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    • 8. 发明申请
    • Apparatus for surgical instrument location
    • 手术器械位置仪器
    • US20050107801A1
    • 2005-05-19
    • US10495998
    • 2002-11-01
    • Brian DaviesJustin Cobb
    • Brian DaviesJustin Cobb
    • A61B17/00A61B17/15A61B17/17A61B19/00A61B17/58
    • A61B17/17A61B17/00234A61B17/15A61B17/155A61B17/157A61B17/1746A61B17/175A61B17/1764A61B34/20A61B90/11A61B2017/00455
    • An apparatus for surgical instrument location comprises a generally cylindrical tube (10,12,14) one end of which preferably includes teeth (20) for securing the tube to an area of bone to be prepared for an implant. An insert (60) fits within the tube and has a longitudinal aperture (64) the lateral edges of which define an operational area for an instrument inserted through the aperture. Means are provided for selectively positioning the aperture at a desired longitudinal and rotational position within the tube. An outer end (66) of the aperture is shaped, and forms a camming surface which, in co-operation with a cam follower on the surgical instrument, varies the longitudinal position of the instrument within the tube as the instrument is moved laterally across the operational area. Different sizes and shapes of tube may be provided, along with different inserts for each tube, allowing the surgeon to select an appropriate combination. The apparatus provides an inexpensive passive guidance system for use in minimal access surgery. The apparatus further protects surrounding tissues from debris.
    • 用于外科器械位置的装置包括大致圆柱形的管(10,12,14),其一端优选地包括用于将管固定到待准备植入物的骨的区域的齿(20)。 插入件(60)装配在管内并且具有纵向孔(64),其横向边缘限定用于插入穿过孔的器械的操作区域。 提供了用于选择性地将孔定位在管内期望的纵向和旋转位置的装置。 孔的外端(66)成形,并且形成凸轮表面,该凸轮表面与外科器械上的凸轮从动件配合,当仪器横向移动时改变仪器在管内的纵向位置 操作区域 可以提供不同尺寸和形状的管,以及每个管的不同插入件,允许外科医生选择适当的组合。 该装置提供了用于最小化手术的便宜的被动引导系统。 该装置进一步保护周围组织免受碎片影响。
    • 10. 发明授权
    • Early sample evaluation during coarse rasterization
    • 粗略光栅化期间的早期样本评估
    • US09495781B2
    • 2016-11-15
    • US13529295
    • 2012-06-21
    • Eric LumWalter R. SteinerJustin Cobb
    • Eric LumWalter R. SteinerJustin Cobb
    • G06T15/40G06T11/40G06T15/00
    • G06T11/40G06T15/005
    • A technique for early sample evaluation during coarse rasterization of primitives reduces the number of pixel tiles that are processed during fine rasterization of the primitive. A primitive bounding box determines when a primitive is small and may not actually cover any samples within at least one fine raster tile. Early sample evaluation is performed for the small primitive during coarse rasterization and the small primitive is discarded when no samples are actually covered by the small primitive. When the small primitive lies on a boundary between at least two fine raster tiles, early sample evaluation is performed during coarse rasterization to correctly identify which, if any, of the at least two fine raster tiles includes samples that are actually covered by the small primitive.
    • 在原始粗略光栅化期间进行早期样本评估的技术减少了在原始图像的精细光栅化期间处理的像素块的数量。 原始边界框决定了一个原始小体,并且实际上不能覆盖至少一个精细的栅格图块内的任何样本。 在粗略光栅化期间对小原语执行早期样本评估,并且当小样本实际上被小原语覆盖时,小原语被丢弃。 当小原语位于至少两个精细光栅瓦片之间的边界上时,在粗略光栅化期间执行早期样本评估以正确地识别至少两个精细光栅瓦片中的哪一个(如果有的话)包括实际被小图元覆盖的样本 。