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23 条记录 (耗时 0.031 秒)

    High speed piezoelectric optical system with tunable focal length
    11.
    发明授权
    High speed piezoelectric optical system with tunable focal length 有权
    具有可调谐焦距的高速压电光学系统

    公开(公告)号：US07369723B1

    公开(公告)日：2008-05-06

    申请号：US10293823

    申请日：2002-11-12

    申请人： Mark J. Mescher

    发明人： Mark J. Mescher

    IPC分类号： G02B6/32

    CPC分类号： G02B3/14 ,  G02B26/0825 ,  G02B26/0875

    摘要： A varifocal optical system includes a substantially circular membrane deposited on a substrate, and a ring-shaped PZT thin film deposited on the outer portion of the circular membrane. The membrane may be a MEMS-micromachined membrane, made of thermal oxide, polysilicon, ZrO2 and SiO2. The membrane is initially in a buckled state, and may function as a mirror or a lens. Application of an electric voltage between an inner and outer electrode on the piezoelectric thin film induces a lateral strain on the PZT thin film, thereby altering the curvature of the membrane, and thus its focal length. Focal length tuning speeds as high as 1 MHz have been demonstrated. Tuning ranges of several hundred microns have been attained. The varifocal optical system can be used in many applications that require rapid focal length tuning, such as optical switching, scanning confocal microscopy, and vibration compensation in optical storage disks.

    摘要翻译： 变焦光学系统包括沉积在基底上的基本圆形的膜和沉积在圆形膜的外部上的环形PZT薄膜。 膜可以是由热氧化物，多晶硅，Z O 2 O 2和S O 2 O 2制成的MEMS微加工膜 。 膜最初处于弯曲状态，并且可以用作镜子或透镜。 在压电薄膜上的内部和外部电极之间的电压施加在PZT薄膜上引起横向应变，从而改变膜的曲率，从而改变其焦距。 焦距调谐速度高达1 MHz已被证明。 达到数百微米的调谐范围。 变焦光学系统可用于需要快速焦距调谐的许多应用中，例如光学切换，扫描共焦显微镜和光学存储盘中的振动补偿。

    Drug delivery apparatus
    15.
    发明授权
    Drug delivery apparatus 有权
    药物输送装置

    公开(公告)号：US07867193B2

    公开(公告)日：2011-01-11

    申请号：US11046540

    申请日：2005-01-28

    申请人： Michael J. McKenna ,  Jason O. Fiering ,  Mark J. Mescher ,  Sharon G. Kujawa ,  William F. Sewell ,  Anthony A. Mikulec

    发明人： Michael J. McKenna ,  Jason O. Fiering ,  Mark J. Mescher ,  Sharon G. Kujawa ,  William F. Sewell ,  Anthony A. Mikulec

    IPC分类号： A61M29/00 ,  A61M37/00 ,  A61M31/00 ,  A61N1/30

    CPC分类号： A61M5/14276 ,  A61F11/00 ,  A61M5/14224 ,  A61M5/1723 ,  A61M31/002 ,  A61M2205/0244 ,  A61M2205/3379 ,  A61M2210/0662 ,  A61M2210/0668

    摘要： An implantable drug delivery apparatus for delivering a drug into a bodily fluid in a body cavity of a patient over a period of time, which includes a hollow member that defines at least one lumen for facilitating a unidirectional recirculating flow of a therapeutic fluid through the lumen. The fluid can contain a bodily fluid, such as, for example, perilymph, and a drug. The apparatus also includes a pump, for example a single unidirectional pump, to control the flow rate of the therapeutic fluid through the hollow member, and an interface member in communication with at least one lumen of the hollow member. The device thus allows for the controlled delivery of the therapeutic fluid to a predetermined location in the bodily cavity of the patient, such as, for example, a cochlea of a human ear.

    摘要翻译： 一种可植入药物输送装置，用于将药物输送到患者体腔中的体液一段时间，该时间段包括限定至少一个内腔的中空构件，以便于治疗流体通过内腔的单向循环流动 。 流体可以包含体液，例如外淋巴液和药物。 该装置还包括泵，例如单个单向泵，以控制通过中空构件的治疗流体的流速，以及与中空构件的至少一个内腔连通的界面构件。 因此，该装置允许治疗性流体的受控输送到患者体腔中的预定位置，例如人耳的耳蜗。