Guidewire having linear change in stiffness
First Claim
1. An intracorporeal device comprising an elongated member having a substantially linear change in stiffness over a longitudinal length thereof.
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0 Petitions
Accused Products
Abstract
The invention is directed to a guidewire having a distal section with multiple distally tapered core segments with at least two contiguous distally tapering core segments in which the most distal tapered core segment preferably has a greater degree of taper than the proximally contiguous tapered core segment. The invention is also directed to an elongated intracorporeal device, preferably a guidewire or section thereof, that has a core member or the like with a plurality of contiguous tapered segments having taper angles that are configured to produce a linear change in stiffness over a longitudinal section of the device. The device may also have a core section with a continuously changing taper angle to produce a curvilinear profile that preferably is configured to produce a linear change in stiffness of the core over a longitudinal section of the device.
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Citations
61 Claims
- 1. An intracorporeal device comprising an elongated member having a substantially linear change in stiffness over a longitudinal length thereof.
- 11. A guidewire comprising an elongate core member with at least one longitudinal section having a substantially linear change in stiffness over a length thereof.
- 29. A guidewire comprising an elongate core member having at least one longitudinal section with a continuously changing taper angle yielding a curvilinear profile.
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33. An elongated guidewire comprising:
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a) an elongated core member having proximal and distal core sections, with the distal core section having a first tapered core segment having an angle of taper and a distally contiguous second tapered core segment which is longer than the first tapered core segment and which has an angle of taper greater than the angle of taper of the first tapered core segment; and
b) a flexible body disposed about and secured to the distal core section. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
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50. An elongated guidewire which comprises:
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a) an elongated core member having a proximal core section and a distal core section with at least two contiguous tapered segments including a tapered proximal segment and a tapered distal segment, the tapered distal segment having a taper angle of up to about 0.44° and
greater than the taper of the tapered proximal segment; and
b) a flexible body disposed about and secured to the distal core section. - View Dependent Claims (51, 52, 53, 54)
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55. An elongated guidewire which comprises:
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a) an elongated core member having a proximal core section and a distal core section with at least two contiguous tapered segments, a tapered proximal segment and a tapered distal segment having a length greater than the tapered proximal segment and at least about 2 cm; and
b) a helical coil secured to at least a portion of the distal core section. - View Dependent Claims (56, 57, 58, 59)
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60. An elongated guidewire which comprises:
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a) an elongated core member having a proximal core section and a distal core section, with the distal core section having at least one tapered core segment that has a length of at least about 1 cm and has a continuously changing taper substantially along the entire length of a curved exterior surface; and
b) a flexible body secured to the distal core section. - View Dependent Claims (61)
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Specification