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Method of delivery therapeutic or diagnostic liquid into tissue surrounding a body lumen

  • US 5,611,775 A
  • Filed: 05/06/1994
  • Issued: 03/18/1997
  • Est. Priority Date: 03/15/1993
  • Status: Expired due to Term
First Claim
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1. A method of delivering therapeutic or diagnostic material in liquid form into tissue surrounding a body lumen of a patient comprising:

  • a) providing a catheter with;

    a catheter shaft having proximal and distal ends and at least one inner lumen extending therein;

    an inflatable member on a distal portion of the catheter shaft having an interior in fluid communication with the inner lumen extending within the catheter shaft and a wall with a plurality of small apertures extending therethrough; and

    means to direct therapeutic or diagnostic material in liquid form from the inner lumen to the interior of the inflatable member;

    b) advancing the catheter through a body lumen of a patient until the inflatable member is disposed at a site therein where the therapeutic or diagnostic liquid is to be delivered; and

    c) directing therapeutic or diagnostic liquid through the inner lumen into the interior of the inflatable member so that the liquid is ejected from the plurality of small apertures in the wall of the inflatable member in the form of a corresponding plurality of individual streams, each individual stream having a velocity capable of piercing the tissue surrounding the body lumen so that the liquid enters the tissue as a stream, to form a resevoir of therapeutic or diagnostic material within the tissue surrounding the body lumen.

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