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    • 2. 发明申请
    • PROCESS FOR HYDROPHILICIZATION OF HYDROPHOBIC POLYMERS
    • 疏水聚合物的疏水化方法
    • WO1996023834A1
    • 1996-08-08
    • PCT/IB1996000034
    • 1996-01-15
    • SCHNEIDER (USA) INC.
    • SCHNEIDER (USA) INC.HELMUS, Michael, N.HOSTETTLER, FritzDING, Ni
    • C08J07/04
    • C08J7/123C08J7/04C08J7/047C08J7/12C08J2315/00C08J2475/00
    • A process for rendering the surfaces of polymeric plastic or rubber materials, which are intrinsically non-polar or only slightly polar, and hydrophobic, polar or more polar, and hydrophilic, so that amine-containing functional groups, and ultimately, a durable tenaciously adhering, slippery polyurethane or polyurethane-urea hydrogel coating may subsequently be applied to the polymer surface, is disclosed. The process involves dual plasma-treatment of a polymeric plastic or rubber substrate material; the first treatment being with an oxygen-containing plasma gas, to affix hydroxyl, carboxyl and carbonyl groups to the substrate surface, thereby rendering the surface more polar and activated; and the second treatment being with a nitrogen-containing plasma gas, to affix amine and amino groups to the substrate surface to make it more hydrophilic and reactive toward terminal isocyanate groups of a polyurethane or polyurethane/urea prepolymer adduct intermediate tie-coat which is subsequently applied to the substrate surface and then converted to a tenaciously adhering, slippery hydrogel coating. The process is especially suited to the hydrophilicization of intrinsically non-polar and hydrophobic polymeric plastic materials, such as polyethylenes, nylons-11 and nylons-12.
    • 使本体非极性或仅极微小的聚合物塑料或橡胶材料表面的方法,以及疏水,极性或更极性和亲水性的方法,使得含胺官能团,最终持久坚固地粘附 ,可以随后将光滑的聚氨酯或聚氨酯 - 尿素水凝胶涂层施加到聚合物表面。 该方法涉及聚合物塑料或橡胶基材材料的双等离子体处理; 用含氧等离子体气体进行第一次处理,将羟基,羧基和羰基粘合到基材表面,从而使表面更加极性和活化; 并且第二次处理是用含氮等离子体气体,以将胺和氨基固定在基材表面上,使其对聚氨酯或聚氨酯/脲预聚物加合物中间粘结层的末端异氰酸酯基团更亲水并具有反应性 施加到基材表面,然后转化成坚固粘附,滑滑的水凝胶涂层。 该方法特别适用于本征非极性和疏水性聚合物塑料材料如聚乙烯,尼龙-11和尼龙-12的亲水化。
    • 5. 发明申请
    • TRACKING GUIDEWIRE
    • 跟踪指南
    • WO1991019528A1
    • 1991-12-26
    • PCT/US1991003509
    • 1991-05-17
    • SCHNEIDER (USA) INC.
    • SCHNEIDER (USA) INC.SHOCKEY, Rick, L.
    • A61M29/00
    • A61M25/09025A61B2017/22042A61B2017/22044A61M29/00A61M2025/09175
    • A guidewire and guidewire assembly (10) for placement within a blood vessel for penetrating an occlusion therein. The guidewire comprises a length of flexible wire (12) having a concentric lumen (14) running its entire length and a distal end portion (20) having an arcuate tip (22) and a diameter greater than that of the wire immediately proximal thereto. The guidewire assembly comprises the guidewire described along with a flexible stylet (32) substantially the same length as the flexible wire and disposed within the lumen of the wire. In operation, the distal end portion is positioned in the blood vessel against an occlusion, and a dottering action is thereafter provided whereby the distal end portion repeatedly impinges on the occlusion until penetration of the occlusion occurs.
