A - Human Necessities – 61 – N
Patent
A - Human Necessities
61
N
326/4
A61N 1/40 (2006.01)
Patent
CA 1283712
METHOD AND APPARATUS FOR TREATMENT OF BIOLOGICAL TISSUE ABSTRACT The treatment of biological tissue is effected by a pulsed electric field induced by a time changing magnetic field produced by a magnetic coil or a plurality of magnetic coils. These magnetic coils are arranged in the area of desired treatment and respond to a driving current to induce the pulsed electric field into the localized treatment area. The driving current and concomitant magnetic field generates an electric field waveform that has a first pulse in a positive direction having a selected value followed by a second pulse in a negative direction having a larger value than the first pulse, and in turn followed by a third pulse in the positive direction having a value on the order of the first pulse. The apparatus for applying the driving current includes switching circuitry for energizing the magnetic coils in pairs to induce a symmetrical distribution of the magnetic and electric fields in the treatment area. This achieves time averaged uniformity of the pulse electric field in the tissue for applications such as stimulation of osteogenesis in long bone nonfusions.
512786
Bio-Electric Inc.
Kirby Eades Gale Baker
Welch Albert B.
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