Theory Of Operation; Pneumatic Circuits; Electronic Circuits; Start Pump - IC Medical CRYSTAL VISION 450D Operating And Installation Manual

THEORY OF OPERATION

The CRYSTAL VISION ®
effectively remove smoke during surgical procedures and to
eliminate problems associated with other types of smoke
evacuators. The CRYSTAL VISION
when the surgeon activates a smoke-producing device and it
turns itself off when it is not needed to remove surgical
smoke. The Model 450D has two flow ranges to provide
optimal performance under a variety of surgical conditions.
In addition, the evacuator notifies the operator of conditions
that may limit the effective removal of smoke.

PNEUMATIC CIRCUITS

Surgical Smoke collection devices are used to remove
smoke from the surgical site and deliver it through the fluid
trap and into the SAFEGUARD BLUE
ULPA Filter with Built-in Fluid Trap rated 0.1-micron input
filter. The filtered air then travels from the SAFEGUARD
®
BLUE Hydrophobic ULPA Filter with Built-in Fluid Trap
, through either the OPEN or LAP pneumatic circuits, into
the pump, then through the output charcoal 0.5-micron filter
and finally delivered back into the operating room.

ELECTRONIC CIRCUITS

START PUMP:

There are three ways to start the pump: trigger a remote
sensor, push the MANUAL button on the front panel, or an
OVER PRESSURE condition.
1. Remote Sensors: Remote sensors are attached to the front
panel at the ESU or LASER plug.
electrically identical and can be used interchangeably
with either sensor.
a) The LASER sensor consists of an infrared
transmitter and receiver that are carefully positioned on
a foot switch that activates a surgical laser. Placement
is critical because it is very important to position the
infrared beam so that it is interrupted at the first
movement of the foot pedal.
evacuator is started before the laser actually activates
and the air stream is already moving when the laser
beam first strikes tissue.
b) The ESU sensor is placed on, or near the input
connector of the electrocautery pencil cable and the
other end is plugged into the evacuator front panel.
Activation of the ESU pencil is detected by the sensor.
The remote sensor (ESU or Laser) sends a trigger,
through the front panel board, to the Master Board, and
then to the motor controller.
2. The Manual button also starts the pump if it is pushed.
This push button is used during procedures to activate the
pump if a remote sensor is not used with all of the active
smoke producing devices. The switch can also be used
when very low flow insufflators are used during
laparoscopic procedures. It is helpful in this circumstance
Model 450D was designed to
®
automatically turns on
®
Hydrophobic
Both plugs are
In this manner, the
because increasing the flow rate would deflate the
pneumoperitoneal pressure. Instead, the flow TIME can
be set to 30 seconds and if additional purging is required,
the MANUAL button will continue the evacuation.
3. An OVER PRESSURE condition: When the evacuator
is in the LAP
pneumoperitoneum is monitored.
reaches approximately 27 mmHg, a light alert is activated.
If the pressure continues to build to 30 mmHg, the pump
is started and it continues to operate until the pressure
drops below 30 mmHg. The pressure is not monitored in
OPEN Mode because this range is not intended to be used
during laparoscopic procedures.

STOP PUMP:

When the smoke producing device is deactivated,
MANUAL button not pressed, or the OVER PRESSURE
condition is not present, the pump will continue to operate
for the amount time shown on the TIME SETTING on the
front panel.
Whenever an OCCLUSION condition is sensed, the pump
will stop. After a brief period of time, if any start condition
exists, it will attempt to restart to see if the occlusion has
been cleared. If it has not, the pump will again stop. This
will continue until the occlusion is cleared, or until TIME
expires.

TIME SETTING:

The TIME SETTING buttons are used to adjust the amount
of time that the evacuator continues to pump after the active
smoke producing device (laser, ESU, etc.) is deactivated.
This lag in the deactivation of the evacuator is necessary in
order to remove any residual smoke from the surgical site.
The control is variable from approximately 2 to 30 seconds.
21
Mode, the pressure
When the pressure
in the