Lumen diameter reference guidewire
First Claim
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1. A lumen diameter reference guidewire comprising:
- a central core wire;
a coiled spring wire surrounding a distal portion of said core wire;
a tip member;
said coiled spring wire being fixed at its distal end to said tip member;
said guidewire having in a non-tapered distal area thereof immediately proximal of the coiled spring wire, a plurality of markers which are highly radiopaque, each marker having the same precise width which is a precise fraction of a millimeter and which is designated "x" and having predetermined millimeter distances between adjacent markers, the predetermined distances varying in precise increments from marker to marker with the distance between the closest edges of the first two adjacent markers in a direction proximally from a distal end of said guidewire being 4x and the distance between the furthest edges of the two adjacent markers being 6x, so that the markers provide a scale to a physician whereby the physician can accurately determine distances inside a blood vessel using the markers independently or in conjunction with each other.
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Abstract
The lumen diameter reference guidewire comprises: a central core wire; a coiled spring wire surrounding a distal portion of the core wire; a tip member; the coiled spring wire being fixed at its distal end to the tip member; and, the guidewire having in an distal area thereof proximal of the coiled spring wire, a plurality of markers which are highly radiopaque, each marker having the same precise length and the distance between adjacent markers varying from marker to marker.
136 Citations
10 Claims
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1. A lumen diameter reference guidewire comprising:
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a central core wire; a coiled spring wire surrounding a distal portion of said core wire; a tip member; said coiled spring wire being fixed at its distal end to said tip member; said guidewire having in a non-tapered distal area thereof immediately proximal of the coiled spring wire, a plurality of markers which are highly radiopaque, each marker having the same precise width which is a precise fraction of a millimeter and which is designated "x" and having predetermined millimeter distances between adjacent markers, the predetermined distances varying in precise increments from marker to marker with the distance between the closest edges of the first two adjacent markers in a direction proximally from a distal end of said guidewire being 4x and the distance between the furthest edges of the two adjacent markers being 6x, so that the markers provide a scale to a physician whereby the physician can accurately determine distances inside a blood vessel using the markers independently or in conjunction with each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification