Laser-based sensor for measuring an external magnetic field

    公开(公告)号:US10082545B2

    公开(公告)日:2018-09-25

    申请号:US14879769

    申请日:2015-10-09

    CPC classification number: G01R33/032

    Abstract: In general, techniques of this disclosure are directed to a sensor for measuring an external magnetic field. The sensor an optical cavity, a laser medium which together with the optical cavity has a laser threshold, a laser pump, and a radio-frequency (RF) drive applied to the laser medium, such that the laser threshold varies with a change in the external magnetic field. The RF drive may be applied to the laser medium at or around a particular resonance frequency which varies depending on the external magnetic field, such that depending on the value of the external magnetic field, the RF drive induces transitions between at least two states of the laser medium, each state causing a different laser threshold in an intensity of a laser output. Further, the intensity of the laser output may provide a measurement of the value of the external magnetic field.

    A METHOD FOR PRODUCING A CUSTOMISED ORTHOPAEDIC IMPLANT
    4.
    发明申请
    A METHOD FOR PRODUCING A CUSTOMISED ORTHOPAEDIC IMPLANT 审中-公开
    用于生产定制的正交植入物的方法

    公开(公告)号:US20170071747A1

    公开(公告)日:2017-03-16

    申请号:US15123024

    申请日:2015-03-04

    Abstract: A method for producing a customised orthopaedic implant is provided. The method involves scanning a bone from which a diseased region of bone will be resected to obtain a three dimensional digital image of an unresected volume of bone; scanning the bone after a diseased region of bone has been resected to obtain a corresponding three dimensional digital image of a resected volume of bone; and comparing the three dimensional digital image of the unresected volume of bone to the corresponding three dimensional digital image of the resected volume of bone to estimate a volume of bone that has been resected. The estimate of the volume of bone that has been resected is used to design a customised orthopaedic implant that substantially corresponds to the configuration of the resected volume of bone, the implant being configured to substantially restore a biomechanical function of the bone. Finally the customised orthopaedic implant is manufactured and provided for insertion into the resected region of bone.

    Abstract translation: 提供了一种用于生产定制的矫形植入物的方法。 该方法包括扫描骨头,从其中切除患病区域以获得未切割体积的骨的三维数字图像; 在切除了患病区域之后扫描骨,以获得切除体积的骨的相应的三维数字图像; 并将未切割体积的骨的三维数字图像与切除的骨量的相应三维数字图像进行比较,以估计已被切除的骨的体积。 已经切除的骨的体积的估计用于设计基本上对应于骨的切除体积的构造的定制的整形外科植入物,植入物被配置为基本上恢复骨的生物力学功能。 最后,制造并提供定制的矫形植入物用于插入到骨的切除区域中。

    SENSOR FOR MEASURING AN EXTERNAL MAGNETIC FIELD
    5.
    发明申请
    SENSOR FOR MEASURING AN EXTERNAL MAGNETIC FIELD 审中-公开
    用于测量外部磁场的传感器

    公开(公告)号:US20170030982A1

    公开(公告)日:2017-02-02

    申请号:US14879769

    申请日:2015-10-09

    CPC classification number: G01R33/032

    Abstract: In general, techniques of this disclosure are directed to a sensor for measuring an external magnetic field. The sensor an optical cavity, a laser medium which together with the optical cavity has a laser threshold, a laser pump, and a radio-frequency (RF) drive applied to the laser medium, such that the laser threshold varies with a change in the external magnetic field. The RF drive may be applied to the laser medium at or around a particular resonance frequency which varies depending on the external magnetic field, such that depending on the value of the external magnetic field, the RF drive induces transitions between at least two states of the laser medium, each state causing a different laser threshold in an intensity of a laser output. Further, the intensity of the laser output may provide a measurement of the value of the external magnetic field.

    Abstract translation: 通常,本公开的技术涉及用于测量外部磁场的传感器。 传感器是光腔,与光腔一起具有激光阈值的激光介质,激光泵和施加到激光介质的射频(RF)驱动,使得激光阈值随着 外部磁场。 RF驱动器可以在或围绕根据外部磁场而变化的特定谐振频率施加到激光介质,使得根据外部磁场的值,RF驱动器在至少两个状态之间引起转换 激光介质,每个状态在激光输出的强度下引起不同的激光阈值。 此外,激光输出的强度可以提供外部磁场的值的测量。

    A MAGNETO-ENCEPHALOGRAPHY DEVICE
    7.
    发明申请

    公开(公告)号:US20180259597A1

    公开(公告)日:2018-09-13

    申请号:US15748117

    申请日:2016-07-27

    CPC classification number: G01R33/032

    Abstract: A magneto-encephalography device including a plurality of laser threshold magnetometers for measuring a magnetic field is provided. Each laser threshold magnetometer includes an optical cavity, a laser medium which together with the optical cavity has a laser threshold; a laser pump; and a radio-frequency (RF) drive applied to the laser medium at or around a particular resonance frequency which varies depending on the magnetic field, such that depending on the value of the physical parameter, the RF drive induces transitions between at least two states of the laser medium, each state causing a different laser threshold in an intensity of a laser output, wherein the intensity of the laser output provides a measurement of the magnitude of the magnetic field; wherein the laser threshold magnetometers are configured to be placed on a head of a subject to be monitored.

    A MAGNETO-ENCEPHALOGRAPHY DEVICE
    10.
    发明申请
    A MAGNETO-ENCEPHALOGRAPHY DEVICE 审中-公开
    磁铁制造装置

    公开(公告)号:WO2017015712A1

    公开(公告)日:2017-02-02

    申请号:PCT/AU2016/050667

    申请日:2016-07-27

    CPC classification number: A61B5/04 G01R33/26 H01S3/0014 H01S3/102

    Abstract: A magneto-encephalography device including a plurality of laser threshold magnetometers for measuring a magnetic field is provided. Each laser threshold magnetometer includes an optical cavity, a laser medium which together with the optical cavity has a laser threshold; a laser pump; and a radio-frequency (RF) drive applied to the laser medium at or around a particular resonance frequency which varies depending on the magnetic field, such that depending on the value of the physical parameter, the RF drive induces transitions between at least two states of the laser medium, each state causing a different laser threshold in an intensity of a laser output, wherein the intensity of the laser output provides a measurement of the magnitude of the magnetic field; wherein the laser threshold magnetometers are configured to be placed on a head of a subject to be monitored.

    Abstract translation: 提供了包括用于测量磁场的多个激光阈值磁力计的磁脑成像装置。 每个激光阈值磁力计包括光腔,与光腔一起具有激光阈值的激光介质; 激光泵; 以及在特定共振频率处或附近的激光介质上施加的射频(RF)驱动,其根据磁场而变化,使得根据物理参数的值,RF驱动器在至少两个状态之间引起转变 激光介质的每个状态在激光输出的强度下引起不同的激光阈值,其中激光输出的强度提供了磁场强度的测量值; 其中所述激光阈值磁力计配置成放置在待监测对象的头部上。

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