Patent ID: 11944572
Assignee: nan
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 11:
12. A method of phacoemulsification comprising:
contacting a crystalline lens of an eye with an aspiration tube presenting a cutting tip at a distal end thereof;
wherein the aspiration tube has a tube wall presenting an internal face and an external face, at least one internally extending pumping structure located proximal of the distal end of the aspiration tube and extending from the internal face into a lumen of the aspiration tube; and
engaging lens fragments separated from the crystalline lens during phacoemulsification and vibrating the aspiration tube torsionally or elliptically such that the at least one internally extending pumping structure creates or enhances a pumping action that urges fluid unidirectionally through the lumen to enhance proximal movement of the fluid and the lens fragments and to inhibit distal movement of the fluid and the lens fragments through the aspiration tube.