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Radiopaque marker for stereotaxic catheter

  • US 4,796,637 A
  • Filed: 06/17/1987
  • Issued: 01/10/1989
  • Est. Priority Date: 06/17/1987
  • Status: Expired due to Fees
First Claim
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1. A radiopaque marking system for a cathether, wherein said catheter includes at least one lumen parallel to an axis thereof, comprising:

  • said at least one lumen including a first length;

    a staff in said at least one lumen;

    said staff being a radiotransparent material;

    at least first and second bands of a radiopaque material axially spaced a predetermined distance apart on said staff;

    said staff including a second length;

    said second length being substantially equal to said first length, whereby said staff is disposed in a known position within said lumen;

    said at least first and second bands having a known positional relationship along a length of said staff, whereby said at least first and second bands also have a known positional relationship along a length of said catheter; and

    means for sealing said staff within said lumen, whereby said radiopaque material is isolated from an exterior of said catheter.

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