04316465 is referenced by 128 patents and cites 22 patents.

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 device for cutting tissue, that extends into the aspiration needle. The cutting device is moved by a driving device that rotates as it moves, to rotate the cutting device during the cutting motion. The aspiration passageway is also provided with a supply for reflux irrigation to assist in removal of tissue from the aspiration port.

Title
Ophthalmic handpiece with pneumatically operated cutter
Application Number
25537
Publication Number
4316465
Application Date
November 29, 1979
Publication Date
February 23, 1982
Inventor
Robert S Dotson Jr
421 Warner Park Rd., Manhattan, 66442
KS, US
IPC
A61M 1/00
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