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    Robotic catheter system with dynamic response
    4.
    发明申请
    Robotic catheter system with dynamic response 有权

    公开(公告)号：US20140194898A1

    公开(公告)日：2014-07-10

    申请号：US14151266

    申请日：2014-01-09

    Applicant: St. Jude Medical, Atrial Fibrillation Division, Inc.

    Inventor： Mark B. Kirschenman ,  John A. Hauck ,  Andrew P. Skypeck

    IPC: A61B19/00 ,  A61M25/00

    CPC classification number: A61B34/35 ,  A61B34/30 ,  A61B34/71 ,  A61B90/10 ,  A61B2034/301 ,  A61B2090/064 ,  A61M25/0067

    Abstract: An apparatus for maintaining a robotic catheter system in a responsive state includes a catheter, a plurality of linear translatable control elements, and a controller. In an embodiment, the catheter includes a proximal portion, a distal portion, and at least two steering wires. The steering wires may be configured at one end to control the movement of at least a portion of the distal portion of the catheter and at the other end for connection to a control member. In an embodiment, each control element may be configured to engage or interface with a respective control member, and the controller may be configured to measure a force exerted on at least one control member by a respective control element and further configured to linearly translate the control element to substantially maintain a force within a predetermined range.

    MULTI-ELECTRODE IMPEDANCE SENSING
    5.
    发明申请
    MULTI-ELECTRODE IMPEDANCE SENSING 有权

    公开(公告)号：US20240407691A1

    公开(公告)日：2024-12-12

    申请号：US18754429

    申请日：2024-06-26

    Applicant: St. Jude Medical, Atrial Fibrillation Division, Inc.

    Inventor： John A. Hauck

    IPC: A61B5/24 ,  A61B5/00 ,  A61B5/0538 ,  A61B5/06 ,  A61B18/00 ,  A61B18/14 ,  A61B90/00

    Abstract: A system and method for assessing contact between a medical device and tissue may comprise an electronic control unit (ECU) configured to be coupled to a medical device, the medical device comprising a first electrode and a second electrode. The ECU may be further configured to select the first electrode as an electrical source and the second electrode as an electrical sink, to cause an electrical signal to be driven between the source and sink, to detect respective electric potentials on the first electrode and the second electrode while the electrical signal is driven, and to determine an impedance respective of one of the first electrode and the second electrode according to both of the respective electric potentials.

    Navigational reference dislodgement detection method and system
    7.
    发明授权
    Navigational reference dislodgement detection method and system 有权

    公开(公告)号：US10687725B2

    公开(公告)日：2020-06-23

    申请号：US14946864

    申请日：2015-11-20

    Applicant: St. Jude Medical, Atrial Fibrillation Division, Inc.

    Inventor： John A. Hauck

    IPC: A61B5/00 ,  A61B5/042 ,  A61B34/20 ,  A61B5/06

    Abstract: A method of tracking a position of a catheter within a patient includes securing a navigational reference at a reference location within the patient, defining the reference location as the origin of a coordinate system, determining a location of an electrode moving within the patient relative to that coordinate system, monitoring for a dislodgement of the navigational reference from the initial reference location, for example by measuring the navigational reference relative to a far field reference outside the patient's body, and generating a signal indicating that the navigational reference has dislodged from the reference location. Upon dislodgement, a user may be provided with guidance to help reposition and secure the navigational reference to the initial reference location, or the navigational reference may be automatically repositioned and secured to the initial reference location. Alternatively, a reference adjustment may be calculated to compensate for the changed reference point/origin.

    Dynamic adaptive respiration compensation with automatic gain control
    8.
    发明授权
    Dynamic adaptive respiration compensation with automatic gain control 有权

    公开(公告)号：US10561371B2

    公开(公告)日：2020-02-18

    申请号：US14800910

    申请日：2015-07-16

    Applicant: St. Jude Medical, Atrial Fibrillation Division, Inc.

    Inventor： Lev A. Koyrakh ,  Eric J. Voth ,  John A. Hauck ,  Jeffrey A. Schweitzer

    IPC: A61B5/00 ,  A61B5/06 ,  A61B5/053

    Abstract: A system for determining a location of an electrode of a medical device (e.g., a catheter) in a body of a patient includes a localization block for producing an uncompensated electrode location, a motion compensation block for producing a compensation signal (i.e., for respiration, cardiac, etc.), and a mechanism for subtracting the compensation signal from the uncompensated electrode location. The result is a corrected electrode location substantially free of respiration and cardiac artifacts. The motion compensation block includes a dynamic adaptation feature which accounts for changes in a patient's respiration patterns as well as intentional movements of the medical device to different locations within the patient's body. The system further includes an automatic compensation gain control which suppresses compensation when certain conditions, such as noise or sudden patch impedance changes, are detected.

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