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    • 2. 发明授权
    • Methods and apparatus for ocular iontophoresis
    • 眼用离子电渗法的方法和装置
    • US06319240B1
    • 2001-11-20
    • US09318181
    • 1999-05-25
    • Jon E. Beck
    • Jon E. Beck
    • A61N130
    • A61N1/044A61N1/30A61N1/306
    • An iontophoretic apparatus for ocular iontophoresis comprising a housing element formed to cooperate with the eye. In cooperation with the housing element is a flexible current distribution element that is capable of transmitting electrical current. Coupled to the current distribution element is a conformable medicament containment element that is filled with a medicament which is released under the influence of an electrical current, while a barrier element is provided that is configured to reduce current flow outside of the barrier and aid in the preferential delivery of medicament.
    • 一种用于眼部离子电渗疗法的离子电渗疗法装置,其包括形成为与眼睛配合的壳体元件。 与外壳元件配合是能够传输电流的柔性电流分配元件。 与电流分配元件相耦合的是符合要求的药物容纳元件,其填充有在电流影响下被释放的药物,同时提供了阻挡元件,该阻挡元件被配置为减少屏障外部的电流并帮助 药物优先递送。
    • 3. 发明授权
    • Electrodes for iontophoresis
    • 离子电渗电极
    • US5558632A
    • 1996-09-24
    • US333844
    • 1994-11-03
    • Lindsay B. LloydJon E. BeckTomasz J. PetelenzClay H. HoltWilliam F. Felman
    • Lindsay B. LloydJon E. BeckTomasz J. PetelenzClay H. HoltWilliam F. Felman
    • A61N1/04A61N1/30
    • A61N1/0428A61N1/0436A61N1/044A61N1/0448
    • An improved electrode is disclosed for use in administering drug by means of iontophoresis, comprising a conductive element for receiving an electric current from a current source; a reticulated element having a plurality of reticulum for receiving an ionic drug solution for iontophoretic delivery, the reticulum being loaded or having applied thereto a hydrophilic polymer which is viscous when hydrated; and means for securing the reticulated element to the conductive element so that electric current will be distributed substantially uniformly through the reticulated element when hydrated and when current is delivered to the conductive element. The presently preferred embodiment utilizes open cell polyurethane foam as the reticulated element and high molecular weight polyethylene oxide as the hydrophilic polymer. The reticulum is further loaded with Tween 20, a surfactant, which serves to improve the rate of hydration. A reticulated element formed in accordance with the present invention is pliable and conformable both when in wet or dry state, making an electrode formed in accordance with the present invention susceptible of a wide variety of shapes and sizes and relatively easy to manufacture at reasonably low cost.
    • 公开了一种用于通过离子电渗法施用药物的改进的电极,其包括用于从电流源接收电流的导电元件; 具有多个网状物的网状元件,用于接收用于离子电渗疗法输送的离子药物溶液,所述网状物被加载或已经施加到其上,当水合时粘稠的亲水性聚合物; 以及用于将网状元件固定到导电元件的装置,使得当水合时和当电流被传送到导电元件时,电流将基本上均匀地分布通过网状元件。 目前优选的实施方案使用开孔聚氨酯泡沫作为网状元素和高分子量聚环氧乙烷作为亲水性聚合物。 网状物进一步装载有用于提高水合速率的表面活性剂吐温20。 根据本发明形成的网状元件在湿或干态下既柔韧又顺应,使得根据本发明形成的电极易于形成多种形状和尺寸,并且以相当低的成本相对容易制造 。
    • 5. 发明授权
    • Rehydratable product and method of preparation thereof
    • 可水化产品及其制备方法
    • US5328455A
    • 1994-07-12
    • US38798
    • 1993-03-29
    • Lindsay B. LlyodJon E. BeckTomasz J. Petelenz
    • Lindsay B. LlyodJon E. BeckTomasz J. Petelenz
    • A61N1/04A61N1/30
    • A61N1/0448
    • A hydratable iontophoretic bioelectrode including a plurality of layers of material capable of absorbing and holding an ionized fluid when placed in contact with the fluid. In one embodiment, a layer of a highly crosslinked dry hydrogel is used with a second layer of a more lightly crosslinked dry hydrogel. When the lightly crosslinked hydrogel layer is located so as to be in contact with the skin during iontophoresis, the medicament ions will be concentrated next to the skin. When the more highly crosslinked layer is located next to the conductive member, the undesirable effects of hydrolysis or corrosion of the conductive member are lessened. In another embodiment, adjacent layers are maintained at least partially out of contact from one another so as to improve the rate of hydration by disposition between the layers of spacing elements such as sugar or other dissolvable particles or cellulose or by forming a three dimensional pattern thereon.
    • 一种可水合的离子电渗生物电极,其包括多个能够在与流体接触放置时吸收和保持电离流体的材料层。 在一个实施方案中,使用高度交联的干水凝胶层与较轻交联的干水凝胶的第二层。 当离子电渗疗法中轻度交联的水凝胶层被定位成与皮肤接触时,药物离子将集中在皮肤附近。 当更高度交联的层位于导电构件旁边时,导电构件的水解或腐蚀的不良影响减小。 在另一个实施方案中,相邻层保持至少部分不相互接触,以便通过在诸如糖或其它可溶解颗粒或纤维素之间的间隔元件层之间的配置或通过在其上形成三维图案来改善水合速率 。