The Ultravision™ System - Principle Of Operation - alesi ULTRAVISION Manual De Usuario

Item
Battery
Patient return adaptor (solid)
Patient return adaptor (split)
Battery recharging station
Mains Converter
Replacement reusable items are available from Alesi Surgical or its local distributors.
The Ultravision™ system – principle of operation
The Ultravision system removes the particulate material that is created by energy-based instruments during laparoscopic
surgery from the visual field. It achieves this by electrostatic precipitation, a process that transiently charges the particulate
matter and causes it to be rapidly precipitated inside the peritoneal cavity as it is created. The system has been specifically
designed to improve the clarity of the visual field and to minimise the release of particulate matter and gases into the operat-
ing theatre environment during laparoscopic surgery.
The Ultravision system requires a patient return pathway, similar to monopolar diathermy but at 5 orders less current magni-
tude. The system has been designed such it can be configured in two ways, depending upon the type of cutting instrument
that is used:
With monopolar instruments that require a patient return electrode
The Ultravision system is provided with a Patient Return Adaptor that allows the electrosurgical unit and the Ultravi-
sion generator to share a single patient return electrode with the monopolar instrument (Figure 1).
With bipolar and ultrasonic cutting instruments that do not require a patient return pathway
The Ultravision patient return socket in the generator allows a standard patient return electrode to be used and con-
nected directly to the Ultravision generator (Figure 2).
The Ultravision system is not supplied with a patient return electrode but has been designed to be compatible with patient
return electrodes that have an "international" style connector. Please contact Alesi Surgical or your local distributor if you ex-
perience any problems with your preferred patient return electrode.
Figure 1: Ultravision™ set up for use with instruments that do
require a patient return electrode
The following components are required for Ultravision to function and are supplied with the system:
1. The generator unit
The generator unit is the source of the high voltage at low power. The output power is regulated automatically and cannot be
adjusted manually. The unit is operated with power provided by a removable and rechargeable battery or an optional.
mains converter.
Approximate number of uses before requiring replacement
First to occur of 2 years, 200 charging cycles at 20°C (68°F) or 1 year from last recharge
at 20°C (68°F).
500 mating cycles with Ultravision generator and electrosurgical generator
500 mating cycles with Ultravision generator and electrosurgical generator
1000 mating cycles with Ultravision battery
100 mating cycles with Ultravision generator
Figure 2: Ultravision™ set up for instruments that do
not require a patient return electrode
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