Non-thermal varicose vein treatment

NON-THERMAL ABLATION · VENASEAL

VenaSeal for Varicose Veins

A varicose vein treatment that uses no heat.
A medical adhesive is used to close the affected vein.

Non-thermal treatment

Medical adhesive

Ultrasound-based assessment

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What is VenaSeal?

VenaSeal

Closing the affected vein with medical adhesive instead of heat.

Non-Thermal · Adhesive Closure

VenaSeal is a non-thermal vein closure treatment in which a medical adhesive is injected into the affected vein to close it.

Extensive tumescent anesthesia is not always required, so depending on the patient's condition it may be considered as a way to reduce the anesthetic burden.

Learn more about varicose veins →

Catheter delivering adhesive during VenaSeal treatment

Adhesive injection under ultrasound guidance

How it works

Adhesive instead of heat
closes the refluxing vein.

After duplex ultrasound identifies where and how far the reflux extends, a thin catheter is placed inside the vein and the adhesive is delivered to the necessary segments under ultrasound guidance.

The adhesive closes the affected vein, and over time the closed vein is gradually absorbed or stabilizes together with the surrounding tissue.

Because the treatment uses an adhesive, allergic reactions, inflammatory responses and the condition of the vein must also be considered.

See our treatment criteria →

Illustration of how VenaSeal adhesive closes the vein

How the adhesive closes a refluxing vein

More than the veins you can see,
the direction of flow inside matters

When it may be considered

If these symptoms keep returning, check whether venous reflux is present.

Symptoms alone do not mean VenaSeal 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

Diagnosed with varicose veins before, but treatment has been postponed

Before treatment

More than the veins you can see,
We check the flow inside first.

A duplex ultrasound is required before VenaSeal. It shows whether VenaSeal is suitable or whether another treatment fits better.

Whether the venous valves are refluxing

Where the reflux begins

Vein diameter and length

How tortuous the vein is

Distance from skin and nerves

Whether adhesive use requires caution

VenaSeal medical adhesive dispenser

Features of VenaSeal

Key features of VenaSeal for varicose veins

Non-thermal treatment

A varicose vein treatment that uses no thermal energy.

Medical adhesive

Adhesive is injected inside the affected vein to close it.

Potentially less anesthesia

Extensive tumescent anesthesia is not always required, which can reduce the burden.

A different approach to compression

Whether and how long compression stockings are worn after treatment depends on the patient's condition and the doctor's judgment.

Ultrasound-based assessment

Suitability is decided after checking the site of reflux, vein diameter and vein shape.

It depends on the vein

It is not suitable for every case of varicose veins; the decision is based on the examination.

Treatment process

From examination to recovery guidance, step by step.

STEP 01

Duplex ultrasound

Check reflux location and extent, and vein diameter

STEP 02

Treatment plan

Assess suitability for VenaSeal and compare with other options

STEP 03

Local anesthesia and catheter insertion

Catheter position confirmed inside the vein under ultrasound

STEP 04

Adhesive injection

Adhesive is delivered to the necessary segments to close the vein

STEP 05

Recovery and follow-up

Compression care, daily-life guidance, and follow-up ultrasound if needed

Comparing treatments

How VenaSeal 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 how the patient may respond to the agents used.

VenaSeal

Closes the vein with medical adhesive

Non-thermal, adhesive-based

Radiofrequency

Radiofrequency thermal energy

Thermal

Laser

Laser thermal energy

Thermal

ClariVein

Rotating wire plus sclerosant

Non-thermal, MOCA type

Sclerotherapy

Closes the vein by injecting a sclerosant

Mainly for small branch and spider veins

Before the name of a treatment,
check the flow in your own veins

Cautions and limits

VenaSeal is not right for every vein.

Because VenaSeal uses a medical adhesive, the possibility of hypersensitivity or an inflammatory reaction to the adhesive must be checked.

Hypersensitivity or inflammatory reaction to the adhesive must be checked in advance

Tightness, bruising, temporary pain, redness, itching or a foreign-body sensation under the skin may occur

If the vein is very large or the reflux is extensive, another treatment may be more appropriate

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 VenaSeal

Compression care and daily-life guidance after treatment

Our approach at Bluesky Phlebology

We look closely at small symptoms and subtle changes in the veins.

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

3,000⁺

Vascular surgery experience

30^years

University hospital professor

1^doctor

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 VenaSeal, radiofrequency, ClariVein and conservative care

Guidance on recovery and daily care after treatment

Attention to small symptoms and subtle changes

Dr. Bang Jeong-hee

Vascular surgery specialist · MD, PhD · Former university hospital professor

Frequently asked questions

VenaSeal for Varicose Veins
Frequently asked questions

When is VenaSeal suitable for varicose veins?

It can be considered when reflux is confirmed and the diameter, shape and location of the vein fit the conditions for VenaSeal. Suitability is determined after a duplex ultrasound.

Does VenaSeal use heat?

No. Unlike laser or radiofrequency, VenaSeal does not use thermal energy; it uses a medical adhesive to close the affected vein.

Do I have to wear compression stockings after VenaSeal?

If only VenaSeal was performed, stockings are not mandatory, because the vein is closed with a medical adhesive. However, if sclerotherapy or phlebectomy was performed at the same time, or if there is swelling, bruising or discomfort after the procedure, wearing them for a period may be advised.

Is VenaSeal possible for every case of varicose veins?

No. If the vein is too large, the reflux too extensive, the shape of the vein unsuitable, or if adhesive use requires caution, 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.

Can varicose veins come back after VenaSeal?

The course of a treated vein differs from person to person, and reflux can develop in other veins over time. If your symptoms change after treatment, it is best to have them checked again.

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 — VenaSeal, radiofrequency or ClariVein. It starts by finding where and how much the veins in your legs are refluxing, and then deciding the direction that fits.

Book a visit

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

Korean Society for Vascular Surgery →