Implantable microelectrode
    1.
    发明授权
    Implantable microelectrode 失效
    可植入微电极

    公开(公告)号:US5515848A

    公开(公告)日:1996-05-14

    申请号:US482189

    申请日:1995-06-07

    摘要: A miniature, electrically-insulated multi-conductor electrical cable suitable for implantation in living bodies and readily connected to sensors or electrodes, and implantable microelectrodes attached to such cables. Individual electrical conductors are coated with at least one layer of, insulating material and stranded together, or optionally bound together by an additional layer of insulating material which is compatible with implantation in living bodies. The individual conductors are separated from one another in terminal portions of the cable and are held by a ribbonizing resin at a predetermined pitch to facilitate connection of each of the conductors. The terminal portions may define microelectrodes. Another microelectrode includes an electrically conductive electrode core member sharpened and coated with a thin layer of a dielectric material. An extremely small area of the core at the sharpened point is exposed by ablating the dielectric material by the use of an ultraviolet laser beam scanned over the material. Multiple conductor microelectrodes may also be supported within a hollow needle or in flat ribbon configuration, with openings in dielectric material defining active electrode sites. Multiple active electrode sites may be defined on a microelectrode accompanied by an integrated circuit after connection of the integrated circuit to a multiconductor cable.

    摘要翻译: 适用于植入生物体并容易连接到传感器或电极的微型电绝缘多导体电缆,以及连接到这种电缆的可植入微电极。 单个电导体涂覆有至少一层绝缘材料并且绞合在一起,或者可选地通过与植入在活体中相容的附加绝缘材料层结合在一起。 单个导体在电缆的端子部分彼此分离,并且以预定间距由带状树脂保持,以便于每个导体的连接。 端子部分可以限定微电极。 另一个微电极包括一个导电电极芯件,它被削尖并涂覆有一层介电材料。 通过使用在材料上扫描的紫外激光束来烧蚀电介质材料,在锐化点处的芯的极小区域被暴露。 多导体微电极也可以支撑在空心针或扁平带状结构中,电介质材料中的开口限定活性电极位置。 在集成电路连接到多导体电缆之后,可以在伴随着集成电路的微电极上限定多个活性电极位置。

    Method of making implantable microelectrode
    2.
    发明授权
    Method of making implantable microelectrode 失效
    制造可植入微电极的方法

    公开(公告)号:US5524338A

    公开(公告)日:1996-06-11

    申请号:US362806

    申请日:1994-12-22

    摘要: Microelectrodes for use in stimulating and detecting activity in neurons of living organisms, and a method of manufacturing such microelectrodes. An electrically conductive electrode core member is sharpened and coated with a thin layer of a dielectric material. An extremely small area of the core at the sharpened point is exposed by ablating the dielectric material by the use of ultraviolet laser beam scanned over the material. Multiconductor microelectrodes include multiple fine wires which may be arranged in helical strands, optionally supported by a central core member of stiffer material. Multiple conductors may also be supported within a tubular support such as a hollow needle whose distal end is cut at a slant to expose the conductors, or in flat ribbon configuration with openings in dielectric material defining active electrode sites. Multiple active electrode sites may be defined on a microelectrode accompanied by an integrated circuit after connection of the integrated circuit to a multiconductor cable.

    摘要翻译: 用于刺激和检测活生物体神经元活性的微电极,以及制造这种微电极的方法。 导电电极芯构件被磨削并涂覆有介电材料的薄层。 通过使用在材料上扫描的紫外激光束来烧蚀电介质材料,在锐化点处的芯的极小区域被暴露。 多导体微电极包括多个细线,其可以布置成螺旋线,任选由较硬材料的中心芯构件支撑。 多个导体也可以被支撑在管状支撑件内,例如中空针头,其远端以倾斜方式被切割以露出导体,或者在具有限定活性电极位置的介电材料中具有开口的扁平带状构造中。 在集成电路连接到多导体电缆之后,可以在伴随着集成电路的微电极上限定多个活性电极位置。

    Miniature controlled-impedance transmission line cable and method of
manufacture
    4.
    发明授权
    Miniature controlled-impedance transmission line cable and method of manufacture 失效
    微型控制阻抗传输线电缆及其制造方法

    公开(公告)号:US5015800A

    公开(公告)日:1991-05-14

    申请号:US454022

    申请日:1989-12-20

    摘要: A miniature controlled-impedance transmission line consists of a flexible cable having side-by-side conductors transmitting high frequency signals. The cable is preferably in the form of a pair of conductors, each surrounded by respective inner and outer dielectric layers of different compositions. The inner and outer dielectric layers are applied to each conductor independently of the other conductor, after which the respective outer dielectric layers of the two conductors are bonded together in side-by-side relationship without altering the inner dielectric layers. The result is a conductor pair having minimum cross-section for high-density applications and uniform capacitance which is also stable in that it will not change with subsequent bending or handling. Preferably, the conductors, with their inner and outer dielectrics, are helically twisted together prior to bonding so that the bonding forms a permanently twisted pair having not only uniform and stable capacitance but also uniform and stable lay length with resultant uniform electrical delay characteristics of both conductors.

    摘要翻译: 微型可控阻抗传输线由具有并排导体传输高频信号的柔性电缆组成。 电缆优选地是一对导体的形式,每个导体被不同组成的相应的内部和外部电介质层围绕。 内部和外部电介质层独立于另一导体施加到每个导体,之后两个导体的各个外部电介质层并排地结合在一起而不改变内部电介质层。 结果是具有用于高密度应用的最小横截面的导体对和均匀的电容,其也是稳定的,因为随后的弯曲或处理不会改变。 优选地,导体与其内部和外部电介质在接合之前螺旋地绞合在一起,使得接合形成永久性双绞线,其不仅具有均匀和稳定的电容,而且具有均匀和稳定的敷设长度,同时得到均匀的电延迟特性 导体

    Yieldably extensible self-retracting shielded cable
    5.
    发明授权
    Yieldably extensible self-retracting shielded cable 失效
    可伸缩的自回避屏蔽电缆

    公开(公告)号:US4861945A

    公开(公告)日:1989-08-29

    申请号:US281741

    申请日:1988-12-09

    IPC分类号: H01B7/06

    CPC分类号: H01B7/065

    摘要: A yieldably extensible, self-retracting cable comprises a flexible center conductor surrounded by a primary dielectric material with a flexible wire shield exterior thereof and a thermoplastic or thermosetting elastomeric outer jacket formed permanently in a helical shape. The primary dielectric insulation comprises materials such as polymeric fluorocarbon or irradiated polyethylene having an exceptionally low dielectric constant. The low dielectric constant is maintained despite the permanently coiled configuration of the cable by ensuring that the plasticizing or curing temperature of the jacket is less than the melting or other degradation temperature of the dielectric material, and by utilizing unbraided wire shielding comprising a pair of concentric layers of wire wound helically in mutually-opposite directions to avoid mechanical injury of the dielectric material.

    摘要翻译: 可收缩的可延伸的自回缩电缆包括柔性中心导体,该柔性中心导体被主电介质材料包围,其中外部具有柔性电线屏蔽,以及永久形成为螺旋形状的热塑性或热固性弹性体外护套。 主介电绝缘体包括诸如聚合物碳氟化合物或具有极低介电常数的辐射聚乙烯的材料。 尽管通过确保护套的塑化或固化温度小于介电材料的熔化或其它降解温度,并且通过利用包括一对同心的未填充的电线屏蔽来保持低介电常数,尽管电缆的永久卷绕构型 电线缠绕在互相相反的方向上缠绕,以避免电介质材料的机械损伤。