Enjoy low-traction work
Unlike conventional guillotine cutters with their open and closed positions, the opening of the Continuous Flow Cutter remains open at all times. A 0.1 mm wide double‑edged blade cuts forwards and backwards, doubling the number of vitreous body portions per cycle. This can shorten the time needed for vitreous body removal while enabling high cutting speeds with continuous aspiration, even with small gauge sizes.

Discovery of the pneumatic push-pull principle
Oertli made an international breakthrough in vitreoretinal surgery with its invention of the first vitrectomy cutter in 1971. The push-pull principle for pneumatic cutters is another discovery by Oertli. The pneumatic push-pull principle uses the pneumatic force for both the forward and the backward movement. This generates a continuously high cutting force in both directions and eliminates the hysteresis associated with spring-driven systems that results from their limited physical conditions.

Features and benefits of the Continuous Flow Cutter

  • Continuously open port generates less traction force on the retina[1]
  • Full control over aspiration thanks to the unique SPEEP pump[2, 3]
  • Minimal distance between port opening and surface for close cutting to tissue
  • Constant cutting force with up to 10,000 cpm thanks to 100% quality control 4 [4]
  • High-speed cutting using the pneumatic push-pull principle discovered by Oertli

Duty cycle? Not an issue
The duty cycle is obsolete because the port is always open. Oertli fluidics uses the physical principle to full advantage. The unique SPEEP pump combines the best properties of the peristaltic and venturi pumps because flow and vacuum can be controlled at the same time. This gives surgeons full control over aspiration and ensures precision for modern vitreoretinal surgery.

Cutting close to the tissue
The minimal distance of 0.17 mm (27G) between the port opening and the surface enables the surgeon to work closely at the tissue, enabling precise manoeuvring at the retina.

See the CF Cutter in application now


Continuous Flow Cutter disposable
VV104110 Continuous Flow Cutter 20G,
sterile/single use, box of 10
VV106110 Continuous Flow Cutter 23G,
sterile/single use, box of 10
VV105110 Continuous Flow Cutter 25G,
sterile/single use, box of 10
VV107110 Continuous Flow Cutter 27G,
sterile/single use, box of 10



Do you want to find out more about it?

Oertli data on file

[1] Compared to previous generation of SPS cutter

[2] SPEEP pump has pre-set of maximum flow rate

[3] Modulation according to the principle of the peristaltic pump

[4] 100% final inspection with cutting test