Composite guidewire
First Claim
Patent Images
1. A guidewire, comprising:
- a proximal section having a distal end, wherein the distal end of the proximal section includes a flexibility transition region;
a distal section comprising a linear-elastic nickel-titanium alloy, the distal section having a proximal end, wherein the proximal end of the distal section includes a flexibility transition region;
a connector comprising a metal alloy having a Unified Numbering System (UNS) designation of N06625 or N10276, or a nickel-molybdenum alloy designated B-2, the connector being disposed adjacent the distal end of the proximal section and the proximal end of the distal section, the connector adapted and configured for joining the proximal section to the distal section and is welded to at least the distal section; and
a polymer sleeve disposed about a portion of the distal section.
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Accused Products
Abstract
Alternative designs, materials and manufacturing methods for guidewires. Some embodiments pertain to a composite guidewire having proximal and distal section, and a connector adapted and configured for permanently joining the proximal section to the distal section. In some embodiments, at least one of the sections is made of a linear-elastic nickel-titanium alloy. Several alternative guidewire tip designs including coiled safety/shaping structures are also disclosed.
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Citations
39 Claims
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1. A guidewire, comprising:
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a proximal section having a distal end, wherein the distal end of the proximal section includes a flexibility transition region; a distal section comprising a linear-elastic nickel-titanium alloy, the distal section having a proximal end, wherein the proximal end of the distal section includes a flexibility transition region; a connector comprising a metal alloy having a Unified Numbering System (UNS) designation of N06625 or N10276, or a nickel-molybdenum alloy designated B-2, the connector being disposed adjacent the distal end of the proximal section and the proximal end of the distal section, the connector adapted and configured for joining the proximal section to the distal section and is welded to at least the distal section; and a polymer sleeve disposed about a portion of the distal section. - View Dependent Claims (2)
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3. A guidewire, comprising:
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a proximal section comprising a metal or metal alloy, the proximal section having a distal end; a distal section comprising a linear elastic nickel-titanium alloy, the distal section having a proximal end; and a connector disposed adjacent the distal end of the proximal section and the proximal end of the distal section, the connector comprising a metal alloy having a Unified Numbering System (UNS) designation of N06625, the connector being adapted and configured for permanently joining the proximal section and the distal section. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A guidewire, comprising:
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a proximal section having a distal end, wherein the distal end of the proximal section includes a flexibility transition region; a distal section comprising a linear-elastic nickel-titanium alloy, the distal section having a proximal end, wherein to proximal end of the distal section includes a flexibility transition region; a connector comprising a metal alloy having a Unified Numbering System (UNS) designation of N06625 or N10276, or a nickel-molybdenum alloy designated B-2, the connector being disposed adjacent the distal end of the proximal section and the proximal end of the distal section, the connector adapted and configured for joining to proximal section to the distal section and is welded to at least the distal section; and a first coil disposed about a portion of the distal section. - View Dependent Claims (19, 20)
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21. A guidewire, comprising:
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a proximal section comprising a metal or metal alloy, the proximal section having a distal end; a distal section comprising a linear elastic nickel-titanium alloy, the distal section having a proximal end; a connector disposed adjacent the distal end of the proximal section and the proximal end of the distal section, the connector comprising a nickel-chromium alloy, a nickel-molybdenum alloy, or a cobalt alloy, the connector being adapted and configured for permanently joining the proximal section and the distal section; and an outer structure disposed about at least a portion of the distal section, wherein the outer structure comprises a polymer sleeve. - View Dependent Claims (22, 23)
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24. A guidewire, comprising:
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a proximal section comprising a metal or metal alloy, the proximal section having a distal end; a distal section comprising a linear elastic nickel-titanium alloy, the distal section having a proximal end; a connector disposed adjacent the distal end of the proximal section and the proximal end of the distal section, the connector comprising a nickel-chromium alloy, a nickel-molybdenum alloy, or a cobalt alloy, the connector being adapted and configured for permanently joining the proximal section and the distal section; an outer structure disposed about at least a portion of the distal section, wherein the outer structure comprises a first coil disposed about a portion of the distal section; and an inner coil disposed about a portion of the distal section at least partially within the first coil, the inner coil having a distal portion that extends distally of the distal section. - View Dependent Claims (25)
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26. A guidewire, comprising:
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a proximal section comprising a metal or metal alloy, the proximal section having a distal end; a distal section comprising a linear elastic nickel-titanium alloy, the distal section having a proximal end; a connector disposed adjacent the distal end of the proximal section and the proximal end of the distal section, the connector comprising a nickel-chromium alloy, a nickel-molybdenum alloy, or a cobalt alloy, the connector being adapted and configured for permanently joining the proximal section and the distal section; an outer structure disposed about at least a portion of the distal section, wherein the outer structure comprises a first coil disposed about a portion of the distal section, and a flat ribbon attached to the distal section.
