Method of manufacturing syringes and other devices
    2.
    发明授权
    Method of manufacturing syringes and other devices 有权
    制造注射器等设备的方法

    公开(公告)号:US08747726B2

    公开(公告)日:2014-06-10

    申请号:US12794920

    申请日:2010-06-07

    IPC分类号: B29C49/06 B29C49/12

    摘要: A syringe for use in a pressurized injection of a fluid includes a syringe barrel including a polymeric material having undergone expansion via blow molding. An inner diameter of the syringe barrel can, for example, be sufficiently constant (over at least a portion of the axial length of the syringe) that a plunger slidably positioned within the syringe barrel and in generally sealing contact with an inner wall of the syringe barrel can be used within the syringe barrel to generate a pressure of at least 1 psi within the syringe barrel. In several embodiment, the inner diameter of the syringe barrel is sufficiently constant to generate a pressure of at least 100 psi, at least 300 psi, or even at least 500 psi within the syringe barrel. A method of forming a syringe includes the steps of: injection molding at least one polymeric material to form a preform; placing the preform into an blow mold die; and expanding at least a portion of the preform while heating the preform within the die to form a barrel of the syringe. The syringes can be formed to withstand relatively high pressures as described above. The at least one polymeric material can, for example, be polyethyleneterephthalate, cyclic olefin polymer, polypropylene, polystyrene, polyvinylidene chloride, polyethylene napthalate and/or nylon.

    摘要翻译: 用于加压注射流体的注射器包括注射器筒,其包括通过吹塑成型而经历膨胀的聚合材料。 注射器筒的内径可以例如足够恒定(在注射器的轴向长度的至少一部分上),柱塞可滑动地定位在注射器筒内并且与注射器的内壁大致密封接触 枪管可以在注射器筒内使用,以在注射器筒内产生至少1psi的压力。 在几个实施例中,注射器筒的内径足够恒定,以在注射器筒内产生至少100psi,至少300psi,或甚至至少500psi的压力。 形成注射器的方法包括以下步骤:注射成型至少一种聚合物材料以形成预制件; 将预成型件放置在吹塑模具中; 以及在所述模具内加热所述预制件以形成所述注射器的筒体的同时扩展所述预制件的至少一部分。 注射器可以形成为承受如上所述的相对较高的压力。 所述至少一种聚合物材料可以是例如聚对苯二甲酸乙二醇酯,环烯烃聚合物,聚丙烯,聚苯乙烯,聚偏二氯乙烯,聚萘二甲酸乙二醇酯和/或尼龙。