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Implantable device and method for the electrical treatment of cancer

  • US 7,742,811 B2
  • Filed: 03/02/2004
  • Issued: 06/22/2010
  • Est. Priority Date: 03/13/2000
  • Status: Active Grant
First Claim
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1. A medical device for the treatment of abnormal tissue growth in a patient'"'"'s body comprising:

  • a power source;

    circuitry coupled to said power source;

    at least one electrode operably coupled to said circuitry wherein said circuitry delivers direct current electrical therapy involving multiple voltages to said at least one electrode continuously for a period of time not less than 1 minute for the treatment of abnormal tissue growths;

    a catheter operatively implanted into the patient'"'"'s body and into contact with the abnormal tissue growth for delivering a therapeutic agent to the abnormal tissue growth, said catheter having a central lumen open at a proximal end and a distal end, the distal end positioned at or near the abnormal tissue growth and the proximal end positioned external to the body and away from the abnormal tissue growth;

    a porous drug absorbing material coupled to the distal end of the catheter, said porous material in contact with a surface portion of the abnormal tissue growth; and

    an electrode array comprising a plurality of electrodes coupled to the circuitry and configured to steer the therapeutic agent along a predetermined path from the catheter distal end, said array comprising a plurality of point electrodes configured on the porous material.

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