公开(公告)号：US11696843B2

公开(公告)日：2023-07-11

申请号：US17021907

申请日：2020-09-15

Applicant: MicroVention, Inc.

Inventor： Ponaka Pung ,  Helen Nguyen ,  Tai D. Tieu

IPC: A61F2/88 ,  A61F2/90 ,  A61F2/954 ,  A61F2/82 ,  A61F2/86 ,  A61F2/852

CPC classification number: A61F2/885 ,  A61F2/90 ,  A61F2/82 ,  A61F2/852 ,  A61F2/86 ,  A61F2/88 ,  A61F2/954 ,  A61F2002/823 ,  A61F2250/006 ,  A61F2250/0023 ,  A61F2250/0036

Abstract: A stent with varying porosity is described. The stent can be comprised of multiple stents attached together. A braided stent may have selected regions of increased thickness. The stent may be comprised of wires that are welded together at their ends in order to minimize vessel trauma. The stent may comprise a helically wound radiopaque wire wound through the stent.

公开(公告)号：US11000394B2

公开(公告)日：2021-05-11

申请号：US16244910

申请日：2019-01-10

Applicant: MicroVention, Inc.

Inventor： Ponaka Pung ,  Tai D. Tieu ,  Ross Soltanian ,  Helen Nguyen ,  Oanh Nguyen ,  Britney Ngo

IPC: A61F2/966 ,  A61F2/82 ,  A61F2/88

Abstract: Implant engagement mechanisms are disclosed for maintaining engagement with a stent until it has been fully deployed and expanded from a catheter or sheath. The apparatus, method and system involving these engagement mechanisms allow a physician to withdraw or retract a sheath prior to full deployment, thereby allowing for redeployment of the stent at a more desirable position.

公开(公告)号：US10806610B2

公开(公告)日：2020-10-20

申请号：US16025942

申请日：2018-07-02

Applicant: MicroVention, Inc.

Inventor： Ponaka Pung ,  Helen Nguyen ,  Tai D. Tieu

IPC: A61F2/88 ,  A61F2/90 ,  A61F2/954 ,  A61F2/82 ,  A61F2/86 ,  A61F2/852

Abstract: A stent with varying porosity is described. The stent can be comprised of multiple stents attached together. A braided stent may have selected regions of increased thickness. The stent may be comprised of wires that are welded together at their ends in order to minimize vessel trauma. The stent may comprise a helically wound radiopaque wire wound through the stent.

公开(公告)号：US20200315828A1

公开(公告)日：2020-10-08

申请号：US16910400

申请日：2020-06-24

Applicant: MicroVention, Inc.

Inventor： Ponaka Pung ,  Helen Nguyen

IPC: A61F2/966 ,  A61F2/01 ,  A61F2/90

Abstract: Disclosed is a method, apparatus, and kit for assisting the expansion of a self-expanding stent, especially within highly curved or tortuous blood vessels. An elongated pusher having an expandable distal mesh portion can be positioned within a self-expanding stent, expanding during delivery to provide extra expansion force to the stent to ensure the stent properly expands.

公开(公告)号：US12076260B2

公开(公告)日：2024-09-03

申请号：US16910400

申请日：2020-06-24

Applicant: MicroVention, Inc.

Inventor： Ponaka Pung ,  Helen Nguyen

IPC: A61F2/966 ,  A61F2/01 ,  A61F2/90 ,  A61F2/82 ,  A61F2/88

CPC classification number: A61F2/966 ,  A61F2/013 ,  A61F2/90 ,  A61F2002/016 ,  A61F2002/018 ,  A61F2002/828 ,  A61F2/88 ,  A61F2230/0013 ,  A61F2250/0015 ,  A61F2250/0023 ,  A61F2250/0098

Abstract: Disclosed is a method, apparatus, and kit for assisting the expansion of a self-expanding stent, especially within highly curved or tortuous blood vessels. An elongated pusher having an expandable distal mesh portion can be positioned within a self-expanding stent, expanding during delivery to provide extra expansion force to the stent to ensure the stent properly expands.

公开(公告)号：US11931277B2

公开(公告)日：2024-03-19

申请号：US17221641

申请日：2021-04-02

Applicant: MicroVention, Inc.

