Medical device for crossing an occlusion in a vessel
First Claim
Patent Images
1. A medical guidewire comprising:
- an elongated core member including an outer surface;
an intermediate member helically surrounding at least a portion of the core member, the intermediate member including an outer surface, wherein the intermediate member is disposed at a first pitch about at least a portion of the core member; and
a coil member surrounding at least a portion of the outer surface of the intermediate member and at least a portion of the outer surface of the core member, at least a portion of the coil member including an undulating outer surface defined by the coil member tracking the outer surface of the intermediate member, wherein the coil member is disposed at a second pitch about at least a portion of the outer surface of the intermediate member, wherein the first pitch is relatively loose compared to the second pitch, wherein the undulating outer surface has a third pitch corresponding to the first pitch of the intermediate member.
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Accused Products
Abstract
The invention provides design, material, manufacturing method, and use alternatives for medical devices. An example medical device includes an elongated core member including an outer surface, an intermediate member disposed about at least a portion of the outer surface of the core member, and a coil disposed about at least a portion of the intermediate member in the distal region. At least a portion of an outer surface of the coil can include an undulating surface in a portion of the distal region.
562 Citations
28 Claims
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1. A medical guidewire comprising:
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an elongated core member including an outer surface; an intermediate member helically surrounding at least a portion of the core member, the intermediate member including an outer surface, wherein the intermediate member is disposed at a first pitch about at least a portion of the core member; and a coil member surrounding at least a portion of the outer surface of the intermediate member and at least a portion of the outer surface of the core member, at least a portion of the coil member including an undulating outer surface defined by the coil member tracking the outer surface of the intermediate member, wherein the coil member is disposed at a second pitch about at least a portion of the outer surface of the intermediate member, wherein the first pitch is relatively loose compared to the second pitch, wherein the undulating outer surface has a third pitch corresponding to the first pitch of the intermediate member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A medical guidewire comprising:
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an elongated core member including a proximal region and a distal region, the elongate member having an outer surface; a ribbon helically disposed about at least a portion of the outer surface of the core member, wherein the ribbon has a generally flat cross-sectional shape, the ribbon disposed at a first pitch, the ribbon having an outer surface; and a coil member disposed about at least a portion of the outer surface of the ribbon and at least a portion of the outer surface of the core member, the coil member disposed at a second pitch different than the first pitch, at least a portion of the coil member including an undulating outer surface defining a helical shaped threading structure having a third pitch that corresponds to the first pitch. - View Dependent Claims (14, 15, 16, 17)
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18. A medical guidewire comprising:
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an elongated core member including an outer surface; an intermediate member helically surrounding at least a portion of the core member, the intermediate member including an outer surface, wherein the intermediate member is disposed at a first pitch around at least a portion of the core member, the intermediate member having a length; and a coil member surrounding the outer surface of the intermediate member for the length of the intermediate member and at least a portion of the outer surface of the core member, at least a portion of the coil member including an undulating outer surface defined by one or more windings of the coil member having a radially offset position relative to other windings of the coil member, the coil member tracking the outer surface of the intermediate member, wherein the coil member is disposed at a second pitch around the outer surface of the intermediate member, wherein the first pitch is relatively loose compared to the second pitch. - View Dependent Claims (19, 20, 21, 22)
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23. A medical guidewire comprising:
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an elongated core member including a proximal region and a distal region, the elongate core member including an outer surface, wherein the elongate core member has one or more tapered portions in the distal region.; an intermediate member helically surrounding at least a portion of the core member, the intermediate member including an outer surface, wherein the intermediate member includes a proximal end disposed adjacent to or distal of a proximal end of the one or more tapered portions of the distal region of the elongate core member; and a coil member surrounding the outer surface of the intermediate member and at least a portion of the outer surface of the core member, wherein the coil member includes a proximal end disposed proximal of the proximal end of the intermediate member and a distal end disposed adjacent to or distal of the distal end of the intermediate member, at least a portion of the coil member including an undulating outer surface defined by the coil member tracking the outer surface of the intermediate member such that, along a cross-section of the guidewire, the coil member is disposed at a non-uniform radial distance from the outer surface of the elongate member. - View Dependent Claims (24, 25, 26)
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27. A medical guidewire comprising:
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an elongated core member including a proximal region and a distal region, the elongate member having an outer surface; a ribbon helically disposed about at least a portion of the outer surface of the core member, wherein the ribbon has a generally flat cross-sectional shape, the ribbon disposed at a first pitch, the ribbon having an outer surface; and a coil member including rounded edges wound around at least a portion of the outer surface of the ribbon and at least a portion of the outer surface of the core member, the coil member disposed at a second pitch different than the first pitch, an outer surface of the coil member including first undulations defined by the rounded edges of the coil member, the first undulations having the second pitch, the outer surface of the coil member including second undulations defined at least in part by the ribbon, the second undulations having a third pitch corresponding to the first pitch. - View Dependent Claims (28)
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Specification