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    • 1. 发明申请
    • Novel stent for treatment of bifurcated lesions
    • 用于治疗分叉病变的新型支架
    • US20050288771A1
    • 2005-12-29
    • US10863192
    • 2004-06-08
    • David MajercakMatthew KreverJin ParkRobert BurgermeisterHikmat HojeibaneMartin Leon
    • David MajercakMatthew KreverJin ParkRobert BurgermeisterHikmat HojeibaneMartin Leon
    • A61F2/00A61F2/02A61F2/82A61M29/02A61F2/06
    • A61F2/856A61F2/91A61F2/915A61F2002/821A61F2002/91533A61F2002/91558A61F2210/0004A61F2250/0067
    • A stent includes a lattice defining a substantially cylindrical configuration having a proximal end portion and a distal end portion, and a middle portion between the proximal end and the distal end. The lattice being moveable from a crimped state to an expanded state, and a plurality of adjacent hoops. Each hoop has a plurality of adjacent loops. Additionally, the stent further includes a plurality of bridges connecting adjacent hoops and a plurality of extensions on the lattice. Each of the hoops and bridges define a cell. The proximal end portion and the distal end portion of the lattice have at least one cell respectively and the middle portion of the lattice has at least one cell. The plurality of extensions are on the middle portion of the lattice. The plurality of extensions are cantilevered projections from the bridges and/or hoops of the lattice. The plurality of extensions are movably deformable in a direction away from the lattice, for example, at least some of the extensions are movably deformable in a direction away from the bridges and at least some of the extensions are movably deformable in a direction away from the hoops.
    • 支架包括限定具有近端部分和远端部分的基本上圆柱形构造的格子,以及近端和远端之间的中间部分。 格子可以从卷曲状态移动到展开状态,并且多个相邻的环。 每个箍具有多个相邻的环。 此外,支架还包括连接相邻环的多个桥和在晶格上的多个延伸部。 每个环和桥定义一个单元格。 晶格的近端部分和远端部分分别具有至少一个电池,并且晶格的中间部分具有至少一个电池。 多个延伸部位于格子的中间部分。 多个延伸部是从网格的桥和/或环的悬臂突起。 所述多个延伸部在远离格子的方向上可移动地变形,例如,至少一些延伸部在远离桥梁的方向上可移动地变形,并且至少一些延伸部分沿着远离网格的方向可移动地变形 箍
    • 2. 发明申请
    • Method for treating a bifurcated vessel
    • 治疗分叉血管的方法
    • US20050131524A1
    • 2005-06-16
    • US10863142
    • 2004-06-08
    • David MajercakMatthew KreverJin ParkRobert BurgermeisterHikmat HojeibaneMartin Leon
    • David MajercakMatthew KreverJin ParkRobert BurgermeisterHikmat HojeibaneMartin Leon
    • A61M29/02A61F2/06A61F2/84A61F2/90
    • A61F2/91A61F2/915A61F2002/91541A61F2002/91558A61F2230/0054
    • A method for treating a bifurcated vessel, wherein the bifurcated vessel has a main vessel and a side branch vessel extending from the main vessel. The method includes the steps of: identifying a site in the main vessel and placing a stent at the site in the main vessel. The stent includes a lattice defining a substantially cylindrical configuration having a proximal end portion and a distal end portion, and a middle portion between the proximal end portion and the distal end portion. The lattice is movable from a crimped state to an expanded state. The lattice has a plurality of adjacent hoops. Each hoop has a plurality of adjacent loops, a plurality of bridges connecting adjacent hoops, and a plurality of extensions on at least some portions of the lattice. Each of the hoops and bridges define a cell. The proximal end portion and the distal end portion of the lattice have at least one cell respectively and the middle portion of the lattice has at least one cell. The at least one cell of the middle portion has spacing between adjacent hoops that is greater than spacing between adjacent hoops of the at least one cell of the proximal end portion and the distal end portion respectively. The at least one cell of the middle portion is dilated adjacent the side branch vessel and a surface of the side branch vessel is supported with at least one of the plurality of the extensions by deformably moving the at least one of the plurality of extensions away from the lattice and into contact with the surface of the side branch vessel.
    • 一种治疗分叉血管的方法,其中分叉血管具有主血管和从主血管延伸的侧支血管。 该方法包括以下步骤:识别主容器中的位置并将支架放置在主容器中的位置处。 支架包括限定具有近端部分和远端部分的基本上圆柱形构造的格子,以及近端部分和远端部分之间的中间部分。 格子可以从卷曲状态移动到展开状态。 格子具有多个相邻的箍。 每个箍具有多个相邻的环,连接相邻环的多个桥,以及在该格的至少某些部分上的多个延伸部。 每个环和桥定义一个单元格。 晶格的近端部分和远端部分分别具有至少一个电池,并且晶格的中间部分具有至少一个电池。 中间部分的至少一个单元在相邻的箍之间具有分别大于近端部分的至少一个单元和远端部分的相邻环之间的间隔的间隔。 中间部分的至少一个单元在侧分支容器附近扩张,并且侧分支容器的表面由多个延伸部中的至少一个支撑,多个延伸部中的至少一个延伸部可变形地将多个延伸部中的至少一个远离 格子并与侧支血管的表面接触。
    • 7. 发明申请
    • Method to develop an organized microstructure within an implantable medical device
    • 在可植入医疗装置内开发有组织的微结构的方法
    • US20070151638A1
    • 2007-07-05
    • US11321547
    • 2005-12-29
    • Robert BurgermeisterRandy-David GrishaberJin Park
    • Robert BurgermeisterRandy-David GrishaberJin Park
    • C21D6/00C22F1/00
    • A61L27/50A61L2400/18
    • A method to facilitate the ability to engineer an organized microstructure within a monolithically homogeneous implantable biomaterial, particularly metallic alloys, is provided. By starting with an ultra-fine grained, equiaxed microstructure having an averaged linear grain size of less than 5 microns, a functionally graded microstructure is developed by establishing a temperature gradient across the cross sectional dimension. In the case of a tubular product form, this dimension would be framed by the outer and inner surfaces. By ensuring one surface is held at a substantially lower temperature than the other surface a temperature gradient is developed. The present invention also provides an implantable medical device which includes an organized microstructure. In accordance with the present invention, the organized microstructure includes a first surface region having said ultra-fine grained, equiaxed microstructure and a second surface region comprising a recrystallized, coarser grained microstructure having an average linear grain size of greater than 25 microns, wherein the first and second surface regions are separated by a transition region.
    • 提供了一种有助于在单一均匀的可植入生物材料,特别是金属合金中设计有组织的微结构的能力的方法。 通过从具有小于5微米的平均线性晶粒尺寸的超细晶粒等轴显微组织开始,通过在横截面尺寸上建立温度梯度来开发功能梯度的微结构。 在管状产品形式的情况下,该尺寸将由外表面和内表面构成。 通过确保一个表面保持在比另一个表面基本上更低的温度,开发温度梯度。 本发明还提供了一种包括有组织的微结构的可植入医疗装置。 根据本发明,有组织的微结构包括具有所述超细晶粒等轴显微组织的第一表面区域和包含平均线性晶粒尺寸大于25微米的再结晶,粗晶粒微结构的第二表面区域,其中, 第一和第二表面区域被过渡区域分开。