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    METHOD AND APPARATUS TO CALIBRATE ULTRASOUND TRANSDUCERS
    2.
    发明申请
    METHOD AND APPARATUS TO CALIBRATE ULTRASOUND TRANSDUCERS 审中-公开

    公开(公告)号：WO2020112775A1

    公开(公告)日：2020-06-04

    申请号：PCT/US2019/063256

    申请日：2019-11-26

    Applicant: BUTTERFLY NETWORK, INC.

    Inventor： SATIR, Sarp ,  ZAHORIAN, Jaime, Scott

    IPC: A61B8/00

    Abstract: The disclosed embodiments relate to a capacitive micromachined transducers for ultrasound imaging having pressure calibrator to compensate for ultrasound image distortions caused by environmental pressure changes. In one embodiment, the disclosure relates to a method to calibrate a first ultrasound transducer of an array of ultrasound transducers for ambient pressure variation. The method includes the steps of detecting a real-time ambient pressure value; determining a pressure difference value between the detected ambient pressure value and a predetermined pressure value; and calibrating the first ultrasound transducers to compensate for the determined pressure difference.

    ULTRASOUND FINGERPRINT DETECTION AND RELATED APPARATUS AND METHODS
    3.
    发明申请
    ULTRASOUND FINGERPRINT DETECTION AND RELATED APPARATUS AND METHODS 审中-公开

    公开(公告)号：WO2020118135A1

    公开(公告)日：2020-06-11

    申请号：PCT/US2019/064839

    申请日：2019-12-06

    Applicant: BUTTERFLY NETWORK, INC.

    Inventor： LIU, Jianwei ,  FIFE, Keith, G. ,  SATIR, Sarp

    IPC: G06K9/00 ,  A61B5/117

    Abstract: Aspects of the technology described herein relate to sensing a fingerprint of a subject via an ultrasound fingerprint sensor. Certain aspects relate to transmitting and receiving ultrasound data at multiple different frequencies to provide sensing data from different depths within the skin of the subject. Since different ultrasound frequencies are expected to penetrate a subject's skin to different degrees, sensing a finger at multiple ultrasound frequencies may provide information on different physical aspects of the finger. For instance, sound ultrasound frequencies may sense a surface of the skin, whereas other ultrasound frequencies may penetrate through one or more of the epidermal, dermal or subcutaneous layers. The ultrasound fingerprint apparatus may have utility in various applications, including but not limited to mobile electronic devices, such as mobile phones or tablet computers, a laptop computer or biometric access equipment.

    ULTRASOUND DEVICES
    4.
    发明申请
    ULTRASOUND DEVICES 审中-公开

    公开(公告)号：WO2019213449A3

    公开(公告)日：2019-11-07

    申请号：PCT/US2019/030482

    申请日：2019-05-02

    Applicant: BUTTERFLY NETWORK, INC.

    Inventor： FIFE, Keith, G. ,  LIU, Jianwei ,  LUTSKY, Joseph ,  SATIR, Sarp ,  YANG, Jungwook

    IPC: B08B1/02 ,  B81B3/00 ,  A61B8/00 ,  H01L21/768

    Abstract: An ultrasound device is described. The ultrasound device may include a cavity, a membrane, and a sensing electrode. When an electrical signal is applied to the sensing electrode and a static bias is applied to the membrane, the membrane vibrates within the cavity and produces ultrasonic signals. The cavity, the membrane, and the sensing electrode may be considered a capacitive micromachined ultrasonic transducer (CMUT). The sensing electrode may be shaped as a ring, whereby the central portion of the sensing electrode is removed. Removal of the central portion of the sensing electrode may reduce the parasitic capacitance without substantially affecting the production of ultrasonic signals by the CMUT. This, in turn, can result in an increase in the signal-to-noise ratio (SNR) of the ultrasonic signals. The ultrasound device may further include a bond pad configured for wire bonding, and a trench electrically isolating the bond pad from the membrane.

    ULTRASOUND DEVICES
    6.
    发明申请
    ULTRASOUND DEVICES 审中-公开

    公开(公告)号：WO2019213449A2

    公开(公告)日：2019-11-07

    申请号：PCT/US2019/030482

    申请日：2019-05-02

    Applicant: BUTTERFLY NETWORK, INC.

    Inventor： FIFE, Keith, G. ,  LIU, Jianwei ,  LUTSKY, Joseph ,  SATIR, Sarp ,  YANG, Jungwook

    IPC: A61B8/00

    Abstract: An ultrasound device is described. The ultrasound device may include a cavity, a membrane, and a sensing electrode. When an electrical signal is applied to the sensing electrode and a static bias is applied to the membrane, the membrane vibrates within the cavity and produces ultrasonic signals. The cavity, the membrane, and the sensing electrode may be considered a capacitive micromachined ultrasonic transducer (CMUT). The sensing electrode may be shaped as a ring, whereby the central portion of the sensing electrode is removed. Removal of the central portion of the sensing electrode may reduce the parasitic capacitance without substantially affecting the production of ultrasonic signals by the CMUT. This, in turn, can result in an increase in the signal-to-noise ratio (SNR) of the ultrasonic signals. The ultrasound device may further include a bond pad configured for wire bonding, and a trench electrically isolating the bond pad from the membrane.

    ELASTICITY IMAGING IN HIGH INTENSITY FOCUSED ULTRASOUND
    7.
    发明申请
    ELASTICITY IMAGING IN HIGH INTENSITY FOCUSED ULTRASOUND 审中-公开

    公开(公告)号：WO2019006243A1

    公开(公告)日：2019-01-03

    申请号：PCT/US2018/040192

    申请日：2018-06-29

    Applicant: BUTTERFLY NETWORK, INC.

    Inventor： WEST, Lawrence, C. ,  CHEN, Kailiang ,  RALSTON, Tyler, S. ,  SATIR, Sarp ,  ZAHORIAN, Jaime, Scott

    IPC: A61B5/00 ,  A61B8/00 ,  A61B8/08 ,  A61B17/00 ,  A61B18/00

    Abstract: Ultrasound devices configured to perform high-intensity focused ultrasound (HIFU) are described. An ultrasound device may include HIFU units configured to emit high acoustic intensities and elasticity detectors configured to determine characteristics of the target area of a human body based on the elasticity of the target area. The elasticity detectors may determine, e.g., whether the target area is healthy, and if not, the type cell in need of treatment (e.g., the type of cancer cell present in the target area). In one example, the elasticity detectors may be configured to determine the stiffness of the target area, which may provide an indication as to the type of cell present in the area, by estimating the velocity of a shear wave propagating away from the target area. The shear wave may arise in response to the application of an ultrasound wave to the target area.

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