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    • 6. 发明申请
    • Vessel Retractor
    • 船舶牵引器
    • US20080103365A1
    • 2008-05-01
    • US11969318
    • 2008-01-04
    • John LunsfordCharles AdamJohn DavisAlbert Chin
    • John LunsfordCharles AdamJohn DavisAlbert Chin
    • A61B1/32
    • A61B17/3421A61B1/3137A61B1/32A61B17/00008A61B17/0218A61B2017/00778A61B2017/320044A61B2017/3456
    • A retractor and a surgical tool are positioned within a cannula, and a dissection cradle of the retractor is positioned at the distal end of the cannula. The retractor includes a first portion with an axis approximately parallel to the axis of the cannula and a second portion with an axis that can be skewed relative to the axis of the cannula. The dissection cradle is located at the distal end of the second portion of the retractor, and may include two substantially parallel, spaced legs with the retractor shaped in a loop between and in a plane skewed relative to the axes of the legs, and with the loop directed away from the surgical tool. Thus, in operation, a surgeon locates a vessel and side branch of interest and extends the retractor to cradle the vessel in the dissection cradle. Once cradled, the retractor may be deflected to urge the vessel away from the axis of the cannula to isolate the side branch for exposure to the surgical tool. Removable, transparent tips are selectively positioned at the distal end of the cannula for performing dissection and transection via a single cannula. Additionally, the tips are configured to align the apices of the tips with the central axis of the endoscope to maximize the visual field through the tips via the endoscope. Wing-like protrusions on an alternate tip for the cannula facilitate tissue dissection in forming a tunnel in tissue along a target vessel. Swept back forward edges on the wing-like protrusions promote easy dissection using reduced force to advance the cannula and alternate tip tough tissue surrounding the target vessel.
    • 牵开器和手术工具定位在套管内,并且牵开器的解剖支架位于套管的远端。 牵开器包括具有大致平行于套管轴线的轴线的第一部分和具有相对于套管轴线可偏斜的轴线的第二部分。 解剖支架位于牵开器的第二部分的远端,并且可以包括两个基本上平行的间隔开的腿,其中牵开器成形为相对于腿的轴线倾斜的平面之间的环中,并且与 环路远离手术工具。 因此,在操作中,外科医生定位感兴趣的血管和侧支,并且将牵开器延伸到支架中,以将解剖支架中的血管摇动。 一旦收起,收缩器可能被偏转以促使血管远离套管的轴线以隔离侧分支以暴露于外科手术工具。 可移除的透明尖端选择性地定位在套管的远端,以通过单个插管进行解剖和切断。 另外,尖端被配置成将尖端的顶点与内窥镜的中心轴线对准,以通过内窥镜通过尖端最大化视野。 用于插管的备选尖端上的翼状突起促进组织解剖,以沿着靶容器在组织中形成隧道。 在翼状突起上扫掠前部前缘促进易于使用减小力的解剖以推进​​套管和围绕目标血管的交替的尖端韧性组织。
    • 7. 发明授权
    • Flash memory cells having leakage-inhibition layers
    • 具有泄漏抑制层的闪存单元
    • US08735963B2
    • 2014-05-27
    • US12168545
    • 2008-07-07
    • Ming-Tsong WangTong-Chern OngAlbert ChinHsueh-Jen Yang
    • Ming-Tsong WangTong-Chern OngAlbert ChinHsueh-Jen Yang
    • H01L29/792
    • H01L29/792H01L29/513H01L29/518
    • A semiconductor device includes a semiconductor substrate; a tunneling layer over the semiconductor substrate, wherein the tunneling layer has a first conduction band; a storage layer over the tunneling layer, wherein the storage layer has a second conduction band; a blocking layer over the storage layer, wherein the blocking layer has a third conduction band; a gate electrode over the blocking layer; and at least one of a first leakage-inhibition layer and a second leakage-inhibition layer. The first leakage-inhibition layer is between the tunneling layer and the storage layer, and has a fourth conduction band lower than the first conduction band. The second leakage-inhibition layer is between the blocking layer and the gate electrode, and has a fifth conduction band lower than the third conduction band.
    • 半导体器件包括半导体衬底; 在所述半导体衬底上的隧道层,其中所述隧道层具有第一导带; 在所述隧道层上的存储层,其中所述存储层具有第二导带; 在所述存储层上的阻挡层,其中所述阻挡层具有第三导带; 阻挡层上的栅电极; 以及第一泄漏抑制层和第二泄漏抑制层中的至少一个。 第一泄漏抑制层在隧道层和存储层之间,并且具有比第一导带低的第四导带。 第二泄漏抑制层位于阻挡层和栅电极之间,并且具有比第三导带低的第五导带。