Devices and methods for removing obstructions from a patient and methods for making obstruction removing devices
First Claim
Patent Images
1. A method of forming an obstruction retrieving element, comprising the steps of:
- providing a first mandrel and a second mandrel, at least one of the first and second mandrels being movable relative to the other mandrel so that the first and second mandrels are movable relative to one another between a first position and a second position, the first and second mandrels moving toward one another when moved from the first position to the second position;
wrapping an elongate element around the first mandrel with the first and second mandrels in the first position;
moving the at least one of the first and second mandrels to the second position after wrapping the elongate element around the first mandrel;
wrapping the elongate element around the second mandrel after the moving step.
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Abstract
The present invention provides an obstruction removing device and a method for making the obstruction removing device. The method includes two mandrels with an elongate element being wound around the first mandrel and then wrapped around the second mandrel. The mandrels are movable relative to one another so that the second mandrel may be moved closer to the first mandrel after winding the element around the first mandrel and before winding the element around the second mandrel.
138 Citations
36 Claims
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1. A method of forming an obstruction retrieving element, comprising the steps of:
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providing a first mandrel and a second mandrel, at least one of the first and second mandrels being movable relative to the other mandrel so that the first and second mandrels are movable relative to one another between a first position and a second position, the first and second mandrels moving toward one another when moved from the first position to the second position;
wrapping an elongate element around the first mandrel with the first and second mandrels in the first position;
moving the at least one of the first and second mandrels to the second position after wrapping the elongate element around the first mandrel;
wrapping the elongate element around the second mandrel after the moving step. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for removing an obstruction from a cerebral vessel, comprising the steps of:
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providing an obstruction removing device having an elongate element, the elongate element being movable from a collapsed position to an expanded position and being naturally biased toward the expanded position, the elongate element having a proximal section, a distal section and an intermediate section, the intermediate section being positioned between the distal and proximal sections, at least one of the proximal and distal sections forming at least two loops having a longitudinal axis, the intermediate section having a first crossing portion which intersects the longitudinal axis and a second crossing portion which also intersects the longitudinal axis;
introducing the obstruction removing device into a patient with the elongate element being in the collapsed position;
expanding the elongate element after the introducing step;
engaging an obstruction with the elongate element; and
removing the obstruction with the elongate element. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. An obstruction retrieving element for removing obstructions from a vascular location, comprising:
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a proximal section;
a distal section, at least one of the proximal and distal sections forming at least two loops having a longitudinal axis, and an intermediate section positioned between and coupled to the distal and proximal sections, the intermediate section having a first crossing portion which intersects the longitudinal axis and a second crossing portion which also intersects the longitudinal axis. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification