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Endocardial lead extraction apparatus and method

  • US 4,582,056 A
  • Filed: 09/17/1984
  • Issued: 04/15/1986
  • Est. Priority Date: 03/30/1983
  • Status: Expired due to Fees
First Claim
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1. An apparatus for removing an endocardial lead from the heart of a patient via a venous path, said endocardial lead having a free end and a distal end with a tip that is lodged in tissue in said heart, said apparatus comprising in combination:

  • (a) first catheter means, having a distal end and a proximal end, for insertion into a venous path to said heart;

    (b) lead grasping means for grasping a portion of said endocardial lead distant from said tip;

    (c) stylet means extending entirely through the length of said first catheter means and connected to said lead grasping means for manipulating of said lead grasping means from said proximal end of said first catheter means and drawing of said lead grasping means and a grasped portion of said endocardial lead into said distal end of said first catheter means and lodging said grasped portion of said endocardial lead in said distal end of said first catheter means;

    (d) stylet tension maintaining means disposed at the proximal end portion of said first catheter means for maintaining sufficient tension on said stylet means to cause said lead grasping means and said grasped portion of said endocardial lead to remain lodged inside of said distal end of said first catheter means and insecurely attached relationship to said distal end of said first catheter means;

    (e) second catheter means disposed concentrically about said first catheter means for controlled advancement over said first catheter means and said endocardial lead toward said tip and for engaging the tissue surrounding said tip and pushing said tissue surrounding said tip away from said tip to separate that tissue from said tip, said second catheter means having a distal end and a proximal end;

    (f) first means for effecting controlled advancing of said second catheter means over said first catheter means and said endocardial lead toward said tip; and

    (g) second means for effecting controlled advancing of said distal end of said second catheter means over said distal end of said first catheter means into sid tissue surrounding said tip and for effecting controlled rotation of said second catheter means relative to said first catheter means, to further effectuate said separating of said tissue from said tip.

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