HSD WellStore, Manual

Page: 25 / 80

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23
ENGLISH
CLEANING AND DISINFECTION
Before each action, set the ignition switch to "0" (zero) and disconnect the
appliance from the power outlet.
Handle the treatment head with care. Careless handling can affect its
characteristics.
!
Caution
Remove the dust on the outside of the appliance using a soft cloth
moistened with water, or with an aqueous solution consisting of 75%
water and 25% denatured ethyl alcohol.
CLEANING THE TREATMENT HEAD
CLEANING THE APPLIANCE
Disconnect the treatment head from the device and remove any residual
cream or gel using a soft cloth moistened with water, or with an aqueous
solution consisting of 75% water and 25% denatured ethyl alcohol. After
cleaning, dry well and remove any residual moisture from the treatment head
before storage or subsequent use.
!
Caution
It is forbidden to use abrasives or chemicals for cleaning.
To disinfect the treatment head, use a cotton ball or gauze, lightly soaked
in a non-irritating, alcoholic antiseptic solution (such as the type used for
minor abrasions or grazes, available in pharmacies).
It is forbidden to use abrasives or chemicals for cleaning. When cleaning,
avoid contact between the connector and the cleaning solution used.
!
Caution
DISINFECTION OF THE TREATMENT HEAD
It is forbidden to use abrasives or chemicals for disinfection. During
disinfection, avoid contact between the connector and the antiseptic
solution used. Follow the directions and precautions for use provided by
the manufacturer of the antiseptic solution.
!
Caution
At each cleaning and / or disinfection of the treatment head and in any
case at the end of each treatment it is necessary to check that it does not
have cracks or fissures that could allow the entry of conductive liquid. If
the treatment head is cracked or cracked, replace it immediately.
CONTROL OF THE TREATMENT HEAD
The replacement ultrasound head can only be obtained from HSD S.r.l.
The use of an ultrasound head other than that indicated can be
dangerous.
!
Caution
Accessories and spare parts
For any orders for accessories or spare parts, consult the accessories
catalog, requesting it by e-mail or by consulting the manufacturer's
website.
On the back of the device and on the ultrasound head, identification
plates are affixed with the technical data to be communicated to the
Authorized Service Center, the Manufacturer or the Dealer in the event of
a request for accessories or spare parts.
!
Caution
Ultrasound is defined as an acoustic vibration with frequencies above the
audible limit (i.e. greater than 20,000 Hz).
Ultrasounds for therapeutic purposes were introduced and systematically
studied in the period following the Second World War. In Italy it spread
immediately and many of our scholars have contributed significantly to
experimental and clinical research in this field.
The ultrasounds spread in the form of compression-decompression waves with
back and forth motion of the particles of the transmission medium, parallel to the
direction of the propagation waves.
Ultrasounds are artificially produced through the piezoelectric effect using either
a quartz or a disc of ceramic material. By applying electrical loads on the faces
of a quartz sheet, the crystalline is compressed, reversing its direction and
expanding. By subjecting the quartz to an alternating electric field, therefore, an
alternation of compressions and expansions of the crystal is obtained with the
production of a series of vibrations used in therapy.
When ultrasound waves travel through the tissue, they lose a certain portion of
their energy: this is a process known as attenuation. The attenuation in the
fabric is produced by many mechanisms: absorption, the divergence of the
beam and the deflection. Absorption is the main cause of ultrasound attenuation.
The ultrasound energy is absorbed by the tissue and is eventually converted into
heat. For most tissues, attenuation increases with increasing frequency, so a 1.0
MHz signal would penetrate deeper than a 3.0 MHz signal, due to the lower
attenuation in the tissue. Beam divergence is the degree to which the beam
disperses from the transducer. The divergence of the beam decreases with
increasing frequency and therefore a higher frequency signal has a more
focused beam. Deflection includes the process of reflection, refraction and
dispersion.
An ultrasound therapy device mainly consists of an alternating current generator
(typically 1 MHz and / or 3 MHz) which supplies, via cable, an emitting treatment
head in which a transducer (piezoelectric disc or aluminum foil is inserted)
quartz) which converts electrical energy into mechanical energy (acoustic
vibrations) which are transmitted to the tissues.
Ultrasound therapy
The interaction of ultrasound with biological tissues produces mechanical,
thermal, chemical and cavitation effects.
Mechanical effects: the mechanical action is due to the movement of the
particles of the tissues crossed by the ultrasonic wave. The pressure variations
that are produced are able to determine a movement of liquids in the presence
of inhomogeneity (microcurrents), an increase in membrane permeability and
the disruption of the tissues by separation of the collagen fibers.
Thermal effects; the thermal effect essentially depends on two factors: the
absorption characteristics of the biological medium and the reflection of energy
at the interface between tissues with different acoustic impedance.
The passage of ultrasounds through the “soft” tissues creates an increase in
temperature due to: - absorption linked to viscosity, - absorption due to thermal
conductivity and - chemical absorption.
Chemical effects: the chemical action with modification of the local pH and
permeability of cell membranes and with molecular changes is caused by the
considerable acceleration forces to which the tissue particles are subjected to
the passage of the ultrasonic wave.
Cavitation effects: cavitation is the ability of ultrasound to generate small
dissolved gas bubbles in a fluid with subsequent increase in size and possible
explosion of the bubbles. From a histological point of view, the result is an
irregular cell destruction with petechial type haemorrhage. At therapeutic
dosages, destructive reactions such as hemolysis would occur only in the
presence of low cellular concentration and low viscosity of the medium, such as
at the level of the eye and uterus.
Mechanism of action