Coolable ultrasound probe and ultrasound system

    公开(公告)号:US11497469B2

    公开(公告)日:2022-11-15

    申请号:US16306877

    申请日:2017-06-05

    Abstract: An ultrasound probe including a probe body having a mounting area and a flexible lip around said mounting area for sealing a space between the mounting area and a subject contacted by the ultrasound probe; and a number of ultrasound transducer elements mounted in the mounting area. The probe body further includes an inlet to said space and an outlet from said space for facilitating a fluid flow through said space when sealed. Also included are an ultrasound system including such an ultrasound probe and a method of subjecting a subject to ultrasound waves generated with such an ultrasound probe.

    Actuator device based on an electroactive polymer

    公开(公告)号:US11139426B2

    公开(公告)日:2021-10-05

    申请号:US15774337

    申请日:2016-12-09

    Abstract: An active matrix array of electroactive polymer actuators is provided, each electroactive polymer actuator having a switching arrangement. The switching arrangement comprises a first circuit (90) connected to a first terminal of the electroactive polymer actuator, for selectively driving the first terminal of the electroactive polymer actuator to ground or connecting it to an open circuit. A second circuit (92) is connected to a second terminal of the electroactive polymer actuator, for selectively driving the second terminal of the electroactive polymer actuator to ground or connecting it to an open circuit. Furthermore, a pull-up component (50) is permanently connected between a drive voltage and the first terminal of the electroactive polymer generator. By controlling both terminals of the electroactive polymer actuator, it is possible to reduce static power consumption, at least when no voltage is to be stored across the electroactive polymer actuator.

    ACTUATOR DEVICE USING CURRENT-ADDRESSED ELECTROACTIVE POLYMER

    公开(公告)号:US20210050505A1

    公开(公告)日:2021-02-18

    申请号:US16968617

    申请日:2019-01-29

    Abstract: The device as defined by the claims comprises electroactive polymer actuators (30) each of which is addressed by two addressing lines for selecting the electroactive polymer actuator and a current direction drive mode. A first circuit (42) is for driving a controllable current through the electroactive actuator in a first direction and a second circuit (44) is for driving a controllable current through the electroactive actuator in a second direction, opposite to the first direction. This device enables an actuator to be driven with current in two opposite directions so that the actuator may be driven bidirectionally between actuation states.

    Actuator device based on an electroactive polymer

    公开(公告)号:US11139425B2

    公开(公告)日:2021-10-05

    申请号:US15774022

    申请日:2016-12-13

    Abstract: An active matrix array of electroactive polymer actuators (36) is provided, each electroactive polymer actuator (36) having a switching arrangement (34). The switching arrangement comprises an input which is connected to a respective data line (30) and an output which is connected to a first terminal of the associated electroactive polymer actuator (36), wherein a second terminal of each electroactive polymer actuator is connected to a control line (110). A driver provides drive signals which comprise at least first and second drive levels for application to the data lines and third and fourth drive levels for application to the control line. Use is made of of common electrode driving (i.e. the control line driving) to enable low transistor control voltages to be used to switch larger voltages across the electroactive polymer actuators.

    Actuator device based on an electroactive polymer

    公开(公告)号:US10711769B2

    公开(公告)日:2020-07-14

    申请号:US16336580

    申请日:2017-09-22

    Abstract: An actuator device comprises an active matrix array of rows and columns of electroactive polymer actuators, each electroactive polymer actuator having a switching circuit. The switching circuit has a drive transistor and a capacitor arrangement. The capacitor arrangement is charged to a voltage derived from a drive voltage for the electroactive polymer actuator combined with a voltage derived from the drive transistor threshold voltage. During this programming of the capacitor arrangement, the EAP actuator is isolated from any current flowing. The switching circuit enables compensation for age-related changes in the threshold voltage. Thus, a low performance (i.e. with poor threshold voltage stability) transistor may be used, with measurement of the threshold voltage of the current-providing TFT once per frame time (or once per multiple frame times) to compensate for the aging effect.

    DEVICE FOR DELIVERY OF A TOOTH WHITENING AGENT
    10.
    发明申请
    DEVICE FOR DELIVERY OF A TOOTH WHITENING AGENT 有权
    用于输送牙齿白剂的装置

    公开(公告)号:US20150017601A1

    公开(公告)日:2015-01-15

    申请号:US14359922

    申请日:2012-12-20

    CPC classification number: A61C17/0202 A61C3/025 A61C19/063 A61C19/066

    Abstract: A delivery device (12, 140) includes a source (16) of pressurized fluid and a nozzle (24) which defines an outlet (22). A fluid pathway (20) fluidly connects the source of pressurized fluid with the nozzle outlet (22) for delivery of a spray of fluid from the nozzle outlet. A delivery mechanism (14) releases a dose (48) of particles (28) into the fluid pathway from an associated cart-ridge (32), such that the dose of the particles is carried by the pressurized fluid through the nozzle outlet in the spray. The particles include a dental care agent.

    Abstract translation: 输送装置(12,140)包括加压流体源(16)和限定出口(22)的喷嘴(24)。 流体路径(20)将加压流体源与喷嘴出口(22)流体连接,用于从喷嘴出口输送流体喷雾。 输送机构(14)从相关联的推车脊(32)将颗粒(28)的剂量(48)释放到流体路径中,使得颗粒的剂量由加压流体通过喷嘴出口承载在 喷雾。 颗粒包括牙科护理剂。

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