    • 导线和导丝组件(10),用于放置在血管内用于穿透其中的闭塞。 所述导丝包括具有延伸其整个长度的同心内腔(14)的长度的柔性线(12),以及具有弓形尖端(22)并且直径大于紧邻其上的线的直径的远端部分(20)。 导丝组件包括与柔性探针(32)一起描述的导丝,该柔性探针(32)与柔性线基本上具有相同的长度并且设置在线的内腔中。 在操作中,远端部分位于血管中以抵抗闭塞,此后提供点动作用,由此远端部分重复地撞击阻塞,直到发生闭塞渗透。
    • 8. 发明申请
    • SURGICAL DEPTH MEASURING INSTRUMENT AND METHOD
    • 手术深度测量仪器和方法
    • WO1994016637A1
    • 1994-08-04
    • PCT/US1993011645
    • 1993-12-07
    • SCHNEIDER (USA) INC.
    • SCHNEIDER (USA) INC.MAKOWER, JoshuaTHATCHER, Robert, J.VAN TASSEL, Robert, A.
    • A61B19/00
    • A61M25/06A61B2090/062
    • A device for measuring the depth below skin level of a blood vessel that has been punctured in the course of a catheterization or other interventional vascular procedure comprises a tubular member (18) having a proximal end (20) and a distal end (22) portion that is preferably tapered to a small outer diameter. The lumen (24, 26) may have a stepped diameter extending between the proximal and distal ends (20, 22). A first portion of the lumen (26) is distally located and is of a diameter generally equal to the diameter of a guidewire with which the measuring device is used. The second segment of the lumen (24) is of a substantially larger diameter. A side entry port (32) is made through the wall of the tubular member (18) at the distal base of the larger diameter section of the lumen (24). Graduated markings on the side wall of the tubular member (18) extend from the side entry port (32) toward the proximal end (20) of the instrument. When the instrument is fed over a guidewire into a puncture wound formed through the skin and into an artery, the wall of the artery can be accurately located relative to the skin's surface by noting the graduated markings on the exterior of the tube (18) at the point where blood flow enters the side entry port (32) and fills the larger diameter lumen (24). Rather than having two coaxially disposed lumens as above, the tubular member may have a double lumen (32, 40), one extending the entire length for accommodating the guidewire and the other extending between the tube's proximal end and the side entry port (42).
    • 用于测量在导管插入术或其它介入血管手术过程中被刺穿的血管皮肤水平以下深度的装置包括具有近端(20)和远端(22)部分的管状构件(18) 优选地锥形到小的外径。 内腔(24,26)可以具有在近端和远端(20,22)之间延伸的阶梯直径。 管腔(26)的第一部分在远侧位置并且其直径大致等于使用测量装置的导丝的直径。 管腔(24)的第二段具有基本上更大的直径。 在入口(24)的较大直径部分的远端基部处,通过管状构件(18)的壁制成侧入口(32)。 管状构件(18)的侧壁上的刻度标记从侧入口(32)朝向仪器的近端(20)延伸。 当仪器通过导丝进入通过皮肤形成的穿刺伤口并进入动脉时,可以通过在管(18)的外部注意分级标记,使动脉壁相对于皮肤表面精确定位 血流进入侧入口(32)并填充较大直径的腔(24)的点。 不管如上所述具有两个同轴布置的腔,管状构件可以具有双腔(32,40),一个延伸整个长度以容纳导丝,另一个在管的近端和侧入口(42)之间延伸, 。
    • 9. 发明申请
    • TRACKING GUIDEWIRE
    • 跟踪指南
    • WO1994013350A1
    • 1994-06-23
    • PCT/US1993011794
    • 1993-12-10
    • SCHNEIDER (USA) INC.
    • SCHNEIDER (USA) INC.SHOCKEY, Rick, L.VANCE, Jeffrey, D.
    • A61M25/01
    • A61M29/00A61B2017/22042A61B2017/22044A61M25/09025A61M2025/09175
    • A guidewire (10) for placement within a blood vessel for penetrating an occlusion therein. The guidewire (1) comprises a length of flexible wire (12) having a lumen extending therethrough. The distal end of the guidewire (10) is generally arcuate and has a diameter greater than that of the wire (12) immediately proximal thereto. A flexible stylet (32) substantially the same length as the flexible wire (12) may be disposed within the lumen of the wire (12). The stylet (32) and the guidewire (10) have locking means (19, 18), such as Luer locking threads. In operation, the arcuate distal end of the guidewire (10) is positioned in the blood vessel against an occlusion, and a dottering action is thereafter provided whereby the arcuate distal end of the guidewire (10) repeatedly impinges on the occlusion until penetration of the occlusion occurs.
