会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明授权
    • Flexible, highly radiopaque plastic material catheter
    • 灵活,高度不透射线的塑料导管
    • US5300048A
    • 1994-04-05
    • US60746
    • 1993-05-12
    • David A. Drewes, Jr.Fred T. Parker
    • David A. Drewes, Jr.Fred T. Parker
    • A61B6/12A61L29/00A61M25/00A61M25/01
    • A61M25/0108A61M2025/0163
    • A flexible plastic material catheter having a distal tubular member portion with a greater than 75 weight percent loading of a radiopaque agent for radiographic viewing. The catheter comprises an elongated member having a proximal portion and a distal end portion with a flexible, radiopaque plastic material having a durometer lower than that of the proximal portion. The plastic material of the distal end portion comprises a homogeneous and evenly dispersed composition of a 20 weight percent base thermoplastic, elastomer material such as a polyether block amide and 80 weight percent loading of a radiopaque agent such as tungsten. This distal end portion plastic material exhibits a durometer of approximately 47 on the Shore D scale, whereas the polyether block amide material exhibits a durometer of approximately 40 on the Shore D scale. The flex modulus of the polyether block amide material is in a range of 23,000 to 75,000 pounds per square inch. The proximal end portion comprises a base thermoplastic material such as a polyamide elastomer material and a radiopaque agent of bismuth oxychloride.
    • 一种柔性塑料材料导管,其具有远端管状部件,其具有大于75重量%的用于放射照相观察的不透射线剂的负载。 导管包括细长构件,其具有近端部分和远端部分,该远端部分具有柔性的不透射线的塑料材料,该塑料材料的硬度低于近端部分的硬​​度。 远端部分的塑料材料包括均匀和均匀分散的20重量%的基础热塑性弹性体材料如聚醚嵌段酰胺和80重量%的不透射线剂如钨的负载的组合物。 该远端部分塑料材料在肖氏D刻度上表现出大约47的硬度,而聚醚嵌段酰胺材料在肖氏D刻度表现出大约40的硬度。 聚醚嵌段酰胺材料的挠曲模量在23,000至75,000磅/平方英寸的范围内。 近端部分包括诸如聚酰胺弹性体材料的基底热塑性材料和氯氧化铋的不透射线剂。
    • 4. 发明申请
    • LARGE DIAMETER DELIVERY CATHETER/SHEATH
    • 大直径输送管/管
    • US20100163159A1
    • 2010-07-01
    • US12719228
    • 2010-03-08
    • Jay A. DittmanDavid A. Drewes, JR.
    • Jay A. DittmanDavid A. Drewes, JR.
    • B29C53/60
    • A61M25/0012A61M25/0045A61M25/005A61M25/0053A61M25/0108A61M25/0662A61M2025/0047A61M2025/0059
    • A large diameter, flexible, kink-resistant, delivery catheter or sheath for percutaneous delivery of a contained and implantable medical device in the vasculature of a patient. The delivery catheter or sheath includes a reinforcement such as a flat wire coil with uniform spacing between the turns, which is compression fitted about an inner, lubricous PTFE tube. The delivery catheter or sheath further includes an outer tube of a heat formable polyamide material which is heat formed and compressed through the spaces between the turns of the wire coil to mechanically connect to a roughened outer surface of the inner tube. A polymeric radiopaque marker tube may be positioned at the distal end of the coil and between the inner and outer tubes for radiographic visualization. A side port may also be positioned thereat for the infusion of contrast media.
    • 大直径,柔性,扭结的输送导管或护套,用于经皮递送患者脉管系统中的容纳和可植入的医疗装置。 输送导管或护套包括一个加强件,例如扁平线圈之间,在匝之间具有均匀的间隔,其被压配合在内部的,润滑的PTFE管周围。 递送导管或护套还包括可热成型的聚酰胺材料的外管,其通过线圈的匝之间的空间热形成和压缩,以机械地连接到内管的粗糙的外表面。 聚合物不透射线标记管可以定位在线圈的远端处,并且位于内管和外管之间用于放射照相可视化。 侧端口也可以放置在其中用于输注造影剂。
    • 5. 发明授权
    • Large diameter delivery catheter/sheath
    • 大直径输送导管/护套
    • US07704245B2
    • 2010-04-27
    • US10823176
    • 2004-04-13
    • Jay A. DittmanDavid A. Drewes, Jr.
