Mailing List Archive Mailing List Archive
John Crea <johncrea@de*.co*> wrote:
However, on small boats, the ability to administer high oxgyen
concentrations to divers suffering from DCS/DCI or AGE (if they are
spontaneously breathing) for several hours on a small cylinder of
oxygen is a great idea.
Some time back (March this year) there was a posting to HYPBAR-L about an O2
rebreather developed in Germany for diving first aid use. It was called the
Wennol-system. Donald Ward <D.Ward%DKFZ-HEIDELBERG.DE@VM*.TA*.AC*.IL*>
posted
a lengthy description of it to the list at the time.
This wasn't vapour-ware. He included prices, his impressions of its use and
the info about the manufacturer.
Has anyone heard of this product outside Germany? I'll include below an extract
from Donald's posting.
Greg Ryan gregr@cs*.su*.oz*.au*
------
Donald Ward <D.Ward%DKFZ-HEIDELBERG.DE@VM*.TA*.AC*.IL*> wrote:
The Wenoll-system.
First a little blurb from there ad:
O2 recycling
The Wenoll-system was developed in cooperation with internationally known
doctors of dive medicin. It is the first O2 circultory system for treatment of
DCS. A special system of valves recirculats the aprox. 95% of unused O2
back to the victim, insted of venting it to the atmosphere. This means that
except for spcific aplacation requirements you use just a small portion of the
O2 that you would need in an open system, do cover the treatment during
transport from the dive site. The 2-liter-tank provides O2 for up to 6 hours.
A few general facts:
The case consists of:
Set of hoses with T-conector
CO2 absorber with 2m conection hose for O2 tank
Reserve bag ? (This is where the O2 goes when the victim exhales)
Mask w/ band
Artifical nose
Mouthpiece
Nose clamp
Overpresure valve Adjustable from 0-20mbar, set to 4mbar
Short user info. in German
Instructions in several languages
2-liter O2 tank with medical grade O2
Special Regulator
Cost:
For everything including the case- 866 DM
O2 tank 200bar with O2 - 273 DM
Special Reg. - 324 DM
Everything except tank & Reg. - 382 DM
As above without case - 292 DM
CO2 Absorber with conections - 84DM
Artifical nose - 11,50 DM
You need to replace the Artifical nose after every use. It is a filter that
heats and moisturizes the incoming O2.
The CO2 Asorber shuld be replaced after aprox. 4 hours of use. It has an
indicator that changes color when replacement in needed.
My impressions, what I learned:
This is a very easy to use system. When I was introduced to the system they
had one person go up and put it together without any instructions, except for
what is on the inside of the lid of the case. He had it attached and working in
about 7 mins. With experiance I think that you could get it setup on a victim
in less then 3 mins. All conections are color and size coded so that you
can't put it together wrong. The only two things that you have to be carefull
about while setting up and starting are the set of the mask, and flushing the
system correctly. If the mask isn't air tight, you don't have 100% O2, and
if you don't flush correctly you also leave N2 in the system.
The special regulator is set up with a variable pressure control, that is used
to control the standard flow of O2 into the system. This is 0.5l/min. It also
has a 'flush' button that supplies 15x the setting on the standard flow.
This is used to flush the system. The system is flushed when starting and
every 15 - 20 mins. while in use. (This is from memory may be longer between
flushing.)
The doctor that introduced the system to us said that in tests, the system
supplied 100% O2 for the 6 hours when used correctly. The mask, and the
flushing procedure are the most important aspects, and the source of most
all problems in use of the system.
The system seems to be a very good solution to the problem of O2 administration
in the field. The case has two hard foam pieces to hold everything in place.
These pieces are not the best for field use. This is suposed to be changed
soon.
There is a new case that should be coming out this year that includes a
general divers first aid kit. I don't know anything about this yet. I was
just told that it is being developed.
The company:
EMS GmbH, Elektro-Mechanisch System
Waldstrsse 2
D-8521 Moehrendorf ( the post number here should be 5 digets. )
Tel: 09131/440420
Fax: 09131/47468
Hope that this helps.
don
Navigate by Author:
[Previous]
[Next]
[Author Search Index]
Navigate by Subject:
[Previous]
[Next]
[Subject Search Index]
[Send Reply] [Send Message with New Topic]
[Search Selection] [Mailing List Home] [Home]