    • 一种用于放置在血管内用于穿透其中的闭塞的导丝(10)。 导丝(1)包括具有延伸穿过其中的内腔的一段柔性线(12)。 导丝(10)的远端大体上是弓形的,其直径大于紧靠其上的线(12)的直径。 与软线(12)基本上相同长度的柔性探针(32)可设置在线(12)的内腔内。 探针(32)和导丝(10)具有锁定装置(19,18),例如Luer锁定螺纹。 在操作中,导线(10)的弓形远端位于血管中以抵抗闭塞,此后提供点状作用,由此导线(10)的弓形远端重复地撞击闭塞,直到穿透 发生闭塞。
    • 10. 发明申请
    • ESOPHAGEAL STENT AND DELIVERY TOOL
    • 食管和交付工具
    • WO1993022986A1
    • 1993-11-25
    • PCT/US1993001966
    • 1993-03-10
    • SCHNEIDER (USA) INC.
    • SCHNEIDER (USA) INC.JOHNSON, Liann, M.THOMPSON, Richard, J.SCHOLL, John, A.
    • A61F02/06
    • A61F2/90A61F2/0077A61F2/07A61F2/852A61F2/95A61F2/966A61F2002/072A61F2002/821A61F2002/9517A61F2002/9534A61F2002/9665A61F2210/0076A61F2220/0033A61F2220/005A61F2230/0054A61F2230/0078A61F2250/0063A61F2250/0097A61M2025/0008
    • A radially self-expanding stent (90) particularly suited for treating esophageal strictures, includes a medial region (92) and proximal and distal cuffs (94, 96) having diameters greater than the medial region (92) diameter when the stent (90) is in the relaxed state. A silicone coating circumscribes the medial region (92), but the cuffs (94, 96) are not coated and retain their open weave construction. As a result, the cuffs (94, 96) remain particularly well suited to immediately contact esophageal wall tissue and resist stent migration, while the silicone coated medial region (92) provides a barrier to tumor ingrowth, and has an enhanced radial restoring force to maintain an open passageway in the esophagus. A deployment device (16) for the stent (90) includes an interior catheter (26) surrounded by the stent (90) and having an esophageal dilation feature (28), along with an exterior catheter (18) that radially compresses the stent (90). A low durometer sleeve (54), fixed to the interior tube (26) and in surface engagement with the compressed stent (90), tends to fix the axial position of the stent (90) relative to the interior catheter (26) whenever the exterior catheter (18) is moved axially relative to the inner catheter (26). Consequently, precision in stent placement and the ability to recapture a partially deployed stent are enhanced.
    • 特别适用于治疗食管狭窄的径向自扩张支架(90)包括当支架(90)具有直径大于中间区域(92)直径的直径的中间区域(92)和近端和远端袖带(94,96) 处于放松状态。 硅胶涂层限定了中间区域(92),但是袖口(94,96)没有涂覆并保持其开放的编织结构。 结果,袖带(94,96)特别适合于立即接触食管壁组织并抵抗支架移动,而硅氧烷涂覆的内侧区域(92)为肿瘤向内生长提供屏障,并具有增强的径向恢复力 在食管中保持开放的通道。 用于支架(90)的展开装置(16)包括由支架(90)包围并具有食管扩张特征(28)的内部导管(26),以及径向压缩支架的外部导管(18) 90)。 固定到内管(26)并与压缩支架(90)表面接合的低硬度套筒(54)倾向于相对于内导管(26)固定支架(90)的轴向位置,只要 外导管(18)相对于内导管(26)轴向移动。 因此,增强了支架放置的精度和再次部分展开的支架的能力。