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    • 2. 发明授权
    • Method of making an expandable fluoropolymer device
    • 制造可膨胀氟聚合物装置的方法
    • US06395208B1
    • 2002-05-28
    • US09410329
    • 1999-10-01
    • Steve A. HerweckPeter H. GingrasPaul MartakosTheodore Karwoski
    • Steve A. HerweckPeter H. GingrasPaul MartakosTheodore Karwoski
    • B29C4904
    • B29C55/24A61L29/041A61M25/10B29C47/00B29C47/0023B29C47/0026B29C2049/465B29K2027/18B29L2022/022B29L2031/753B32B2305/026C08L27/18
    • A method of making a radially expandable device having a body constructed of a generally inelastic, expanded fluoropolymer material. The body is deployable upon application of a radial expansion force from a reduced diameter, collapsed configuration to an expanded configuration having a pre-defined and fixed increased diameter. The body has a singular, unitary construction of generally homogenous material that is characterized by a seamless construction of expanded fluoropolymer material, such as expanded polytetrafluoroethylene (ePTFE), and is preferably constructed through an extrusion and expansion process. The body is further characterized by a microstructure of nodes interconnected by fibrils in which substantially all the nodes of the body are oriented generally perpendicularly to the longitudinal axis of the body. The monolithic construction of the body and the orientation of the nodes, perpendicular to the longitudinal axis of the body, yields a radially expandable device that predictably and dependably expands to a predefined, fixed maximum diameter that is generally independent of the expansion force used to radially expand the device.
    • 一种制造径向可膨胀装置的方法,该装置具有由通常无弹性的膨胀的含氟聚合物材料构成的主体。 当径向膨胀力从减小的直径,收缩构型施加到具有预定义和固定的增大直径的膨胀构型时,主体可展开。 本体具有通常均匀材料的单一,单一结构,其特征在于扩展的氟聚合物材料如膨胀聚四氟乙烯(ePTFE)的无缝构造,并且优选通过挤出和膨胀方法构造。 身体的特征还在于通过原纤维相互连接的节点的微结构,其中主体的基本上所有的节点大致垂直于身体的纵向轴线定向。 身体的整体结构和垂直于身体的纵向轴线的节点的取向产生可预测和可靠地扩展到预定的,固定的最大直径的径向可扩张装置,其通常与用于径向的膨胀力无关 展开设备。
    • 3. 发明授权
    • Expandable fluoropolymer device for delivery of therapeutic agents and method of making
    • 用于递送治疗剂的可扩展含氟聚合物装置和制备方法
    • US06955661B1
    • 2005-10-18
    • US09411797
    • 1999-10-01
    • Steve A. HerweckPeter H. GingrasPaul MartakosTheodore Karwoski
    • Steve A. HerweckPeter H. GingrasPaul MartakosTheodore Karwoski
    • A61F2/958A61L29/04B29C47/00B29C55/24A61M5/00
    • A61M25/1029A61L29/041A61M25/10A61M2025/0057A61M2025/105A61M2025/1075B29C47/00B29C47/0023B29C55/24B29C2049/465B29K2027/18B29L2022/022B29L2031/753B32B2305/026C08L27/18
    • A radially expandable fluid delivery device for delivering a fluid to a treatment site within the body is disclosed. The fluid delivery device is constructed of a microporous, biocompatible fluoropolymer material having a microstructure that can provide a controlled, uniform, low-velocity fluid distribution through the walls of the fluid delivery device to effectively deliver fluid to the treatment site without damaging tissue proximate the walls of the device. The fluid delivery device includes a tubular member defined by a wall having a thickness transverse to the longitudinal axis of the tubular member and extending between an inner and an outer surface. The wall is characterized by a microstructure of nodes interconnected by fibrils. The tubular member is deployable from a first, reduced diameter configuration to a second, increased diameter configuration upon the introduction of a pressurized fluid to the lumen. The tubular member includes at least one microporous portion having a porosity sufficient for the pressurized fluid to permeate through the wall. Substantially all of the nodes within the microporous portion are oriented such that spaces between the nodes form micro-channels extending from the inner surface-to the outer surface of the wall.
