1
Robert S Dotson Jr: Ophthalmic handpiece with pneumatically operated cutter. February 23, 1982: US04316465 (128 worldwide citation)

An ophthalmic handpiece is disclosed. The handpiece includes coaxial irrigation and aspiration needles, with passageways through the body of the handpiece for connection to conventional equipment for supplying irrigation and aspiration. Within the aspiration needle, there is a reciprocating cutting ...


2
Robert S Dotson Jr: Pneumatic ultrasonic surgical handpiece. Pitts and Brittian, September 2, 1986: US04609368 (112 worldwide citation)

A surgical handpiece having an ultrasonically driven tool operated by gas under pressure. A surgical handpiece useable for ophthalmic and other microsurgery uses a whistle for generating ultrasonic waves and causing a driving member to reciprocate at ultrasonic frequency. The handpiece has a probe w ...


3
Robert S Dotson Jr: Fluid operated ophthalmic irrigation and aspiration device. Ernest B Lipscomb III, June 23, 1981: US04274411 (45 worldwide citation)

A fluid operated and controlled irrigation and aspiration device for ophthalmic use. A source of fluid under pressure is connected through foot pedal operated valves to clamps for controlling irrigation through a conventional handpiece, and to a vacuum generating device. Selecting valves are provide ...