Instrument for ophthalmological surgery

Details Instrument for ophthalmological surgery Instrument for ophthalmological surgery

1993-08-16

1995-08-01

Pellegrino, Stephen C.

Surgery

Instruments

Light application

606 5, 606166, 606 12, 606 16, A61B 1736

Patent

active

054376572

ABSTRACT:
The surgical instrument apparatus emits a narrow beam of light that exits a point on the blade. The light crosses in front of the blade at a point predetermined by the surgeon. The light is reflected off the Descemet's membrane when the tip of the blade reaches the proper depth and bounces back into an entrance point on the blade. The reflected light is received by a light sensor that is coupled to a transmitter. The transmitter sends a signal to a receiver coupled to a tone generator. When the tone is generated, the surgeon knows that the incision has reached the proper depth.

REFERENCES:
patent: 3898840 (1975-08-01), McElroy
patent: 4273127 (1981-06-01), Auth et al.
patent: 4627435 (1986-12-01), Hoskin
patent: 4674503 (1987-06-01), Peyman et al.
patent: 4705037 (1987-11-01), Peyman et al.
patent: 5071417 (1991-12-01), Sinofsky

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