Conical vena cava filter with jugular or femoral retrieval

摘要

An intravascular filter configured for upstream or downstream retrieval and a method for retrieving an intravascular filter from a patient's vena cava through the patient's femoral vein. The filter includes a downstream hub, an upstream hub, a plurality of primary struts extending from the downstream hub to the upstream hub, a plurality of secondary struts extending upstream from fixed ends housed in the downstream hub to free ends, secondary strut eyelets disposed at the free ends of the secondary struts, a loop member disposed through the secondary strut eyelets, an upstream coupling element disposed with the upstream hub, and a tether extending from the loop member to the upstream coupling element.

主权项

1. An intravascular filter configured for upstream retrieval, the filter comprising:
a downstream hub and an upstream hub disposed along a longitudinal axis of the filter; a plurality of primary struts having downstream and upstream ends, the downstream hub housing the downstream ends of the primary struts, the upstream hub housing the upstream ends of the primary struts; a plurality of secondary struts having fixed and free ends, the downstream hub housing the fixed ends of the secondary struts, the secondary struts extending upstream from the downstream hub to the free ends, the free ends being disposed longitudinally between the downstream hub and the upstream hub, each secondary strut having a secondary strut eyelet disposed at its free end; a loop member disposed through the secondary strut eyelets; an upstream coupling element extending from a first end to a second end, the first end spaced apart from and terminating upstream of the downstream hub, the second end disposed adjacent the upstream hub, the upstream coupling element disposed with the upstream hub for upstream retrieval of the filter; and a tether directly connected to the loop member and extending to the upstream coupling element.