ExMI

Extracorporeal Magnetic Innervation (ExMI)

Pelvic Floor Therapy System

 

innervationExtracorporeal Magnetic Innervation (ExMI™) is based on the principle described by Faraday’s Law of Magnetic Induction. In the mid-1800s, Faraday demonstrated that muscular contractions could be induced by the application of a time-varying magnetic field. ExMIT technology is a highly advanced and sophisticated implementation of this basic principle, designed to help physicians manage the complex medical problem of urinary incontinence.

Extracorporeal Magnetic Innervation (ExMI™) is based on the principle described by Faraday’s Law of Magnetic Induction. In the mid-1800s, Faraday demonstrated that muscular contractions could be induced by the application of a time-varying magnetic field. ExMIT technology is a highly advanced and sophisticated implementation of this basic principle, designed to help physicians manage the complex medical problem of urinary incontinence.

ExMI technology works by producing a highly focused, time-varying magnetic field that penetrates deep into the perineum, innervating the pelvic floor muscles by activating motor neurons. Pulses of steep gradient magnetic flux are produced by the therapy head. These fields penetrate the patient’s perineum and initiate nerve impulses. The time-varying magnetic field creates an electrical potential, which causes an ion flow, or Eddy currents, in the tissues. This ion flow results in a depolarization of resting motor neuron membrane potentials. When a threshold potential is reached, an action potential is initiated for that neuron. This action potential then propagates naturally along the axion via the usual Na+ and K+ ion flows. Once these impulses reach the motor end plates, the musculature of the pelvic floor responds by contracting at a rate equal to the output pulse rate of the therapy head. The muscles contract and relax with each pulse. If the output pulse rate exceeds that of the muscles’ ability to contract and relax, the result is a constant, or steady, contraction of the muscles.

Simply put, ExMI technology induces nerve impulses, which cause muscle contractions and increase circulation.

Magnetic Neuromodulation

Pelvic Floor MuscleSince Michael Faraday discovered magnetic induction in 1831, we have continued to further our understanding and exploit the benefits of the interdependence of electricity and magnetism. Passing current through a coil of wire generates a magnetic field perpendicular to the current flow in the coil (right hand rule). If the coil is placed near a conducting medium, such as human tissues, and a time varying current is introduced into the coil, current will be induced in the conducting medium as a result of the changing magnetic field produced by the coil. One can think of the magnetic field produced by the coil as a non-invasive conduit between the electric current in the coil and the induced current in the tissues.

 

Pelvic Floor Inside ViewOver the last 50 years, engineers and scientists have provided many new solutions to medical problems by allowing physicians to non-invasively enter the body. This has been done with a number of forms of energy to help diagnosis disease and trauma (x-ray, CT, MRI, ultrasound, etc.), and in a few cases, actually provide a therapy as with lasers, kidney stone lithotripters and gamma particle devices (Gamma Knife®). Pulsed magnetic neuromodulation provides the first non-invasive and focal technique to excite neurons to positively impact cell function and are neurologic and neuromuscular disorders.

 

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