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    • 3. 发明授权
    • Thin film implantable electrode and method of manufacture
    • 薄膜可植入电极及其制造方法
    • US5324322A
    • 1994-06-28
    • US871352
    • 1992-04-20
    • Warren M. Grill, Jr.Graham H. CreaseyDavid A. KsienskiClaude S. VeraartJ. Thomas Mortimer
    • Warren M. Grill, Jr.Graham H. CreaseyDavid A. KsienskiClaude S. VeraartJ. Thomas Mortimer
    • A61N1/05A61N1/04
    • A61N1/05A61N1/0556
    • A sheet (30) of polymeric material defines a cuff portion (A), a contact portion (B), and an interconnecting elongated lead portion (C). Using physical vapor deposition (PVD), chemical vapor deposition (CVD), or other thin film deposition techniques, a plurality of electrodes (12), contact pads (16), and interconnecting leads (14) are deposited on the base layer. An elastomer covering layer (18) is laminated to the base layer. The elastomeric covering layer is stretched along direction (24) before lamination, such that at least the cuff portion is elastomerically biased to curl into a spiral. Windows (20) are defined in the elastomeric portion to provide for electrical conduction between the electrodes (12) and nerve tissue about which the cuff electrode is wrapped. The electrodes are arced (FIG. 6) such that they are more recessed adjacent sides of the window than adjacent the center in order to provide a substantially uniform flux density across the electrode surface.
    • 聚合物材料的片材(30)限定了袖带部分(A),接触部分(B)和互连的细长引线部分(C)。 使用物理气相沉积(PVD),化学气相沉积(CVD)或其它薄膜沉积技术,多个电极(12),接触焊盘(16)和互连引线(14)沉积在基层上。 弹性体覆盖层(18)层压到基层。 弹性体覆盖层在层压之前沿着方向(24)被拉伸,使得至少袖带部分被弹性偏置以卷曲成螺旋。 窗口20限定在弹性体部分中以提供电极(12)和袖带电极所围绕的神经组织之间的导电。 电极被弧形(图6),使得它们比邻近中心更靠近窗口的凹陷侧面,以便在电极表面上提供基本均匀的通量密度。
    • 7. 发明授权
    • Micturitional assist device
    • MICTURITIONAL ASSIST设备
    • US5199430A
    • 1993-04-06
    • US667523
    • 1991-03-11
    • Zi-Ping FangJ. Thomas MortimerGraham H. Creasey
    • Zi-Ping FangJ. Thomas MortimerGraham H. Creasey
    • A61N1/05
    • A61N1/36007A61N1/0556
    • Cuff electrodes (40a, 40b) are surgically implanted around S.sub.3 sacral ventral root nerve trunks (16a, 16b). The sacral ventral roots have smaller diameter nerve fibers (20a, 20b) which convey action potentials to cause detrusor activation to contract the bladder (10) and larger diameter nerve fibers (18a, 18 b) which carry action potentials for causing contraction of a urethral sphincter (12) to block the flow of urine from the bladder. A current source (50) causes current pulses (52) between such electrical contacts (46, 48) and a central electrical contact (44). The current pulses have an appropriate amplitude and waveform to initiate action potentials adjacent the central contact and to block the propagation of action potentials adjacent the end electrodes along the larger diameter nerve fibers (which have fewer nodes between the contacts) but not the smaller diameter nerve fibers (which have more nodes between the electrodes). In this manner, action potentials are electrically excited to propagate at least downstream on the smaller diameter nerve fibers causing contraction of the bladder. Concurrently, blocking action potentials are allowed to propagate upstream on at least the larger diameter nerve fibers, collision blocking naturally occurring action potentials propagating downstream. The transmission of action potentials downstream on the larger diameter nerve fibers is blocked by the current pulses allowing the urinary sphincter to relax.
    • 袖带电极(40a,40b)通过外科手术植入S3骶神经根神经干(16a,16b)周围。 骶腹根具有较小直径的神经纤维(20a,20b),其传达动作电位以引起逼尿肌激活以收缩膀胱(10)和较大直径的神经纤维(18a,18b),其具有引起尿道收缩的动作电位 括约肌(12)阻止尿液从膀胱流出。 电流源(50)在这种电触头(46,48)和中心电触点(44)之间引起电流脉冲(52)。 电流脉冲具有适当的幅度和波形,以引发邻近中心触点的动作电位,并阻止沿着较大直径的神经纤维(其中在触点之间具有较少节点)的端电极附近的动作电位的传播,而不是较小直径的神经 光纤(电极之间具有更多的节点)。 以这种方式,动作电位被电激励,至少在较小直径的神经纤维的下游传播,引起膀胱收缩。 同时,阻塞动作电位允许在至少较大直径的神经纤维上游传播,碰撞阻止在下游传播的自然发生的动作电位。 在较大直径的神经纤维下游的动作电位的传递被允许尿括约肌松弛的电流脉冲阻止。