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27. A guidewire, comprising:
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a proximal section comprising a metal or metal alloy, the proximal section having a distal end; a distal section comprising a linear elastic nickel-titanium alloy, the distal section having a proximal end; and a connector disposed adjacent the distal end of the proximal section and the proximal end of the distal section, wherein the connector comprises a metal alloy having a Unified Numbering System (UNS) designation of N10276, the connector being adapted and configured for permanently joining the proximal section and the distal section.
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28. A guidewire, comprising:
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a proximal section comprising a metal or metal alloy, the proximal section having a distal end; a distal section comprising a linear elastic nickel-titanium alloy, the distal section having a proximal end; and a connector disposed adjacent the distal end of the proximal section and the proximal end of the distal section, wherein the connector comprises a nickel-molybdenum alloy designated B-2, the connector being adapted and configured for permanently joining the proximal section and the distal section.
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29. A guidewire, comprising:
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a proximal section having a distal end, wherein the distal end of the proximal section includes a flexibility transition region; a distal section comprising a linear-elastic nickel-titanium alloy, the distal section having a proximal end, wherein the proximal end of the distal section includes a flexibility transition region; and a connector comprising a metal alloy having a Unified Numbering System (UNS) designation of N06625 or N10276, or a nickel-molybdenum alloy designated B-2, the connector being disposed adjacent the distal end of the proximal section and the proximal end of the distal section, the connector adapted and configured for joining the proximal section to the distal section and is welded to at least the distal section. - View Dependent Claims (30, 31, 32, 33)
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34. A method of manufacturing a guidewire, comprising the steps of:
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providing a proximal section having a distal end; providing a distal section comprising a linear elastic nickel-titanium alloy, the distal section having a proximal end; forming flexibility transition regions in the distal end of the proximal section and the proximal end of the distal section; and connecting the distal end of the proximal section and the proximal end of the distal section using a connector, the connector comprising a nickel-chromium alloy, a nickel-molybdenum alloy, or a cobalt alloy, wherein the connector is welded to the distal section, and wherein the connector is adapted and configured for permanently joining the proximal section to the distal section; wherein the step of connecting the distal end of the proximal section and the proximal end of the distal section includes overlapping the proximal and distal ends.
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35. A guidewire, comprising:
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a core wire having a proximal section having a distal end, and a distal section having a proximal end and a distal end, the distal section including a linear elastic nickel-titanium alloy; a connector disposed adjacent the distal end of the proximal section and the proximal end of the distal section, the connector joining the proximal section to the distal section, the connector comprising a nickel-chromium alloy, a nickel-molybdenum alloy, or a cobalt alloy, the connector being welded to at least the distal section; an inner coil having a proximal region and a distal region, the proximal region of the coil connected to the distal end of the distal section, and the distal region of the coil extending distally beyond the distal end of the distal section; and an outer structure disposed about at least a portion of the distal section and the inner coil. - View Dependent Claims (36, 37, 38, 39)
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Specification