Optikon cutters are pneumatically powered through a double Venturi pump system. The first Venturi pump generates a positive pressure to “PUSH” cutter blade. The second Venturi pump, in combination with a spring, generates a negative pressure (vacuum + mechanical force) to “PULL” cutter blade down to the starting point.
Normal vitreous cutters generate vitreous fluctuation. This is due to the cutter blade duty cycle (cutter port on/off) generating intermittent aspiration.
Optikon Vitreous Cutter blade duty cycle is “ASYMMETRICAL” because it keeps the cutter port in open position (full aspiration) longer than in closed position (interrupted aspiration).
The Optikon way to manage the cutter cycle ensures a higher and consistent reduction of the fluctuations, thanks to a shorter time of interrupted aspiration.
Optikon Vitreous Cutters work in the range 60 - 4000 cut/min. Full efficiency of Optikon Vitreous Cutters at high speed is ensured by the Push & Pull system, allowing the aspiration port to open completely even at 4000 cut/min.
Optikon high-cutting speed ensures further reduction of vitreous
fluctuations.
Competitors offer more complex/high cost solutions to achieve high speed, since they
have:
Different vitreous cutters for different cutting rates:
Standard vitreous cutters => 10 - 700 cut/min
High-speed vitreous cutters => 710 - 2500 cut/min
And/or
Different cutting actions for different vitreous cutters:
Pneumatic => Standard vitreous cutters
Rotative => High-speed vitreous cutters
Even when the duty cycle is almost at its upper position a large aspiration surface is still available.
“Port Angles” facilitate the cutting action even on very hard vitreous.
Even at upper position the blade does not close completely, remaining at 0.2 mm from port edge and thus allowing a reduced run.
This facilitates the high-speed cutting rate and eliminates vacuum
pulsations.
Continuous variable port:
Variable aspiration port (0.6-0.2 mm)
improves “quality & safety” of the aspiration at any cutting rates or cutter positions on the retina
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Compatible Products
+ VitModule