Metron Accusonic Lipus
Low intensity pulsed ultrasound
Connective tissue growth stimulator
A major goal for clinicians when treating patients with a connective tissue injury is to facilitate the return of function, ideally in the shortest time possible. One method of accomplishing this is to accelerate the rate of tissue healing. Accusonic LIPUS represents a modality that has the potential to accomplish this. The Accusonic LIPUS is an ultrasound-based intervention device that has been designed specifically to facilitate the healing of injuries afflicting connective tissues. While ultrasound therapy has been used for many decades to treat connective tissue injuries, its use has not been met with overwhelming success. The LIPUS brings a new direction to ultrasound therapy, one that has evolved from scientific evidence.
Supplied with the following accessories:
- 1 x METLIPUSHEAD 1MHz 5cm2 Ultrasound Transducer
- 1 x PHYSIOGELU250ML 250ml Ultrasound Gel
- UNI3640 Elastic Wraps 7.5cm x 120cm
- 1 x Instruction Manual
The Accusonic LIPUS generates low-intensity pulsed ultrasound. Low-intensity pulsed ultrasound refers to pulsed-wave ultrasound with a spatial-average temporal average intensity equal to or less than 0.1 W/cm2. This compares to the intensity range of 0.5-3 W/cm2 traditionally used in clinical practice.2 Recent research has revealed a beneficial effect of lowintensity pulsed ultrasound on injured connective tissues, and on bone in particular. In three well-designed randomized controlled trials, low-intensity pulsed ultrasound therapy was found to reduce healing times in tibal3 , radial4and scaphoid5 fractures by between 30% and 38%, when compared to placebo treated fractures. After pooling the results of the 158 fractures investigated, a weighted average size was calculated at 6.41 which converts into mean difference in healing time of 64 days between low-intensity pulsed ultrasound treated and placebo treated fractures6. This represents a significant reduction in healing time and patient morbidity.
In addition to its beneficial effects on acute fracture repair, low-intensity pulsed ultrasound has also been shown to facilitate healing in fractures displaying delayed-and nonunion. When applied to non-united fractures, it stimulated union in 86% of cases.7 These are fractures that would not have otherwise healed without intervention.
While the low-intensity pulsed ultrasound produced by the Accusonic LI-PUS has the potential to be used for the treatment of complete bone fractures, its benefits are thought to extend to other injuries and tissues. Considering stress fractures heal in comparable stages to complete bone fractures and that they consist of small undisplaced fractures similar to those intervened in the randomized controlled trials on fracture repair, the LIPUS is anticipated to have beneficial fractures on stress fractures. The use of low-intensity pulsed ultrasound in the treatment stress fractures has preliminary support.8 Similarly, the benefits of the LI-PUS may extend beyond its established effects on injured bone. This is predicted from the beneficial effect of low-intensity pulsed ultrasound on the inflammatory phase of fracture repair. Given the inflammatory phase of cellular processes, it is valid to hypothesize that the low-intensity pulsed ultrasound produced by the LI-PUS will also have significant beneficial effects on alternative tissues displaying an acute inflammatory reaction. This theory has preliminary experimental support from the beneficial effect of low-intensity pulsed ultrasound on the repair of acute ligament injuries.9
ACCUSONIC LIPUS - Connective Tissue Growth Stimulator SPECIFICATIONS
| MAINS SUPPLY REQUIREMENTS: | |
| Voltage | 110/220/240 Volts AC |
| Frequency | 50/60 Hz |
| Power | 65 VA |
| FUSES: | |
| Primary external | 2 of 1 A 5 x 20 mm DA205 Delay |
| Secondary internal | 1 of 2A 5 x 20 mm M205 |
| MAINS STEP-DOWN TRANSFORMER: | |
| Integrated switch-mode power supply complying with international standard IEC 601-1: | 1988 (EN 60601-1) and all subsequent amendments. |
| ULTRASOUND OUTPUT: | |
| Frequency: | 1.1 MHz +/- 10% |
| Output intensity: | 100 mW/cm2 +/- 20% (Temporal Average) |
| Applicator Surface Area: | 9.0 square cm +/- 4% |
| Effective Radiating Area: | Nominally 5.0 square cm +/- 20% |
| Beam Nonuniformity Ratio: | Nominally 5:1 +/- 20% |
| Pulsed Modulation | |
| Pulse frequency: | 100 Hz +/- 3% |
| Pulse period: | 10 milliseconds +/- 3% |
| Pulse width: | 2.0 milliseconds +/- 3% |
| Pulse duty cycle: | 1:4 (20%) +/- 3% |
| Preset treatment time: | 20 minutes +/- 2% |
| At time expiration treatment timer display is off and a two second audible alarm sounds | |
| CONTROLS AND DISPLAYS: | |
| On/Off power button: | Soft touch power On and Off control. |
| Power On LED indicator: | Bright green indicator shows unit is switched on. |
| Treatment Start/Pause button: | Simple one button operation to Start or Pause/Resume treatment. |
| Four segment LED Treatment Timer bargraph: | Elapsed treatment time is shown intuitively using bargraph with varying flash rates. |
| Patient instructions: | Instructions for normal usage are conveniently printed on front panel. |
| ELECTRICAL SAFETY: | |
| Manufactured to International standards: | EN60602.1 (1998) Approval and Test Specification Medical Electrical Equipment Part 1:
General Requirements EN60601.2.5 (1992) Approval and Test Specification Ultrasonic Therapy Equipment |
| Applied Parts: | Treatment applicator |
| Applied Parts Classification: | BF |
| Device Classification: | Class 1 Equipment (CE) |
| DIMENSIONS: | |
| Width | 240 mm |
| Height | 120 mm |
| Depth | 2540 mm |
| WEIGHT: | |
| Packed | 3 kg |
| Unpacked | 2.5 kg |
| ENVIRONMENTAL CONDITIONS: | |
| Operating: | Temperature Range 0 - 70 C Relative Humidity 30% - 90% |
| Transport & Storage: | Temperature Range 0 - 70 C Relative Humidity 10% - 100% |
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