Off-axis visualization systems
    3.
    发明授权

    公开(公告)号:US11559188B2

    公开(公告)日:2023-01-24

    申请号:US16902915

    申请日:2020-06-16

    摘要: A system for visualizing a tissue region of interest comprises a deployment catheter defining a lumen and a hood coupled to and extending distally from the deployment catheter. The hood has a low-profile configuration within a delivery sheath and a deployed configuration when extended distally of the delivery sheath. The hood in the deployed configuration defines an open area in fluid communication with the lumen. A distal portion of the deployment catheter extends into the open area. An imaging element is coupled to an imager support member. When in the deployed configuration, the imaging element is configured to extend distally of the distal portion while the imager support member extends within the deployment catheter. The imaging element comprises a tapered surface and the deployment catheter comprises a complementary tapered surface. Retraction of the imaging element causes the imaging element to shift radially outward from a longitudinal axis.

    CATHETER CONTROL SYSTEMS
    5.
    发明申请

    公开(公告)号:US20220280022A1

    公开(公告)日:2022-09-08

    申请号:US17738947

    申请日:2022-05-06

    IPC分类号: A61B1/005 A61M25/01 A61M25/00

    摘要: A medical manipulation assembly includes a catheter and distal and proximal steering mechanisms. The catheter includes distal and proximal steerable portions with working channels configured to receive an instrument. The distal steering mechanism is operable to bend the distal steerable portion in a first plane relative to the proximal steerable portion in response to movement of a first portion of the distal steering mechanism about a first axis of rotation and to bend the distal steerable portion in a second plane relative to the proximal steerable portion in response to movement of a second portion of the distal steering mechanism about a second axis of rotation. The proximal steering mechanism is operable to bend the proximal steerable portion by rotational movement of the proximal steering mechanism. Distal pullwires extend between the distal steerable portion and steering mechanism and proximal pullwires extend between the proximal steerable portion and steering mechanism.

    Stent delivery under direct visualization

    公开(公告)号:US11241325B2

    公开(公告)日:2022-02-08

    申请号:US16359447

    申请日:2019-03-20

    摘要: A tissue manipulation system comprises a reconfigurable hood structure. The hood structure is asymmetric and has a low profile delivery configuration and an expanded deployed configuration which defines an open area bounded at least in part by the hood structure and by an interface surface extending across the hood structure distal end and configured to engage against a tissue region. The open area is in fluid communication with an environment external to the hood structure. The system also includes a catheter in communication with the open area such that introduction of a fluid through the catheter purges the open area of bodily fluid. The interface surface is slanted relative to the catheter longitudinal axis when the hood structure is fully expanded in the expanded deployed configuration. The system also includes an imaging element positioned on the hood structure such that the open area is visualized through the fluid.

    Systems and methods for unobstructed visualization and ablation

    公开(公告)号:US10441136B2

    公开(公告)日:2019-10-15

    申请号:US15044667

    申请日:2016-02-16

    摘要: A method of treatment comprises intravascularly securing an anchor extending from an anchor member at least partially within a vessel lumen such that blood flows unobstructed through or past the anchor. While the anchor is secured, a distance of the anchor member, between the anchor and a barrier or membrane projecting distally from a deployment catheter, is adjusted such that an open area defined by the barrier or membrane is placed against or adjacent to a portion of a patient tissue. Adjusting the distance of the anchor member comprises moving the deployment catheter distally with respect to the anchor member. The method also comprises displacing blood with a transparent fluid from the open area, and while the anchor is secured, articulating the barrier or membrane circumferentially around the anchor. The method also includes treating the tissue while visualizing through the transparent fluid.