Elongated intracorporal medical device
First Claim
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1. A medical device comprising:
- an elongated shaft;
a first coil member connected to the elongated shaft; and
a second coil member connected to the first coil, wherein the second coil is free of direct attachment to the elongated shaft.
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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 constructions and/or designs including methods and techniques of construction are also disclosed.
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Citations
43 Claims
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1. A medical device comprising:
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an elongated shaft;
a first coil member connected to the elongated shaft; and
a second coil member connected to the first coil, wherein the second coil is free of direct attachment to the elongated shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A coil construction for use in a medical device, the coil construction comprising:
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a first coil member adapted and configured for connection to the medical device; and
a second coil member connected to the first coil;
wherein, the coil construction is configured such that when the first coil member is connected to the medical device, the second coil member is free of direct attachment to any other structure within the medical device.
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10. A method of making a medical device, the method comprising:
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providing a first coil member and a second coil member;
attaching the second coil member to the first coil member;
providing an elongated shaft;
attaching the first coil member to the elongated shaft such that the second coil is free of direct attachment to the shaft. - View Dependent Claims (11, 12, 13)
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14. A guidewire comprising:
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an elongated shaft including a proximal region having a first outer diameter and a distal region having a second outer diameter that is smaller than the first outer diameter;
a first coil member connected to the elongated shaft at the proximal region and extending from the proximal region over the distal region, the first coil member having an inner diameter that is greater than the second outer diameter; and
a second coil member disposed about the distal region, and extending within and connected to the first coil member, wherein the second coil member is free of direct attachment to any other structure within the guidewire.
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15. A method of making a guidewire, the method comprising:
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providing a metallic elongated shaft;
providing a metallic structural member configured to be connected to the elongated shaft;
heating a heat activated attachment material using LASER energy;
disposing the heat activated attachment material adjacent the elongated shaft and the structural member such that it adjoins the elongated shaft and the structural member; and
allowing the heat activated attachment material to cool and attach the elongated shaft and the structural. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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24. A method of making a guidewire, the method comprising:
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providing an elongated shaft;
providing a structural member configured to be connected to the elongated shaft;
connecting the structural member to the elongated shaft using a heat activated attachment material while using LASER energy to heat the heat activated attachment material.
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25. A method of making a guidewire, the method comprising:
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providing a metallic elongated shaft;
providing a metallic structural member configured to be connected to the elongated shaft; and
LASER welding a portion of the metallic elongated shaft to the metallic structural member using energy to created the weld. - View Dependent Claims (26, 27, 28, 29)
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30. A guidewire, comprising:
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an elongated proximal section having a distal end and a proximal end;
an elongated distal section comprising a linear elastic nickel-titanium alloy, the distal section having a proximal end and a distal end; and
a tubular connector disposed adjacent the distal end of the proximal section and the proximal end of the distal section, the connector being LASER welded to both the distal end of the proximal section and the proximal end of the distal section. - View Dependent Claims (31, 32, 33, 34, 35, 36)
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37. A guidewire comprising:
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an elongated shaft including a proximal section and a distal section;
a coil member connected to the elongated shaft and being disposed over at least a portion of the distal section, the coil member comprising MP35-N, or a nickel titanium alloy. - View Dependent Claims (38, 39, 40, 41)
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42. A medical device comprising:
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an elongated shaft;
a first coil member connected to the elongated shaft; and
a second coil member; and
means for connecting the second coil member to the first coil member.
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43. A guidewire comprising:
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an elongated shaft including a proximal section and a distal section;
a tubular attachment member disposed about a portion of the shaft;
a coil member disposed over at least a portion of the distal section, the coil member being connected to the tubular attachment member.
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Specification