Hand held intraocular pressure recording system

Details Hand held intraocular pressure recording system Hand held intraocular pressure recording system

1991-10-11

1992-12-29

Shay, Randy C.

Surgery

Truss

Pad

128652, A61B 316

Patent

active

051742926

ABSTRACT:
A hand held portable tonometer device for monitoring the intraocular pressure in an eye through the sclera. The device has a tubular frame having an axis and forming a handle by which the device is held. The handle includes a pressure transducer for generating intraocular pressure measurements upon contact of a scleral probe on the eye to cause a scleral indentation and to transmit an input of the intraocular pressure. The transducer has a sliding transducer mounting sleeve mounting it on the axis. A spring positions the transducer along the axis at a point in response to pressure applied by urging the scleral probe against the sclera. The device includes an annular conductive ring mounted on the mounting sleeve and electrical contacts positioned at a predetermined position on the axis to complete an electrical circuit to generate a signal defining a zone of measurement which has predetermined upper and lower limits of pressure. An output device is mounted in the frame for recoding and/or displaying measurements of pressure by the transducer in the zone of measurement.

REFERENCES:
patent: 3150521 (1964-09-01), Mackay et al.
patent: 3564907 (1971-02-01), Holcomb et al.
patent: 4951671 (1990-08-01), Coan

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