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    MAPPING LOCAL ACTIVATION TIMES FOR SINUS AND NON-SINUS CARDIAC CYCLES
    2.
    发明申请
    MAPPING LOCAL ACTIVATION TIMES FOR SINUS AND NON-SINUS CARDIAC CYCLES 有权

    公开(公告)号：US20210161426A1

    公开(公告)日：2021-06-03

    申请号：US16699068

    申请日：2019-11-28

    Applicant: BIOSENSE WEBSTER (ISRAEL) LTD.

    Inventor： Morris Ziv-Ari ,  Yoav Benaroya ,  Dan Sztejnberg ,  Itai Doron ,  Ido Ilan

    IPC: A61B5/06 ,  A61B5/042 ,  A61B5/044 ,  A61B5/0468

    Abstract: A method, including receiving sets of signals during multiple cardiac cycles, each set indicating, for a probe inserted into a cardiac chamber, a 3D location of a distal end of the probe, electrical potentials measured at the location, and respective times during a given cycle when the potentials were measured. The received measurements and the respective times are compared to a first template for a sinus rhythm cycle and a second template for a non-sinus rhythm cycle so as to identify a sequence of cycles including consecutive first, second, and third cycles wherein the first and second cycles match the first template and the third cycle matches the second template. A physical map is generated based on the locations. Based on the received locations and corresponding potentials, an electroanatomic map including the local activation times for the non-sinus rhythm cycle overlaid on the physical map is rendered to a display.

    Heartbeat detection method and heartbeat detection device
    5.
    发明授权
    Heartbeat detection method and heartbeat detection device 有权

    公开(公告)号：US10945623B2

    公开(公告)日：2021-03-16

    申请号：US16080645

    申请日：2017-02-13

    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    Inventor： Nobuaki Matsuura ,  Kei Kuwabara ,  Takayuki Ogasawara

    IPC: A61B5/04 ,  A61B5/024 ,  A61B5/0408 ,  A61B5/0456 ,  A61B5/0245 ,  A61B5/0452 ,  A61B5/0468 ,  A61B5/00

    Abstract: There is provided a heartbeat detection device. The heartbeat detection device includes a time difference value calculation unit (3) configured to calculate a time difference value of sampling data of an electrocardiographic waveform, FIFO buffers (4-1, 4-2) configured to receive the time difference value, a FIFO buffer (4-3) configured to receive an output from the FIFO buffer (4-2), a FIFO buffer (4-4) configured to receive an output from the FIFO buffer (4-3), a minimum value detection unit (5) configured to detect, for each sampling time, a minimum value M out of the time difference value stored in the FIFO buffer (4-2) and the time difference value stored in the FIFO buffer (4-4), and a heartbeat time determination unit (6) configured to set, when a difference value M−a between the minimum value M and an output value a of the FIFO buffer (4-1) is equal to or greater than a threshold, sampling time of the output value a as heartbeat time.

    METHOD AND SYSTEM TO DETECT R-WAVES IN CARDIAC ACTIVITY SIGNALS
    9.
    发明申请
    METHOD AND SYSTEM TO DETECT R-WAVES IN CARDIAC ACTIVITY SIGNALS 有权

    公开(公告)号：US20210015386A1

    公开(公告)日：2021-01-21

    申请号：US17060361

    申请日：2020-10-01

    Applicant: Pacesetter, Inc.

    Inventor： Gene A. Bornzin ,  Fady Dawoud ,  Jong Gill ,  Stuart Rosenberg ,  Fujian Qu ,  Neha Malhotra

    IPC: A61B5/04 ,  A61B5/0468 ,  A61B5/0432 ,  A61B5/042 ,  A61B5/0456 ,  A61B5/00

    Abstract: A computer implemented method and system for detecting arrhythmias in cardiac activity are provided. The method is under control of one or more processors configured with specific executable instructions. The method obtains far field cardiac activity (CA) signals and applies a direction related responsiveness (DRR) filter to the CA signals to produce DRR filtered signals. The method compares a current sample from the CA signals to a prior sample from the DRR filtered signals to identify a direction characteristic of the CA signals and defines the DRR filter based on a timing constant that is set based on the direction characteristic identified. The method analyzes the CA signals in connection with the DRR filtered signals to identify a peak characteristic of the CA signals and determines peak to peak intervals between successive peak characteristic. The method detects at least one of noise or an arrhythmia based on the peak to peak intervals and records results of the detecting.

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