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    • 2. 发明申请
    • COATED IMPLANTABLE MEDICAL DEVICE
    • 涂层可植入医疗器械
    • WO2003026718A1
    • 2003-04-03
    • PCT/US2001/045577
    • 2001-10-31
    • COOK INCORPORATEDMED INSTITUTE, INC.
    • RAGHEB, Anthony, O.BATES, Brian, L.STEWART, Joseph, M., IVBOURDEAU, William, J.CHOULES, Brian, D.PURDY, James, D.FEARNOT, Neal, E.
    • A61L31/16
    • A61L27/54A61F2/86A61F2250/0067A61L31/16A61L2300/252A61L2300/414A61L2300/606
    • A medical device (10) includes a structure (12) adapted for introduction into a patient, the structure (12) being formed of a preferably non-porous base material (14) having a roughened or textured surface (16). The structure (12) is conveniently configured as a vascular stent with a base material (14) of stainless steel, nitinol or another suitable material. The medical device (10) also includes a layer (18) of a bioactive material posited directly upon the roughened or textured surface (16) of the base material (14) of the structure (12). The surface (16) of the base material (14) is roughened or textured by etching or by abrasion with sodium bicarbonate or another suitable grit. A preferred roughened or textured surface (16) is thought to have a mean surface roughness of about 10 μin. (about 250 nm) and a surface roughness range between about 1/μin. and about 100 μin. (about 25 nm and about 2.5 μm). The particularly preferred use of sodium bicarbonate as the abrasive to provide roughness or texture to the surface (16) of the base material (14) of the structure (12) is additionally advantageous in the low toxicity of the sodium bicarbonate to production workers, the ease of product and waste cleanup, and the biocompatibility of any residual sodium bicarbonate.
    • 医疗装置(10)包括适于引入患者的结构(12),所述结构(12)由具有粗糙或纹理表面(16)的优选无孔基材(14)形成。 结构(12)方便地构造为具有不锈钢,镍钛诺或其它合适材料的基础材料(14)的血管支架。 医疗装置(10)还包括直接位于结构(12)的基底材料(14)的粗糙或纹理表面(16)上的生物活性材料层(18)。 基体材料(14)的表面(16)通过蚀刻或用碳酸氢钠或另一种适当的砂粒磨损而粗糙化或纹理化。 认为优选的粗糙化或纹理表面(16)具有约10微米(约250nm)的平均表面粗糙度和约1 /μm至约100微米(约25nm) 约2.5亩)。 特别优选使用碳酸氢钠作为研磨剂以对结构(12)的基础材料(14)的表面(16)提供粗糙度或织构,另外在碳酸氢钠对生产工人的低毒性方面也是有利的, 易于产品和废物清理,以及任何残留碳酸氢钠的生物相容性。
    • 3. 发明申请
    • UNIDIRECTIONAL DELIVERY SYSTEM
    • UNIDIRECTIONAL交付系统
    • WO2006071915A2
    • 2006-07-06
    • PCT/US2005/047184
    • 2005-12-27
    • COOK INCORPORATED
    • BAKER, Deborah, A.PURDY, James, D.PARKER, Fred, T.
    • A61F2/84
    • A61F2/966A61F2/95A61F2002/9517
    • A tubular prosthesis delivery system (20) has an inner tubular member (24) having a distal end (26) including a prosthesis-carrying portion (28) and a proximal end (30) generally intended to remain outside the patient. An outer tubular member (32) has a distal end (34) spaced from the prosthesis-carrying portion (28) of the inner member (24). A coupling member (36) couples the inner and outer tubular members (24, 32) to each other in fixed relationship generally at a location intended to remain outside the patient. An intermediate tubular member (38) located between the inner and outer tubular members has a distal end (40) adapted to cover the tubular prosthesis (22) and a proximal end (42) that projects proximally beyond the proximal ends (30, 44) of both the inner and outer tubular members (24, 32), and a slot (46) receiving the coupling member (36). The proximally projecting end (42) of the intermediate tubular member (38) is longitudinally movable with respect to the coupled inner and outer tubular members (24, 32) by a distance sufficient to retract the intermediate tubular member distal end (34) from any position covering the prosthesis (22) carried by the inner member (24).
    • 管状假体递送系统(20)具有内部管状构件(24),所述内部管状构件(24)具有包括假体承载部分(28)的远端(26)和通常旨在保持在患者外部的近端(30)。 外部管状构件(32)具有与内部构件(24)的假体承载部分(28)间隔开的远端(34)。 联接构件(36)以固定关系将内管状构件(24)与外管状构件(32)彼此连接,大致位于旨在保持在患者外部的位置。 位于内管状构件和外管状构件之间的中间管状构件(38)具有适于覆盖管状假体(22)的远端(40)和近端突出超过近端(30,44)的近端(42) 内部和外部管状构件(24,32)两者以及容纳联接构件(36)的槽(46)。 中间管状构件(38)的近端突出的端部(42)可相对于联接的内部和外部管状构件(24,32)纵向移动一定距离,足以将中间管状构件远端(34)从任何 覆盖由内部构件(24)承载的假体(22)的位置。