OT Bioelettronica quattro User Manual

User Manual v 1.3

quattro

Portable bioelectrical signal amplifier

Read this manual carefully before using quattro

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Index

1 GENERAL DESCRIPTION ......................................................................................................................... 5

2 QUATTRO KIT CONTENT .......................................................................................................................... 6

3 END USER ................................................................................................................................................ 6

3.1 CONTRAINDICATIONS........................................................................................................................................ 6

3.2 SIDE EFFECTS ................................................................................................................................................ 6

4 SAFETY CAUTIONS AND OTHER WARNINGS .......................................................................................... 7

5 SYMBOLS USED ON QUATTRO AND IN THE USER MANUAL ................................................................... 8

6 TECHNICAL SPECIFICATIONS ................................................................................................................. 9

7 DETAILED DESCRIPTION ...................................................................................................................... 11

7.1 CONTROLS, INDICATORS AND CONNECTOR ............................................................................................................ 11

7.1.1 INPUT CONNECTORS ....................................................................................................................................... 12

7.1.2 ON/OFF SWITCH .......................................................................................................................................... 12

7.1.3 USB MINIB CONNECTOR ................................................................................................................................. 12

7.1.4 LEDS INDICATORS ......................................................................................................................................... 13

7.1.5 ANALOG OUT CONNECTOR ............................................................................................................................... 14

8 USE OF QUATTRO .................................................................................................................................. 15

8.1 QUATTRO DIGITAL INTERFACE ........................................................................................................................... 15

8.2 SIGNALS ..................................................................................................................................................... 16

8.3 ELECTRODE ADAPTERS .................................................................................................................................... 16

8.4 PATIENT CONNECTION .................................................................................................................................... 18

9 TROUBLESHOOTING .............................................................................................................................. 19

10 QUATTRO MAINTENANCE AND STORAGE ............................................................................................. 20

11 TECHNICAL CHARACTERISTICS ............................................................................................................ 21

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12 WARRANTY ............................................................................................................................................ 22

12.1 WARRANTY CONDITIONS ................................................................................................................................. 22

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1 GENERAL DESCRIPTION

The quattro is a four-channel amplifier for surface electromyographic (sEMG) signals detected from skeletal muscles with the use
of the surface electrodes.

The quattro allows the detection and recording of the electric signals generated by human body. The signals acquired by the

instrument are amplified, filtered, digitally converted and then transferred to a PC, through Bluetooth or USB connection, for real-

time visualization and storage. A freeware software for real time display and storage, called OT BioLab, has been designed by OT

Bioelettronica and is available for download on the website www.otbioelettronica.it, under the download page.

The quattro is a research instrument designed for clinical research carried out by qualified researchers. It is completely safe for

the patient. The safety is achieved by satisfying the design requirement for devices with an electronic part applied to the patient.

Quattro has different adapters for the connection to different electrode types.

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2 QUATTRO KIT CONTENT

• 1 portable four-channel amplifier quattro;

• cable adapters to connect electrodes to the

amplifier, depending on the customer request;

• 1 reference straps for the wrist;

• 1 USB cable type A-MiniB;

• Electrodes of different sizes, depending on the

customer request;

• 1 quattro user manual.

3 END USER

Quattro allows non-invasive recording sEMG detected by superficial electrodes. The end user must be familiar with the technique

and received a proper training in EMG detection and interpretation.

3.1 Contraindications

Quattro has no particular contraindications when used jointly with personal computers, provided that all the electrical devices

connected to it comply with safety rules and standards concerning grounding and leakage currents.

3.2 Side effects

No significant side effects are known. The materials used for manufacturing all the parts in contact with the patient are

biocompatible. Possible slight cutaneous allergic reactions (e.g. skin reddening) are reduced to a minimum during short duration

of bioelectrical signal acquisitions.

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4 SAFETY CAUTIONS AND OTHER WARNINGS

The use of the multichannel amplifier quattro is absolutely forbidden in the following conditions:

• While other monitoring devices are in use with the patient.

• While electro surgery equipment, short waves or microwaves therapy devices are used.

• By mentally impaired people.

• Whenever the equipment is damaged.

• In proximity of inflammable substances (especially inflammable liquids and gases) or in environments with high concentration

of oxygen.

• On patients carrying life-supporting equipment that might be adversely affected by electromagnetic interferences, such as

pacemakers, etc.

The following cautions should be observed:

• Only use electrodes supplied by the manufacturer: quattro is guaranteed to achieve tested performance only if used with

electrodes supplied by the manufacturer.

• Contact the manufacturer immediately if extraneous materials permeate into the device (liquids, powders, etc.). In case of

hard shocks suffered by the quattro (like a drop to the floor, etc.), verify that no crack or any other kind of damage of the

box resulted from the shock. In case of doubt, please contact the manufacturer.

• The quattro is subject to electromagnetic interference that is not dangerous for the patient (such as electrostatic or

electromagnetic interference generated by electrical motors and other sources). This interference may affect the

measurements of the physiological variables derived from the EMG or EEG signals. These measurements are not meant to

be used for diagnostic purposes, and thus these signal alterations cannot be dangerous for the patient, please always take

into account the presence of noise in your signal processing tasks and evaluations.

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• The connection between quattro and other electrical devices must be done in compliance with the European standard EN

60601-1-1 on medical devices.

• The use of the quattro is restricted to skilled personnel.

• Incorrect measurements can arise when unskilled personnel use the device in presence of strong sources electromagnetic

interference (e.g. strong electromagnetic fields). The presence of interference in the signals is easily recognised by skilled

personnel.

5 SYMBOLS USED ON QUATTRO AND IN THE USER MANUAL

Class BF for circuitry applied to patient.

Read carefully the instruction remarks before use.

Signals input.