Forget everything you think you know about dilators.

And especially what the word “stretching” triggers in you: probably discomfort or even pain. Enough of that.

FMS dilators redefine the treatment of vaginismus

FMS stands for “Flexibilisation and Massage System”. This is our term for an alternative, very gentle approach to releasing vaginal tension. Unlike conventional dilators that focus primarily on stretching or spreading, the FMS method relieves spasm through gentle massage. The exceptional effectiveness of FMS dilators in vaginismus is based on their special properties and on a very wide range of sizes and sets that you can tailor to your needs.

Refined functionality and aesthetics

Theros FMS dilators are made of high-quality, shatter-resistant borosilicate glass. This material demonstrably has the smoothest, pore-free surface, so there is no frictional resistance or compression effect as with conical silicone dilators. Each dilator is a one-off, mouth-blown piece and therefore has no seams like industrially manufactured glass dilators. That’s why FMS dilators glide so gently. This unique gliding ability also allows for longer applications without irritating your sensitive areas.

The special streamlined shape in seven variations prevents tissue compression during insertion and ensures maximum comfort.

Certified medical device

Theros FMS dilators are certified medical devices. This ensures safe use and proves their effectiveness.

Form and surface inspired by nature

FMS dilators are not conical but have an elliptical head and a slightly slimmer shaft. This nature-inspired streamlined shape avoids compression and is as smooth-gliding as a fish in water. The virtually frictionless surface of borosilicate glass further supports the exceptional glide. The elliptical head makes it unnecessary to insert the entire dilator to achieve maximum effect. Areas deeper inside the body can thus be targeted without over-stressing the entrance, as happens with conical dilators that have a “thick end”.

All sizes are the same length

In conventional dilator sets, the slimmer dilators are shorter because silicone is too unstable. Therapeutically, that makes little sense, because the slimmer shapes are easier to insert deeply and thus optimally prepare the entire vaginal area. FMS dilators are all the same length – even the slim ones can be inserted as deeply as you like to target areas further inside. And you can guide them precisely, because they are shape-stable yet very gentle. Guide it yourself and feel. You are in control.

The right size of the dilator set

Treating vaginismus requires several dilators – in other words, a dilator set. Individual physical traits and symptoms in vaginismus vary widely. That’s why we offersets in many different sizes. You can also assemble your own custom set. Before the first application, it helps to determine your starting size yourself. That may feel unusual, but it’s the first step towards healing – and not difficult. How to do this is explained under Frequently asked questions about FMS dilators. If that’s not possible for you, start with the smallest suggested set.
FMS dilators are available in 27 sizes from 14 mm diameter. If sizes below 14 mm are required to begin, the FMS principle (flexibilisation through massage effect) would no longer be effective because the difference between head and shaft would be too small. In these cases, we recommend our bougie dilators made of implant steel: the polished, pore-free surface glides extremely well and is highly hygienic; implant steel is 100% biocompatible and suitable even with nickel allergy. With only 1 mm increments over more than 100 mm length, they stretch extremely gently until treatment with FMS dilators from 14 mm can be continued.

Our service: individual dilators from a set can be exchanged if you do not end up needing them and they are still sealed.

Proceed like this: after purchasing your set, first open and try the largest dilator (that will of course not work yet), then step down one size at a time. You will find the size you can insert without difficulty. You won’t need the smaller ones. Since they remain sealed with this approach, you can exchange them.

Preparing for use

Psychological state plays a key role in success. A pleasant atmosphere, calm and enough time are important. A positive mindset and conscious, deep breathing add relaxation. A recommended position is half-sitting, reclined and relaxed, with legs open and slightly angled.

Proper use

For even easier insertion, you can warm Theros® FMS dilators (and the included hypoallergenic lubricant) in a water bath, as warmth relaxes the muscles further. With cellulose filling, FMS dilators can even act as sustainable heat or cooling packs. You’ll find details in theinstructions for use supplied with every purchase. After warming, dry the dilator. Apply a little lubricant to your vulva and to the tip of the dilator. Then place the head of the dilator at the vaginal entrance and try to insert it slowly with a gentle twisting motion.

It’s enough if the head has passed your vaginal entrance. Then relax first. When you gently move the dilator back and forth, its elliptical head creates a wave movement in your vagina. Within a set there aredifferent silhouettes that trigger different stimulations. The FMS method aims to guide your vaginal tissue out of its “default” state of spasm by giving it gentle movement. That’s why, for initial mobilisation, you should choose a very small starting size in which the effect of stretching plays no role.

Progressing through sizes

Once you can move a size back and forth without difficulty, you can try the next size. You can of course set the pace yourself. Continue step by step until you can comfortably accommodate and move the largest dilator in the set. For penetrative intercourse (if that is your goal) to work comfortably, you should reach at least about 36 millimetres.

FMS dilators are also available in much larger sizes if you wish to continue treatment.

Simulating intercourse

The pore-free, extremely smooth borosilicate surface allows longer movements without skin irritation. You can gradually increase the intensity of the back-and-forth movement to get used to the motion of a penis in your vagina. The head of the dilator simulates the glans of the penis. Here too, the advantages of the natural shape of FMS dilators become clear.

Advanced use of FMS dilators

Once spasms are largely resolved, FMS dilators can also be used for advanced training to strengthen the pelvic floor and vaginal muscles. Alternate relaxation and contraction in sync with inserting and removing the dilator. That is: relax consciously while inserting. While withdrawing, hold the head of the dilator for a few seconds using the strength of your vaginal and pelvic-floor muscles. This exercise greatly strengthens the pelvic floor, which supports healthy, pleasurable sexuality as well as continence and overall body stability.

With a well-trained pelvic floor, you can even “embrace” the glans of the penis during intercourse – which can be highly arousing for you and your partner.

Vaginal stents make results last

You can significantly support dilator use with our new vaginal stents: like FMS dilators, they are made of borosilicate glass and share the same properties. Insert them after your session and wear them in everyday life to consolidate treatment results.

Prerequisites for using dilators

Self-treatment with FMS dilators can only help if you are mentally ready and genuinely seek a sexual experience involving penetration. An assumed idea of so-called “normal sex” should not play a role here.

If you still need basic information on vaginismus/vaginal cramp, you’ll find it in our guide.
Under “Special properties of FMS dilators”, all medical application areas are listed, e.g. scarring, neovagina, indurations, lichen sclerosus, haemorrhoids (piles) as well as contraindications.

Free therapeutic advice

You’ll find more information under “Frequently asked questions about FMS dilators”, and our guides cover further specialist topics. If you still have questions, feel free to email me personally. I’ll be happy to reply.

Contact: hsw@theros.de

Hera Schulte Westenberg