    • Jay A. DittmanDavid A. Drewes, Jr.
    • A61M25/00
    • A61M25/0012A61M25/0045A61M25/005A61M25/0053A61M25/0108A61M25/0662A61M2025/0047A61M2025/0059
    • A large diameter delivery catheter or sheath for percutaneous delivery of a contained and implantable medical device in the vasculature of a patient. The delivery catheter or sheath includes a reinforcement such as a flat wire coil with uniform spacing between the turns. The reinforcement is compression fitted about an inner, lubricous PTFE tube having a substantially uniform inner diameter of from 16 to 30 French. The delivery catheter or sheath further includes an outer tube of a heat formable polyamide material having a durometer of about 30 to 60 on the Shore D scale. The outer tube is heat formed and compressed through the spaces between the turns of the wire coil to mechanically connect to a roughened outer surface of the inner tube. A polymeric radiopaque marker tube may be positioned at the distal end of the coil and between the inner and outer tubes for radiographic visualization.
    • 用于在患者的脉管系统中经皮递送包含和可植入的医疗装置的大直径输送导管或护套。 递送导管或护套包括一个加强件,例如在匝之间具有均匀间隔的扁线线圈。 加强件压缩安装在具有16至30法国的基本上均匀的内径的内部润滑PTFE管周围。 递送导管或护套还包括在肖氏D刻度上具有约30至60的硬度的可热成型聚酰胺材料的外管。 外管通过线圈的匝之间的空间热成形和压缩,以机械地连接到内管的粗糙的外表面。 聚合物不透射线标记管可以定位在线圈的远端处,并且位于内管和外管之间用于放射照相可视化。
    • 7. 发明授权
    • Catheter with non-uniform wall thickness
    • 导尿管壁厚不均匀
    • US07879021B2
    • 2011-02-01
    • US12005192
    • 2007-12-26
    • David A. Drewes, Jr.
    • David A. Drewes, Jr.
    • A61M25/00
    • A61M25/0043A61M25/0032A61M25/0054
    • A catheter having a non uniform wall thickness comprising first and second wall regions is described. The first region is thicker than the second region and at least a part of the first region comprises a material having a lower stiffness modulus than the second region. Typically, the ratio of stiffness between the first region and the second region is less than 1.25:1 and preferably approximately 1:1. The first region may comprise the same material as the second region but having a different formulation so that the stiffness modulus is altered. Alternatively, the regions may comprise different materials. The lower modulus material is coextruded into at least a part of the broadest/thicker cross sectional region(s).
    • 描述了具有包括第一和第二壁区域的非均匀壁厚的导管。 第一区域比第二区域厚,并且第一区域的至少一部分包括具有比第二区域更低的刚度模量的材料。 通常,第一区域和第二区域之间的刚度比小于1.25:1,优选地为约1:1。 第一区域可以包括与第二区域相同的材料,但是具有不同的配方,使得刚度模量被改变。 或者,区域可以包括不同的材料。 较低模量的材料被共挤出到最宽/较厚的横截面区域的至少一部分中。
    • 8. 发明授权
    • Balloon catheter having improved balloon folding capability
    • 球囊导管具有改善的球囊折叠能力
    • US07857786B2
    • 2010-12-28
    • US11926767
    • 2007-10-29
    • David G. BurtonDavid A. Drewes, Jr.Eric R. HennessyDarin G. Schaeffer
    • David G. BurtonDavid A. Drewes, Jr.Eric R. HennessyDarin G. Schaeffer
    • A61M31/00
    • A61M25/10A61M25/1038A61M2025/1004
    • The present invention provides apparatus and methods for facilitating folding of a balloon before, during or after a medical procedure. In a first embodiment, the apparatus generally comprises at least one catheter shaft member, a balloon disposed on a distal region of the catheter shaft member, and at least one folding member disposed along at least a proximal region of the balloon. The folding member may comprise at least one radially-outward projecting member integrally formed with or attached to the balloon, or an internally-formed groove in the balloon, which is adapted to promote twisting of the balloon to reduce the profile of the balloon in the deflated state. Optionally, biasing members may be disposed between the folding member and an adjacent portion of the balloon to promote folding of the balloon in a clockwise or counter-clockwise direction.
