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    • 7. 发明申请
    • Epoxidation process
    • 环氧化工艺
    • US20100331556A1
    • 2010-12-30
    • US12459065
    • 2009-06-26
    • Jay F. MillerJohn H. Speidel, JR.
    • Jay F. MillerJohn H. Speidel, JR.
    • C07D301/12
    • C07D301/12C07D301/32
    • This invention is a process for producing propylene oxide. The process comprises first contacting a titanium zeolite with a reaction feed comprising propylene, hydrogen peroxide, tertiary butyl alcohol, and water to produce a product stream comprising propylene, propylene oxide, propylene glycol, tertiary butyl alcohol, and water. The product stream is distilled to produce a first overhead stream comprising propylene and a first bottoms stream comprising propylene oxide, propylene glycol, tertiary butyl alcohol, and water. The first bottoms stream is distilled to produce a second overhead stream comprising propylene oxide and a second bottoms product stream comprising propylene glycol, tertiary butyl alcohol, and water. The second bottoms stream is distilled to produce a third overhead stream comprising an azeotrope of tertiary butyl alcohol and water and a third bottoms stream comprising propylene glycol and water.
    • 本发明是一种生产环氧丙烷的方法。 该方法包括首先使钛沸石与包含丙烯,过氧化氢,叔丁醇和水的反应进料接触,以产生包含丙烯,环氧丙烷,丙二醇,叔丁醇和水的产物流。 将产物流蒸馏以产生包含丙烯的第一塔顶物流和包含环氧丙烷,丙二醇,叔丁醇和水的第一塔底物流。 将第一塔底物流蒸馏以产生包含环氧丙烷的第二塔顶物流和包含丙二醇,叔丁醇和水的第二塔底物产物流。 蒸馏第二塔底物流以产生包含叔丁醇和水的共沸物的第三塔顶物流和包含丙二醇和水的第三塔底物流。
    • 8. 发明授权
    • Method for making a balloon catheter stent deployment system
    • 球囊导管支架展开系统的制作方法
    • US06289568B1
    • 2001-09-18
    • US09192899
    • 1998-11-16
    • Jay F. MillerEdward J. Play
    • Jay F. MillerEdward J. Play
    • B23D1700
    • A61M25/0014A61F2/958Y10T29/4981Y10T29/49927
    • A balloon catheter and stent delivery system for medical treatment of a patient includes a balloon inflatable to an inflated shape having a cylindrical working portion, and a deflated shape that is temporarily reformed to enhance longitudinal retention of the stent while the catheter system is advanced or withdrawn. The balloon catheter provides for uniform expansion of the stent when the balloon is inflated. In addition, the balloon catheter system can be modified to initiate partial inflation of the proximal and distal ends of the stent, to further resist longitudinal motion of the stent during inflation, and to facilitate more effective tacking of the stent. One possible feature of the catheter system is that the balloon is pleated in a particular pattern when deflated, whereby the central balloon portion carrying the stent has a greater number of pleats than the shoulder portions proximal and distal of the stent. Another possible feature is the formation of small channels that facilitate fluid communication from the proximal end of the balloon to the distal end, even when the balloon is deflated. The balloon may be formed to protrude partially outward among the stent interstices while in its deflated state, further enhancing stent position retention. The present invention also protects the leading or distal end of the stent during advancement, and protects the proximal end of the stent during any withdrawal of the catheter system.
    • 用于患者医疗处理的球囊导管和支架输送系统包括可膨胀至具有圆柱形工作部分的膨胀形状的球囊,以及当导管系统前进或撤回时暂时重新形成以增强支架纵向保持力的放气形状 。 当气囊膨胀时,气囊导管提供支架的均匀膨胀。 此外,气囊导管系统可以被修改以引起支架的近端和远端的部分充气,以进一步阻止支架在充胀期间的纵向运动,并且有助于更有效地固定支架。 导管系统的一个可能的特征是当放气时气囊以特定的图案打褶,由此承载支架的中心球囊部分具有比支架近端和远端的肩部更大数量的褶皱。 另一个可能的特征是形成小通道,其促进从球囊的近端到远端的流体连通,即使当气囊被放气时。 气囊可以被形成为在其放气状态下部分地向外伸出支架间隙,进一步增强支架位置保持力。 本发明还在前进期间保护支架的前端或远端,并且在任何取出导管系统期间保护支架的近端。