Expandable Assembly Catheter
    12.
    发明申请

    公开(公告)号:US20210187241A1

    公开(公告)日:2021-06-24

    申请号:US16723971

    申请日:2019-12-20

    IPC分类号: A61M25/00 A61M25/01

    摘要: One embodiment includes a catheter apparatus, including an elongated deflectable element including a distal end, a coupler connected to the distal end, a pusher including a distal portion, and configured to be advanced and retracted through the deflectable element, a nose connector connected to the distal portion, and including a distal receptacle having an inner surface and a distal facing opening, and an expandable assembly including flexible polymer circuit strips, each strip including electrodes disposed thereon, the strips being disposed circumferentially around the distal portion of the pusher, with first ends of the strips being connected to the coupler and second ends of the strips including respective hinges entering the distal facing opening and connected to the inner surface of the distal receptacle, the strips being configured to bow radially outward when the pusher is retracted expanding the expandable assembly from a collapsed form to an expanded form.

    Heat Transfer Through an Ablation Electrode

    公开(公告)号:US20210153930A1

    公开(公告)日:2021-05-27

    申请号:US16696713

    申请日:2019-11-26

    IPC分类号: A61B18/14

    摘要: An apparatus includes a flexible electrically-insulating substrate including an inner surface and an outer surface. The substrate is shaped to define multiple channels passing between the inner surface and the outer surface, at least some of the channels being concave channels. The apparatus further includes an outer layer of an electrically-conducting metal covering at least part of the outer surface, an inner layer of the electrically-conducting metal covering at least part of the inner surface, and respective columns of the electrically-conducting metal that fill the channels such as to connect the outer layer to the inner layer.

    Intra-Balloon Deflection Mechanism for Enhanced Balloon Maneuverability

    公开(公告)号:US20200054859A1

    公开(公告)日:2020-02-20

    申请号:US16103793

    申请日:2018-08-14

    IPC分类号: A61M25/01 A61B18/14 A61M25/09

    摘要: A medical instrument includes an expandable balloon, an intra-balloon deflection assembly, and one or more puller wires. The expandable balloon is coupled to a distal end of a shaft for insertion into a body of a patient. The intra-balloon deflection assembly is also coupled to the distal end of the shaft, and includes a distal section of the shaft which extends partially through the expandable balloon and includes (i) an elastic element coupled to a proximal side of the expandable balloon and configured to be bent relative to a longitudinal axis of the shaft, and (ii) a rigid element coupled to a distal side of the expandable balloon. The one or more puller wires are coupled to the rigid element and are configured to bend the elastic element, thereby deflecting the expandable balloon.

    Spectral sensing of ablation
    18.
    发明授权

    公开(公告)号:US10314650B2

    公开(公告)日:2019-06-11

    申请号:US14585135

    申请日:2014-12-29

    摘要: A method for tissue assessment includes ablating tissue at a site within a body of a living subject using an invasive probe applied to the site. At a first stage in ablation of the tissue, first measurements are made of scattered light intensities from the site at a plurality of different wavelengths. At a second stage in the ablation of the tissue, subsequent to the first stage, second measurements are made of the scattered light intensities from the site at the plurality of different wavelengths. Progress of the ablation is assessed by computing different, respective measures of change in the scattered light intensities at the different wavelengths occurring between the first and second measurements, and comparing the respective measures.

    DETERMINING BALLOON CATHETER CONTACT WITH ANATOMY USING ULTRASOUND

    公开(公告)号:US20190117315A1

    公开(公告)日:2019-04-25

    申请号:US15792404

    申请日:2017-10-24

    摘要: A medical system includes a shaft, an inflatable balloon, a radial array of ultrasound transducers and a processor. The shaft is configured for insertion into a body of a patient. The inflatable balloon is coupled to a distal end of the shaft and configured to perform a treatment to surrounding anatomy. The ultrasound transducers are distributed circumferentially around the distal end of the shaft inside the balloon, and configured to transmit ultrasound waves at respective radial directions and receive respective ultrasound reflections. The processor is configured to estimate and output to a user, based on the ultrasound reflections received from the ultrasound transducers, an extent of mechanical contact between the balloon and the surrounding anatomy.