Duet Magna introduces the combination of electromagnetic technology and the double shockwave concept, allowing for some clear and unique advantages in the field of shockwave lithotripsy.
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Reducing Kidney Damage
An Indiana University study on Double Shockwave Lithotripsy (performed on the
Duet Magna's predecessor device) showed a 5-fold reduction in kidney
damage*. "The lesion produced by
2400 SWs (1200 SWs/head, power lever 10) at120 SWs/min in alternating mode was
quite low (0.22 ±0.09% FRV) and compares favorably with the lesion (1.08 ±0.38%
FRV) produced by 2400 SWs delivered with the HM3 Lithotripter at 120 SWs/min
(23kV)…" *Handa et al. Journal of Urology, February 2009
The Butterfly Focal Area
The Duet Magna is equipped
with two reflectors and performs Double Shockwave Lithotripsy (DSWL) from these
DSWL results in the formation of a unique Butterfly Focal Area that
concentrates pressure to the stone from two different angles, and spreads the
"head and tail" of the shock wave volume to reduce the risk of kidney
click image to enlarge
In fact, the Duet Magna roughly converts the focal volume to a
sphere, which is considered the ideal focal volume for lithotripsy.
The Butterfly Focal Area is superior to the conventional ellipsoid, or
"cigar", that only utilizes the central section of the focal
area. This renders the "head and tail" of the focal area
useless in terms of stone disintegration and only contributes to kidney damage.
Distribute the Energy to Reduce Renal Damage
The Duet Magna, like its predecssor, the electro-hydraulic Duet,
causes significantly less kidney damage than treamtents with a single
reflector. The clear advantage of Double Shockwave Lithotripsy lies in the fact
that the total number of shocks is divided between two areas of the kidney so
that only half of the shocks propagated towards the stone pass through the
lower part of the kidney, while the other half pass through the upper part.
A variety of fluoroscopy units can be used with Magna for stone
localization, 3Dscope dedicated systems or general purpose C-arms.
C-arms from a variety of manufacturers can easily be coupled to
the Duet Magna, and can be used for lithotripsy as well as for traditional
Direx offers 3DScope Premium, a dedicated, motorized, remote
controlled unit, with high quality digital imaging.
click images to enlrage
High frequency. Rotating anode, up to 20 Rad/min
*Mechanically built with required
height and length to match the focal point of Magna, it interconnects
mechanically as a single unit.
*Motorized rotation movement for
fast and precuse localization.
*Remote controlled from Magna
console, thus allowing treatments with minimal possible radiation to the
*Foldable arm leading to easy transportation for
Urological Procedure Options
The treatment table enables comfortable shockwave lithotripsy treatments, as
well as other urological procedures. The table is electrically operated on
three axes, plus the Trendelenburg movement.
Ideally, ultrasound localization should be applied by presenting an image that coincides with the shockwave delivery path. Magna's special design allows in-line ultrasound image acquisition without stopping the treatment session. On-line imaging allows continuous monitoring and control of the stone fragmentation process without stopping the treatment. Ultrasound and X-ray imaging can be operated and viewed simultaneously with the dedicated Duet Magna image processing software.