Patil A A, Hahn F J, Spanta A D, Yamanshi W
Department of Surgery, University of Nebraska Medical Center, Omaha.
Int Surg. 1991 Jan-Mar;76(1):30-2.
The EFF probe has the capability of sharply focusing the eddy currents produced in tissue secondary to the electromagnetic field it generates. This sharp convergence of eddy current produces intense heat at the point of contact of the probe to the tissue, which can vaporize tissue. The probe diameter can be as small as required which makes it easy to be navigated into disc space for disc vaporization. Four discs were vaporized in three pigs by inserting the probe into the disc and vaporizing it. The vertebral columns were removed and transverse sections through the disc were made. Excellent disc vaporization was observed with vaporization of 70-80% of the nucleus. As the probe can be of flexible material it could be turned in different directions to vaporize necessary disc material.
EFF 探头能够将其产生的电磁场在组织中引发的涡电流进行精确聚焦。涡电流的这种急剧汇聚在探头与组织的接触点产生强烈热量，进而能够使组织汽化。探头直径可根据需要做得尽可能小，这使得它易于插入椎间盘间隙进行椎间盘汽化。通过将探头插入椎间盘并使其汽化，在三只猪身上汽化了四个椎间盘。取出脊柱并制作椎间盘的横切面。观察到椎间盘汽化效果极佳，髓核汽化率达70% - 80%。由于探头可以采用柔性材料制成，因此可以转向不同方向以汽化所需的椎间盘组织。
