Hybrid tubular guide wire for catheters
First Claim
1. A hybrid tubular guide wire for introduction into a vessel or duct pathway to guide a catheter, if desired, to a predetermined location, comprising a first thin elongate hollow tubular section having tubular walls defining a lumen, and made of a material having a predetermined torsional stiffness and lateral flexibility, and a second thin elongate hollow tubular section having less torsional stiffness and greater lateral flexibility than the first section, said second section attached co-linearly to the first section.
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Accused Products
Abstract
A hybrid tubular wire includes first and second elongate tubular bodies, fitted end to end, and about which a catheter may be threaded for guidance to a target location in a vasculature passageway of a body. The first elongate body has greater rotational stiffness than the second elongate body, which has greater lateral flexibility. Cuts are formed either by saw-cutting, laser cutting or etching at spaced-apart locations along the length of the second elongate body to increase its lateral flexibility. At least some of the cuts extend through the tubular body to the interior cavity to allow the escape of fluids flowing in the cavity.
274 Citations
24 Claims
- 1. A hybrid tubular guide wire for introduction into a vessel or duct pathway to guide a catheter, if desired, to a predetermined location, comprising a first thin elongate hollow tubular section having tubular walls defining a lumen, and made of a material having a predetermined torsional stiffness and lateral flexibility, and a second thin elongate hollow tubular section having less torsional stiffness and greater lateral flexibility than the first section, said second section attached co-linearly to the first section.
- 21. A combination catheter/catheter guide wire comprising a first elongate hollow tubular body formed of stainless steel, and having tubular sidewalls defining a central lumen, a second elongate hollow tubular body formed of nickel-titanium alloy, and having tubular sidewalls defining a central lumen and having greater lateral flexibility than the first tubular body, said second tubular body being joined end to end with the first tubular body, said sidewalls of the second tubular body having slots formed therein along the length thereof to increase the lateral flexibility of the body, at least some of said slots extending through the sidewalls to the lumen to allow discharge therethrough of fluids flowing in the lumen.
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24. A combination catheter/catheter guide wire comprising a first elongate hollow tubular body having tubular sidewalls defining a central lumen, a second elongate hollow tubular body having tubular sidewalls defining a central lumen and having greater lateral flexibility than the first tubular body, said second tubular body being joined end to end with the first tubular body, said sidewalls of the second tubular body having slots formed therein along the length thereof to increase the lateral flexibility of the body, at least some of said slots extending through the sidewalls to the lumen to allow discharge there through of fluids flowing in the lumen, said second tubular body further comprising a plug disposed in the distal end thereof, said plug being made of a material selected from the group consisting of radiopaque material and MRI detectable material.
Specification