The Provox System - Atos Medical
Any good stoma cover or filter will act to some extent as an "artificial nose" - will warm and humidify incoming air by absorbing exhaled moisture, which the next incoming breath passes through before entering the stoma and then lungs. The difference in the devices that have been named and accepted by Medicare as "HMEs" is that they seal all around the stoma, so that ALL incoming air must pass through them - none can get in around the bottom or sides - and thus they are often more effective - but not necessarily so. For instance, a Buchanan Stoma Protector, tied snugly around the neck and tucked under the shirt collar, will do a very, very good job of heat-moisture exchanging - not as perfect and complete as an HME, but much, much better than nothing - and as much as a lot of people want or need, especially for the price. Even one of the foam filters under a cotton turtle neck or mock turtle neck will do a pretty good job, as will many of the other types/brands of stoma covers/filters.
Another thing the HMEs do is to force the lungs to work harder to breathe in and out - more like they had to when they had to bring in the air over the tissues of the nose. Again, good stoma covers/filters will do this too - but, again, not quite so completely since they don't seal around the stoma.
Provox® Vega™ Voice Prosthesis - Shop Atos Medical
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Provox® Vega™ - Atos Medical
The second-generation Provox® prosthesis (Provox2) was introduced in 1997. Provox®2 is a low-resistance, indwelling silicone voice prosthesis that can be inserted:
Stimmprothese » Provox HME System
In 1990, the first Provox voice prosthesis was introduced, followed by the second generation, Provox2, in 1997. Provox has made a global impact. Now we proudly present the third generation - Provox Vega voice prosthesis with SmartInserter.
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