Steerable device having a corewire within a tube and combination with a functional medical component
First Claim
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1. A method for using a filter element attached to a guide structure within a vessel of a patient, the method comprising:
- inserting the filter element into the vessel wherein the guide structure comprises a corewire and a tube with an inner lumen over at least substantial length of the corewire, the filter element comprises a plurality of polymer fibers in a bundle comprising a first end constrained to the corewire and a second end constrained to the tube;
deploying the filter element by moving the corewire relative to the tube to transition the filter element from a low profile configuration to an extended configuration that extends outward from the axis of the guide structure relative to the low profile configuration to form a three dimensional filtration matrix following insertion of the filter element;
delivering a distinct treatment device into the vessel over the guide structure;
performing a treatment procedure within the vessel using the distinct treatment device after the filter element is deployed to the three dimensional filtration matrix and prior to the application of suction;
transitioning the filter element from the extended configuration to a removal configuration by changing the relative positions of the corewire and the tube; and
applying suction during at least a portion of the process of transitioning of the filter element to the removal configuration through an aspiration catheter that is loaded over the guide structure.
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Abstract
An integrated guiding device has a tube and a corewire within the tube and a torque coupler. The torque coupler can couple the rotational motion of the tube with the rotational motion of the corewire. The wire can be moved longitudinally at least some amount relative to the tube. The device can further comprise a functional medical structure, such as an embolism protection structure. The device can be used in medical procedures, such as less invasive procedures within the cardiovascular system. Improved fiber based embolism protection devices comprise fiber bundles that are twisted prior to delivery.
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Citations
24 Claims
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1. A method for using a filter element attached to a guide structure within a vessel of a patient, the method comprising:
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inserting the filter element into the vessel wherein the guide structure comprises a corewire and a tube with an inner lumen over at least substantial length of the corewire, the filter element comprises a plurality of polymer fibers in a bundle comprising a first end constrained to the corewire and a second end constrained to the tube; deploying the filter element by moving the corewire relative to the tube to transition the filter element from a low profile configuration to an extended configuration that extends outward from the axis of the guide structure relative to the low profile configuration to form a three dimensional filtration matrix following insertion of the filter element; delivering a distinct treatment device into the vessel over the guide structure; performing a treatment procedure within the vessel using the distinct treatment device after the filter element is deployed to the three dimensional filtration matrix and prior to the application of suction; transitioning the filter element from the extended configuration to a removal configuration by changing the relative positions of the corewire and the tube; and applying suction during at least a portion of the process of transitioning of the filter element to the removal configuration through an aspiration catheter that is loaded over the guide structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification