# US 11,026,708 B2 · Intravascular thromboembolectomy device and method using the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,026,708 B2 - Document ID: US11026708B2 - Status: Granted - Kind: B2 - Application number: 13/543,657 - Filed: 2012-07-06 - Published: 2013-01-31 - Granted: 2021-06-08 - Earliest claimed: 2011-07-26 - Assignees: ThrombX Medical, Inc. - Applicants: Michael P. Marks; Like Que - Inventors: Michael P. Marks; Like Que - Web page: https://patentgrep.com/patent/US11026708B2 ## CPC - A61B 17/221: Gripping devices in the form of loops or baskets {for gripping calculi or similar types of obstructions (surgical snare instruments A61B17/32056)} - A61B 17/22032: {having inflatable gripping elements (balloon catheters A61M25/10)} - A61F 2/013: {Distal protection devices, i.e. devices placed distally in combination with another endovascular procedure, e.g. angioplasty or stenting} - A61B 2017/00778: {Operations on blood vessels (A61B2017/22097, A61B2017/320741 take precedence)} - A61B 2017/22038: {with a guide wire} - A61B 2017/22051: {with an inflatable part, e.g. balloon, for positioning, blocking, or immobilisation (A61B2017/22048, A61B2017/3486 take precedence)} - A61B 2017/2215: {having an open distal end} - A61F 2002/016: {made from wire-like elements} - A61F 2230/0076: ellipsoidal or ovoid - A61F 2230/008: paraboloidal - A61F 2230/0093: Umbrella-shaped, e.g. mushroom-shaped - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) ## Abstract A device and a method for increasing or restoring a flow in a body lumen are provided. The device and the method may treat conditions related to a stroke, such as an ischemic stroke, by removing an occlusion from a blood vessel and/or reopen a blood vessel. The device may comprise a tubing compartment, a central wire, and an engaging compartment. The engaging compartment may comprise a distal engaging element and a proximal engaging element. A clot or occlusion present in the body lumen such as an artery may be engaged in and/or between the distal and proximal engaging elements. Further, the positions of one or both of the engaging elements and the distance therebetween can be adjusted to ensure the engagement of the clot or occlusion. ## Claims ### Claim 1 A device for use in a blood vessel to remove an occlusion present in the blood vessel, the device comprising: a proximal end; a distal end; a handle at the proximal end of the device; a tubing compartment, which comprises a pusher tubing and a connecting tubing fixedly connected to each other; a central wire comprising a proximal end and a distal end thereof; and an engaging compartment at or near the distal end of the device, wherein the engaging compartment comprises: a proximal engaging element comprising a plurality of wires or struts, said proximal engaging element being open at a distal end of the proximal engaging element, wherein the proximal engaging element comprises a concave bend causing the distal end of the proximal engaging element to bend towards a central axis of the proximal engaging element such that the distal end points towards the central axis and the distal end is closer to the central axis than a part of the proximal engaging element proximal to the distal end; and a distal engaging element comprising a plurality of wires or struts forming a web or mesh, said distal engaging element being self-expandable, said distal engaging element being closed at a proximal end of the distal engaging element; wherein the proximal end of the distal engaging element fits inside the distal end of the proximal engaging element with room for a portion of the occlusion to fit therein, such that said portion of the occlusion can be captured between the proximal end of the distal engaging element and the distal end of the proximal engaging element when the distance between the distal engaging element and the proximal engaging element is shortened, wherein the proximal end of the distal engaging element is fixed at the distal end of the central wire, said central wire extending from the proximal end of the distal engaging element to the handle at the proximal end of the device, whereby the location of the distal engaging element in the blood vessel or its position with respect to the proximal engaging element is controlled by movement of the central wire and configured to be locked at the proximal end of the device once the occlusion is engaged; and wherein the distal engaging element is configured to hold the occlusion in all of the following ways: (a) engaging the occlusion with a lateral side of the distal engaging element, (b) frictionally engaging the occlusion between the lateral side of the distal engaging element and the wall of the blood vessel, and (c) grabbing the occlusion between the proximal structure and the distal structure, while the device moves the occlusion within the blood vessel. ### Claim 2 (depends on 1) The device according to claim 1, wherein the proximal engaging element is an expandable element comprising a plurality of wires or struts and can expand into a funnel or cone shaped structure. ### Claim 3 (depends on 1) The device according to claim 1, wherein the proximal engaging element is associated with the central wire and moves along the central wire. ### Claim 4 (depends on 1) The device according to claim 1, wherein the proximal engaging element is fixed with the tubing compartment extending to a proximal end of the device, thereby a location of the proximal engaging element in the body lumen is controlled by movement of the tubing compartment. ### Claim 5 (depends on 1) The device according to claim 1, wherein the central wire comprises a wire, a cable, or a braid. ### Claim 6 (depends on 1) The device according to claim 1, wherein said distal end of the proximal engaging element is rounded or smoothed. ### Claim 7 (depends on 1) The device of claim 1, further comprising a microcatheter for delivery of the device.