Politecnico di Torino - Corso Duca degli Abruzzi, 24 - 10129 Torino, ITALY

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CapsuloressiCapsulorhexisCataract surgeryChirurgia catarattaChirurgia del cristallinoFacoemulsificationFacoemulsificazioneLens surgerystrumento chirurgicosurgical instrument


Cataract surgery is performed under topical anesthesia, and is subject to errors caused by micro-movements of the patient’s eyeball or subject to individual variability given by the difference in the cataracts of each patient, as well as by the experience of the operator.
The instrument has an automatic and mechanical movement creating a more precise ressi than the manual technique.

Technical features

The instrument is inserted into the anterior chamber of the eye after incision at corneal limbus or clear cornea level. TLR = 3
The knurled stabilizing tooth is placed in a central position on the crystalline lens. Through the handle, the inclination of the outer body can be changed and adhere the tips at the end of the rods with the surface of the anterior capsule of the lens.
Once stabilized, the trigger is pressed on the handle releasing the spring, and this activates the simultaneous movement at 180° of both rotating rods which will then return to the discharge position at the end of the stroke (opposite position with respect to the primary position). The rod is in a lower plane than the rod inside the front chamber, at the end of the stroke the two rods cambaciano closing the ressi. The instrument is extracted from the anterior chamber and the phacoemulsification operation proceeds with the next steps.

Possible Applications

  • Cataract surgery.


  • The capsulorexy maneuver is continuous and regular in the circular incision of the anterior capsule of the lens;
  • Reduced surgical risks;
  • The manual device for capsulorexy is simple to manufacture;
  • Easily disclousable.