公开(公告)号：US20240315712A1

公开(公告)日：2024-09-26

申请号：US18692118

申请日：2022-09-22

Applicant: MicroVention, Inc.

Inventor： Joseph Rye ,  Tao Lin ,  Xiang Simon Han ,  Sarri Alsunna ,  Hussain S. Rangwala ,  Hari Narayanan Raman

IPC: A61B17/22 ,  A61B17/00

CPC classification number: A61B17/22 ,  A61B2017/00292 ,  A61B2017/22079 ,  A61B2217/005

Abstract: Aspiration thrombectomy devices and methods wherein an aspiration cycle includes a positive displacement segment to facilitate clot removal, a pump cartridge to facilitate tube management and an aspiration device for providing a vacuum surge. Disclosed herein is an aspiration thrombectomy system which relies on air or inert gas, rather than liquid, to provide both static and dynamic suction level profiles for safely and efficiently retrieving and removing from the body a thrombus. In one example embodiment, two or more pressure sources may be configured to apply two or more suction levels to an aspiration catheter. Valves may connect conduits between the pressure sources and the aspiration catheter, with the valves being selectively opened or closed to control which pressure level is applied to the catheter.

公开(公告)号：US20240293127A1

公开(公告)日：2024-09-05

申请号：US18576356

申请日：2022-07-07

Applicant: MicroVention, Inc.

Inventor： Todd Hewitt ,  Karishma Desai ,  Parker Milhous ,  Tao Lin

IPC: A61B17/12

CPC classification number: A61B17/12154 ,  A61B17/12113

Abstract: An embolic coil having a stretch resistant member for resisting stretching or unwinding of the embolic coil. A tubular member may be attached to a proximal end of the embolic coil. A stretch resistant member may extend through the tubular member and the embolic coil to be attached at its distal end to the embolic coil. The stretch resistant member may include an enlargement to prevent the stretch resistant member from withdrawing into the tubular member. The stretch resistant member may comprise a one-piece design comprising a tether or a two-piece design comprising a tether in combination with another component such as a filament, a braid, or an eyelet. The stretch resistant member may be wavy to allow slack. The distal end of the stretch resistant member may be attached to the embolic coil by tying a knot, melting into a tip, or the use of adhesives, welding, or soldering.

公开(公告)号：US20220151806A1

公开(公告)日：2022-05-19

申请号：US17455648

申请日：2021-11-18

Applicant: MicroVention, Inc.

Inventor： Hussain Rangwala ,  Tao Lin

IPC: A61F2/848 ,  A61F2/89

Abstract: This specification is directed to stents that are configured to better deploy and remain implanted across a fusiform aneurysm. Specifically, these stents include one or more anchoring members that radially expand within a fusiform aneurysm. In some instances, the anchoring members radially expand to a diameter that is larger than that of regions of vessels adjacent to the fusiform aneurysm to help prevent stent migration. The anchoring members can be a bulbous layer, a plurality of loops, a plurality of arms, a plurality of longitudinal wires, or one or more hydrogel rings.