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Implantable stimulation lead having an advanceable therapeutic drug delivery system

  • US 5,531,780 A
  • Filed: 06/30/1994
  • Issued: 07/02/1996
  • Est. Priority Date: 09/03/1992
  • Status: Expired due to Term
First Claim
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1. An implantable pacing lead for use with a cardiac pacemaker, said pacing lead comprising:

  • an electrical conductor having a proximal end and a distal end;

    an insulation sheath encasing said electrical conductor;

    an electrical connector affixed to said proximal end of said conductor;

    an active fixation electrode assembly affixed to said distal end of said conductor, said electrode assembly having a helical electrode capable of axial advancement outward relative to said distal end for penetrating into myocardial tissue; and

    therapeutic delivery means for delivering a therapeutic compound, axially advanceable outward relative to said distal end along an axis of the helical electrode simultaneously with the advancing of said active fixation electrode assembly, said therapeutic delivery means comprising intrahelix means for penetrating myocardial tissue at a center of the helical electrode.

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