Systems, methods and devices for removing obstructions from a blood vessel
First Claim
Patent Images
1. A method of removing an obstruction from a blood vessel, comprising the steps of:
- providing an obstruction removing element having an expandable portion which is movable from a collapsed position to an expanded position, the obstruction removing element also having a proximal portion and means for stopping distal advancement of the proximal portion of the element to prevent expansion of the obstruction engaging element beyond the expanded position, the preventing means being coupled to the proximal portion of the element;
advancing the obstruction removing element into the obstruction with the obstruction removing element in the collapsed position;
permitting the obstruction removing element to move toward the expanded shape after the advancing step; and
moving the obstruction removing element proximally to engage the obstruction, the preventing means preventing distal displacement of the proximal portion of the element relative to the insertion element when the obstruction removing element is moved proximally.
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Accused Products
Abstract
Devices and methods for removing an obstruction from a blood vessel are described. The devices are deployed in a collapsed condition and are then expanded within the body. The devices are then manipulated to engage and remove the obstruction.
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Citations
23 Claims
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1. A method of removing an obstruction from a blood vessel, comprising the steps of:
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providing an obstruction removing element having an expandable portion which is movable from a collapsed position to an expanded position, the obstruction removing element also having a proximal portion and means for stopping distal advancement of the proximal portion of the element to prevent expansion of the obstruction engaging element beyond the expanded position, the preventing means being coupled to the proximal portion of the element;
advancing the obstruction removing element into the obstruction with the obstruction removing element in the collapsed position;
permitting the obstruction removing element to move toward the expanded shape after the advancing step; and
moving the obstruction removing element proximally to engage the obstruction, the preventing means preventing distal displacement of the proximal portion of the element relative to the insertion element when the obstruction removing element is moved proximally. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A device for removing an obstruction from a blood vessel, comprising:
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an insertion element;
an expandable element coupled to the insertion element, the expandable element having a proximal portion slidably coupled to the insertion element and a distal portion coupled to a distal portion of the insertion element;
a filament having a proximal portion coupled to the insertion element and a distal portion coupled to the expandable element, wherein the filament limits distal movement of the proximal portion relative to the insertion element. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23-65. -65. (canceled)
Specification