Piezoelectric transducer
    41.
    发明授权
    Piezoelectric transducer 失效
    压电式换能器

    公开(公告)号:US06720709B2

    公开(公告)日:2004-04-13

    申请号:US10235968

    申请日:2002-09-06

    IPC分类号: H01L4108

    摘要: A miniature piezoelectric transducer element is provided, comprising: (a) a cell element having a cavity; (b) a flexible piezoelectric layer attached to the cell member, the piezoelectric layer having an external surface and an internal surface, the piezoelectric layer featuring such dimensions so as to enable fluctuations thereof at its resonance frequency upon impinging of an external acoustic wave; and (c) a first electrode attached to the external surface and a second electrode attached to the internal surface of the piezoelectric layer. At least one of the electrodes may be specifically shaped so as to provide a maximal electrical output, wherein the electrical output may be current, voltage or power. A preferred shape of the electrodes includes two cores interconnected by a connecting member. The transducer element may function as a transmitter. When used as a transmitter, the electrodes are electrically connected to an electrical circuit including a switching element for modulating the reflected acoustic wave by controllably changing the mechanical impedance of the piezoelectric layer according to the frequency of an electrical message signal arriving from an electronic member, such as a sensor. Third and fourth electrodes may be attached to the piezoelectric layer and the electrical circuit, such that the switching element alternately connects the electrodes in parallel and anti-parallel electrical connections so as to controllably change the mechanical impedance of the piezoelectric layer.

    摘要翻译: 提供了一种微型压电换能器元件,包括:(a)具有空腔的电池元件; (b)安装在电池部件上的柔性压电体层,该压电体层具有外表面和内表面,该压电体层具有这样的尺寸,使其能够在外界声波入射时以其谐振频率发生波动; 和(c)附着到外表面的第一电极和附着在压电层的内表面上的第二电极。 电极中的至少一个可以被特别地成形为提供最大的电输出,其中电输出可​​以是电流,电压或功率。 电极的优选形状包括通过连接构件互连的两个芯。 换能器元件可以用作发射器。 当用作发射器时,电极电连接到包括用于通过可控地改变压电层的机械阻抗的调制反射声波的开关元件的电路,该电压根据从电子部件到达的电信号信号的频率, 例如传感器。 第三和第四电极可以附接到压电层和电路,使得开关元件以平行和反平行的电连接交替地连接电极,以便可控地改变压电层的机械阻抗。

    Ultrasonic transducer for bi-directional wireless communication
    42.
    发明授权
    Ultrasonic transducer for bi-directional wireless communication 有权
    用于双向无线通信的超声波换能器

    公开(公告)号:US08626295B2

    公开(公告)日:2014-01-07

    申请号:US13038754

    申请日:2011-03-02

    IPC分类号: A61N1/08

    摘要: A piezoelectric element within an external ultrasonic transducer assembly can be used for wireless communication of data between an implantable device and the external ultrasonic transducer assembly such as using ultrasonic energy coupled to a flexible portion of a housing of the transducer assembly. The flexible portion can be configured to contact skin of a body containing the implantable device. The transducer assembly can be configured to respectively transmit or receive ultrasonic energy using at least partially overlapping respective ranges of resonant frequencies.

    摘要翻译: 外部超声波换能器组件内的压电元件可用于可植入装置与外部超声换能器组件之间的数据的无线通信,例如使用耦合到换能器组件的壳体的柔性部分的超声波能量。 柔性部分可以构造成接触包含可植入装置的身体的皮肤。 换能器组件可以被配置为使用至少部分重叠的各个谐振频率范围分别发送或接收超声波能量。

    Biased acoustic switch for implantable medical device
    43.
    发明授权
    Biased acoustic switch for implantable medical device 有权
    用于可植入医疗器械的偏置声学开关

    公开(公告)号:US08340776B2

    公开(公告)日:2012-12-25

    申请号:US12054864

    申请日:2008-03-25

    IPC分类号: A61N1/00 A61B5/02

    CPC分类号: A61N1/3787 A61N1/37217

    摘要: Devices, systems, and methods for selectively activating medical devices are disclosed. A medical device in accordance with an illustrative embodiment includes an energy storage device, an acoustic transducer configured to convert an acoustic signal into an electrical signal, a signal detector configured to generate a trigger signal when the electrical signal exceeds a specific threshold established by a biasing element, a control circuit, and an activation/deactivation switch configured to switch the medical device between an inactive state and an active state in response to the trigger signal.

    摘要翻译: 公开了用于选择性地激活医疗装置的装置,系统和方法。 根据说明性实施例的医疗装置包括能量存储装置,被配置为将声信号转换为电信号的声换能器;信号检测器,被配置为当电信号超过由偏置确定的特定阈值时产生触发信号 元件,控制电路和激活/去激活开关,其被配置为响应于触发信号在无效状态和活动状态之间切换医疗设备。

    ULTRASONIC TRANSDUCER FOR BI-DIRECTIONAL WIRELESS COMMUNICATION
    44.
    发明申请
    ULTRASONIC TRANSDUCER FOR BI-DIRECTIONAL WIRELESS COMMUNICATION 有权
    用于双向无线通信的超声波传感器

    公开(公告)号:US20110218594A1

    公开(公告)日:2011-09-08

    申请号:US13038754

    申请日:2011-03-02

    IPC分类号: A61N1/08 G10K9/122

    摘要: A piezoelectric element within an external ultrasonic transducer assembly can be used for wireless communication of data between an implantable device and the external ultrasonic transducer assembly such as using ultrasonic energy coupled to a flexible portion of a housing of the transducer assembly. The flexible portion can be configured to contact skin of a body containing the implantable device. The transducer assembly can be configured to respectively transmit or receive ultrasonic energy using at least partially overlapping respective ranges of resonant frequencies.

    摘要翻译: 外部超声波换能器组件内的压电元件可用于可植入装置与外部超声换能器组件之间的数据的无线通信,例如使用耦合到换能器组件的壳体的柔性部分的超声波能量。 柔性部分可以构造成接触包含可植入装置的身体的皮肤。 换能器组件可以被配置为使用至少部分重叠的各个谐振频率范围分别发送或接收超声波能量。

    Implantable medical device with integrated acoustic transducer
    46.
    发明授权
    Implantable medical device with integrated acoustic transducer 有权
    具有集成声换能器的可植入医疗器械

    公开(公告)号:US07522962B1

    公开(公告)日:2009-04-21

    申请号:US11293414

    申请日:2005-12-02

    IPC分类号: A61N1/00

    摘要: An implantable medical device comprises a hermetically sealed housing having at least one hermetic electrical feed through and an acoustic lead having a proximal end connected to the electrical feed through. One or more acoustic transducers are carried in a distal portion of the acoustic lead and configured for converting energy between electrical energy and acoustic energy, wherein electronics for driving the one or more transducers are carried in the housing.

    摘要翻译: 植入式医疗装置包括具有至少一个密封电子馈送通道的气密密封的壳体,以及具有连接到电气供给通路的近端的声学引线。 一个或多个声换能器被携带在声引线的远端部分中,并被配置用于在电能和声能之间转换能量,其中用于驱动一个或多个换能器的电子元件被承载在壳体中。