Guidewire with smoothly tapered segment
First Claim
Patent Images
1. A guidewire comprising:
- an elongate core member having a proximal section and a distal section;
wherein the distal section includes at least one flexible segment having at least two opposed faces which are distally tapered in a mirror image relationship to each other so as to form a tapered segment;
at least a portion of the at least one flexible segment includes a substantially round transverse cross-sectional area wherein a first transverse dimension is greater than a second transverse dimension;
the distally tapered portion of the at least one flexible segment has a generally square cross-section with a height and width, neither the height nor the width increasing toward the distal end;
a flexible body member having a proximal end and a distal end which is disposed about at least a portion of the distal section of the elongate core member; and
wherein the distal end of the flexible body member is secured to the distal end of the distal section of the elongate core member.
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Abstract
A guidewire for intraluminal advancement of a medical device within a patient which has an elongate core member with a flexible body member disposed on a distal section thereof. In one embodiment, the distal section of the elongate core member has at least one flexible segment with at least one pair of opposed tapered or parallel faces. Preferably the flexible segment with the tapered or parallel faces is disposed at the distal end of the elongate core and forms a shapable segment.
164 Citations
20 Claims
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1. A guidewire comprising:
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an elongate core member having a proximal section and a distal section;
wherein the distal section includes at least one flexible segment having at least two opposed faces which are distally tapered in a mirror image relationship to each other so as to form a tapered segment;
at least a portion of the at least one flexible segment includes a substantially round transverse cross-sectional area wherein a first transverse dimension is greater than a second transverse dimension;
the distally tapered portion of the at least one flexible segment has a generally square cross-section with a height and width, neither the height nor the width increasing toward the distal end;
a flexible body member having a proximal end and a distal end which is disposed about at least a portion of the distal section of the elongate core member; and
wherein the distal end of the flexible body member is secured to the distal end of the distal section of the elongate core member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A guidewire comprising:
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an elongate core member having a proximal section and a distal section;
wherein the distal section includes at least one flexible segment having at least two opposed faces which are distally tapered in a mirror image relationship to each other so as to form a tapered segment;
the at least one flexible segment includes a generally square cross sectional shape at a proximal end;
at least a portion of the at least one flexible segment includes a substantially round transverse cross-sectional area wherein a first transverse dimension is greater than a second transverse dimension;
the distally tapered portion of the at least one flexible segment has a generally square cross-section with a height and width, neither the height nor the width increasing toward the distal end;
a flexible body member having a proximal end and a distal end which is disposed about at least a portion of the distal section of the elongate core member; and
wherein the distal end of the flexible body member is secured to the distal end of the distal section of the elongate core member.
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20. A guidewire comprising:
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an elongate core member having a proximal section and a distal section;
wherein the distal section includes at least one flexible segment having at least two opposed faces which are distally tapered in a mirror image relationship to each other so as to form a tapered segment;
the at least one flexible segment includes a generally square cross sectional shape at a proximal end;
at least a portion of the at least one flexible segment includes a substantially round transverse cross-sectional area wherein a first transverse dimension is greater than a second transverse dimension;
the distally tapered portion of the at least one flexible segment has a generally square cross-section with a height and width, neither the height nor the width increasing toward the distal end;
a flexible body member having a proximal end and a distal end which is disposed about at least a portion of the distal section of the elongate core member; and
wherein the proximal end of the flexible body member is joined to the elongate core member at a junction, the junction being formed at an intermediate position on the flexible segment.
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Specification