APPARATUS FOR INTRAOCULAR SURGERY
 Inventors: Conor C. O'Malley, 1323 Gleneyrie Dr., San Jose, Calif. 95125; Ralph M. Heintz, Sr., 14734 Blossom Hill Rd., Los Gatos, Calif. 95030
 Filed: Apr. 3, 1974
 Appl. No.: 457,497
Related U.S. Application Data
 Continuation-in-part of Ser. No. 264,166, June 19, 1972, Pat. No. 3,815,604.
 U.S. CI 128/305; 128/276
 Int. CI A61b 17/32
 Field of Search 128/305,276
 References Cited
UNITED STATES PATENTS
3,614,953 10/1971 Moss 128/305
3,776,238 12/1973 Peyman et al 128/305
3,815,604 6/1974 O'Malley et al 128/305
FOREIGN PATENTS OR APPLICATIONS
437,932 11/1926 Germany 128/305
Primary Examiner—Channing L. Pace
Attorney, Agent, or Firm—Ben J. Chromy; Gerald L.
A pneumatically operated intraocular surgery apparatus which is of very light weight and small size, the cutting device inserted into the eye consisting of concentric tubes having a diameter of 1 mm. or less. Pneumatic means is provided to the device for moving one of the tubes with respect to the other at a slow or fast rate. Said pneumatic means includes a bellows provided with suction so that vitreous sucked into one of the tubes is sheared off by the sharp end of the other tube and the severed vitreous is sucked into a calibrated cylinder. An adjustable bleeder valve is provided in the vacuum line to eliminate residual suction on the interior of the eye when the cutting action is at rest.
8 Claims, 11 Drawing Figures