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BOWA SHE SHA smoke evacuation unit
MN009-940-S0 EN
1.
System Description
1.1
Introduction
BOWA SHE SHA smoke evacuation units are intended to evacuate and filter surgical smoke plume
and aerosols created by the interface surgical tools with tissue, examples being lasers,
electrosurgery systems, and ultrasonic devices.
The SHE SHA Smoke Evacuation Units have been designed with a high suction, high flow rate
vacuum motor. The ultra-quiet motor is used to draw the surgical smoke from the surgical site
through the vacuum tubing and into the SHE SHA filter where the surgical smoke is processed by a
series of filters. A single disposable filter is used to simplify the installation and removal during filter
changes. The filter is completely enclosed to protect the healthcare personnel from potential
contamination during filter changes. One BOWA SHE SHA filter contains four different stages within
to capture the smoke plume.
The first stage filtration is a prefilter whose function is to trap and remove gross particulate and
casual fluid.
The second stage filtration is ULPA grade (Ultra Low Penetration Air) filter whose high-tech
patented (U.S. Patent #5874052) design captures particulates and micro-organisms from .1 to .2
microns at an efficiency of 99.999%.
The third stage filtration uses the highest grade virgin activated carbon for the removal and
adsorption of odors and toxic gases produced by strong heating of biological tissue. These harmful
gases may constitute a health hazard to healthcare professionals who are subjected to prolonged
exposure. The activated carbon used in the SHE SHA smoke evacuation systems preferentially
removes toxic organic gases rather than water vapor and provides optimal odor removal.
The fourth stage filtration is an expanded foam used to trap activated carbon fines from migrating
out of the filter.
The electronic controls on the front panel of the SHE SHA Smoke Evacuation System have been
designed user friendly and facilitate unit set up and operation. Please refer to Section 2.0 for
Operating Instructions.
