Coiled RF electrode treatment apparatus

Details Coiled RF electrode treatment apparatus Coiled RF electrode treatment apparatus

1994-08-16

1996-04-16

Pellegrino, Stephen C.

Surgery

Instruments

Electrical application

606 48, 607101, 607154, 607156, 128642, A61B 1739

Patent

active

055077439

ABSTRACT:
An RF treatment apparatus provides multi-modality treatment for tumors and other desired tissue masses, and includes an RF indifferent electrode and an RF active electrode. The RF indifferent electrode has a compacted, non-deployed state, and an expanded deployed state. In the deployed state, the RF indifferent electrode forms a helical structure with four or less coils that surround an exterior of the tumor. The indifferent electrode becomes a microwave antenna when it is coupled to a microwave source. RF ablation energy is delivered to the tumor by the RF active electrode after it has been introduced into the tumor. Both electrodes are coupled to an RF energy source. The indifferent electrode is coupled to a microwave source. Either or both of the electrodes is hollow and include fluid distribution ports for the purpose of providing a chemotherapeutic agent to the tumor site. Ablation energy is supplied to the tumor by the active electrode. The RF indifferent electrode then is switched and becomes a microwave antenna, providing hyperthermia to the tumor and surrounding area. Thereafter, a chemotherapeutic agent is supplied to the tumor site.

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