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    Ultrasound devices
    3.
    发明授权
    Ultrasound devices 有权

    公开(公告)号：US11986349B2

    公开(公告)日：2024-05-21

    申请号：US16401630

    申请日：2019-05-02

    Applicant: BFLY OPERATIONS, INC.

    Inventor： Keith G. Fife ,  Jianwei Liu ,  Joseph Lutsky ,  Sarp Satir ,  Jungwook Yang

    IPC: A61B8/00 ,  A61B8/06 ,  B06B1/00 ,  B06B1/02 ,  A61B8/08

    CPC classification number: A61B8/4483 ,  A61B8/06 ,  B06B1/00 ,  B06B1/0292 ,  A61B8/4444 ,  A61B8/483 ,  A61B8/5207 ,  B06B2201/76

    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.

    PRESSURE PORT FOR ULTRASONIC TRANSDUCER ON CMOS SENSOR
    4.
    发明申请
    PRESSURE PORT FOR ULTRASONIC TRANSDUCER ON CMOS SENSOR 有权

    公开(公告)号：US20250090138A1

    公开(公告)日：2025-03-20

    申请号：US18793062

    申请日：2024-08-02

    Applicant: BFLY Operations, Inc

    Inventor： Keith G. Fife ,  Jianwei Liu ,  Jungwook Yang ,  Joseph Lutsky

    IPC: A61B8/12 ,  B06B1/02 ,  B06B1/06 ,  G01N29/24 ,  H10N30/20

    Abstract: Micromachined ultrasonic transducers having pressure ports are described. The micromachined ultrasonic transducers may comprise flexible membranes configured to vibrate over a cavity. The cavity may be sealed, in some instances by the membrane itself. A pressure port may provide access to the cavity, and thus control of the cavity pressure. In some embodiments, an ultrasound device including an array of micromachined ultrasonic transducers is provided, with pressure ports for at least some of the ultrasonic transducers. The pressure ports may be used to control pressure across the array.

    Methods and apparatuses for turning on and off an ADC driver in an ultrasound device
    6.
    发明授权
    Methods and apparatuses for turning on and off an ADC driver in an ultrasound device 有权

    公开(公告)号：US11558062B2

    公开(公告)日：2023-01-17

    申请号：US16937553

    申请日：2020-07-23

    Applicant: BFLY Operations, Inc.

    Inventor： Sewook Hwang ,  Jungwook Yang ,  Kailiang Chen ,  Nevada J. Sanchez ,  Keith G. Fife

    IPC: H03M1/12 ,  A61B8/00 ,  G01S7/52 ,  A61B8/12 ,  H03M1/00

    Abstract: Aspects of the technology described herein relate to control circuitry configured to turn on and off the ADC driver. In some embodiments, the control circuitry is configured to turn on and off the ADC driver in synchronization with sampling activity of an ADC, in particular based on when an ADC is sampling. The control circuitry may be configured to turn on the ADC driver during the hold phase of the ADC a time period before the track phase and to turn off the ADC driver during the hold phase a time period after the track phase. In some embodiments, the control circuitry is configured to control a duty cycle of the ADC driver turning on and off. In some embodiments, the control circuitry is configured to control a ratio between an off current and an on current in the ADC driver.

    Methods and apparatuses for processing ultrasound signals
    7.
    发明授权
    Methods and apparatuses for processing ultrasound signals 有权

    公开(公告)号：US11536818B2

    公开(公告)日：2022-12-27

    申请号：US16910897

    申请日：2020-06-24

    Applicant: BFLY OPERATIONS, INC.

    Inventor： Jungwook Yang ,  Daniel Rea McMahill ,  Kailiang Chen ,  Nevada J. Sanchez

    IPC: H03M7/16 ,  G01S7/52 ,  A61B8/08 ,  A61B8/00

    Abstract: Aspects of the technology described herein related to an ultrasound processing unit (UPU) including gray-coding circuitry configured to convert standard binary-coded digital ultrasound signals to gray-coded digital ultrasound signals and gray-decoding circuitry coupled to the gray-coding circuitry and configured to convert the gray-coded digital ultrasound signals to standard binary-coded digital ultrasound signals. The UPU may include an analog portion, a digital portion, and a data bus configured to route the gray-coded digital ultrasound signals from the analog portion to the digital portion subsequent to converting the standard binary-coded digital ultrasound signals to the gray-coded digital ultrasound signals. The analog portion may include multiple analog front-ends (AFEs), the gray-coding circuitry, and an analog-to-digital converter. The digital portion may include the gray-decoding circuitry. A data bus from one AFE may pass over another AFE.

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