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Spring guide wire with torque control for catheterization of blood vessels and method of using same

  • US 4,020,829 A
  • Filed: 10/23/1975
  • Issued: 05/03/1977
  • Est. Priority Date: 10/23/1975
  • Status: Expired due to Term
First Claim
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1. Method for introducing fluid into a remote internal body passageway from a first internal organ from which said passageway is successively angularly branched utilizing two separate elongated elements, one of said two elements being a flexible, wholly non-metallic, hollow catheter, the other of said two elements comprising a flexible guide wire means having a helically wound single layer multi-wire coil capable of transmitting rotational torque at a one-to-one ratio along a first major portion of its length, the distal portion comprising a single wire helical coil having primarily flexibility in bending and capable of transmitting torque only in an axial compressional direction, the distal portion of one of said two elements having a normal curvature imparted to it during fabrication, comprising the steps of:

  • a. introducing the distal portions of said two elements in concentric relationship into said first internal organ;

    b. advancing the distal portion of said element having a normal curvature into the entrance of a first branched passageway by axially manipulating a remote portion of said element having normal curvature from the exterior of the body;

    c. rotating the distal portion of said element having normal curvature for entrance into said first branched passageway by rotatably manipulating said element having normal curvature from the exterior of the body;

    d. advancing the distal portion of said catheter into said first branched passageway;

    e. rotating the distal portion of the guide wire for entrance into a second passageway branching from the first passageway by rotation of the portion exterior of the body;

    f. advancing the distal portion of the guide wire into said second passageway;

    g. advancing said catheter into said second passageway;

    h. removing said wire coil means;

    i. introducing said fluid into said catheter.

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