Vein Filter

• US 20110160764A1
• Filed: 03/03/2011
• Published: 06/30/2011
• Est. Priority Date: 09/27/2004
• Status: Active Grant

• Current Assignee: Argon Medical Devices
• Original Assignee: REX Medical LP
• Inventors: Thinnes, John H. JR., McGuckin, James F. JR.
• Granted Patent: US 8,920,458 B2
• Time in Patent Office: Days
• US Class Current: 606/200
• CPC Class Codes: A61F 2/0105 Open ended, i.e. legs gathered only at one side
• CPC Class Codes: A61F 2/012 Multiple filtering units
• CPC Class Codes: A61F 2002/016 made from wire-like elements
• CPC Class Codes: A61F 2002/018 made from tubes or sheets of material, e.g. by etching or laser-cutting
• CPC Class Codes: A61F 2002/8486 provided on at least one of the ends
• CPC Class Codes: A61F 2230/005 Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/008 paraboloidal
• CPC Class Codes: A61F 2230/0093 Umbrella-shaped, e.g. mushroom-shaped

Abstract

A vessel filter having a first region having a first set of struts forming a mounting portion and a filter portion having a converging region at a first portion to direct particles toward the center of the filter. The mounting portion is flared in the expanded position to have a transverse dimension increasing toward a second portion opposite the first portion. A second set of struts forms a second mounting portion flared in the expanded position. A plurality of spaced apart struts extend between the first and second regions.

Claims

1-19. -19. (canceled)

20. A vessel filter comprising a body cut from a tube, the body being integral and having a first region and a second region, the body movable between a collapsed position for delivery to the vessel and an expanded position for placement within the vessel, the first region having a first set of spaced apart struts forming a first filter portion having a first converging region converging into a first tubular portion and a first mounting region for mounting the filter, the second region formed by a second set of spaced apart struts, the second region having a second converging region converging into a second tubular portion axially spaced from the first tubular portion, the second set of struts being positioned proximal of the first set of struts, the first and second set of struts being connected by a plurality of longitudinally extending struts extending between the first and second tubular portions, and the first and second sets of struts extending in a first direction.

21. The vessel filter of claim 20, wherein the longitudinally extending struts are spaced apart to form longitudinally extending gaps therebetween formed by cuts in the tube.

22. The vessel filter of claim 20, wherein adjacent struts of the first set of struts are joined by a connecting strut.

23. The vessel filter of claim 20, wherein struts of the first set of struts include vessel engaging members.

24. The vessel filter of claim 20, wherein struts of the second set of struts include vessel engaging members.

25. The vessel filter of claim 24, wherein struts of the first set of struts include vessel engaging members.

26. The vessel filter of claim 20, wherein the tube is composed of shape memory material.

27. The vessel filter of claim 20, wherein at least two adjacent struts of the first set of struts are interconnected by strut portions extending toward one another, and the at least two adjacent struts interconnect at a first joining region and then bifurcate into two interconnecting struts, wherein interconnecting struts of adjacent struts join at a second joining region.

28. The vessel filter of claim 20, wherein the second region includes a retrieval region, the retrieval region including a hook having a cutout exposing an internal annular surface, the annular surface dimensioned to receive a portion of a retrieval sheath.

29. The vessel filter of claim 28, wherein the retrieval region includes a radiused region having first and second curved surfaces extending distally inwardly.

30. The vessel filter of claim 20, wherein adjacent struts of the first set of struts are interconnected to form a series of closed cells in one region such that the number of closed cells corresponds to the number of first struts extending from the first tubular portion.

31. The vessel filter of claim 20, wherein the axial spacing of the first and second tubular portions corresponds to a length of struts of the second region.

32. The vessel filter of claim 20, wherein the struts of the second region terminate proximally of the first converging region and proximally of the first tubular portion.

33. The vessel filter of claim 20, further comprising a retrieval hook formed in the second tubular portion.

34. The vessel filter of claim 20, wherein in the collapsed position, the filter is in a tubular configuration.

35. The vessel filter of claim 20, wherein the body has a series of cutouts from which the first and second sets of struts emerge in the expanded position.

36. The vessel filter of claim 20, wherein in the collapsed position, the body includes a first set of cutouts axially spaced from a second set of cutouts, the first tubular portion being positioned between the first and second sets of cutouts.

37. The vessel filter of claim 32, wherein the axial spacing of the first and second tubular portions corresponds to a length of struts of the second region.

38. The vessel filter of claim 32, wherein in the collapsed position, the filter is in a tubular configuration.

39. The vessel filter of claim 37, wherein the body has a series of cutouts from which the first and second sets of struts emerge in the expanded position.