Multiple diameter guidewire
First Claim
Patent Images
1. A guidewire for use in an anatomy of a patient, the guidewire comprising:
- a core wire that extends from a position adjacent a distal end of the guidewire to a position adjacent a proximal end of the guidewire, the core wire having a distal section and a proximal section;
the distal section including a portion having an outside diameter that is greater than an outside diameter of the proximal section;
the distal section having a length configured to extend from a first position adjacent a target site in the anatomy to a second position outside the patient during use;
wherein the proximal section is 50% or more of a total length of the guidewire;
wherein the distal section of the core wire has a length that is in the range of about 6 to about 18 inches;
wherein the proximal section is more flexible than the distal section.
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Abstract
A guidewire can include a shaft or core wire that has a distal section configured for access to a vascular treatment site and a proximal section configured for intervention at a vascular treatment site. At least a portion of the distal section of the shaft or core wire can have a diameter that is greater than a diameter of the proximal section.
188 Citations
18 Claims
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1. A guidewire for use in an anatomy of a patient, the guidewire comprising:
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a core wire that extends from a position adjacent a distal end of the guidewire to a position adjacent a proximal end of the guidewire, the core wire having a distal section and a proximal section; the distal section including a portion having an outside diameter that is greater than an outside diameter of the proximal section; the distal section having a length configured to extend from a first position adjacent a target site in the anatomy to a second position outside the patient during use; wherein the proximal section is 50% or more of a total length of the guidewire; wherein the distal section of the core wire has a length that is in the range of about 6 to about 18 inches;
wherein the proximal section is more flexible than the distal section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of accessing a treatment site within an anatomy of a patient, the method comprising:
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providing a guidewire including an elongate shaft having a proximal section and a distal section, the distal section including a portion having an outside diameter that is greater than an outside diameter of the proximal section and a length configured to extend from a first position adjacent a target site within the anatomy to a second position outside the patient, and the proximal section also having a length configured to extend from the first position adjacent the target site within the anatomy of the patient to the second position outside the patient wherein the proximal section is more flexible than the distal section; inserting the distal section through an access point in the anatomy of the patient; advancing the distal section within the anatomy until the distal section extends from the first position adjacent the target site within the anatomy to the second position outside the patient; and advancing the proximal section within the anatomy until the proximal section extends from the first position adjacent the target site within the anatomy to the second position outside the patient, wherein the distal section is advanced distally of the treatment site within the anatomy. - View Dependent Claims (17, 18)
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Specification