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    • 3. 发明申请
    • BIODEGRADABLE MEDICAL IMPLANTS, POLYMER COMPOSITIONS AND METHODS OF USE
    • 生物可降解医用植入物,聚合物组合物和使用方法
    • US20130325108A1
    • 2013-12-05
    • US13261054
    • 2010-06-01
    • Mir ImranSanjay PatelJoel Harris
    • Mir ImranSanjay PatelJoel Harris
    • A61L27/14A61F2/04A61F2/82
    • A61L27/14A61F2/04A61F2/06A61F2/07A61F2/82A61F2210/0004A61L27/26A61L27/58A61L31/041A61L31/148
    • Embodiments of the invention provide compositions comprising bio degradable polymers, medical implants fabricated from these compositions and methods of using such implants. Many embodiments provide medical implants comprising a first polymer backbone having a first rate of biodegradation and a second polymer backbone having a second rate of biodegradation faster than the first rate. In some embodiments, the second backbone is configured to be replaced by a natural tissue layer. The first backbone provides a scaffold for the implant while the second backbone degrades. This scaffold can enhance mechanical properties of the implant including various aspects of mechanical strength such as tensile, bending, hoop and yield strength; and elasticity. The scaffold also serves to maintain a minimum level of structural support of the implant during the period of degradation of the second backbone or for the entire life of the implant so that the implant does not mechanically fail.
    • 本发明的实施方案提供了包含生物可降解聚合物,由这些组合物制造的医疗植入物和使用这种植入物的方法的组合物。 许多实施方案提供医学植入物,其包含具有第一生物降解速率的第一聚合物主链和具有比第一速率快的第二生物降解速率的第二聚合物主链。 在一些实施例中,第二主干被配置为由天然组织层代替。 第一个骨架提供植入物的支架,而第二个骨架降解。 该支架可以增强植入物的机械性能,包括机械强度的各个方面,例如拉伸,弯曲,箍和屈服强度; 和弹性。 支架还用于在第二主骨架的退化期间或植入物的整个寿命期间保持植入物的最小结构支撑水平,使得植入物不会机械地失效。
    • 4. 发明申请
    • METHOD AND APPARATUS FOR THE DETECTION OF ABERRANT NEURAL-ELECTRIC ACTIVITY
    • 用于检测ABERRANT神经电活动的方法和装置
    • US20100191305A1
    • 2010-07-29
    • US12359830
    • 2009-01-26
    • Mir ImranLu WangParen ShahJoel Harris
    • Mir ImranLu WangParen ShahJoel Harris
    • A61N1/36A61B5/0478A61M5/00
    • A61B5/04001A61B5/04004A61B5/0478A61B5/0531A61B5/4094A61N1/0529A61N1/0539A61N1/36017A61N1/36025A61N1/36064A61N1/36082
    • Embodiments provide an apparatus and method for detection of aberrant neural-electric activity (ANEA) in the brain causing an epileptic seizure or other neurologic condition. One embodiment provides an apparatus for detection of ANEA comprising an introducer having at least one lumen. The introducer is introduced into brain tissue through an opening in the skull. A reference electrode is positioned at an introducer distal portion. A plurality of electrode members are advanceable within the at least one lumen with each member having an insulated portion and an exposed distal portion. The members have a non-deployed state in the introducer and a deployed state when outwardly advanced out of the introducer. In the deployed state, the members are substantially orthogonal to each other with the exposed distal portions defining a detection volume capable of determining an electric field vector produced by the ANEA and the direction of a foci of the ANEA.
