Intravascular treatment of vascular occlusion and associated devices, systems, and methods
First Claim
1. A thrombus extraction device for removal of a vascular thrombus from a blood vessel of a patient, the thrombus extraction device comprising:
- a catheter having a proximal end and a distal end, an outer shaft defining a first lumen, an intermediate shaft defining a second lumen, and an inner shaft, wherein the intermediate shaft is coaxial the first lumen and the inner shaft is coaxial the second lumen;
a proximal self-expanding coring element formed of a unitary fenestrated structure having a proximal end and a distal end and configured to core and separate a portion of the vascular thrombus from the blood vessel, wherein the proximal end of the fenestrated structure is coupled to the distal end of the intermediate shaft; and
a distal expandable cylindrical portion formed of a braided filament mesh structure having a proximal end and a distal end and configured to capture the vascular thrombus portion, wherein the proximal end of the mesh structure is attached to the distal end of the fenestrated structure, and wherein the distal end of the mesh structure is coupled to the distal end of the inner shaft, wherein full expansion of the mesh structure and fenestrated structure varies based on a position of the intermediate shaft relative the inner shaft of the catheter.
2 Assignments
0 Petitions
Accused Products
Abstract
Systems and methods for removal of thrombus from a blood vessel in a body of a patient are disclosed herein. The method can include: providing a thrombus extraction device including a proximal self-expanding member formed of a unitary fenestrated structure, a distal substantially cylindrical portion formed of a net-like filament mesh structure, and an inner shaft member connected to a distal end of the net-like filament mesh structure; advancing a catheter constraining the thrombus extraction device through a vascular thrombus, deploying the thrombus extraction; retracting the thrombus extraction device to separate a portion of the thrombus from the vessel wall and to capture the portion of the thrombus within the net-like filament mesh structure; and withdrawing the thrombus extraction device from the body to remove thrombus from the patient.
397 Citations
20 Claims
-
1. A thrombus extraction device for removal of a vascular thrombus from a blood vessel of a patient, the thrombus extraction device comprising:
-
a catheter having a proximal end and a distal end, an outer shaft defining a first lumen, an intermediate shaft defining a second lumen, and an inner shaft, wherein the intermediate shaft is coaxial the first lumen and the inner shaft is coaxial the second lumen; a proximal self-expanding coring element formed of a unitary fenestrated structure having a proximal end and a distal end and configured to core and separate a portion of the vascular thrombus from the blood vessel, wherein the proximal end of the fenestrated structure is coupled to the distal end of the intermediate shaft; and a distal expandable cylindrical portion formed of a braided filament mesh structure having a proximal end and a distal end and configured to capture the vascular thrombus portion, wherein the proximal end of the mesh structure is attached to the distal end of the fenestrated structure, and wherein the distal end of the mesh structure is coupled to the distal end of the inner shaft, wherein full expansion of the mesh structure and fenestrated structure varies based on a position of the intermediate shaft relative the inner shaft of the catheter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A thrombus extraction device for removal of a vascular thrombus from a blood vessel of a patient, the thrombus extraction device comprising:
-
a catheter having a proximal end and a distal end, an outer shaft defining a first lumen, an intermediate shaft defining a second lumen, and an inner shaft, wherein the intermediate shaft is coaxial the first lumen and the inner shaft is coaxial the second lumen; a locking mechanism configured to secure a relative position of the outer shaft with respect to the intermediate shaft; a proximal self-expanding coring element formed of a unitary fenestrated structure having a proximal end and a distal end and configured to core and separate a portion of the vascular thrombus from the blood vessel, wherein the proximal end of the fenestrated structure is coupled to the distal end of the intermediate shaft; and a distal expandable cylindrical portion formed of a braided filament mesh structure having a proximal end and a distal end and configured to capture the vascular thrombus portion, wherein the proximal end of the mesh structure is attached to the distal end of the fenestrated structure, and wherein the distal end of the mesh structure is coupled to the distal end of the inner shaft, wherein full expansion of the mesh structure and fenestrated structure varies based on a position of the intermediate shaft relative the inner shaft of the catheter.
-
-
20. A thrombus extraction device for removal of a vascular thrombus from a blood vessel of a patient, the thrombus extraction device comprising:
-
a catheter having a proximal end and a distal end, an outer shaft defining a first lumen, an intermediate shaft defining a second lumen, and an inner shaft, wherein the intermediate shaft is coaxial the first lumen and the inner shaft is coaxial the second lumen; a handle comprising a plunger configured to control a relative position of the inner shaft with respect to the intermediate shaft and to selectively secure the relative position of the inner shaft with respect to the intermediate shaft; a proximal self-expanding coring element formed of a unitary fenestrated structure having a proximal end and a distal end and configured to core and separate a portion of the vascular thrombus from the blood vessel, wherein the proximal end of the fenestrated structure is coupled to the distal end of the intermediate shaft; and a distal expandable cylindrical portion formed of a braided filament mesh structure having a proximal end and a distal end and configured to capture the vascular thrombus portion, wherein the proximal end of the mesh structure is attached to the distal end of the fenestrated structure, and wherein the distal end of the mesh structure is coupled to the distal end of the inner shaft, wherein full expansion of the mesh structure and fenestrated structure varies based on a position of the intermediate shaft relative the inner shaft of the catheter.
-
Specification