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    • 49. 发明授权
    • Implantable medical electrical stimulation lead fixation method and apparatus
    • 植入式医用电刺激铅固定方法及装置
    • US07330764B2
    • 2008-02-12
    • US10833761
    • 2004-04-28
    • John M. SwoyerKeith CarltonMartin T. GerberGeorge J. MamoMichele SpinelliSteven David Hartle
    • John M. SwoyerKeith CarltonMartin T. GerberGeorge J. MamoMichele SpinelliSteven David Hartle
    • A61N1/18
    • A61N1/0558A61N1/0551
    • An implantable medical electrical lead particularly for stimulation of the sacral nerves comprises a lead body extending between a distal end and a proximal end, and the distal end having at least one electrode of an electrode array extending longitudinally from the distal end toward the proximal end. The lead body at its proximal end may be coupled to a pulse generator, additional intermediate wiring, or other stimulation device. A fixation mechanism is formed on or integrally with the lead body proximal to the electrode array that is adapted to be implanted in and engage subcutaneous tissue, particularly muscle tissue, to inhibit axial movement of the lead body and dislodgement of the stimulation electrodes. The fixation mechanism comprises a M tine elements arrayed in a tine element array along a segment of the lead proximal to the stimulation electrode array. Each tine element comprises at least N flexible, pliant, tines, each tine having a tine width and thickness and extending through a tine length from an attached tine end to a free tine end. The attached tine end is attached to the lead body from a tine attachment site and supports the tine extending outwardly of the lead body and proximally toward the lead proximal end. The M×N tines are adapted to be folded inward against the lead body when fitted into and constrained by the lumen of an introducer such that the tine free ends of more distal tines of more distal tine elements are urged toward or alongside the attached tine ends of the adjacent more proximal tines of more proximal tine elements, and the folded tines do not overlap one another.
    • 特别是用于刺激骶神经的可植入医用电气引线包括在远端和近端之间延伸的引线体,并且远端具有从远端向近端纵向延伸的电极阵列的至少一个电极。 其近端的引线体可以耦合到脉冲发生器,附加的中间布线或其它刺激装置。 在与电极阵列接近的引线体上形成一体的固定机构,该固定机构适于被植入并接合皮下组织,特别是肌肉组织,以抑制引线体的轴向移动和刺激电极的移动。 固定机构包括沿着靠近刺激电极阵列的引线的段排列在齿元件阵列中的M元件。 每个齿元件包括至少N个柔性,柔韧的尖齿,每个齿具有齿的宽度和厚度并且延伸穿过齿长从附接的齿端延伸到游离齿端。 附着的尖端从齿附着位置附接到引线本体,并且支撑从引线主体向外延伸并向近端朝向引线近端的齿。 MxN齿适合于当插入导引器的内腔并被约束的引导体时向内折叠,使得更远端的尖齿元件的更远远的尖齿的齿自由端朝着或与其相连的齿端被推向 相邻的更接近的尖齿元件的近端齿,并且折叠的齿不相互重叠。