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Percutaneous discectomy using the electromagnetic field focusing probe. A feasibility study.
A A Patil1, F J Hahn, A D Spanta
1Department of Surgery, University of Nebraska Medical Center, Omaha.
International Surgery
|January 1, 1991
Summary
The electromagnetic field (EFF) probe precisely targets tissue, causing intense heat for vaporization. This technology successfully vaporized 70-80% of disc nucleus in animal studies.
Area of Science:
- Biomedical Engineering
- Minimally Invasive Surgery
Background:
- Electromagnetic field (EFF) technology offers precise tissue interaction.
- Focused eddy currents can generate localized intense heat for tissue ablation.
Purpose of the Study:
- To evaluate the efficacy of a novel EFF probe for precise tissue vaporization.
- To assess the feasibility of using the EFF probe for disc vaporization in an in vivo model.
Main Methods:
- An EFF probe designed for focused eddy current generation was utilized.
- The probe was inserted into intervertebral discs of three pigs for vaporization.
- Histological analysis of transverse sections was performed to evaluate the extent of vaporization.
Main Results:
- The EFF probe demonstrated the ability to sharply focus eddy currents, producing intense localized heat.
- Successful vaporization of 70-80% of the nucleus pulposus was achieved in four treated discs.
- The probe's small and potentially flexible nature facilitated navigation and targeted ablation within the disc space.
Conclusions:
- The EFF probe is effective for precise tissue vaporization, particularly for disc material.
- This technology shows promise for minimally invasive procedures requiring targeted ablation within anatomical structures.