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Double-wall balloon catheter for treatment of proliferative tissue

DC
  • US 5,913,813 A
  • Filed: 07/24/1997
  • Issued: 06/22/1999
  • Est. Priority Date: 07/24/1997
  • Status: Expired due to Term
First Claim
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1. Apparatus for delivering radioactive emissions to a body location with a uniform radiation profile, comprising:

  • (a) a catheter body member having a proximal end and distal end;

    (b) an inner spatial volume disposed proximate the distal end of the catheter body member;

    (c) an outer, closed, inflatable, chamber defined by a radiation transparent wall affixed to the body member proximate the distal end thereof in surrounding relation to the inner spatial volume with a predetermined constant spacing between said inner spatial volume and the radiation transparent wall;

    (d) a material containing a radionuclide(s) disposed in one of the inner spatial volume and outer chamber; and

    (e) means disposed in the other of the inner spatial volume and outer chamber for rendering uniform the radial absorbed dose profile of the emissions from the one of the inner spatial volume and outer chamber containing the radionuclides.

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