Posted by
duka on Thursday, January 07, 2010 10:23:46 PM
Medical facilities have always had the problem of how to sterilize their
equipment for reuse or disposable. The modern dental
autoclaves implemented today are a far cry from past methods
used, and they are the best means of sterilizing materials either before reuse
or disposal. When you are looking for autoclaves for your facility, there will
be several factors to take in to consideration. You will also need to know the
proper way to use them in order to ensure that the equipment placed into it is
fully sterilized.
One hundred years ago, surgical instruments were just tossed into a vat of
boiling water for several minutes before reuse. Things have changed in the last
century. Today, most equipment required for patients is single use, so that
there is no need to find a means of sanitizing it before applying the same piece
to another patient. There is though, the problem of disposal. While in the 20th
century most hospital waste was just burned, incineration is not an
environmentally friendly tactic. Prior to throwing away used equipment, it must
be sterilized to prevent landfill contamination. This is why every facility that
uses medical equipment needs several autoclaves.
The way these necessary pieces sterilize is through the use of highly heated
steam. Water can only reach 100 degrees Celsius, but steam can get up to 120
degrees Centigrade or higher. In fact, the hotter the steam inside the
dental
autoclave, the less time the equipment must be in it in order
to kill all microbes such as viruses, bacteria, and prions. These temperatures
are achieved by removing the air from the machine, which is not as effective at
sterilization as steam is. There are several means of taking the air out of the
unit, among these are the use of a vacuum pump, gravity, or alternating between
pressurizing and depressurizing the chamber. Once the air is removed, the steam
inside can begin its cleaning task. Depending upon the temperature, the length
of time to achieve sterilization can vary.
In order to ensure sterilization, there will be some things that must be done
and checked by the technician. The use of autoclave tape is one means of
verifying that the equipment reached high enough temperatures for the right
length of time to kill surface microbes. Autoclave tape is a highly sticky tape
that is applied to the equipment. It is able to withstand the steam inside the
unit and will change colors when the equipment is properly sterilized. The
technician must also be certain to place the equipment in the machine with ample
space around the pieces. This will enable the hot steam to come into contact
with all of the surfaces. Another thing to ensure that the autoclave is working
is to purchase a model with pressure and temperature gauges on the exterior of
the machine. These must be
easy to read from the outside of the unit during
use.
Once the pieces inside the autoclaves are processed, they can then either
reliably be reused or safely thrown away without fear of landfill contamination.
The safety of patients and the community rests in the functioning of the
autoclaves and their task in sanitizing used medical equipment.