Radiopaque manipulation devices
First Claim
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1. A medical manipulation device, comprising:
- a control rod;
a retrieval device attached to the control rod, the retrieval device comprising a plurality of retrieving elements, the retrieving elements made from at least one radiopaque wire and a plurality of shape memory wires; and
a sheath, configured so that when the sheath is retracted or the retrieval device is extended, the retrieval device extends from the sheath, wherein the at least one radiopaque wire comprises a superelastic radiopaque alloy with from about 3 to about 14 percent opacifying element, and either about 50 percent titanium and the balance nickel, or with about 50 percent nickel and the balance titanium.
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Abstract
A radiopaque component is included in manipulation and retrieval devices useful for kidney and bile stones. These devices may include a retriever or manipulator, to remove a stone or other object from a body. Metallic three component alloys of Ni—Ti and at least a third metal are useful for their radiopacity. Manipulators, graspers, nets, jaws, and other retrieval devices or end-effectors may be made with such alloys.
354 Citations
20 Claims
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1. A medical manipulation device, comprising:
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a control rod;
a retrieval device attached to the control rod, the retrieval device comprising a plurality of retrieving elements, the retrieving elements made from at least one radiopaque wire and a plurality of shape memory wires; and
a sheath, configured so that when the sheath is retracted or the retrieval device is extended, the retrieval device extends from the sheath, wherein the at least one radiopaque wire comprises a superelastic radiopaque alloy with from about 3 to about 14 percent opacifying element, and either about 50 percent titanium and the balance nickel, or with about 50 percent nickel and the balance titanium. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A medical manipulation device, comprising:
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a control rod;
a retrieval device attached to the control rod, the retrieval device comprising a plurality of retrieving elements, the retrieving elements made from at least one radiopaque wire and a plurality of shape memory wires; and
a sheath, configured so that when the sheath is retracted or the retrieval device is extended, the retrieval device extends from the sheath, wherein the at least one radiopaque wire comprises one of an alloy containing 49.8 to 51.5 atomic percent nickel, 0.5 to 2% percent opacifying element, and the balance titanium, an alloy containing 49.0 to 51.0 atomic percent nickel, 2 to 20 percent opacifying element, and the balance titanium, an alloy containing about 34 to 49 atomic percent nickel, about 3 to 14 percent opacifying element, and the balance titanium, ASTM F562 alloy, L605 alloy, UNS R30605 alloy, AMS 5537 alloy, AMS 5759G alloy, and AMS 5796B alloy. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A medical manipulation device, comprising:
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a control rod;
a retrieval device attached to the control rod, the retrieval device comprising a plurality of retrieving elements, the retrieving elements made from at least one radiopaque wire and a plurality of shape memory wires; and
a sheath, configured so that when the sheath is retracted or the retrieval device is extended, the retrieval device extends from the sheath, wherein the at least one radiopaque wire comprises a superelastic radiopaque alloy with 34 to 49 atomic percent nickel, from 3 to 14 percent palladium, and the balance titanium. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification