公开(公告)号：US12226102B2

公开(公告)日：2025-02-18

申请号：US18144435

申请日：2023-05-08

Applicant: MICROVENTION, INC.

Inventor： Todd Hewitt ,  Brian E. Merritt ,  William R. Patterson ,  James M. Thompson ,  Claudio Plaza ,  Hung P. Tran

IPC: A61B17/12 ,  A61B17/00 ,  A61B90/00 ,  A61M25/00

Abstract: Devices for treating a cerebral aneurysm may include proximal and distal self-expanding resilient permeable shells each including a plurality of elongate resilient filaments having a braided structure. The distal permeable shell may include a first plurality of filaments gathered at least at the proximal end thereof. The proximal permeable shell may include a second plurality of filaments are gathered at least at the proximal end thereof. The expanded state of the distal permeable shell may have a convex shape at the distal end of the distal permeable shell and the expanded state of the proximal permeable shell may have a generally convex shape at the proximal end of the proximal permeable shell. The expanded states of the distal and proximal permeable shells may also define a toroidal cavity through which an elongate support member extends.

公开(公告)号：US20230363763A1

公开(公告)日：2023-11-16

申请号：US18221559

申请日：2023-07-13

Applicant: MICROVENTION, INC.

Inventor： John Vu ,  Nathan Luu ,  Todd Hewitt ,  Hung P. Tran

IPC: A61B17/12 ,  A61B90/00

CPC classification number: A61B17/12172 ,  A61B17/12113 ,  A61B2017/1205 ,  A61B2090/3966

Abstract: Devices and methods for treatment of a patient's vasculature are described. Embodiments may include a first permeable shell and a second permeable shell, where the second permeable shell sits within an interior cavity of the first permeable shell. The first and second permeable shells may each be made from a plurality of elongate filaments that are woven together to form a mesh. The mesh of the first permeable shell may have a larger mesh density and be softer than the mesh of the second permeable shell.

公开(公告)号：US20230285028A1

公开(公告)日：2023-09-14

申请号：US18197814

申请日：2023-05-16

Applicant: MICROVENTION, INC.

Inventor： Claudio Plaza ,  James M. Thompson ,  Hung P. Tran

IPC: A61B17/12 ,  A61F2/90

CPC classification number: A61B17/12118 ,  A61B17/12109 ,  A61B17/12172 ,  A61F2/90 ,  A61F2002/823

Abstract: Systems for completely or partially excluding an aneurysm from circulation of blood are described. In one embodiment, the system includes a microcatheter, a fully or partially self-expandable stent, and a delivery device configured to be deliverable together with the stent through a lumen of the microcatheter. The delivery device includes an elongate support member coupled to a self-expandable portion, which includes a tubular mesh structure having a compressed state and an expanded state. A distal portion of the self-expandable portion extends proximally from a distal end of the self-expandable portion and has a length having an expanded outer diameter that is equal to or greater than the self-expanded inner diameter of the stent. In some embodiments, the proximal end of the self-expandable portion is substantially non-expanded where it is coupled to the elongate support member.

公开(公告)号：US20240117538A1

公开(公告)日：2024-04-11

申请号：US18390594

申请日：2023-12-20

Applicant: MICROVENTION, INC.

Inventor： James M. Thompson ,  Brian J. Cox ,  Robert Rosenbluth ,  Philippe Marchand ,  John Nolting ,  Darrin J. Kent ,  Tan Q. Dinh ,  Hung P. Tran ,  James A. Milburn

IPC: D04C3/42 ,  D04C1/12 ,  D04C3/40 ,  D04C3/48

CPC classification number: D04C3/42 ,  D04C1/12 ,  D04C3/40 ,  D04C3/48

Abstract: Methods of braiding using a braiding mechanism are described. The braiding mechanism includes a disc defining a plane and a circumferential edge, a mandrel extending from a center of the disc that is adapted to hold a plurality of filaments extending radially from the mandrel toward the circumferential edge of the disc, a plurality of catch mechanisms positioned circumferentially around the edge of the disc, a plurality of actuators adapted to move the plurality of catch mechanisms in a substantially radial direction relative to the circumferential edge of the disc, and a plurality of filaments extending radially from the mandrel towards circumferential edge of the disc. A middle portion of each filament of the plurality of filaments contacts an end of the mandrel.

公开(公告)号：US20230270441A1

公开(公告)日：2023-08-31

申请号：US18144435

申请日：2023-05-08

Applicant: MICROVENTION, INC.

Inventor： Todd Hewitt ,  Brian E. Merritt ,  William R. Patterson ,  James M. Thompson ,  Claudio Plaza ,  Hung P. Tran

IPC: A61B17/12

CPC classification number: A61B17/12113 ,  A61B17/12172 ,  A61B17/12177 ,  A61B17/12031 ,  A61B17/1214 ,  A61B17/12145 ,  A61B17/1215 ,  A61F2310/00149 ,  A61B2017/00526

Abstract: Methods and devices for treating a cerebral aneurysm are described. The device may include proximal and distal self-expanding resilient permeable shells each including a plurality of elongate resilient filaments having a braided structure. The distal permeable shell may include a first plurality of filaments gathered at least at the proximal end thereof. The proximal permeable shell may include a second plurality of filaments are gathered at least at the proximal end thereof. The expanded state of the distal permeable shell may have a convex shape at the distal end of the distal permeable shell and the expanded state of the proximal permeable shell may have a generally convex shape at the proximal end of the proximal permeable shell. The expanded states of the distal and proximal permeable shells may also define a toroidal cavity through which an elongate support member extends.

公开(公告)号：US11885053B2

公开(公告)日：2024-01-30

申请号：US17830959

申请日：2022-06-02

Applicant: MICROVENTION, INC.

Inventor： James M. Thompson ,  Brian J. Cox ,  Robert Rosenbluth ,  Philippe Marchand ,  John Nolting ,  Darrin J. Kent ,  Tan Q. Dinh ,  Hung P. Tran ,  James A. Milburn

IPC: D04C3/42 ,  D04C3/40 ,  D04C1/12 ,  D04C3/48

CPC classification number: D04C3/42 ,  D04C1/12 ,  D04C3/40 ,  D04C3/48

Abstract: Methods of braiding using a braiding mechanism are described. The braiding mechanism includes a disc defining a plane and a circumferential edge, a mandrel extending from a center of the disc that is adapted to hold a plurality of filaments extending radially from the mandrel toward the circumferential edge of the disc, a plurality of catch mechanisms positioned circumferentially around the edge of the disc, a plurality of actuators adapted to move the plurality of catch mechanisms in a substantially radial direction relative to the circumferential edge of the disc, and a plurality of filaments extending radially from the mandrel towards circumferential edge of the disc. A middle portion of each filament of the plurality of filaments contacts an end of the mandrel.

公开(公告)号：US11690629B2

公开(公告)日：2023-07-04

申请号：US17176744

申请日：2021-02-16

Applicant: MICROVENTION, INC.

Inventor： Claudio Plaza ,  James M. Thompson ,  Hung P. Tran

IPC: A61B17/12 ,  A61F2/966 ,  A61F2/90 ,  A61F2/82 ,  A61B17/00

CPC classification number: A61B17/12118 ,  A61B17/12109 ,  A61B17/12172 ,  A61F2/90 ,  A61B2017/00836 ,  A61B2017/1205 ,  A61F2002/823 ,  A61F2210/0009 ,  A61F2310/00029

Abstract: Systems for treating an aneurysm in a cerebral vessel and methods of use are described. In one embodiment, the system includes an elongate tubular member having a lumen, an expandable stent, and a delivery device. The expandable stent has a constrained state that is configured for delivery through the lumen of the elongate tubular member, and an expanded state configured for placement within the cerebral vessel adjacent the aneurysm. The delivery device includes an elongate member and a self-expandable portion. The proximal end of the self-expandable portion is coupled to the elongate member at or near the distal end of the elongate member. The self-expandable portion of the delivery device includes a tubular mesh structure having a constrained state and an expanded state. The stent is engaged (e.g., mechanical, frictional, or intermeshing) with the self-expandable portion of the delivery device.

公开(公告)号：US20240398416A1

公开(公告)日：2024-12-05

申请号：US18804297

申请日：2024-08-14

Applicant: MICROVENTION, INC.

Inventor： Todd Hewitt ,  Brian Merritt ,  William R. Patterson ,  James M. Thompson ,  Claudio Plaza ,  Hung P. Tran ,  Richard L. Quick

IPC: A61B17/12 ,  A61B17/00 ,  A61B90/00

Abstract: Devices and methods for treatment of a patient's vasculature are described. The device includes a self-expanding permeable implant having a radially constrained state and an expanded state with a shortened configuration, a plurality of elongate filaments which are woven together in a tubular braid, and a fixation element. The fixation element may be a hook, barb, protrusion, bioadhesive, or pore. The implant includes at least some nitinol filaments and at least some composite filaments. Methods of treating a cerebral aneurysm are also described. The methods include advancing a permeable implant to the aneurysm, deploying the implant, and delivering embolic material into the cerebral aneurysm adjacent a portion of the permeable implant that spans the neck.

公开(公告)号：US20240366227A1

公开(公告)日：2024-11-07

申请号：US18648963

申请日：2024-04-29

Applicant: MICROVENTION, INC.

Inventor： Hung P. Tran ,  Todd Hewitt ,  Parker Milhous ,  Karishma Desai

IPC: A61B17/12 ,  A61B17/00

Abstract: Devices and methods for treatment of a patient's vasculature are described. Embodiments may include a permeable implant made from a plurality of elongate filaments that are woven together. The implant may have a first unrestrained preset configuration comprising a dome portion and a brim portion, having a distal end with an outer surface having a convex shape. The implant may have a second deployed configuration that is an inversion of the first unrestrained configuration. The second deployed configuration has an open distal end and has an inner surface having a concave shape.

公开(公告)号：US12096940B2

公开(公告)日：2024-09-24

申请号：US17176634

申请日：2021-02-16

Applicant: MICROVENTION, INC.

Inventor： Todd Hewitt ,  Brian Merritt ,  William R. Patterson ,  James M. Thompson ,  Claudio Plaza ,  Hung P. Tran ,  Richard L. Quick

IPC: A61B17/12 ,  A61B17/00 ,  A61B90/00

CPC classification number: A61B17/12113 ,  A61B17/12013 ,  A61B17/12031 ,  A61B17/12118 ,  A61B17/12145 ,  A61B17/12172 ,  A61B17/12177 ,  A61B17/12186 ,  A61B2017/00292 ,  A61B2017/00526 ,  A61B2017/00539 ,  A61B2017/00778 ,  A61B2017/00862 ,  A61B2017/00867 ,  A61B2017/1205 ,  A61B2017/12068 ,  A61B2017/1209 ,  A61B2017/12095 ,  A61B2090/3966

Abstract: Devices and methods for treatment of a patient's vasculature are described. The device includes a self-expanding resilient permeable shell having a radially constrained state and an expanded state with a globular, axially shortened configuration. The permeable shell may be a single layer of braided elongate filaments having first and second ends that are secured at the proximal end of the permeable shell. The devices may also include permeable shells made of woven braided mesh having a variable mesh density, i.e., the average size of pores in one region are a different than the average size of pores in another region. Methods of using the device to treat a cerebral aneurysm are also described. Methods of forming a tubular braid are also described. Methods of forming a tubular braid with variable braid densities are described. Methods of forming a tubular braid using a castellated mandrel are also described.