DESMIN

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DESMIN

Product details

A new generation of ophthalmic ultrasound scanners Desmin enables the estimation of physiological and pathological structures of the eyeball and orbit, full automatic and manual biometry and calculation of lens power for intraocular implants. The system works in A, B, and pachymetry modes. Desmin utilizes the newest technologies in electronics and gives to a doctor a powerful and reliable tool.

SPECIFICATION
B-SCAN MODE

B-scan probe:
Scan type	mechanical convex
Transducer Frequency	12 MHz
Diameter of tip	22 mm	0,867”
Focus	20 - 24 mm	0,79” - 0,94”
Depth of exploration	20, 30, 40, 60 mm	0,79” - 2,37”
Frame	55°, 256 lines, 512 samples per line
Frame rate	11 frames/sec
Axial resolution	120 µm
Lateral resolution	300 µm
Weight	165 g	0,364 lbs
Cable length	1500 mm	59”
Amplifier:
Gain	adjustable from 63 dB to 105 dB
TGC	adjustable from 0 dB to 30 dB, five zones
Gain curves	linear, logarithmic
Display:
Display mode	B, B+A, B+B, A, B ZOOM (1,2x – 2,2x)
Image	B-scan with simultaneous selectable vector A-scan
Image orientation	up/down
4 images memory	2 for right and 2 for left eye
Gray Scale Levels	256
Image and data storage	- images with patient’s data and examination parameters stored in the internal flash memory (option), up to 1000 images can be stored - USB external memory - external PC with frame grabber
Processing	smooth image, color coded image generation, brightness, contrast
Post processing Tools:
Measurements	- three sets of distance calipers with variable velocity: for anterior, lens, and posterior measurement - two sets of angle calipers with predefined velocity - circumference, area and volume measurements - text annotations - measurement report
Grey scale curves	Logarithmic, Exponential, Linear, S
Image	dark inverse, bright inverse, positive, zoom 1,2x – 2,2x up and down image orientation
Dynamic reply	Cineloop movie sequence up to 23 seconds, max 256 images, 11 images a second, real time viewing or frame by frame

BIOMETRY

A-scan probe:
Transducer Frequency	12 MHz
Axial resolution	120 µm
Diameter of tip	7 mm	0,275”
Method	contact, immersion
Aiming beam	LED red pointer
Points on X	512
Levels on Y	256
Depth of exploration	30, 40, 60 mm	1,18” - 2,37”
Weight	34 g	0,075 lbs
Cable length	1500 mm	59”
Axial length measurements:
Types of measurement	anterior chamber, lens, vitreous, total length,
Type of eye	Phakic, Cataract, Dense Cataract, Aphakic, Pse/Acrylic, Pse/PMMA, Pse/silicon,
Measurement mode	automatic (precise, fast, advanced algorithm), manual, automatic detection of scleral spike for advanced algorithm
Amplifier	Gain 63 dB to 105 dB, automatic TGC control, digital filter
Color mode	white, yellow, green
Frozen image	auto, auto + save, manual (foot pedal)
Manual correction	adjustable markers; for retina, posterior lens, anterior lens spike
Velocity	adjustable for each segment
Echo detection level	adjustable from 60 to 100% (in 10% steps)
Calibration	semiautomatic, with calibration cylinder
Accuracy	Electronic ± 0,0586mm (±0,0023”), Clinical ± 0,1mm (±0,004”)
Measurements memory	results for 10 scans for anterior chamber depth (ACD) lens thickness (LENS), vitreous length (V.) axial length (AL)
Report Data	Patients Name, P.Id number, Eye examined, K-readings, User Name, Date, Time, Immersion On/OFF, measurement results, IOL calculations
Statistics	average and standard deviation for ACD, LENS, V, AL
IOL formulas	SRK II, SRK T, Holladay, Hoffer-Q, Binkhorst, Haigis, AvgIOL,
IOL Storage Capacity	10 measurements
Calculations	two tables of various IOL calculations 6 various implant powers for desired ametropia value implant values available in increment of: 0,50D

PACHYMETRY

Pachymetry Probe:
Styles	Straight Pachymeter Probe
Frequency	20 MHz ± 10%
Probe Tip Diameter	1,9 mm	0,075”
Acceptance Angle	10º
Method	contact
Weight	21 g	0,046 lbs
Cable length	1500 mm	59”
Corneal thickness measurements:
Measurement range	0,3 ÷ 1,3 mm	for default velocity: 1640 m/s
Measurement resolution	±1 micron
Measurement precision	±1 micron
Operational Modes	auto, manual
Corneal Velocity	1200 ÷ 2400 m/s	default value: 1640 m/s
Delay of measurement	1 ÷ 30 sec
Bias correction	50 ÷ 150%,
Methods	central measurement or cartographic map (automatic continuous scanning)
Cartographic maps	1 5, 13, 21	- Single Reading / One Point - Single Reading / Multiple Points
Intra-Ocular Pressure Correction (IOP)	- two predefined formulas: Shah and Kohlhaas + Ehlers - one user defined formula - value for IOP correction entered manually from tonometer
Statistical Analysis	actual value - average of 512 individual measures for each reading Average Across All Points, Minimum, Maximum Value
General features:
LCD: 12” 1024 x 768 color screen SVGA Integrated intuitive silicone keyboard with trackball, backlighted USB 2GB pendrive external memory Reports archived on USB pendrive or printed out on videoprinter Automatic probe shut off after 10 minutes of continuous running (setting from 3 to 30 minutes) ESR (Enhanced Speckles Reduction) – reduction of granularity of image SAS (Spectral Adaptive System) – automatic resolution adjustment Inbuilt clock (date and time) Foot pedal 5 Customizable User Profiles
Electrical requirements:
Power supply	100/240 V, 50/60 Hz
Power consumption	30 VA
IEC protection class	I	protection level type B, probes type BF
Peripherals:
A probe	pin connector
B probe	pin connector
Pachymerty	mini coaxial
Foot Pedal	jack connector
Printer	coaxial, jack connector
External memory	USB connector
External monitor	coaxial
Optional equipment:
Optional equipment Trolley Videoprinter Internal memory module Frame grabber PC connection
Overall dimensions:
Width	310 mm	12,2”
Depth	155 mm	6,1”
Height	290 mm	11,5”
Weight	5 kg	11 lbs
Standards and norms:
Medical Device Directive 93/42 EEC EMC Directive 89/336/EEC Emission - Class A Compatibility EN 61000 Electrical Safety IEC 601

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