Distal protection device and method
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Abstract
An emboli capturing system captures emboli in a body lumen. A first elongate member has a proximal end and a distal end. An expandable emboli capturing device is mounted proximate the distal end of the first elongate member, and is movable between a radially expanded position and a radially contracted position. When in the expanded position, the emboli capturing device forms a basket with a proximally opening mouth. A second elongate member has a proximal and a distal end with a lumen extending therebetween. The lumen is sized to slidably receive a portion of the first elongate member. An expandable delivery device is mounted to the distal end of the second elongate member and is movable from a radially retracted position to a radially expanded position. The delivery device has a receiving end configured to receive the emboli capturing device, and retains at least the mouth of the emboli capturing device in a radially retracted position.
123 Citations
67 Claims
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1-59. -59. (canceled)
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60. A retrieval device for retrieving an emboli capturing device having an expandable capturing element attached to an elongate member, the retrieval device comprising:
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a first sheath having a distal end configured to receive the emboli capturing device in an expanded configuration;
a second sheath sized to be slidingly received inside the first sheath, the second sheath having a distal end and a proximal end and a lumen extending therebetween, the lumen sized to receive the elongate member but not the emboli capturing element. - View Dependent Claims (61, 62, 63)
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64. A method for removing a restriction in a blood vessel comprising:
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providing an emboli capturing device including an elongate member having an expandable emboli capturing element disposed on a distal end thereof;
inserting and advancing the emboli capturing device into a blood vessel to a position distal of the restriction;
expanding the expandable emboli capturing element;
fragmenting at least a portion of the restriction, and collecting the fragments in the emboli capturing element;
providing a retrieval device including a first sheath configured to receive the emboli collecting element in the expanded configuration, and a second sheath sized to be slidingly received inside the first sheath, the second sheath having a lumen therethrough sized to receive the elongate member but not the expandable emboli capturing element, the retrieval device including a locking mechanism to lock the elongate member within the second sheath;
inserting and advancing the retrieval device trough the blood vessel over the elongate member to the expanded emboli capturing element;
locking the elongate member to the second sheath;
sliding the second sheath and elongate member proximally within the first sheath such that the expanded emboli capturing element is within the first sheath; and
removing the elongate member and retrieval device from the blood vessel.
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65. An emboli capturing system comprising:
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an elongate member having a proximal end and a distal end;
an expandable emboli capturing device mounted proximate the distal end of the elongate member, the emboli capturing device being movable between a radially expanded position and a radially retracted position, the expandable emboli capturing device forming a net with a proximally opening mouth when in the radially expanded position;
a first sheath having a distal end configured to receive the emboli capturing device in the radially expanded configuration;
a second sheath sized to be slidingly received inside the first sheath, the second sheath having a distal end and a proximal end and a lumen extending therebetween, the lumen sized to receive the elongate member but not the emboli capturing device. - View Dependent Claims (67)
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66. The emboli capturing system of clam 65, further comprising a stop positioned on the elongate member proximal of the emboli capturing device, wherein the stop prevents the emboli capturing device from entering the lumen of the second sheath.
Specification