ARTICULATING RETRIEVAL DEVICE
First Claim
1. A retrieval device for removing a foreign object from a body lumen, comprising:
- a flexible coil movable between a first position and a second position within a body lumen, the flexible coil adapted to assume a substantially straight shape in the first position and an expanded shape forming one or more loops in the second position; and
a core wire operatively coupled to the flexible coil, the core wire having a proximal section and a distal section;
wherein the core wire is located externally to the flexible coil.
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0 Petitions
Accused Products
Abstract
Device and methods for removing a foreign object from a body lumen are disclosed. A retrieval device in accordance with an exemplary embodiment of the present invention may include an elongated member including a flexible collector element, and a core wire that can be engaged by the physician to actuate the collector element between a first position and a second position with the body. The collector element may comprise a coiled section including a coiled flat ribbon adapted to assume a substantially straight shape in the first position and an expanded shape forming one or more helically oriented loops in the second position. The collector element may also comprise one or more fibers operatively coupled to the coiled section.
103 Citations
35 Claims
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1. A retrieval device for removing a foreign object from a body lumen, comprising:
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a flexible coil movable between a first position and a second position within a body lumen, the flexible coil adapted to assume a substantially straight shape in the first position and an expanded shape forming one or more loops in the second position; and a core wire operatively coupled to the flexible coil, the core wire having a proximal section and a distal section; wherein the core wire is located externally to the flexible coil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A retrieval device for removing a foreign object from a body lumen, comprising:
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an elongated member including a flexible coil movable between a first position and a second position within a body lumen, the flexible coil adapted to assume a substantially straight shape in the first position and an expanded shape forming a plurality of helically oriented loops in the second position; a core wire operatively coupled to the flexible coil, the core wire having a proximal section and a distal section; wherein the core wire is located externally to the flexible coil; one or more fibers each operatively coupled at a plurality of locations to the flexible coil, each fiber adapted to constrain longitudinal movement of the flexible coil in the second position; and an actuator mechanism operatively coupled to the proximal section of the core wire. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A method for removing a foreign object from a body lumen comprising the steps of:
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providing a retrieval device having an elongated member including a flexible coil movable between a first collapsed position and a second expanded position in response to an axial force applied to a core wire operatively coupled to the flexible coil, where the retrieval device further includes one or more fibers adapted to limit longitudinal movement of the flexible coil operatively coupled to the flexible coil; introducing the retrieval device into a body lumen with the flexible coil in the collapsed position; applying an axial force to the core wire to move the flexible coil into the expanded position; capturing a foreign object within the body lumen; and removing the retrieval device and captured foreign object from the body lumen.
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34. The method of step 33, wherein the retrieval device is further provided with an actuator mechanism operatively coupled to the core wire.
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35. The method of step 34, wherein the axial force is applied using said actuator mechanism.
Specification