    • 本发明提供了用于在医疗过程之前,期间或之后便于折叠气囊的装置和方法。 在第一实施例中,该装置通常包括至少一个导管轴构件,设置在导管轴构件的远侧区域上的气囊,以及沿气囊的至少近侧区域设置的至少一个折叠构件。 折叠构件可以包括与球囊一体地形成或附接到球囊上的至少一个径向向外突出的构件,或者球囊中的内部形成的凹槽,其适于促进气球的扭转,以减小球囊的轮廓 放气状态 可选地,偏压构件可以设置在折叠构件和球囊的相邻部分之间,以促进气囊沿顺时针或逆时针方向的折叠。
    • 10. 发明授权
    • Medical device including improved expandable balloon
    • 医疗装置包括改进的可膨胀气囊
    • US07485250B2
    • 2009-02-03
    • US10463749
    • 2003-06-16
    • Scott E. BoatmanDavid G. BurtonMichael C. HoffaDavid R. LessardDavid A. Drewes, Jr.Maggie A. Z. Hupcey
    • Scott E. BoatmanDavid G. BurtonMichael C. HoffaDavid R. LessardDavid A. Drewes, Jr.Maggie A. Z. Hupcey
    • B29C35/08D01F1/02A61M29/00
    • C08G69/48A61L29/06C08F283/04C08L77/00C08F218/16
    • A medical device (10) includes a catheter shaft (11) including inner and outer catheter shafts (12 and 14), and an expandable balloon (18) carried by the catheter shaft (11). The balloon (18) is made from an irradiation cross-linked mixture of a polyamide elastomer and at least one additional cross-linking reactant. The polyamide elastomer can be a polyester amide, a polyether ester amide or a polyether amide, and is preferably a nylon block copolymer. The cross-linking reactant can be: (a) a difunctional material, (b) a trifunctional material, (c) a tetrafunctional material, or (d) an aromatic molecule containing at least two ring substituents, each of the ring substituents having labile hydrogens at a benzylic site therein. The cross-linking reactant can also be diallyl phthalate or meta-phenylene dimaleimide. Irradiation is carried out by exposure to an electron beam or to ultraviolet, X- or gamma radiation, preferably at a total fluence of about 0.5 to about 20 megarads. The amount of the cross-linking reactant is selected to avoid the formation of gelling during the process by which the balloon (18) is made, and the amount of the cross-linking agent and the irradiation fluence are selected to give the balloon a strength generally about equal to that which would be obtained by mere irradiation.
    • 医疗装置(10)包括导管轴(11),其包括内导管轴和外导管轴(12和14)和由导管轴(11)承载的可膨胀气囊(18)。 球囊(18)由聚酰胺弹性体和至少一种另外的交联反应物的照射交联混合物制成。 聚酰胺弹性体可以是聚酯酰胺,聚醚酯酰胺或聚醚酰胺,优选为尼龙嵌段共聚物。 交联反应物可以是:(a)双官能材料,(b)三官能材料,(c)四官能材料,或(d)含有至少两个环取代基的芳族分子,每个环取代基具有不稳定性 在其苄基位点处的氢。 交联反应物也可以是邻苯二甲酸二烯丙酯或间亚苯基二马来酰亚胺。 照射通过暴露于电子束或紫外线,X射线或γ射线进行,优选以约0.5至约20兆拉德的总注量。 选择交联反应物的量以避免在制备气囊(18)的过程中形成胶凝,并且选择交联剂的量和照射注量以使球囊具有强度 通常大约等于仅通过照射获得的能量。