SELF EXPANDING WIRE GUIDE
First Claim
1. A wire guide capable of anchoring within a body lumen, comprising:
- an elongate member comprising a first proximal end and a first distal end,an expandable anchoring portion affixed to the first distal end of the elongate member, the expandable anchoring portion comprising a second proximal end and a second distal end and a plurality of expandable members extending between the second proximal end and the second distal end, the expandable anchoring portion self-expanding from a collapsed configuration to an expanded configuration; and
one or more surface features disposed along the plurality of expandable members to anchor the expandable members to one or more walls of the body lumen when the expandable anchoring portion self-expands to the expanded configuration.
1 Assignment
0 Petitions
Accused Products
Abstract
A wire guide system and method of use are described. The wire guide system comprises a sheathing member, an elongate member, and a self-expandable expandable anchoring portion. The expandable anchoring portion is affixed to the distal end of the elongate member. Advancement of the wire guide system may be achieved by pre-loading the elongate member and the expandable anchoring portion into a lumen of the sheathing member. Upon reaching a target site within a body lumen, the sheathing member is proximally retracted so as to expose the expandable anchoring portion. Retraction of the sheathing member allows the expandable anchoring portion to radially self-expand and engage one or more walls of the body lumen so as to anchor the elongate wire in position. The elongate wire now provides a stabilized pathway for medical devices to be advanced thereover.
67 Citations
20 Claims
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1. A wire guide capable of anchoring within a body lumen, comprising:
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an elongate member comprising a first proximal end and a first distal end, an expandable anchoring portion affixed to the first distal end of the elongate member, the expandable anchoring portion comprising a second proximal end and a second distal end and a plurality of expandable members extending between the second proximal end and the second distal end, the expandable anchoring portion self-expanding from a collapsed configuration to an expanded configuration; and one or more surface features disposed along the plurality of expandable members to anchor the expandable members to one or more walls of the body lumen when the expandable anchoring portion self-expands to the expanded configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A wire guide system capable of anchoring within a body lumen, comprising:
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an elongate member comprising a first proximal end and a first distal end, an expandable anchoring portion affixed to the first distal end of the elongate member, the expandable anchoring portion comprising a plurality of expandable members extending between a second proximal end and a second distal end, the expandable anchoring portion self-expanding from a collapsed configuration to an expanded configuration; one or more surface features disposed along the plurality of expandable members to temporarily anchor the expandable members to one or more walls of the body lumen when the expandable anchoring portion self-expands to the expanded configuration; and a sheathing member disposed over the elongate member, the sheathing member adapted to retract and resheath relative to the elongate member and the expandable anchoring portion. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method of accessing a body lumen, comprising the steps of:
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(a) providing a wire guide system comprising; an elongate member having a first proximal end and a first distal end, an expandable anchoring portion affixed to the first distal end of the elongate member, the expandable anchoring portion comprising a plurality of expandable members extending between a second proximal end and a second distal end, the expandable anchoring portion self-expanding from a collapsed configuration to an expanded configuration; and a sheathing member disposed over the elongate member; (b) advancing the sheathing member and the elongate member with the expandable anchoring portion disposed therewithin to a target site of the body lumen; (c) exposing the expandable anchoring portion from within the sheathing member; (d) self-expanding the expandable anchoring portion from the collapsed configuration to the expanded configuration; and (e) engaging one or more walls of the body lumen so as to anchor the expandable anchoring portion within the body lumen. - View Dependent Claims (19, 20)
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Specification