Inventor： Ponaka Pung ,  Tai D. Tieu ,  Ross Soltanian ,  Helen Nguyen ,  Oanh Nguyen ,  Britney Ngo

IPC: A61F2/82 ,  A61F2/88 ,  A61F2/966

CPC classification number: A61F2/966 ,  A61F2/82 ,  A61F2/88 ,  A61F2002/9665 ,  A61F2230/0069 ,  A61F2250/0098

Abstract: Implant engagement mechanisms are disclosed for maintaining engagement with a stent until it has been fully deployed and expanded from a catheter or sheath. The apparatus, method and system involving these engagement mechanisms allow a physician to withdraw or retract a sheath prior to full deployment, thereby allowing for redeployment of the stent at a more desirable position.

公开(公告)号：US11857196B2

公开(公告)日：2024-01-02

申请号：US17177020

申请日：2021-02-16

Applicant: MicroVention, Inc.

Inventor： Tai D. Tieu ,  Hideo Morita ,  Helen Nguyen

IPC: A61B17/12 ,  A61F2/95 ,  A61B90/00 ,  A61F2/01

CPC classification number: A61B17/12113 ,  A61B17/12022 ,  A61B17/12154 ,  A61B90/39 ,  A61F2/01 ,  A61F2/95 ,  A61B2017/12068 ,  A61F2/011 ,  A61F2002/9505 ,  A61F2002/9511 ,  A61F2250/0071

Abstract: A system and method of delivering and detaching an implant within a body of a patient is described. A tether connects an implant with a delivery device. The delivery device includes a heater coil through which the tether passes. The inner diameter of the heater coil is about the same size or slightly larger than the outer diameter of the tether, allowing the tether to more efficiently break the tether during delivery.

公开(公告)号：US10722392B2

公开(公告)日：2020-07-28

申请号：US15725142

申请日：2017-10-04

Applicant: MicroVention, Inc.

Inventor： Ponaka Pung ,  Helen Nguyen

IPC: A61F2/966 ,  A61F2/01 ,  A61F2/90 ,  A61F2/88 ,  A61F2/82

Abstract: Disclosed is a method, apparatus, and kit for assisting the expansion of a self-expanding stent, especially within highly curved or tortuous blood vessels. An elongated pusher having an expandable distal mesh portion can be positioned within a self-expanding stent, expanding during delivery to provide extra expansion force to the stent to ensure the stent properly expands.

公开(公告)号：US10182931B2

公开(公告)日：2019-01-22

申请号：US15269782

申请日：2016-09-19

Applicant: MicroVention, Inc.

Inventor： Ponaka Pung ,  Tai D. Tieu ,  Ross Soltanian ,  Helen Nguyen ,  Oanh Nguyen ,  Britney Ngo

IPC: A61F2/966 ,  A61F2/82 ,  A61F2/88

Abstract: Implant engagement mechanisms are disclosed for maintaining engagement with a stent until it has been fully deployed and expanded from a catheter or sheath. The apparatus, method and system involving these engagement mechanisms allow a physician to withdraw or retract a sheath prior to full deployment, thereby allowing for redeployment of the stent at a more desirable position.

公开(公告)号：US20240108352A1

公开(公告)日：2024-04-04

申请号：US18539170

申请日：2023-12-13

Applicant: MicroVention, Inc.

Inventor： Tai D. Tieu ,  Hideo Morita ,  Helen Nguyen

IPC: A61B17/12 ,  A61B90/00 ,  A61F2/01 ,  A61F2/95

CPC classification number: A61B17/12113 ,  A61B17/12022 ,  A61B17/12154 ,  A61B90/39 ,  A61F2/01 ,  A61F2/95 ,  A61B2017/12068 ,  A61F2/011 ,  A61F2002/9505 ,  A61F2002/9511 ,  A61F2250/0071

Abstract: An implant delivery system may have a pusher. The pusher may have an elongated shape. A distal end of the pusher may be configured to connect to an implant. The implant delivery system may have a tether connected to the pusher and to the implant. The implant delivery system may have a heating element mounted over the tether biased to contract a first surface of the heating element towards a second surface of the pusher. The implant delivery system may have an expander disposed between the first surface of the heating element and the second surface of the pusher. The expander may be configured to melt, allowing the first surface to contact the second surface, upon activation of the heating element.