Ottobock 743L30-230/110 ­LaserLine Instrucciones De Uso página 12

• Make sure that the beams – if possible – will not reach the level of the patient's eyes. You
may achieve this for example by coming closer to the patient with the apparatus levelled.
• If possible, project to the patient from dorsal or lateral aspects.
• Keep a minimum distance of about 1 m – if possible. See also above: minimum distances
at corresponding radiation times.
• Make sure, that the beams do not meet reflecting objects (mirrors, bright surfaces).
• Do not place optical equipment (lenses, concave mirrors) into the radiation channel. Such
equipment may change the beam (focussing) in a way, that it will become more dangerous,
and thus the apparatus will have to be assigned to a higher laser class.
• Inform the patient and other attending persons about the danger of looking into the beam.
6 Prerequisites for Correct Application
Please make sure that the projection of light is "vertically" arranged on the object. This can be
best ensured in the following way:
• The LaserLine must be horizontally aligned by means of a longitudinal water level (6) and
a cross water level (7), i. e. both water bubbles should be in the center of the correspon-
ding water level.
• The surface of the object to which the light hits, should be vertically positioned in the room,
and the LaserLine should be "vertically" placed in front of it, i.e. the projection plane and
the main direction of projection must be vertically positioned in relation to each other.
If these two requirements are met, the following may be stated:
• The lower laser projects a plumb line to the plane of the object.
• If the angle scale of the upper laser is in the "zero" position, this laser also projects a plumb
line to the object. The two lasers then project parallel lines onto the object. The distance
between the parallel lines can be changed by the antagonistic spring control (9).
• If the upper beam is turned in relation to the lower one, the angle between the beams is
displayed at the angle scale on the rotation button (8).
7 Range of Application / Proper Use
In the following the different possibilities of application are described in more detail:
7.1 Initiating Steps
For most applications first the following steps are to be executed:
• Make sure that the patient takes a normal posture, or, in the same way, place the object
(prosthesis, orthosis, plaster model, etc.) perpendicularly within the room.
• LaserLine should be accurately situated laterally or dorsally (depending on the kind of
application) in front of the patient or the object – at a distance of approx. 1 m.
• Turn the stand until the direction of laser projection will vertically meet the patient or the object.
• Adjust LaserLine horizontally and turn the upper laser to the "zero" position using the ro-
tation button (8).
• After making sure that the patient will not look into the beams, switch on both lasers.
• Using the antagonistic spring control (9), move the lower laser until both beams are con-
gruently arranged.
The following adjustments of the apparatus are for different types of application.
12 | Ottobock 7433300230/110 3aser3ine