Non-contact type tonometer

Details Non-contact type tonometer Non-contact type tonometer

2006-09-05

2006-09-05

Hindenburg, Max F. (Department: 3736)

Surgery

Diagnostic testing

Testing aqueous humor pressure or related condition

Reexamination Certificate

active

07101335

ABSTRACT:
A non-contact type tonometer includes a fluid blowing device which blows fluid against a cornea of an eye of an examinee; an intraocular pressure measurement part which detects a deformed state of the cornea caused by the blown fluid and determines intraocular pressure of the examinee's eye based on a result of detection of the deformed state; a pulsation detection part which detects pulsation of the examinee; a measurement timing determination part which can determine a measurement timing based on the detected pulsation to obtain a predetermined number of results of measurement on the intraocular pressure in synchronization with different phase points in the pulsation; a command signal input part which inputs a command signal for execution of the measurement; and a control part which outputs a control signal for controlling driving of the fluid blowing device based on the determined measurement timing and the input command signal.

REFERENCES:
patent: 3572100 (1971-03-01), Grolman et al.
patent: 5042483 (1991-08-01), Nishio
patent: 5092334 (1992-03-01), Nishio et al.
patent: 5502521 (1996-03-01), Katou
patent: A 63-135129 (1988-06-01), None
patent: A 64-8947 (1989-01-01), None
patent: A 64-8948 (1989-01-01), None
patent: A 1-268540 (1989-10-01), None
patent: A 7-23907 (1995-01-01), None

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