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79 条记录 (耗时 0.034 秒)

    System and method for introducing a prosthesis
    24.
    发明申请
    System and method for introducing a prosthesis 审中-公开
    用于引入假体的系统和方法

    公开(公告)号：US20050070821A1

    公开(公告)日：2005-03-31

    申请号：US10902492

    申请日：2004-07-29

    申请人： Stephen Deal ,  Gregory Skerven ,  Victor Clark ,  David Waller

    发明人： Stephen Deal ,  Gregory Skerven ,  Victor Clark ,  David Waller

    IPC分类号： A61B1/01 ,  A61B1/018 ,  A61B6/12 ,  A61B17/22 ,  A61F2/04 ,  A61M25/00 ,  A61M25/06 ,  A61B5/00

    CPC分类号： A61B1/018 ,  A61B6/12 ,  A61B17/221 ,  A61B2017/2212 ,  A61F2/95 ,  A61F2002/041 ,  A61F2002/9511 ,  A61M25/0029 ,  A61M25/0662 ,  A61M25/10 ,  A61M2025/0183 ,  A61M2025/0681

    摘要： A method and apparatus for introducing a first elongate medical device and short wire guide that are coupled together into a work site and remotely disconnecting them within the work site such that a secondary device comprising a catheter member can be introduced over the wire guide to the work site, and/or a second wire guide can be introduced to the work site via a passageway of the primary access device. A system of indicia, such as radiopaque or viewable markers, permits the operator to monitor the relative alignment of the devices within the work site to determine when uncoupling has occurred. In one example of the method, a wire guide and primary access device (e.g., a sphincterotome) is coupled to the wire guide and introduced via a duodenoscope into the biliary system. After performing a first medical operation, the devices are uncoupled with the wire guide being left within the biliary system such that a secondary access device, such as a balloon, biopsy device, stent delivery catheter, dilator, etc., can be introduced to perform a second medical operation without a traditional over-the-wire exchange being required. In another example of the method, a prosthesis, such as a valve or stent, is placed within the work site coupled to a wire guide which is remotely disconnected within the work site and a secondary device, such as a dilation balloon or second prosthesis, is introduced into the work site after the first delivery system is removed.

    摘要翻译： 一种用于引入第一细长医疗装置和短线引导件的方法和装置，所述第一细长医疗装置和短导线引导件联接在一起成为工作现场并在工作现场内远程地断开它们，使得包括导管部件的辅助装置可以被引导到导线器上， 现场和/或第二导线引导件可以经由主接入设备的通道引入到工作现场。 诸如不透射线或可见标记的标记系统允许操作者监视工作现场内的设备的相对对准以确定何时发生解偶联。 在该方法的一个示例中，线导向器和主入口装置（例如括约肌切开机）联接到线导引件并经十二指肠镜引入胆道系统。 在执行第一次医疗操作之后，将装置与线引导件脱离在胆汁系统内，使得可以引入二次进入装置，例如气囊，活检装置，支架输送导管，扩张器等，以执行 不需要传统的线上交换即可进行第二次医疗。 在该方法的另一示例中，诸如阀或支架的假体被放置在工作部位内，该工作部位与工作部位远程断开的线引导件相连，并且辅助装置（例如扩张气囊或第二假体） 在第一个传送系统被删除之后被引入工作现场。

    Method for manufacturing a membrane
    25.
    发明授权
    Method for manufacturing a membrane 失效
    膜的制造方法

    公开(公告)号：US06613384B1

    公开(公告)日：2003-09-02

    申请号：US09913795

    申请日：2001-08-16

    申请人： David Waller

    发明人： David Waller

    IPC分类号： B05D302

    CPC分类号： B01D67/0046 ,  B01D67/0041 ,  B01D67/0088 ,  B01D71/02 ,  B01D71/024 ,  B01D2323/18 ,  B01D2325/04 ,  C01B13/0255 ,  C01B2210/0046

    摘要： The present invention relates to a method for manufacturing a dense and crack-free ceramic membrane which selectively transports oxygen when it is subjected to an oxygen partial pressure gradient, by the following steps: a) preparation of a porous ceramic substrate, with an open network of pores, which allows the transport of gas; b) deposition of a film or coating of an oxygen ion conducting material onto the porous ceramic substrate, by contacting the porous substrate with a colloidal dispersion or slip; c) thermally treating the substrate and film or coating to produce a dense, crack-free membrane on the surface of the porous substrate.

