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US 8,137,293 B2Granted
Guidewires including a porous nickel-titanium alloy
AssigneeBoston Scientific Scimed, Inc.
InventorsPu Zhou, Horng-Ban Lin, Hancun Chen, James Feng
Life of this patent
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Abstract
Medical devices and methods for making and using the same are disclosed. An example medical device may include a guidewire. The guidewire may include an elongate shaft. The shaft may include a porous metal alloy. The porous metal alloy may be arranged so that the porous metal alloy has a first pore distribution along a first portion of the shaft and a second pore distribution different from the first pore distribution along a second portion of the shaft.
Claims17
A guidewire, comprising:
- an elongate shaft including a porous metal alloy, the shaft having a wall with a plurality of pores dispersed radially throughout;
- wherein the plurality of pores are distributed throughout an axial cross-section of the shaft;
- and
- wherein the porous metal alloy is arranged so that the porous metal alloy has a first pore distribution along a first portion of the shaft and a second pore distribution different from the first pore distribution along a second portion of the shaft, wherein the first portion of the shaft is disposed radially inward relative to the second portion of the shaft
- wherein the first portion has a first flexibility and the second portion has a second flexibility different from the first flexibility.
2 more elements
A guidewire, comprising:
- an elongate core wire;
- a tubular member disposed over a portion of the core wire, the tubular member having a plurality of slots formed therein;
- wherein the tubular member includes a porous nickel-titanium alloy, wherein the porous nickel-titanium alloy includes a first group of pores having a first configuration and a second group of pores having a second configuration different from the first configuration, and wherein the first group of pores includes pores having a diameter of 0.5-10 microns;
- and
- wherein the first group of pores are distributed through an axial cross-section of the tubular member
- wherein the pores in the first configuration provide the tubular member with a first flexibility and the pores in the second configuration provide the tubular member with a second flexibility different from the first flexibility.
3 more elements
A guidewire, comprising:
- an elongate shaft including a porous metal alloy;
- wherein the shaft includes a first portion having a first pore distribution and a second portion having a second pore distribution different from the first pore distribution, wherein the first pore distribution includes pores having a diameter of 5-30 microns;
- wherein the pores of the first pore distribution are distributed through an axial cross-section of the shaft;
- and
- wherein the first pore distribution provides the first portion with a first flexibility and the second pore distribution provides the second portion with a second flexibility different from the first flexibility.
2 more elements
Dependencies are inferred from the claim text.