Migration resistant embolic filter

摘要

An embolic filter is disclosed and can include a head. A plurality of bent legs can extend from the head. Each bent leg can be configured to engage an inner wall of a vein and prevent the embolic filter from migrating in a cranial direction. A plurality of straight legs can also extend from the head. Each straight leg can be configured to prevent the embolic filter from migrating in a caudal direction.

主权项

1. An embolic filter, comprising:
a) a head having a proximal end and a distal end; b) a plurality of appendages extending distally from the head distal end including a plurality of arms, a first plurality of legs that are longer than the arms, the first plurality of legs including a plurality of bent legs, wherein each bent leg has a leg distal end providing a curved anchor with a curved portion, said curved anchor configured to engage an inner wall of a vein and prevent the embolic filter from migrating in a cranial direction, each bent leg having a bend that is positioned in between the leg curved anchor and the head, so that the curved anchor is not the location of the bend; c) a second plurality of legs that are longer than the arms and including a plurality of straight legs extending from the head, wherein each straight leg has a distal end with a caudal anchor that is configured to engage an inner wall of a vein to prevent the embolic filter from migrating in a caudal direction; and d) wherein the curved anchor of the bent legs is of a different configuration as compared to the caudal anchor of the straight legs.