Vascular embolic filter exchange devices and methods of use thereof

• US 20050171573A1
• Filed: 03/29/2005
• Published: 08/04/2005
• Est. Priority Date: 10/19/2001
• Status: Active Grant

• Current Assignee: Amr Salahieh, Jackson Demond, Jeff Krolik
• Original Assignee: Amr Salahieh, Jackson Demond, Jeff Krolik
• Inventors: Krolik, Jeff, Demond, Jackson, Salahieh, Amr
• Granted Patent: US 7,981,134 B2
• Time in Patent Office: Days
• US Class Current: 606/200
• CPC Class Codes: A61F 2/011 Instruments for their placement or removal
• CPC Class Codes: A61F 2002/018 made from tubes or sheets of material, e.g. by etching or laser-cutting
• CPC Class Codes: A61F 2230/0008 elliptical or oval
• CPC Class Codes: A61F 2230/008 paraboloidal

Abstract

Vascular embolic filtering systems, as well as methods for using the same, are provided. In general, the subject invention includes a system comprised of an embolic filter assembly and a multiple lumen delivery and retrieval sheath, where the embolic filter assembly includes a guide wire with an embolic filter operatively coupled to the distal end of the guide wire for capturing emboli created during interventional procedures within a target vessel. Features of the subject invention provide for the rapid exchange and deployment of embolic filters in a patient'"'"'s vasculature.

Claims

1-52. -52. (canceled)

53. A system for exchanging embolic filters within a vessel, the system comprising:

a first embolic filter coupled to a first guidewire;

a second embolic filter coupled to a second guidewire; and

a delivery and retrieval sheath having a plurality of lumens, wherein the first and second guidewires are translatable in the plurality of lumens.

54. The system of claim 53, wherein each of the first and second embolic filters comprises a blood permeable sac having a proximal opening.

55. The system of claim 54, wherein each of the first and second embolic filters further comprises a support hoop defining the proximal opening.

56. The system of claim 55, wherein the support hoop is self-expanding.

57. The system of claim 55, wherein each of the first and second embolic filters further comprises a suspension strut coupled between the support hoop and the guidewire of the respective embolic filter.

58. The system of claim 53, wherein each of the first and second embolic filters is concentrically coupled to the first and second guidewires respectively.

59. The system of claim 53, wherein the delivery and retrieval sheath comprises a first tubular member having a proximal end, a distal end and a lumen extending therethrough, and a second tubular member having a proximal end, a distal end and a lumen extending therethrough.

60. The system of claim 59, wherein the first and second tubular members are disposed adjacent to each other.

61. The system of claim 59, wherein the distal end of the first tubular member terminates at substantially the same location as the distal end of the second tubular member.

62. The system of claim 59, wherein the distal end of the first tubular member terminates proximal of the distal end of the second tubular member.

63. The system of claim 59, wherein the delivery and retrieval sheath includes a third lumen.

64. The system of claim 59, wherein the first embolic filter is disposed in the first tubular member and the second embolic filter is disposed in the second tubular member.

65. A system for exchanging embolic filters within a vessel, the system comprising:

a delivery and retrieval sheath including a fist tubular member having a proximal end, a distal end and a lumen extending therethrough, and a second tubular member having a proximal end, a distal end and a lumen extending therethrough;

a first embolic filter disposed in the lumen of the first tubular member, and

a second embolic filter disposed in the lumen of the second tubular member.

66. The system of claim 65, further comprising a first guidewire disposed in the lumen of the first tubular member, the first embolic filter coupled to the first guidewire.

67. The system of claim 66, further comprising a second guidewire disposed in the lumen of the second tubular member, the second embolic filter coupled to the second guidewire.

68. The system of claim 65, wherein the distal end of the first tubular member terminates at substantially the same location as the distal end of the second tubular member.

69. The system of claim 65, wherein the distal end of the first tubular member terminates proximal of the distal end of the second tubular member.

70. The system of claim 65, wherein the distal end of each of the first and second tubular members has a chamfered edge.

71. The system of claim 65, wherein the first tubular member is disposed adjacent to the second tubular member.

72. The system of claim 65, wherein each of the first and second embolic filters comprises a blood permeable sac.

73. The system of claim 72, wherein each of the first and second embolic filters further comprises a support hoop which defines an opening in the blood permeable sac.