    摘要翻译： 本发明涉及一种用于制造致密且无裂纹的陶瓷膜的方法，其通过以下步骤选择性地输送氧气：a）制备具有开放网络的多孔陶瓷基板 的气孔，允许气体运输; b）通过使多孔基底与胶体分散体或滑移接触，将氧离子传导材料的膜或涂层沉积到多孔陶瓷基底上; c）热处理基材和薄膜或涂层以在多孔基材的表面上产生致密的，无裂纹的膜。

    Photoacoustic measurement of unburned carbon in fly-ash
    26.
    发明授权
    Photoacoustic measurement of unburned carbon in fly-ash 失效
    飞灰中未燃碳的光声测量

    公开(公告)号：US5596146A

    公开(公告)日：1997-01-21

    申请号：US254153

    申请日：1994-06-06

    申请人： David Waller ,  Robert C. Brown

    发明人： David Waller ,  Robert C. Brown

    IPC分类号： G01N21/17 ,  G01N29/032 ,  G01N29/24 ,  G01N29/00

    CPC分类号： G01N29/2425 ,  G01N21/1702 ,  G01N29/032 ,  G01N2021/1704 ,  G01N2291/02408

    摘要： The present invention provides a method and an apparatus for measuring the amount of unburned carbon in a sample of fly ash using infrared photoacoustic absorption. One preferred method according to the present invention involves directing modulated infrared radiation at a sample of fly ash and measuring the acoustic signal produced when the unburned carbon in the sample absorbs the radiation producing a thermal wave which propagates through the sample to generate a minute acoustic wave at interfaces between the carbon particles and gas surrounding the particles. One preferred apparatus includes a source of modulated infrared radiation, a chamber for containing the sample, a microphone to detect the acoustic signals, lock-in amplifier to separate the desired photoacoustic signal from noise at other frequencies, and a PC computer to provide output from the amplifier. This apparatus identifies the acoustic signal for determination of the amount of unburned carbon in the sample.

    摘要翻译： 本发明提供一种使用红外光声吸收测量飞灰样品中未燃烧碳量的方法和装置。 根据本发明的一种优选的方法包括将调制的红外辐射引导到飞灰样品处，并测量当样品中的未燃碳吸收辐射时产生的声波信号，产生传播通过样品的热波，以产生微小的声波 在碳颗粒与颗粒周围的气体之间的界面处。 一种优选的装置包括调制红外辐射源，用于容纳样品的室，用于检测声信号的麦克风，锁定放大器以将期望的光声信号与其他频率的噪声分离，以及PC计算机，以提供从 放大器。 该装置识别用于确定样品中未燃碳量的声信号。

    Music searching methods based on human perception
    29.
    发明授权
    Music searching methods based on human perception 有权
    基于人类感知的音乐搜索方法

    公开(公告)号：US08326584B1

    公开(公告)日：2012-12-04

    申请号：US09556086

    申请日：2000-04-21

    申请人： Maxwell J. Wells ,  David Waller ,  Navdeep S. Dhillon

    发明人： Maxwell J. Wells ,  David Waller ,  Navdeep S. Dhillon

    IPC分类号： G06F17/10

    CPC分类号： G06F17/30758 ,  G06F17/10 ,  G06F17/30017 ,  G06F17/30026 ,  G06F17/30743 ,  G06F17/30749 ,  G06F2213/0038 ,  G06F2216/01

    摘要： A method for characterizing a musical recording as a set of scalar descriptors, each of which is based on human perception. A group of people listens to a large number of musical recordings and assigns to each one many scalar values, each value describing a characteristic of the music as judged by the human listeners. Typical scalar values include energy level, happiness, danceability, melodicness, tempo, and anger. Each of the pieces of music judged by the listeners is then computationally processed to extract a large number of parameters which characterize the electronic signal within the recording. Algorithms are empirically generated which correlate the extracted parameters with the judgments based on human perception to build a model for each of the scalars of human perception. These models can then be applied to other music which has not been judged by the group of listeners to give to each piece of music a set of scalar values based on human perception. The set of scalar values can be used to find other pieces that sound similar to humans or vary in a dimension of one of the scalars.

    摘要翻译： 一种用于将音乐记录表征为一组标量描述符的方法，每个标量描述符基于人的感知。 一群人听大量的音乐录音，并分配给每一个许多标量值，每个值都描述了由人类听众判断的音乐特征。 典型的标量值包括能量水平，幸福度，舞蹈能力，旋律，节奏和愤怒。 然后对由收听者判断的每首音乐进行计算处理，以提取表征记录内的电子信号的大量参数。 算法是经验生成的，其将提取的参数与基于人类感知的判断相关联，以构建人类感知的每个标量的模型。 然后，这些模型可以应用于未被听众群体判断的其他音乐，以便基于人类的感知向每首音乐提供一组标量值。 标量值的集合可以用于查找听起来类似于人类的其他部分或在其中一个标量的维度上变化。