DEVICES FOR RESTORING BLOOD FLOW WITHIN BLOCKED VASCULATURE

• US 20070197103A1
• Filed: 03/09/2007
• Published: 08/23/2007
• Est. Priority Date: 02/03/2006
• Status: Abandoned Application

• Current Assignee: Lazarus Effect, Inc. (Medtronic Plc)
• Original Assignee: Lazarus Effect, Inc. (Medtronic Plc)
• Inventors: Martin, Brian, Dieck, Martin
• Application Number:
  US11/684,541
• Publication Number:
  US 20070197103A1
• Time in Patent Office: Days
• US Class Current: 439/676
• CPC Class Codes: A61B 17/22012 in direct contact with, or very close to, the obstruction or concrement for removing obstructions in blood vessels by laser A61B18/245
• CPC Class Codes: A61B 17/221 Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions surgical snare instruments A61B17/32056
• CPC Class Codes: A61B 17/32056 Surgical snare instruments for removing or smashing calculi A61B2017/2212; tonsillotomes A61B17/26
• CPC Class Codes: A61B 17/320725 with radially expandable cutting or abrading elements A61B17/32075 takes precedence
• CPC Class Codes: A61B 2017/00778 Operations on blood vessels A61B2017/22097, A61B2017/320741 take precedence
• CPC Class Codes: A61B 2017/00853 low friction, hydrophobic and corrosion-resistant fluorocarbon resin coating (ptf, ptfe, polytetrafluoroethylene)
• CPC Class Codes: A61B 2017/00862 elastic or resilient
• CPC Class Codes: A61B 2017/00867 shape memory effect
• CPC Class Codes: A61B 2017/22034 for gripping the obstruction or the tissue part from inside
• CPC Class Codes: A61B 2017/22051 with an inflatable part, e.g. balloon, for positioning, blocking, or immobilisation A61B2017/22048, A61B2017/3486 take precedence
• CPC Class Codes: A61B 2017/22094 for crossing total occlusions, i.e. piercing
• CPC Class Codes: A61B 2017/2212 having a closed distal end, e.g. a loop
• CPC Class Codes: A61B 2017/2215 having an open distal end

Abstract

The devices and methods described herein relate to clearing of blockages within body lumens, such as the vasculature, by addressing the frictional resistance on the obstruction prior to attempting to translate and/or mobilize the obstruction within the body lumen.

Claims

1-62. -62. (canceled)

63. An intravascular apparatus for removing an obstruction from a vessel of a patient, the device comprising:

a microcatheter having a size and flexibility to navigate within a neurovascular region of the patient;

a first and second near connector, each being self expanding and having a first expanded profile when unconstrained, such that on deployment in the vessel the near connectors expand towards the first expanded profile;

at least a first far connector, being collapsible to fit within the microcatheter and having a second expanded profile when unconstrained, such that on deployment in the vessel the far connectors expand towards the second expanded profile and expands within the vessel;

at least one lead filament coupling at least one of the near connectors to the microcatheter;

a plurality of first filaments extending between the first near and first far connector;

a plurality of second traversing filaments extending between the second near and first far connector;

where rotation of the first near connector relative to the second near connector causes the first and second traversing filaments to form a mesh shape.

64. The intravascular apparatus of claim 63, farther comprising a second far connector where a first portion of the plurality of second traversing elements extend to the first far connector and a second portion of the plurality of second traversing elements extend to the second far connector, the first near and first far connectors are coaxial with the second near and second far connectors.

65. The intravascular apparatus of claim 63, further comprising a blood permeable member affixed to the far connector, the blood permeable member being collapsible to fit within the microcatheter.

66. The intravascular apparatus of claim 65, where the blood permeable member comprises a structure selected from the group consisting of a basket, a filter, a bag, a coil, a helical wire structure, a mesh, a corrugated sheet, a braided wires, a single wound wire, a plurality of crossing wires, a tube, a membranes, and a film.

67. The intravascular apparatus of claim 65, further comprising a plurality of hook shaped members located on the blood permeable member.

68. The intravascular apparatus of claim 63, where the expanded profile of the near connectors comprise a shape selected from a circle, an arcuate shape, a partial circular shape, a loop, an oval, a square, a rectangle, a polygon, an overlapping loop, a pair of semi-circles, a flower shape, and a FIG. 8.

69. The intravascular apparatus of claim 63, where the expanded profile of the far connectors a shape selected from a circle, an arcuate shape, a partial circular shape, a loop, an oval, a square, a rectangle, a polygon, an overlapping loop, a pair of semi-circles, a flower shape, and a FIG. 8.

70. The intravascular apparatus of claim 63, further comprising a plurality of hook shaped members located on at least one filament.

71. The intravascular apparatus of claim 63, where the near connectors are collapsible to fit within the microcatheter.

72. The intravascular apparatus of claim 63, where at least one of the near connectors is affixed to an exterior of the microcatheter.

73. The intravascular apparatus of claim 63, where the near connectors comprise a plurality of near connector portions.

74. The intravascular apparatus of claim 73, where at least one of the near connector portions is axially spaced from another near connector portion.

75. The intravascular apparatus of claim 63, where the first far connector comprises a plurality of far connector portions.

76. The intravascular apparatus of claim 75, where at least one of the far connector portions is axially spaced from another far connector portion.

77. The intravascular apparatus of claim 63, further comprising at least one support ring within the filament.

78. The intravascular apparatus of claim 63, where the near connector, the lead filament, and the plurality of traversing filaments, are collapsible to fit within the microcatheter and are self-expanding upon deployment from the micro catheter.

79-167. -167. (canceled)