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    • 1. 发明授权
    • Catheter with interior balloon
    • 导管与内部气球
    • US5295960A
    • 1994-03-22
    • US861474
    • 1992-04-01
    • Wassim AliahmadSaid S. Hilal
    • Wassim AliahmadSaid S. Hilal
    • A61F2/958A61M25/00A61M29/00
    • A61M25/1027A61M25/10A61M2025/1047A61M2025/1072A61M25/1002
    • A catheter includes a body having tubular walls defining a lumen extending along an axis from the distal end of the body to a proximal end of the body. Portions of the walls define at least one balloon hole extending from the lumen through the walls of the body. Elastomeric material restrained to the hole defining portions interiorly of the body expand outwardly of the (catheter) body to form a balloon when the lumen is pressurized with fluid. The elastomeric material my take the form of a patch or a full lining of the catheter walls defining the lumen. A method for making the catheter includes the step of retaining portions of an elastomeric layer around the hole interiorly of the lumen. A preferred method of manufacturing the catheter includes the step of providing the catheter body and an inner layer of elastomeric sheet material simultaneously in a co-extruder.
    • 导管包括具有管状壁的主体,该管状壁限定沿着从主体的远端到主体的近端的轴线延伸的内腔。 壁的一些部分限定了至少一个气球孔,其从内腔延伸穿过身体的壁。 当管腔被流体加压时,限制在身体内部的孔限定部分的弹性材料向(导管)主体向外扩展以形成球囊。 弹性体材料采用限定内腔的导管壁的贴片或全衬里的形式。 用于制造导管的方法包括将弹性体层的部分保持在腔内部的孔周围的步骤。 制造导管的优选方法包括在共挤出机中同时提供导管体和弹性片材的内层的步骤。
    • 6. 发明授权
    • Pressure gauge for medical applications
    • 医疗用压力表
    • US5000049A
    • 1991-03-19
    • US227580
    • 1988-08-02
    • Robert P. CooperSaid S. Hilal
    • Robert P. CooperSaid S. Hilal
    • A61B5/0215G01L7/08
    • A61B5/0215G01L7/082A61M5/16854
    • An apparatus for measuring fluid pressure in a passage or tube for use with medical apparatus such as balloon catheters. A diaphragm gauge is provided and includes a case which houses a first diaphragm, a translation mechanism connected to the first diaphragm and a pointer attached to the translation mechanism for providing readouts of fluid pressure. The diaphragm is coupled to a fluid passage, such that changes in fluid pressure cause the diaphragm to activate the translation mechanism, thus providing readouts by means of the pointer. A second diaphragm is provided for sealing the fluid passage from the first diaphragm, for preventing transfer of materials between the first diaphragm and the passage. The second diaphragm is of a biocompatible, nonpyrogenic, sterlizable material, such a polyurethane, polyvinylchloride, or polyethylene. Alternatively, a biocompatible, nonpyrogenic coating may be provided on the first diaphragm for sealing it from the fluid passage. In an alternative embodiment, the fluid passage is configured for tightly receiving a catheter, the wall of which contacts the first diaphragm for transmitting pressure due to fluid within the catheter to the first diaphragm. The translation mechanism may be a mechanical lever for converting diaphragm movements to rotational movement of the pointer, or it may be an electronic transducer, in which case the pointer and dial are replaced by an electronically actuable display.
    • 一种用于测量用于医疗设备如球囊导管的通道或管中的流体压力的装置。 提供隔膜计,并且包括容纳第一隔膜的壳体,连接到第一隔膜的平移机构和连接到平移机构的指示器,用于提供流体压力的读数。 隔膜联接到流体通道,使得流体压力的变化导致膜片激活平移机构,从而通过指示器提供读数。 设置第二隔膜用于密封来自第一隔膜的流体通道,以防止材料在第一隔膜和通道之间的转移。 第二隔膜是生物相容性,非致死性,可灭菌的材料,如聚氨酯,聚氯乙烯或聚乙烯。 或者,可以在第一隔膜上提供生物相容的非致热性涂层,以将其与流体通道密封。 在替代实施例中,流体通道构造成用于紧密地接收导管,其导管接触第一隔膜以将导管内的流体的压力传递到第一隔膜。 平移机构可以是用于将膜片运动转换成指针的旋转运动的机械杆,或者它可以是电子换能器,在这种情况下,指针和表盘由电子可启动显示器代替。