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Intravenous channel cardiac electrode and lead assembly and method

  • US 4,332,259 A
  • Filed: 09/19/1979
  • Issued: 06/01/1982
  • Est. Priority Date: 09/19/1979
  • Status: Expired due to Term
First Claim
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1. A lead assembly for intravenously conducting electrical signals to or from a patient'"'"'s heart, the lead assembly comprising in combination:

  • a. a core lead having first and second ends, said core lead includingi. first flexible sleeve means;

    ii. a first conductor surrounded by material of said first flexible sleeve means, said first conductor extending approximately between the first and second ends of said core lead;

    iii. first electrode means attached to said first flexible sleeve means approximately at the first end of said core lead, said first electrode means being electrically connected to said first conductor;

    b. a first removable stylet extending through said first flexible sleeve means to facilitate control of said core lead, said core lead being preformed to tend to assume a straight configuration when said first stylet is removed from said core lead;

    c. a channel lead having first and second ends, said channel lead includingi. second flexible sleeve means, said second flexible sleeve means having an elongated channel for receiving said core lead, said channel extending through a major portion of the length of said channel lead, said channel extending from a first opening in said channel lead to a second opening in said channel lead, said first opening being located at said first end of said channel lead, said second opening being a side port opening located a first predetermined distance from said second end of said channel lead;

    ii. a second conductor surrounded by material of said second flexible sleeve means, said second conductor being disposed outside of said channel and extending approximately between the first and second ends of said second flexible sleeve means;

    iii. second electrode means attached to said second flexible sleeve means approximately at the first end of said channel lead, said second electrode means being electrically connected to said second conductor; and

    d. a second removable stylet extending through said second flexible sleeve means to facilitate control of said channel lead, said core lead being disposed in said channel of said channel lead, the first end of said core lead extending from said first opening and the second end of said core lead extending from said second opening, said first opening being located within the patient'"'"'s heart when said channel lead is positioned to conduct the electrical signals to a predetermined portion of the patient'"'"'s heart, said channel lead being performed to tend to assume a bent, J-shaped configuration located approximately at the location of said side port opening to cause said second end of said channel lead to move into the atrial appendage of the patient'"'"'s heart when said second stylet is removed, said side port opening being located near the lowest portion of said bent, J-shaped configuration when the second end of said channel lead is in the highest or superior portion of the atrial appendage, said core lead extending through said side port opening deep into the right ventricle of the patient'"'"'s heart.

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