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Pacing catheter and method of making same

  • US 4,699,157 A
  • Filed: 08/27/1985
  • Issued: 10/13/1987
  • Est. Priority Date: 08/27/1985
  • Status: Expired due to Fees
First Claim
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1. A longitudinally extended catheter body exhibiting improved torque control comprising:

  • (a) an outer polymeric jacket made of at least one hollow tube formed from a first polymeric material which provides circumferential strength and rigidity;

    (b) a single wire torque member extending longitudinally within said polymeric jacket, said torque member being electrically conductive and extending substantially along the longitudinal axis of said catheter body, said wire torque member having a diameter substantially smaller than the inside diameter of said outer polymeric jacket and being capable of transmitting torque forces along its length;

    (c) distal electrode means attached to an end of said wire torque member; and

    (d) a second polymeric material in the form of a solidified filling material enveloping said torque member within and substantially filling said outer polymeric jacket at least discontinuously along the longitudinal extent thereof, said solidified polymeric material having a different firmness from that of the polymeric jacket and having adhesive properties so that it is adherent to both the inner walls of said polymeric jacket and to said wire torque member to form an effectively rotationally rigid circumferential web therebetween;

    whereby said catheter body enables the transmission of torque forces between the outside surface of said polymeric jacket and said torque member for improved rotatability of said catheter body.

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