Gilras GRU-5000 A, Руководство по эксплуатации

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Chapter 1 Introduction
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Chapter 1 Introduction
1.1 General Description
The GRU-5000 A Ultrasonic Biometer for Ophthalmology is an ultrasonic measuring instrument
based on pulse reflection. It comprises A Mode Eye Axis Biometric Parameter Measuring Unit (A
Biometer).
The A Biometer consists of a 10MHz A-Scan probe (probe model: Prb1000A/10-C) and an axis
biometric parameter measuring unit. The axis is usually divided into three segments: anterior
chamber, lens and vitreous body. Since the tissue within the eye varies in different areas, the
acoustic velocity through these areas is also different. The summation of these three segments
(ACD + LENS + VITR) provides the axial length (AL). Based on the interface reflections of these
three different tissues, the ultrasonic A-biometry measures the transmitting time of ultrasound
through each tissue and calculates the length of each segment to finally get the axial length.
The GRU-5000A has a built-in Thermal Printer, used to print out patient information, A-Scan
measuring waveform, IOL calculating parameter and result.
The built-in memory of the GRU-5000A can store up to 180 patients' records.
1.2 Intended Use
The GRU-5000A is intended for axial biometric parameter measurement in clinical ophthalmology.
1.3 Intended Location of Use
The GRU-5000A is suitable to be applied in hospitals and ophthalmology clinics.
As the foot switch's protective degree against ingress of liquids is IPX1, it is not suitable to be used
in operating room and other locations where it is easy to splash liquid.
1.4 Contraindications
It is prohibited to use the device on patients with eye trauma, inflammation or infection.
1.5 Expected Service Life
Based on the experience of products sold (and considering technology update cycle), as well as
the aging of the major part
–
transducer will probably reduce the basic performance, the product's
expected service life is determined as five years according to the normal usage of six hours each
working day. (Service life may extend if the major parts, like probe, are returned to manufacturer
for update.)
1.6 Software Version
V1.0.0.10