Hair pin IVC filter
AssigneeCook Medical Technologies LLC
InventorChristian Dela
Life of this patent
Estimating the term…
Abstract
The disclosure provides a hair pin IVC filter device and a method to retrieve said device from the vena cava. The device comprises a tubular backbone slidably disposed relative to a hub with a bore formed therethrough. A plurality of filter legs are each attached to the hub. Each filter leg has a first arcuate segment extending arcuately to a second arcuate segment. The first and second arcuate segments provide flexibility to the device when implanted for filtering in the vena cava. Upon retrieval, each filter leg may be converted from a hair pin position to a substantially straight position to remove the filter device from any endothelialized tissue.
Claims20
A filter device for filtering in a body vessel having a vessel wall and a longitudinal axis, the device comprising:
- a hub comprising a body with a bore formed therethrough defining a first opening and a second opening;
- a tubular backbone having a proximal end extending to a distal end along the longitudinal axis and a lumen formed therethrough, the tubular backbone being slidably disposed through the hub between the proximal and distal ends;
- and
- a plurality of filter legs, each filter leg comprising a first portion having a first end attached to the body and extending distally to a contact portion, the contact portion extending to a second portion having a second end removably disposed in the lumen adjacent to the distal end, the second portion having a first arcuate segment connected to the contact portion and extending arcuately to a second arcuate segment, the second arcuate segment extending arcuately to the second end.
A filter apparatus for filtering in a body vessel having a vessel wall and a longitudinal axis, the apparatus comprising:
- an inner sheath;
- a coupling member;
- and
- a filter device removably coupled to the inner sheath by way of the coupling member, the filter device comprising:
- a hub comprising a body with a bore formed therethrough defining a first opening and a second opening;
- a tubular backbone having a proximal end extending to a distal end along the longitudinal axis and a lumen formed therethrough, the tubular backbone being slidably disposed through the hub between the proximal and distal ends;
- and
- a plurality of filter legs, each filter leg comprising a first portion having a first end attached to the body and extending distally to a contact portion, the contact portion extending to a second portion having a second end removably disposed in the lumen adjacent to the distal end, the second portion having a first arcuate segment connected to the contact portion and extending arcuately to a second arcuate segment, the second arcuate segment extending arcuately to the second end.
A method of filtering in a body vessel having a vessel wall and a longitudinal axis, the method comprising:
- disposing a filter device in the body vessel, the device comprising:
- a hub comprising a body with a bore formed therethrough defining a first opening and a second opening;
- a tubular backbone having a proximal end extending to a distal end along the longitudinal axis and a lumen formed therethrough, the tubular backbone being slidably disposed through the hub between the proximal and distal ends;
- and
- a plurality of filter legs, each filter leg comprising a first portion having a first end attached to the body and extending distally to a contact portion, the contact portion extending to a second portion having a second end removably disposed in the lumen adjacent to the distal end, the second portion having a first arcuate segment connected to the contact portion and extending arcuately to a second arcuate segment, the second arcuate segment extending arcuately to the second end;
- applying a force in a proximal direction to the proximal end in the body vessel;
- moving the tubular backbone proximally relative to the hub through the first and second openings;
- moving the second end out of the lumen;
- and
- slidably removing each filter leg from the vessel wall.
Dependencies are inferred from the claim text.