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Rapidly exchangeable coronary catheter

  • US 6,129,708 A
  • Filed: 02/23/1999
  • Issued: 10/10/2000
  • Est. Priority Date: 01/30/1989
  • Status: Expired due to Fees
First Claim
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1. A catheter for accessing the coronary arteries in a human, the catheter having a proximal end and a distal end and comprising:

  • an elongate stiff proximal segment formed of metal;

    a relatively flexible elongate plastic member mounted to the proximal segment;

    said proximal segment being smaller in cross-sectional configuration than the plastic member and being substantially stiffer than the plastic member to provide a sufficient column strength for the proximal segment to resist buckling when advanced through the patient'"'"'s arteries;

    said plastic member having a longitudinally extending guidewire lumen, said guidewire lumen having a proximal opening and a distal opening whereby when a guidewire is contained within the lumen, the catheter will have continuous column support from its proximal end to its distal tip;

    said guidewire lumen being open only at said proximal and distal openings, said plastic member completely and continuously circumscribing the guidewire lumen to preclude a guidewire from exiting the guidewire lumen laterally between the proximal and distal openings; and

    an instrumentality carried by the distal end of the plastic member adapted to perform a procedure in a coronary artery.

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