding filter assembly from the outers heath in the left subclavian artery upstream of the left vertebral artery;
after deploying the self-expanding filter assembly, the inner member prolapses into an aortic arch;
performing an endovascular procedure, the deployed self-expanding filter assembly inhibiting embolic material from entering cerebral vasculature through the left vertebral artery during the endovascular procedure; and
after performing the endovascular procedure, withdrawing the self-expanding filter assembly from the left subclavian artery.
2. The method of claim 1 , further comprising proximally retracting the inner member out of the aortic arch while the deployed self-expanding filter assembly remains in the left subclavian artery upstream of the left vertebral artery.
3. The method of claim 1 , further comprising monitoring arterial pressure using the outer sheath.
4. The method of claim 1 , further comprising providing fluid through the outer sheath.
5. The method of claim 1 , further comprising positioning a filtering device in an innominate artery and a left common carotid artery, the filtering device inhibiting embolic material from entering cerebral vasculature through a right vertebral artery, a right common carotid artery, and the left common carotid artery during the endovascular procedure.
6. The method of claim 1 , wherein the self-expanding filter assembly has a diameter between 7 mm and 12 mm.
7. The method of claim 1 , wherein the self-expanding filter assembly has a diameter between 2 mm and 4.5 mm.
8. The method of claim 1 , wherein the endovascular procedure being a mitral or aortic valve implantation or replacement.
9. A method of inhibiting embolic material from entering cerebral vasculature, the method comprising:
positioning a distal portion of a protection device at a location, the location being in the left subclavian artery, the distal portion of the protection device comprising:
an outer sheath; and
a self-expanding filter assembly or a self-expanding deflector assembly radially inward of the outer sheath;
an inner member radially inward of the outer sheath, wherein the inner member comprises a guidewire lumen; and
deploying the self-expanding filter assembly or self-expanding deflector assembly from the outer sheath at the location, the deployed self-expanding filter assembly or self-expanding deflector assembly inhibiting embolic material from entering cerebral vasculature during an endovascular procedure; and
after deploying the self-expanding filter assembly or self-expanding deflector assembly, the inner member prolapses into an aortic arch.
10. The method of claim 9 , wherein positioning the distal portion of the protection device at the location comprises tracking the distal portion of the protection device over a guidewire.
11. The method of claim 9 , further comprising monitoring arterial pressure using at least one of the inner member and the outer sheath.
12. The method of claim 9 , wherein the distal portion of the protection device comprises the self-expanding filter assembly.
13. The method of claim 9 , wherein the distal portion of the protection device comprises the self-expanding deflector assembly.
14. The method of claim 9 , wherein the endovascular procedure comprises atrial valve or mitral valve implantation or replacement.
15. The method of claim 9 , wherein deploying the self-expanding filter assembly or self-expanding deflector assembly comprises proximally retracting the outer sheath.
16. The method of claim 9 , further comprising proximally retracting the inner member out of the aortic arch while the deployed self-expanding filter assembly or self-expanding deflector assembly remains in the location.
17. The method of claim 9 , further comprising positioning a filtering device in an innominate artery and a left common carotid artery, the filtering device inhibiting embolic material from entering cerebral vasculature through a right vertebral artery, a right common carotid artery, and the left common carotid artery during the endovascular procedure.
18. The method of claim 9 , wherein the self-expanding filter assembly has a diameter between 7 mm and 12 mm.
19. The method of claim 9 , wherein the self-expanding filter assembly has a diameter between 2 mm and 4.5 mm.
20. The method of claim 9 , further comprising monitoring arterial pressure.