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Lumen mounted electrodes for pacing and intra-cardiac ECG sensing

  • US 4,595,012 A
  • Filed: 01/13/1984
  • Issued: 06/17/1986
  • Est. Priority Date: 01/13/1984
  • Status: Expired due to Term
First Claim
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1. An apparatus for making electrical contact within the heart of a patient comprising:

  • an elongated tube sized to pass through a vein or an artery and into the heart, said tube having proximal and distal ends, a peripheral wall, at least one lumen extending longitudinally within the tube and an opening in the peripheral wall which extends from the lumen to the exterior of the tube;

    an electrode including a conductive member with a generally axial passage;

    means at least partially within the lumen for mounting the electrode within said lumen with the electrode being exposed at said opening, said mounting means including a mounting member in said lumen, at least a portion of said mounting member being in said passage, extending into said lumen and being displaced axially of the opening to at least assist in mechanically locking the conductive member in the lumen;

    at least one conductive lead coupled to said electrode and extending from said electrode within said tube; and

    said peripheral wall having an outer peripheral surface which extends along a major length of said tube with the outline of said peripheral surface over said opening forming a body line and said electrode extends radially outwardly no farther than said body line whereby said apparatus is no larger radially at the electrode than at regions lying axially of the electrode and the mounting means.

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