    • 公开了一种用于将流体输送到体内的治疗部位的可径向扩张的流体输送装置。 流体输送装置由具有微结构的微孔生物相容性含氟聚合物材料构成,微结构可以通过流体输送装置的壁提供受控的,均匀的低速流体分配,以有效地将流体输送到治疗部位,而不会损伤邻近的 设备的墙壁。 流体输送装置包括由壁限定的管状构件,其具有横向于管状构件的纵向轴线并在内表面和外表面之间延伸的厚度。 壁的特征在于通过纤维互连的节点的微结构。 当将加压流体引入内腔时,管状构件可从第一缩径直径构型展开至第二增大直径构型。 管状构件包括具有足以使加压流体渗透通过壁的孔隙的至少一个微孔部分。 基本上微孔部分内的所有节点被定向成使得节点之间的空间形成从壁的内表面延伸到外表面的微通道。
    • 7. 发明授权
    • Self-forming prosthesis for repair of soft tissue defects
    • 用于修复软组织缺损的自体成形假体
    • US6066776A
    • 2000-05-23
    • US895050
    • 1997-07-16
    • Jonathan L. GoodwinPeter H. GingrasSteve A. Herweck
    • Jonathan L. GoodwinPeter H. GingrasSteve A. Herweck
    • A61F2/00A61F2/02
    • A61F2/0063Y10S623/901
    • A prosthesis is provided that is advantageously used to fill a soft tissue or muscle defect, such as an inquinal or femoral hernia. In a first aspect of the invention, multiple layers of a flexible, mesh material are attach together at a finite number of joins. A tab is placed at the geometric center of one of the mesh layers to facilitate insertion of the mesh into the defect. The tab also creates a blunt tip that reduces irritation and discomfort to the patient. In a second aspect of the invention, a prosthesis is provided that includes a barrier layer between two or more layers of flexible, mesh material to prevent adhesion of the device to the tissue. All layers are attached together by a finite number of joins. A tab is placed at the geometric center of one of the mesh layers to facilitate insertion of the mesh into the defect. The prostheses of the invention are self-forming in that they change from a two dimensional configuration to a three dimensional configuration upon insertion of the device into the defect.
    • 提供了一种假体,其有利地用于填充软组织或肌肉缺损,例如询问或股骨疝。 在本发明的第一方面中,柔性网状材料的多层以有限数量的连接连接在一起。 在一个网格层的几何中心处放置一个突片,以便于将网格插入到缺陷中。 该标签还创建一个钝头,减少患者的刺激和不适。 在本发明的第二方面中,提供一种假体,其包括两层或多层柔性网状材料之间的阻挡层,以防止该装置粘附到组织上。 所有层通过有限数量的连接连接在一起。 在一个网格层的几何中心处放置一个突片,以便于将网格插入到缺陷中。 本发明的假体是自形成的,因为它们在将装置插入缺陷时从二维构型变为三维构型。
    • 9. 发明授权
    • Covered stent and method of covering a stent
    • 覆盖支架和覆盖支架的方法
    • US06808533B1
    • 2004-10-26
    • US09627566
    • 2000-07-28
    • Jonathan L. GoodwinGary A. JordanPeter H. Gingras
    • Jonathan L. GoodwinGary A. JordanPeter H. Gingras
    • A61F206
    • A61F2/86A61F2/91A61F2002/072A61F2210/0076A61F2220/005A61L31/10A61L31/146C08L27/18
    • A radially deployable covered stent that predictably and dependably expands to an increased diameter state at relatively low deployment pressures while concomitantly minimizing the risk of tearing of the stent covering during expansion. The stent covering includes an inner cover and an outer cover that are bonded together through and around the stent structure to cover the stent. The stent cover is constructed from expanded polytetrafluoroethylene (ePTFE) having a structure of nodes interconnected by fibrils. The stent covering has a radial thickness of at least about 0.008″ and an average internodal distance (IND) of at least about 100 microns when the stent is in the reduced diameter, unexpanded state. The covered stent deploys at an average deployment pressure of less than or equal to about 10 atm. A method for covering a stent structure according to the present invention includes placing a compression member in the form of a tubular sleeve over the outer cover and heating the compressed covered stent to bond the inner cover to the outer cover. An adhesive in the form of an aqueous dispersion of PTFE can be applied to either the inner cover or the outer cover to facilitate bonding of the inner cover to the outer cover.
    • 可径向展开的覆盖支架可预测地且可靠地在相对较低的部署压力下扩张到增加的直径状态,同时最小化扩张期间支架覆盖物撕裂的风险。 支架覆盖物包括通过支架结构并且围绕支架结构粘合在一起以覆盖支架的内盖和外盖。 支架盖由膨胀的聚四氟乙烯(ePTFE)构成,其具有通过纤维互连的节点结构。 当支架处于减小直径,未膨胀状态时,支架覆盖物具有至少约0.008“的径向厚度和至少约100微米的平均间隔距离(IND)。 覆盖的支架以小于或等于约10atm的平均部署压力部署。 根据本发明的覆盖支架结构的方法包括将管状套筒形式的压缩构件放置在外盖上并加热压缩的被覆盖的支架以将内盖结合到外盖。 可以将PTFE的水性分散体形式的粘合剂施加到内盖或外盖上,以便于内盖与外盖接合。