Blood flow restorative and embolus removal methods
First Claim
1. A method for restoring blood flow in an occluded cerebral blood vessel of a patient during acute ischemic stroke, comprising:
- accessing an cerebral blood vessel having an occluded zone with a catheter system, the catheter system comprising a microcatheter and an embolus removal device;
wherein the embolus removal device comprises a self-expandable member configured to be delivered through the microcatheter in a compressed configuration and deployed to an expanded configuration upon retraction of the microcatheter,wherein the self-expandable member comprises a generally cylindrical body having a cell structure configured to facilitate embolus attachment to the self-expandable member;
locating the occluded zone within the artery caused by an embolus;
advancing the catheter system to the location of the occluded zone;
deploying the self-expandable member to the expanded configuration at the location of the occluded zone by retracting the microcatheter such that the self-expandable member engages and captures the embolus upon deployment of the self-expandable member,wherein the embolus is at least partially engaged and captured on an external surface of the self-expandable member; and
removing the embolus by withdrawing the embolus removal device.
4 Assignments
0 Petitions
Accused Products
Abstract
Methods for restoring blood flow in occluded blood vessels are disclosed. The methods can include accessing an artery with a catheter system and locating an occluded zone within the artery caused by an embolus. The catheter system can include a microcatheter and a blood flow restoration device or an embolus removal device having a self-expandable member configured to be delivered through the microcatheter in a compressed configuration and to be deployed to an expanded configuration upon retraction of the microcatheter. The methods can include deploying the self-expandable member at the location of the occluded zone such that the self-expandable member engages and captures the embolus upon deployment of the self-expandable member and removing the embolus by withdrawing the blood flow restoration device or the embolus removal device.
-
Citations
12 Claims
-
1. A method for restoring blood flow in an occluded cerebral blood vessel of a patient during acute ischemic stroke, comprising:
-
accessing an cerebral blood vessel having an occluded zone with a catheter system, the catheter system comprising a microcatheter and an embolus removal device; wherein the embolus removal device comprises a self-expandable member configured to be delivered through the microcatheter in a compressed configuration and deployed to an expanded configuration upon retraction of the microcatheter, wherein the self-expandable member comprises a generally cylindrical body having a cell structure configured to facilitate embolus attachment to the self-expandable member; locating the occluded zone within the artery caused by an embolus; advancing the catheter system to the location of the occluded zone; deploying the self-expandable member to the expanded configuration at the location of the occluded zone by retracting the microcatheter such that the self-expandable member engages and captures the embolus upon deployment of the self-expandable member, wherein the embolus is at least partially engaged and captured on an external surface of the self-expandable member; and removing the embolus by withdrawing the embolus removal device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method for restoring blood flow in an occluded cerebral blood vessel of a patient, comprising:
-
accessing a cerebral artery having an occluded zone with a catheter system, the catheter system comprising a microcatheter and a blood flow restoration device, wherein the blood flow restoration device comprises a distal self-expandable capture device and a proximal delivery member, wherein the distal self-expandable capture device is eccentrically coupled to the proximal delivery member by a plurality of tether lines, wherein the distal self-expandable capture device is configured to be delivered through the microcatheter in a compressed configuration and deployed to an expanded configuration upon retraction of the microcatheter; locating the occluded zone within the artery caused by an occlusive object; advancing the catheter system to the location of the occluded zone; deploying the distal self-expandable capture device to the expanded configuration at the location of the occluded zone by retracting the microcatheter such that the capture device engages and captures the occlusive object upon deployment of the capture device, wherein the occlusive object is at least partially engaged and captured on an external surface of the capture device; and removing the occlusive object by withdrawing the blood flow restoration device. - View Dependent Claims (11, 12)
-
Specification