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Non-thermal varicose vein treatment
MECHANOCHEMICAL ABLATION · CLARIVEIN

ClariVein Treatment

MOCA · Non-Thermal Treatment

A varicose vein treatment that uses no heat.
Rotational stimulation and a sclerosant are used together to
close the affected vein.

Non-thermal treatment
Rotating wire plus sclerosant
Ultrasound-based assessment
Move your cursor and the light follows
01
What is ClariVein?

ClariVein

A non-thermal vein treatment that uses no heat.

MOCA · MECHANOCHEMICAL ABLATION

With ClariVein, a rotating catheter stimulates the inside of the vein while a sclerosant is delivered at the same time, prompting the affected vein to close.

It may be considered as a way to reduce the anesthetic burden and the chance of thermal injury, but suitability depends on the vein diameter and the extent of reflux.

Learn more about varicose veins →

See our treatment criteria →

Illustration of the MOCA mechanism: rotating ClariVein catheter with sclerosant
Catheter insertion under ultrasound guidance
02
How ClariVein works

Rotational stimulation and a sclerosant are used together.

Where radiofrequency and laser use thermal energy, ClariVein uses rotation and a medication instead of heat. For veins close to the skin or next to nerves, it can be one of the options, depending on the state of the vein.

01
Rotational stimulation (mechanical action)
The catheter tip rotates and gently stimulates the inner wall of the vein. This physical action helps the vein close.
02
Sclerosant delivery (chemical action)
At the same time, a sclerosant is delivered so the affected vein gradually closes. No thermal energy is involved.
More than the veins you can see,
the direction of flow inside matters
03
When ClariVein may be considered

With these symptoms, venous reflux should be checked.

Having these symptoms does not mean ClariVein is needed. In early stages, or when reflux is not clear, conservative care may come first.

Legs feel heavy and swollen as the day goes on
Recurring tightness or numbness in the calves
Frequent leg cramps at night
Discomfort that worsens when standing or sitting for long periods
Visible blue or twisting veins
A feeling of heat, itching or a dull ache in the legs
04
Features of ClariVein

Key features of ClariVein for varicose veins

ClariVein is a non-thermal treatment that uses no thermal energy. Depending on the state of the vein, it is one of the options that can be chosen alongside radiofrequency or VenaSeal.

01
Non-thermal treatment — no thermal energy
02
Combined action: rotation plus a sclerosant
03
Wide-area anesthesia is not always required
04
Catheter position checked in real time with ultrasound
05
An option that can sit alongside radiofrequency and VenaSeal
06
Suitability depends on the state of the vein
05
Comparing treatments

How ClariVein differs from other treatments

Rather than declaring one treatment better, the right method depends on where and how severe the reflux is, the vein diameter, and the distance from skin and nerves.

Treatment
Mechanism
Characteristics
ClariVein
Rotational stimulation plus sclerosant delivery
Non-thermal, combined mechanical and chemical action
Radiofrequency
Radiofrequency energy contracts and closes the vein wall
Thermal treatment at a controlled temperature
Laser
Laser thermal energy through an optical fiber
Thermal treatment, closes the vein from within
VenaSeal
Closes the vein with medical adhesive
Non-thermal, uses no heat
Sclerotherapy
Closes the vein by injecting a sclerosant
Mainly for small branch and spider veins
06
The ClariVein treatment process

From examination to recovery, step by step.

STEP 01
Duplex ultrasound
Confirm the location and extent of reflux, and the diameter and shape of the vein
STEP 02
Treatment plan
Assess suitability for ClariVein and compare with other options
STEP 03
Local anesthesia and catheter insertion
Catheter position confirmed inside the vein under ultrasound
STEP 04
Rotating wire plus sclerosant
Mechanical stimulation and the sclerosant close the vein
STEP 05
Recovery and follow-up
Compression care, daily-life guidance, and follow-up ultrasound if needed
Before the name of a treatment,
check the flow in your own veins
07
Cautions and limits

ClariVein
is not right for every vein.

Because ClariVein uses a sclerosant, the possibility of a hypersensitivity reaction to the medication must be checked. If the vein is very large or the reflux extensive, another treatment may be more appropriate.

Possible hypersensitivity to the sclerosant must be checked in advance
If the vein is very large or the reflux extensive, another treatment may be more appropriate
Bruising, tightness, temporary pain, skin colour change or an inflammatory reaction may occur after treatment
History of thrombosis, drug allergies and pregnancy must be checked
New problems can develop in other veins after treatment, so regular check-ups are needed
Wearing medical compression stockings during recovery after ClariVein
Compression care and daily-life guidance after treatment
08
Our approach at Bluesky Phlebology

We look closely, even at small symptoms.

ClariVein is one of the options we consider when it fits the patient's veins. We review it together with radiofrequency, VenaSeal, sclerotherapy and conservative care to find the right direction.

3,000+
Vascular surgery experience
30years
University hospital professor
1doctor
Dedicated, focused care
High-resolution duplex ultrasound to locate and grade the reflux
A clear explanation of which veins need treatment and which can be watched
Choosing appropriately between ClariVein, radiofrequency, VenaSeal and conservative care
Guidance on recovery and daily care after treatment
Attention to small symptoms and subtle changes
Dr. Bang Jeong-hee, ClariVein specialist at Bluesky Phlebology
Dr. Bang Jeong-hee
Vascular surgery specialist · MD, PhD · Former university hospital professor
09
Frequently asked questions

ClariVein — frequently asked questions

Which varicose veins is ClariVein suitable for?
+
It can be considered when reflux is confirmed and the diameter, shape and location of the vein fit the conditions for ClariVein. Suitability is determined after a duplex ultrasound.
Does ClariVein use heat?
+
No. Unlike laser or radiofrequency, ClariVein does not use thermal energy; it closes the affected vein with the rotation of the catheter combined with a sclerosant.
Is ClariVein possible for every case of varicose veins?
+
No. If the vein is too large, the reflux too extensive, or the shape of the vein unsuitable, another treatment may be more appropriate.
Can I return to daily life right after treatment?
+
In many cases a relatively quick return is expected, but recovery varies with the extent of treatment and the patient's condition.
Which is better, radiofrequency or ClariVein?
+
It is hard to say one is better for everyone. Radiofrequency uses heat, while ClariVein uses none. The right method is chosen from the location and diameter of the vein, the extent of reflux and the distance from nerves.
Visit information

If your leg symptoms keep returning,
before choosing a treatment by name
check the flow in your veins.

Treating varicose veins does not start by choosing a name — ClariVein, radiofrequency or VenaSeal. It starts by finding where and how much the veins in your legs are refluxing, and then deciding the direction that fits.

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What are varicose veins? → Treatment criteria → Vein stripping →