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Item code – #2782Intelect Legend Transport Ultrasound ONLY.

 

Chattanooga’s® Therapeutic Modalities provide solutions for:
Non-Narcotic Pain Control • Muscle Re-Education and Strengthening • Deep Heating • Tissue Healing and Stimulation

 

  • Fully functional 1 and 3.3 MHz frequencies.
  • Ten user-defined memory positions for User Protocols.
  • Pulsed and continuous therapy operation (10%, 20%, 50% and 100%)
  • Beam Nonuniformity Ratio (BNR) 5:1 maximum.
  • 110V or battery powered (If purchased seperately)
  • Unit uniquely designed for tabletop, wall mount, or mobile use.
  • Ergonomically designed sound head applicators comes in variety of sizes (1 cm², 2 cm², 5 cm² and 10 cm²) (The standard is 5 CM2, that comes with the unit if purchased unless otherwise specified.)
  • All sound head applicators are interchangeable due to Electronic Signature residing on all transducers.
  • Head warming feature on all sound head applicators.

 

 

Ultrasound General History :
Applications of ultrasound in medicine for therapeutic purposes have been an accepted and beneficial use of ultrasonic biological effects for many years. Low power ultrasound of about 1 MHz frequency has been widely applied since the 1950s for physical therapy in conditions such as tendinitis or bursitis. In the 1980s, high pressure-amplitude shockwaves came into use for mechanically resolving kidney stones, and “lithotripsy” rapidly replaced surgery as the most frequent treatment choice. The use of ultrasonic energy for therapy continues to expand, and approved applications now include uterine fibroid ablation, cataract removal (phacoemulsification), surgical tissue cutting and hemostasis, transdermal drug delivery, and bone fracture healing, among others. Undesirable bioeffects can occur including burns for thermal-based therapies and significant hemorrhage for mechanical-based therapies (e. g. lithotripsy). In all these therapeutic applications for bioeffects of ultrasound, standardization, ultrasound dosimetry, benefits assurance and side-effects risk minimization must be carefully considered in order to insure an optimal benefit to risk ratio for the patient. Therapeutic ultrasound typically has well-defined benefits and risks, and therefore presents a tractable safety problem to the clinician. However, safety information can be scattered, confusing or subject to commercial conflict of interest. Of paramount importance for managing this problem is the communication of practical safety information by authoritative groups, such as the AIUM, to the medical ultrasound community.

 

Ultrasound has seen development not only as a diagnostic imaging modality but as a therapeutic modality in which energy is deposited in tissue to induce various biological effects. Medical uses of ultrasound for therapy began to be explored in the 1930s. Early applications were tried for various conditions using the mechanism of tissue heating (). Over the following decades, scientific advances allowed improved methods for effective treatment of Meniere’s disease by destruction of the vestibular nerve, and of Parkinson’s disease using focused ultrasound for localized tissue destruction in the brain (; ). By the 1970’s, the use of therapeutic ultrasound was established for physiotherapy, and research continued on more difficult applications in neurosurgery (), and for cancer treatment (). Subsequently, the development of therapeutic ultrasound has accelerated with a wide range of methods now in use. The potent application of ultrasound for therapeutic efficacy also carries the risk of unintentional adverse bioeffects which can lead to significant, even life threatening patient injury. Therefore, standardization, ultrasound dosimetry, benefits assurance and side-effects risk minimization must be carefully considered in order to insure an optimal outcome for the patient.

 

 

Starting from the diagnostic reference frame, ultrasound is usually produced from a piezoceramic crystal in very short, i.e., 1- to 5-cycle, pulses. Diagnostic ultrasound is often characterized by the center frequency of the pulses (typically in the 2–12 MHz range), which is usually a frequency inherent to the thickness of the ceramic crystal. As the pressure amplitude, the frequency, or the propagation length is increased, the ultrasound wave can distort, which could ultimately lead to a discontinuity or shock in the waveform. In regard to bioeffects, increasing frequency, nonlinear acoustic distortion, or pulse length can increase heating and enhance some nonthermal mechanisms, e.g., radiation force. Decreasing frequency increases the likelihood of cavitation and gas body activation. Increasing power or intensity tends to increase the likelihood and magnitude of all bioeffects mechanisms. Therapeutic ultrasound devices may use short bursts or continuous waves to deliver effective ultrasonic energy to tissues. Some devices operate at higher amplitude and therefore tend to produce shocked or distorted waves.

 

Ultrasound-induced heating is the result of the absorption of ultrasonic energy in biological tissue. For diagnostic ultrasound, temperature elevations and the potential for bioeffects are kept relatively low or negligible () by carefully described indications for use, applying the ALARA (as low as reasonably achievable) principal, limited temporal average intensities, and generally short exposure durations. Therapeutic applications of ultrasonic heating therefore either utilize longer durations of heating with unfocused beams, or utilize higher intensity (than diagnostic) focused ultrasound. The use of unfocused heating, for example in physical therapy to treat highly absorbing tissues such as bone or tendon, can be moderated to produce enhanced healing without injury. Alternatively, the heat can be concentrated by focused beams until tissue is coagulated for the purpose of tissue ablation. Ultrasound heating which can lead to irreversible tissue changes follows an inverse time-temperature relationship. Depending on the temperature gradients, the effects from ultrasound exposure can include mild heating, coagulative necrosis, tissue vaporization, or all three.

 

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