Guide wires, catheters, and guide wire catheter systems and methods
First Claim
1. A system comprising:
- a catheter having a catheter tip, a proximal portion, and a distal portion;
a guide wire configured for advancing a device having a longitudinal lumen diameter through a vasculature, the guide wire comprising;
an elongated member having a proximal end and a distal end; and
an enlargement being disposed on the distal end of the elongated member, the enlargement being spaced proximally from a distal tip of the distal end of the elongated member, the enlargement having a dimension larger than the distal tip and the longitudinal lumen diameter of the device,wherein an outer diameter of the enlargement is configured to be greater than an outer diameter of the catheter tip, the enlargement enlarges radially from the catheter tip along a longitudinal axis of the enlargement, andwherein the enlargement is adapted to move the device away from an obstruction or the vasculature.
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Accused Products
Abstract
Guide wires, systems and methods can improve advancement through the vasculature, particularly when the catheter tip encounters resistance or an obstruction and cannot advance. The guide wire can include an enlargement spaced proximally from a distal tip of the elongated member alone or in combination with a configured portion of the wire. The configured guide wire can be positioned in the vasculature and a medical device such as a catheter can track over the guide wire. The catheter can get caught-up in the vasculature or on implanted devices during advancement. When that occurs, the configured guide wire can be retracted back to the catheter tip and the guide wire configuration can cause the catheter distal tip to move and/or deflect away from the obstruction or resistance allowing the system to advance. The guide wire can be returned to its distal position and the procedure can continue.
204 Citations
48 Claims
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1. A system comprising:
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a catheter having a catheter tip, a proximal portion, and a distal portion; a guide wire configured for advancing a device having a longitudinal lumen diameter through a vasculature, the guide wire comprising; an elongated member having a proximal end and a distal end; and an enlargement being disposed on the distal end of the elongated member, the enlargement being spaced proximally from a distal tip of the distal end of the elongated member, the enlargement having a dimension larger than the distal tip and the longitudinal lumen diameter of the device, wherein an outer diameter of the enlargement is configured to be greater than an outer diameter of the catheter tip, the enlargement enlarges radially from the catheter tip along a longitudinal axis of the enlargement, and wherein the enlargement is adapted to move the device away from an obstruction or the vasculature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A method of navigating through vasculature, comprising:
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advancing a guide wire through a vessel, the guide wire having a substantially uniform outer diameter, and the guide wire having a distal portion that includes a radial bulge; advancing a catheter over the guide wire, the catheter having a proximal end and a distal end, wherein the radial bulge is larger than the distal end of the catheter; encountering a vascular obstruction hindering advancement of the catheter; and withdrawing the guide wire through the catheter to position the radial bulge in contact with the distal end of the catheter, wherein the step of withdrawing allows the distal end of the catheter to be displaced away from the vascular obstruction to allow advancement of the catheter. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45)
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46. A guide wire configured for advancing a device having a longitudinal lumen diameter through a vasculature, the guide wire comprising:
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an elongated member having a proximal end and a distal end; an enlargement being disposed on the distal end of the elongated member, the enlargement being spaced proximally from a distal tip of the distal end of the elongated member, the enlargement having a dimension larger than the distal tip and the longitudinal lumen diameter of the device; and a sinusoidal curve disposed proximate the enlargement on a proximal side of the enlargement, wherein an outer diameter of the enlargement is configured to be greater than an outer diameter of a catheter tip, the enlargement enlarges radially from the catheter tip, wherein the enlargement is adapted to move the device away from an obstruction or the vasculature. - View Dependent Claims (47, 48)
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Specification