Systems, methods and devices for removing obstructions from a blood vessel
2 Assignments
0 Petitions
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.
-
Citations
36 Claims
-
1-22. -22. (canceled)
-
23. A method of removing an obstruction from a blood vessel, comprising the steps of:
-
providing an obstruction removing element which is movable from a collapsed position to an expanded position, the obstruction removing element forming a helical coil when in the expanded position, the obstruction removing element also having means for preventing distal advancement of a proximal portion of the coil to prevent expansion of the coil beyond the expanded position, the preventing means being coupled to the proximal portion of the helical coil;
positioning the obstruction removing element in a catheter with the obstruction removing element in the collapsed position;
advancing the catheter through an obstruction;
positioning the obstruction engaging element outside the catheter after the advancing step so that the obstruction removing element moves toward the expanded position; and
moving the obstruction engaging element proximally to engage the obstruction, the preventing means preventing distal displacement of the proximal portion of the helical coil beyond the expanded position. - View Dependent Claims (24, 25, 26, 27, 28)
-
-
29. A method of removing an obstruction from a blood vessel, comprising the steps of:
-
providing an obstruction removing element which is movable from a collapsed position to an expanded position, the obstruction removing element having a wire which has a distal end coupled to an insertion element, the wire also having a proximal end which is slidable on the insertion element;
positioning the obstruction removing element in a catheter with the obstruction removing element in the collapsed position;
advancing the catheter through the obstruction;
moving the obstruction engaging element out of the catheter after the advancing step so that the obstruction removing element moves toward the expanded position; and
engaging the obstruction by moving the obstruction engaging element after the advancing step. - View Dependent Claims (30, 31)
-
-
32. An obstruction removing device, comprising:
an obstruction removing element which is movable from a collapsed position to an expanded position, the obstruction removing element having a wire which has a distal end coupled to an insertion element, the wire also having a proximal end which is slidable on the insertion element. - View Dependent Claims (33, 34)
-
35. A method of removing an obstruction from a blood vessel, comprising the steps of:
-
providing an obstruction removing element which is movable from a collapsed position to an expanded position;
positioning the obstruction removing element in a catheter with the obstruction removing element in the collapsed position;
advancing the catheter through the obstruction;
moving a distal end of the obstruction engaging element out of the catheter after the advancing step so that the obstruction removing element expands distal to the obstruction, wherein at least part of the obstruction engaging element proximal to the distal end expands within the obstruction; and
removing the obstruction by moving the obstruction engaging element after the advancing step.
-
-
36-65. -65. (canceled)
Specification