US Patent 11986423 Method of using a vitrectomy instrument

A method of using a vitrectomy instrument are disclosed herein. This method comprises the steps of: (i) providing a vitrectomy instrument; (ii) operating the vitrectomy instrument in a first mechanical cutting mode where a cutting power generator of the vitrectomy instrument is used to reciprocably drive the tubular body portion for shearing the tissue, the vitreous, and/or the silicone oil; and (iii) operating the vitrectomy instrument in a second ultrasonic cutting mode where the cutting power generator is inactive, and an ultrasonic generator of the vitrectomy instrument is used to vibrate the tubular body portion for vibratory fragmentation and/or cutting of the tissue, the vitreous, and/or the silicone oil.