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Porous electrode with enhanced reactive surface

  • US 5,074,313 A
  • Filed: 04/20/1990
  • Issued: 12/24/1991
  • Est. Priority Date: 03/20/1989
  • Status: Expired due to Term
First Claim
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1. An electrode implantable inside a patient, comprising:

  • an electrode body constructed of an electrically conductive filament structure including a plurality of elongate fiber elements with diameters of at least five microns, said fiber elements bundled in close proximity with one another and forming multiple passages throughout the electrode body and open to the exterior of the body, whereby an exposed surface of the electrode body includes an exterior surface portion, and an interior surface portion along and defining said passages, with the volume occupied by the passages comprising more than one half of the total volume occupied by the electrode body; and

    a surface texture comprising multiple surface irregularities formed over substantially the entire exposed surface of the electrode body, thereby to substantially increase the surface area of said exposed surface as compared to an equivalent smooth surface of an identically sized electrode body.

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