CLOT-ENGULFING MECHANICAL THROMBECTOMY APPARATUSES
4 Assignments
0 Petitions
Accused Products
Abstract
Mechanical thrombectomy systems including an elongate catheter configured as an elongate inversion support, a flexible tractor configured to roll and invert over the distal end of the elongate inversion support, and a clot engaging member on the distal end of an elongate manipulator are described herein. These systems may capture a clot using the clot engaging member and draw the clot and clot engaging member and roll the flexible tractor into the catheter to remove the clot and clot engaging member from a vessel.
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Citations
41 Claims
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1-15. -15. (canceled)
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16. A method of removing a clot from within a vessel using a mechanical thrombectomy apparatus, the method comprising:
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positioning a distal end of the mechanical thrombectomy apparatus adjacent to the clot within a vessel, wherein the mechanical thrombectomy apparatus includes a tractor region that extends along a distal region of a catheter and inverts over a distal end of the catheter so that a first end of the tractor extends proximally within the catheter; pulling the first end of the tractor proximally within the catheter to roll the tractor over the distal end of the catheter so that the tractor inverts over the distal end of the catheter and pull the clot into the catheter with the inverting tractor; withdrawing the catheter proximally away from the tractor and clot when the tractor jams on the distal end of the catheter; pulling the first end of the tractor proximally so that the tractor inverts over the clot within the vessel without rolling over the distal end opening of the catheter; and withdrawing the tractor and clot proximally from the vessel. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A method of removing a clot from within a vessel using a mechanical thrombectomy apparatus, the method comprising:
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positioning a distal end of the mechanical thrombectomy apparatus adjacent to the clot within a vessel, wherein the mechanical thrombectomy apparatus includes a tractor region that extends along a distal region of a catheter and inverts over a distal end of the catheter so that a first end of the tractor extends proximally within the catheter; disengaging a second end of the tractor from a tractor hold that secures the second end of the tractor to an outer surface of the catheter by pulling the tractor proximally with a force greater than a deployment force and expanding the tractor against the vessel wall; pulling the first end of the tractor proximally within the catheter to roll the tractor over the distal end of the catheter so that the tractor inverts over the distal end of the catheter and pull the clot into the catheter with the inverting tractor; withdrawing the catheter proximally away from the tractor and clot when the tractor jams on the distal end of the catheter; pulling the tractor and clot proximally so that the tractor inverts over the clot within the vessel without rolling over the distal end opening of the catheter; pulling proximally on the tractor to draw the tractor and clot into the catheter; and withdrawing the tractor and clot proximally from the vessel. - View Dependent Claims (27, 28, 29, 30, 31, 32)
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33. A method of removing a clot from within a vessel using a mechanical thrombectomy apparatus, the method comprising:
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engaging the clot with a clot engaging member on the distal end of an elongate manipulator; sliding the mechanical thrombectomy apparatus over the elongate manipulator to position the distal end of the mechanical thrombectomy apparatus adjacent to the clot, wherein the mechanical thrombectomy apparatus includes a tractor region that extends along a distal region of a catheter and inverts over a distal end of the catheter so that a first end of the tractor extends proximally within the catheter; pushing the catheter distally while holding the first end of the tractor within the catheter fixed relatively to the elongate manipulator so that the tractor rolls and inverts over the distal end of the catheter and pulls the clot and the clot engaging member into the catheter with the inverting tractor; and withdrawing the mechanical thrombectomy apparatus, clot and clot engaging member proximally from the vessel. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40)
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41. A method of removing a clot from within a vessel using a mechanical thrombectomy apparatus, the method comprising:
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engaging the clot with a clot engaging member on the distal end of an elongate manipulator; sliding the mechanical thrombectomy apparatus over the elongate manipulator to position the distal end of the mechanical thrombectomy apparatus adjacent to the clot, wherein the mechanical thrombectomy apparatus includes a tractor region that extends along a distal region of a catheter and inverts over a distal end of the catheter so that a first end of the tractor extends proximally within the catheter; pushing the catheter distally while pulling the first end of the tractor and the elongate manipulator proximally within the catheter to roll and invert the tractor over the distal end of the catheter and advancing the catheter distally, to pull the clot and the clot engaging member into the catheter with the inverting tractor; and withdrawing the mechanical thrombectomy apparatus, clot and clot engaging member proximally from the vessel.
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Specification