    • 实施例提供了用于检测脑中异常神经电活动(ANEA)的装置和方法,其引起癫痫发作或其他神经病症。 一个实施例提供了一种用于检测ANEA的装置,包括具有至少一个内腔的导引器。 导引器通过头骨中的开口引入脑组织。 参考电极位于导引器远端部分。 多个电极构件可在至少一个内腔内前进,每个构件具有绝缘部分和暴露的远端部分。 这些构件在导引器中具有非展开状态,并且当向外推进导引器时处于展开状态。 在展开状态下,构件基本上彼此正交,暴露的远侧部分限定能够确定由ANEA产生的电场矢量和ANEA焦点方向的检测体积。
    • 6. 发明申请
    • Motor driven sampling apparatus for material collection
    • 用于材料收集的电机驱动取样装置
    • US20050066751A1
    • 2005-03-31
    • US10673287
    • 2003-09-30
    • Joel Harris
    • Joel Harris
    • G01N1/08
    • G01N1/08
    • An apparatus to excise a sample of material and temporarily store sample has a hollow clamshell casing with a blended grip under which is a tubular sample sleeve extends downwards from the base of the grip. Within the casing an electric motor is housed which drives, via juxtaposed spur gears, the sample sleeve in a rotational manner. The end of the sample sleeve, distal from the clamshell casing, forms a cutting edge circumscribing a circular region. An ejection rod slides reciprocally within the sample sleeve between a stowed position and an expulsion position. When the ejection rod moves from the stowed position to the expulsion position it will extend past the cutting edge and expel any material sample contained within the sample sleeve. A user cuts a sample from a source material resting on a pliable substrate, using the cutting edge of the sample sleeve when the ejection rod is in the stowed position. A sample is cut when the cutting blade contacts the source material while gentle downward pressure is applied. The thumb activates the electric drive which rotates the cutting sleeve. Once the source material has been cut it is simultaneously extracted and lodged within the tubular sample sleeve. The extracted sample remains lodged in the hollow of the sample sleeve until the user extends the ejection rod through the sample sleeve to the expulsion position to eject the sample of source material. The automatic return of the eject rod is comprised of a compression spring that biases the ejection shaft which holds the ejection rod in the retracted and stowed positions.
    • 用于切除材料样品并临时储存样品的装置具有中空的蛤壳式壳体,其具有混合夹紧器,管状样品套筒从该把手的底部向下延伸。 在壳体内容纳有电动马达,通过并置的正齿轮以旋转的方式驱动样品套筒。 样品套筒的端部远离蛤壳式壳体形成一个围绕圆形区域的切割边缘。 排出杆在收起位置和排出位置之间在样品套筒内往复滑动。 当排出杆从收起位置移动到排出位置时,其将延伸超过切割边缘并排出包含在样品套筒内的任何材料样品。 使用者在弹出杆处于收起位置时,使用样品套筒的切割边缘将样品从放置在柔韧基底上的源材料切下。 当切割刀片接触源材料同时施加温和的向下压力时,切割样品。 拇指启动旋转切割套筒的电动驱动器。 一旦源材料被切割,它被同时提取并存放在管状样品套筒内。 提取的样品保持在样品套筒的中空部分中,直到使用者将排出杆通过样品套筒延伸到排出位置以排出源材料样品。 弹出杆的自动返回由压缩弹簧构成,该压缩弹簧将将排出杆保持在缩回和收起位置的弹出轴偏压。
    • 7. 发明授权
    • Satellite communication antenna pointing system
    • 卫星通信天线指向系统
    • US06317093B1
    • 2001-11-13
    • US09635937
    • 2000-08-10
    • Joel Harris
    • Joel Harris
    • H01Q300
    • H01Q19/19G01S3/38H01Q1/1257H01Q3/08H01Q19/132
    • An antenna pointing system automatically aligns an antenna with a geo-synchronous satellite using a Ku band signal, which has a relatively broad bandwidth, with sufficient accuracy for Ka band signal transmission, which has a relatively narrow bandwidth. Initially, the antenna is pointed at the selected satellite so as to receive the Ku band signal. The system obtains a series of signal strength readings over a predetermined azimuth (or elevation) region, such as plus/minus two degrees, from which a new peak location is selected. Signal strength data is then obtained over a predetermined elevation (or azimuth) region. Another signal peak location is selected based on the elevation data. Azimuth and elevation data are alternately collected for refining the peak of the Ku signal so as to optimize Ka signal transmission capability.
    • 天线指向系统使用具有相对宽的带宽的Ku波段信号自动对准天线与地球同步卫星,对于具有相对较窄带宽的Ka波段信号传输具有足够的精度。 最初,天线指向所选择的卫星,以便接收Ku波段信号。 该系统在预定的方位角(或高度)区域上获得一系列信号强度读数,例如正/负两度,从中选择新的峰值位置。 然后在预定的高度(或方位))区域获得信号强度数据。 基于高程数据选择另一个信号峰值位置。 交替收集方位角和高程数据,以便优化Ku信号的峰值,从而优化Ka信号传输能力。