Neuromodulation catheter

A tubular catheter configured to provide neuromodulation, comprising:

• a first electrically non-conductive catheter wall circumscribing a first lumen that extends from a proximal end of the first tubular catheter to a distal end thereof;
• a first electrically conductive portion formed on an exterior surface of the first catheter wall adjacent the distal end;
• a first electrical conductor extending from the proximal end to the distal end and electrically interconnected to the first electrically conductive portion;
• a second electrically non-conductive catheter wall circumscribing a second lumen that extends from a proximal end of the second tubular catheter to a distal end thereof;
• a second electrically conductive portion formed on an exterior surface of the second catheter wall adjacent the distal end;
• and
• a second electrical conductor extending from the proximal end to the distal end and electrically interconnected to the second electrically conductive portion;
• wherein the first catheter is affixed to the second catheter whereby the distal end of the second catheter is positioned between the distal end of the first catheter and the proximal end of the first catheter.

A pain mitigation system, comprising:

• a catheter having:
• an electrically non-conductive catheter wall circumscribing a lumen that extends from a proximal end of the tubular catheter to a distal end thereof;
• a first electrically conductive portion formed on an exterior surface of the catheter wall adjacent the distal end;
• a first electrical conductor extending from the proximal end to the distal end and electrically interconnected to the electrically conductive portion;
• and
• one or more holes extending through the catheter wall located nearer the proximal end than the first electrically conductive portion;
• a nerve stimulator configured to apply electrical pulses to the first electrically conductive portion;
• and
• a port providing access to the lumen at the proximal end of the tubular catheter.

A pain mitigation system, comprising:

• a catheter having:
• a first electrically non-conductive catheter wall circumscribing a first lumen that extends from a proximal end of the first tubular catheter to a distal end thereof;
• a first electrically conductive portion formed on an exterior surface of the first catheter wall adjacent the distal end;
• a first electrical conductor extending from the proximal end to the distal end and electrically interconnected to the first electrically conductive portion;
• a second electrically non-conductive catheter wall circumscribing a second lumen that extends from a proximal end of the second tubular catheter to a distal end thereof;
• a second electrically conductive portion formed on an exterior surface of the second catheter wall adjacent the distal end;
• and
• a second electrical conductor extending from the proximal end to the distal end and electrically interconnected to the second electrically conductive portion;
• wherein the first catheter is affixed to the second catheter whereby the distal end of the second catheter is positioned between the distal end of the first catheter and the proximal end of the first catheter.
• a nerve stimulator configured to apply electrical pulses to the first electrically conductive portion;
• and
• a port providing access to the one of the first lumen and the second lumen at the proximal end of the tubular catheter.

An assembly for neuromodulation, comprising:

• i) an outer catheter having an electrically non-conductive catheter wall circumscribing a lumen that extends through a proximal end of the outer catheter and through a distal end thereof, the distal end having an electrode disposed on an exterior surface of the catheter wall adjacent to the distal end;
• the proximal end having a hub with an injection port in connection with the lumen, and an electrical connector electrically connected to the electrode;
• ii) a half-needle inserted through the lumen of the outer catheter, the half-needle having a distal tip extending beyond the distal end of the outer catheter, and a proximal hub engageable with the hub of the outer catheter, the hub of the half-needle having a second electrical connector;
• iii) a deployable inner catheter partly circumferentially contained within the half-needle inserted through the lumen of the outer catheter;
• the inner catheter having an electrically non-conductive catheter wall circumscribing an inner lumen that extends through a proximal end of the inner catheter and through distal end thereof, the distal end extending beyond the distal end of the outer catheter and having one or more electrodes disposed on an exterior surface of the catheter wall, where one of the electrodes is adjacent to the distal end;
• the proximal end of the inner catheter extending through the proximal end of the outer catheter and having a hub with an injection port connected with the inner lumen, and electrical connectors independently electrically connected to the one or more electrodes;
• and
• a slidable connector located in-between the proximal end of the outer catheter and the hub of the inner catheter which prevents movement of the inner catheter relative to the rest of the assembly when engaged.