Embolic filter devices, systems, and methods for capturing emboli during medical procedures

摘要

One aspect of the present disclosure relates to an embolic filter device configured for placement in a blood vessel to capture emboli during a medical procedure. The embolic filter device can include an expandable frame member and a membrane. The expandable frame member can include a radial support member operably connected to first and second longitudinal struts, and an engaging portion extending between the first and second longitudinal struts. The engaging portion can be shaped and configured to temporarily receive, and sealingly mate with, a portion of an endovascular catheter during the medical procedure. The membrane can be securely connected to the frame member and define a collection chamber for captured emboli. The membrane can be configured to cover substantially all of the cross-sectional area of the blood vessel when the embolic filter device is deployed in the blood vessel.

主权项

1. An embolic filter device configured for placement in a blood vessel to capture emboli during a medical procedure, said embolic filter device comprising:
an expandable frame member including a radial support member operably connected to first and second longitudinal struts and an engaging portion extending between said first and second longitudinal struts, said engaging portion being shaped and configured to temporarily receive, and sealingly mate with, a portion of an endovascular catheter during the medical procedure; a membrane securely connected to said frame member and defining a collection chamber for captured emboli, said membrane being configured to cover substantially all of the cross-sectional area of the blood vessel when said embolic filter device is deployed in the blood vessel; and a deployable snare mechanism configured to capture the endovascular catheter and selectively mate a portion of the endovascular catheter with said engaging portion, said deployable snare mechanism comprising a lasso portion configured to selectively engage and constrict about an outer surface of the endovascular catheter; wherein constriction of said lasso portion causes said lasso portion to twist and cinch about the outer surface of the endovascular catheter such that said engaging portion sealingly mates with the endovascular catheter.