Emboli capturing device and method of manufacture therefor

• US 20040210250A1
• Filed: 05/10/2004
• Published: 10/21/2004
• Est. Priority Date: 10/05/2001
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Original Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Inventors: Eskuri, Alan
• Granted Patent: US 7,320,698 B2
• Time in Patent Office: Days
• US Class Current: 606/200
• CPC Class Codes: A61F 2/0108 Both ends closed, i.e. legs gathered at both ends
• 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 2230/0006 circular
• CPC Class Codes: A61F 2230/006 Y-shaped
• CPC Class Codes: A61F 2230/008 paraboloidal
• CPC Class Codes: A61F 2230/0093 Umbrella-shaped, e.g. mushroom-shaped

Abstract

An intravascular filter device comprising a frame having an open configuration and a closed configuration, the frame comprising a plurality of elongate members each having a proximal end and a distal end, and a proximal region and a distal region and being fixedly connected at the proximal end to each other; and a filter having an open end and a closed end disposed on the frame; wherein the elongate members have a bend distal the proximal region and a helical curve over a substantial length of the distal region when the elongate members are in the open configuration.

Claims

1-29. -29. (Cancelled).

30. An intravascular filter device comprising:

a frame having an open configuration and a closed configuration, the frame comprising a plurality of elongate members each having a proximal end and a distal end, and a proximal region and a distal region and being fixedly connected at the proximal end to each other; and

a filter having an open end and a closed end disposed on the frame;

wherein the elongate members have a bend distal the proximal region and a helical curve over a substantial length of the distal region when the elongate members are in the open configuration.

31. The intravascular filter device of claim 30, wherein the elongate members are made from a flexible material.

32. The intravascular filter device of claim 31, wherein the flexible material is Nitinol.

33. The intravascular filter device of claim 30, wherein the helical curve in the elongate members is formed into the members.

34. The intravascular filter device of claim 30, further comprising a second bend distal the first bend, wherein the helical curve in the elongate members is created by the filter or a vessel lumen constraining the elongate members from fully expanding in the open configuration.

35. The intravascular filter device of claim 30, wherein means for attaching the device to a wire exist proximate the proximal end.

36. The intravascular filter device of claim 30, wherein the open end of the filter is proximal the closed end of the filter.

37. The intravascular filter device of claim 30, wherein the open end of the filter is distal the closed end of the filter.

38. The intravascular filter device of claim 30, wherein means for disposing the device on a catheter exist proximate the proximal end of the elongate members.

39. The intravascular filter device of claim 30, wherein the filter is attached to a plurality of the elongate members proximate the open end of the filter.

40. The intravascular filter device of claim 35, further comprising a tip disposed on the distal end of the wire.

41. The intravascular filter device of claim 40, wherein the tip is a spring tip.

42. The intravascular filter device of claim 30, wherein the distal end of the device is attached to a wire.

43. The intravascular filter device of claim 30, wherein the distal end of the device is slideably disposed on a wire.

44. The intravascular filter device of claim 30, wherein the proximal end of the device includes means for slideably disposing the device on a wire.

45. The intravascular filter device of claim 30, further comprising a collar fixedly attached to the proximal end of the elongate members.

46. The intravascular filter device of claim 30, wherein the distal end of an elongate member overlaps the proximal end of an adjacent elongate member when the device is viewed from a distal end view.

47. The intravascular filter device of claim 40, wherein the collar and the elongate members are formed of a single tubular member having an outer diameter and an inner diameter.

48. The intravascular filter device of claim 47, wherein the inner diameter of the tubular member is between about 0.015 inches and about 0.017 inches;

and

the outer diameter of the tubular member is between about 0.022 inches and about 0.024 inches.

49. The intravascular filter device of claim 47 further comprising a catheter wherein the collar and the catheter are formed of a single tubular member.

50. The intravascular filter device of claim 30, wherein one bend of an elongate member is distal another bend in an elongate member.

51. An intravascular filter device having a collapsed configuration and an expanded configuration, comprising:

an elongate member;

a filter having an inlet lumen and a filter wall, the filter disposed on the elongate member;

a plurality of struts, each strut having a first portion and a second portion,

wherein, in the expanded configuration, the first portions radiate outwards from the elongate member, and the second portions support the filter inlet lumen and extend in a circumferential direction.

52. The intravascular filter device of claim 51, wherein in the expanded configuration, the second portions cause the filter inlet lumen to assume a substantially circular shape.

53. The intravascular filter device of claim 51, wherein the second portions are disposed within the filter.

54. The intravascular filter device of claim 53, wherein the second portions exert an outward radial force on the filter.

55. The intravascular filter device of claim 54, wherein each second portion extends over a circumferential section of the filter in the expanded configuration.

56. The intravascular filter device of claim 55, wherein the plurality of second portions extend around the circumference of the filter in the expanded configuration.

57. The intravascular filter of claim 51, wherein the second portions have a spiral shape in the expanded configuration.