US 9,308,073 B2 · Vena cava filter with dual retrieval

Abstract

An intravascular filter assembly has an expanded state for capturing thrombi in a patient's blood vessel and a collapsed state for removal from the patient's blood vessel. The filter assembly includes a fixed hub defining a tubular portion, a plurality of struts extending from a first axial side of the tubular portion of the fixed hub, and an axially movable hub. The struts have an expanded configuration and a collapsed configuration. The axially movable hub has a first position radially surrounding at least an axial portion of the tubular portion and a second position axially spaced apart from the fixed hub along the struts. The struts are in the collapsed configuration when the movable hub is in the second position. A first coupling member extends from the first axial side from the movable hub; and a second coupling member extends from a second axial side opposite the first axial side.

Claims20

Dependent claims

An intravascular filter assembly having an expanded state for capturing thrombi in a patient's blood vessel and a collapsed state for removal from the patient's blood vessel, the filter assembly comprising:

a fixed hub defining a tubular portion, the tubular portion having a second axial side comprising a stopper;
a plurality of struts extending from a first axial side of the tubular portion of the fixed hub, the struts having an expanded configuration when the filter is in the expanded state and a collapsed configuration when the filter is in the collapsed state;
an axially movable hub having a first position radially surrounding at least an axial portion of the tubular portion and a second position axially spaced apart from the fixed hub along the struts, the struts being in the collapsed configuration when the movable hub is in the second position, the stopper disposed outside of the movable hub;
a first coupling member extending from a first axial side of the movable hub;
and
a second coupling member extending from a second axial side of the movable hub opposite the first axial side of the movable hub.

3 more elements

A method of removing an intravascular filter assembly from a body vessel, the filter assembly having a fixed hub defining a tubular portion, the tubular portion having a second axial side comprising a stopper;

a plurality of struts extending from a first axial side of the tubular portion of the fixed hub, the struts having an expanded configuration when the filter is in an expanded state and a collapsed configuration when the filter is in a collapsed state;
an axially movable hub having a first position radially surrounding at least an axial portion of the tubular portion and a second position axially spaced apart from the fixed hub along the struts, the struts being in the collapsed configuration when the movable hub is in the second position, the stopper disposed outside of the movable hub;
a first coupling member extending from a first axial side of the movable hub;
and a second coupling member extending from a second axial side of the movable hub opposite the first axial side of the movable hub;
the method comprising the steps of:
inserting a recovery sheath with a lumen into the body vessel from the first axial side;
placing a recovery tool within the lumen of the recovery sheath and moving it distally toward the filter assembly;
engaging the first coupling member with the recovery tool;
placing a push tool within the lumen of the recovery sheath and moving it distally toward the filter assembly;
abutting and retaining the fixed hub at a fixed location;
pulling the movable hub off the tubular portion along the struts until the movable hub is in the second position and the struts are in the collapsed configuration;
proximally removing the push tool;
causing a relative movement between the filter assembly and the recovery sheath in a direction that causes the filter assembly to enter the lumen of the recovery sheath;
and
proximally removing the recovery sheath including the filter assembly.

12 more elements

Dependencies are inferred from the claim text.

Vena cava filter with dual retrieval

Life of this patent

Vena cava filter with dual retrieval

Life of this patent

Abstract

Claims20