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    • 4. 发明授权
    • Medication dispensing balloon catheter
    • 药物分配气囊导管
    • US5389314A
    • 1995-02-14
    • US88327
    • 1993-07-07
    • James C. Wang
    • James C. Wang
    • A61M25/00A61F2/958A61M29/02A61M25/10
    • A61M25/10A61M2025/105
    • An inflatable medical device for the delivery of medications to an organ in the body including a catheter having a plurality of lumens (13, 22, 28) disposed therein. The distal end of the catheter is adapted to be disposed within a bodily organ. A hollow, inflatable, medication-deliverable balloon (16) is disposed on the distal end of the catheter and the interior of the balloon (16) is in fluid flow relationship with one of the lumens (22) to enable the balloon (16) to be inflated. An array of conduits (40) is disposed within the walls of the balloon for the delivery of medications to predetermined locations within said bodily organ. Another lumen (28) in the catheter shaft (14) is provided to deliver medications to the conduits (40) in the wall of the balloon (16). An egress (17) for the medications is provided so that they may be dispensed at the site being treated.
    • 一种用于将药物递送到身体器官的可充气医疗装置,包括具有设置在其中的多个管腔(13,22,28)的导管。 导管的远端适于设置在身体器官内。 中空的,可充气的药物递送气囊(16)设置在导管的远端,并且球囊(16)的内部与腔(22)中的一个流体流动关系,以使球囊(16) 被充气。 一组导管(40)设置在气囊的壁内,用于将药物递送到所述身体器官内的预定位置。 提供导管轴(14)中的另一个腔(28)以将药物递送到球囊(16)的壁中的导管(40)。 提供用于药物的出口(17),使得它们可以在被治疗的部位分配。
    • 5. 发明授权
    • Extrusion die for extrusion blow molding equipment
    • 用于挤出吹塑设备的挤出模具
    • US5156857A
    • 1992-10-20
    • US717162
    • 1991-06-17
    • James C. WangRoger L. KaasThomas T. Tung
    • James C. WangRoger L. KaasThomas T. Tung
    • B29C47/06B29C47/28B29C47/58B29C49/22
    • B29C47/56B29C47/0023B29C47/065B29C47/268B29C47/28B29C49/22B29C47/0026B29C47/26
    • Disclosed are resin stream modulation or shut-off control apparatus for use in a multi-layer extrusion die head for forming a multi-layer plastic resin parison tube suitable for blow-molding. The tube can be formed into articles such as containers. By use of the apparatus, the tube, and accordingly articles therefrom can have layers which vary in thickness or can have portions wherein layers are omitted, e.g., portions which become flash. In an apparatus herein, there is a resin channel having an exit orifice defining a merge area where a first resin stream merges with at least one second resin stream. A die member adjacent to the exit orifice can define the resin channel. Movable means and the die element are caused to intermittently abut or contact one another at the merge area to control, i.e., modulate or shut-off, the flow of the first resin. There is preferably no contact downstream of the merge area. In another embodiment a volumetric increase in the flow of the first resin controls or prevents its flow. Methods are directed to utilizing the apparatus and for forming a container having a scrap layer substantially devoid of one or more selected resins. The multi-layer extrusion blow-molded article or container has a layer which includes scrap from parison sections which are substantially devoid of the selected resin(s).
    • 公开了用于形成适用于吹塑成型的多层塑料树脂型坯管的多层挤出模头中的树脂流调制或切断控制装置。 管可以形成诸如容器的物品。 通过使用该装置,管,并且因此其制品可以具有厚度变化的层或可以具有省略层的部分,例如变成闪光的部分。 在这里的装置中,存在具有限定合并区域的出口孔的树脂通道,其中第一树脂流与至少一个第二树脂流合并。 与出口孔相邻的模具构件可以限定树脂通道。 导致移动装置和模具元件在合并区域间歇地抵靠或接触,以控制,即调节或切断第一树脂的流动。 优选地,在合并区域的下游没有接触。 在另一个实施例中,第一树脂的流动的体积增加控制或防止其流动。 方法涉及利用该装置并形成具有基本上不含一种或多种选择的树脂的废料层的容器。 多层挤出吹塑制品或容器具有包括基本上不含选定树脂的型坯部分的废料的层。