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    • 48. 发明授权
    • Tubular compliant mechanisms for ultrasonic imaging systems and intravascular interventional devices
    • 超声成像系统和血管内介入装置的管状顺应机制
    • US07115092B2
    • 2006-10-03
    • US10667230
    • 2003-09-18
    • Byong-Ho ParkFriedrich B. PrinzDavid H. Liang
    • Byong-Ho ParkFriedrich B. PrinzDavid H. Liang
    • A61B1/00
    • A61B8/12A61B1/0008A61M25/0105A61M25/0158A61M2025/0058
    • A micromanipulator comprising a tubular structure and a structural compliance mechanism that are formed from a tube made of an elastic and/or superelastic material. Fabricated with laser machining and has no mechanical joints, the micromanipulator can be manipulated in various motions and degree-of-freedoms without permanent deformation. Shape Memory Alloys (SMAs) in one embodiment are implemented as main actuators of the micromanipulator. The micromanipulator can be implemented with multiple SMAs to manipulate the mechanism with multiple degree-of-freedom. In another implementation, multiple segments of the mechanisms are formed and arranged in various configurations, including a “double-helix”-like configuration, for enabling intricate motions of the micromanipulator. The micromanipulator is useful for intravascular interventional applications and particularly ultrasonic imaging when coupled with an ultrasound transducer.
    • 一种显微操纵器,其包括由弹性和/或超弹性材料制成的管形成的管状结构和结构顺应性机构。 采用激光加工而没有机械接头,可以以各种运动和自由度操纵显微操纵器,而不会发生永久变形。 形状记忆合金(SMA)在一个实施例中被实现为微操纵器的主要致动器。 显微操纵器可以用多个SMA来实现,以多重自由度来操纵机构。 在另一个实施方案中,机构的多个部分形成并布置成各种构造,包括“双螺旋”状构造,用于使复杂运动的微操纵器运动。 显微操纵器可用于血管内介入应用,特别是与超声波换能器耦合时的超声波成像。
    • 50. 发明授权
    • Mold shape deposition manufacturing
    • 模具形状沉积制造
    • US06375880B1
    • 2002-04-23
    • US09164415
    • 1998-09-30
    • Alexander G. CooperJohn W. KietzmanFriedrich B. Prinz
    • Alexander G. CooperJohn W. KietzmanFriedrich B. Prinz
    • B29C3338
    • B29C33/52B29C33/3842B29C64/124B29C64/40B29C2793/009B29L2031/757B33Y10/00B33Y70/00
    • A method of making molded parts employing Shape Deposition Manufacturing (SDM) techniques. First, SDM processes are used to make a layered structure having support segments and mold segments. The support segments are made of material which may be removed from the mold segments (e.g. dissolved or melted). The mold segments are made of a material which can function as a mold. The mold and support segments are sequentially deposited (e.g. in layers) and shaped (e.g. machined) to form a mold. The support segments define the shape of the part to be manufactured. The mold segments are removed from the support segments by dissolving or melting away the support segments, leaving an empty mold. Then, part material is cast into the empty mold. The mold is removed, providing a molded part. The part material can be a gelcasting slurry, for example. The present method provides homogeneous or heterogeneous parts having shapes which are accurately defined by the SDM process.
    • 使用形状沉积制造(SDM)技术制造模制件的方法。 首先,SDM工艺用于制作具有支撑段和模具段的分层结构。 支撑段由可从模具段(例如溶解或熔化)中移除的材料制成。 模具段由可用作模具的材料制成。 模具和支撑段依次沉积(例如,层)和成形(例如机加工)以形成模具。 支撑段限定要制造的零件的形状。 通过溶解或熔化支撑段,将模具段从支撑段移除,留下空模。 然后将零件材料浇注到空模具中。 去除模具,提供模制件。 例如,部件材料可以是凝胶浇注浆料。 本方法提供具有由SDM工艺精确定义的形状的均质或异质部件。