ThermaVein: thermocoagulation for superficial vascular lesions
ThermaVein is a medical device that seals fine vessels at the skin surface using a 4 MHz high frequency current, delivered through a 0.3 mm insulated probe applied to the skin. It is built for aesthetic clinics and dermatology practices treating facial thread veins, broken capillaries, cherry angiomas, milia and skin tags. It solves a specific problem for which intense pulsed light and vascular laser are either not precise enough or restricted by the patient's skin type.
Four things that define the method
Thermocoagulation is not a weaker form of laser. It is a different physical mechanism, with different limits and different advantages.
4 MHz current
High frequency, low intensity energy delivered at a single point in the vessel wall rather than across surrounding tissue
0.3 mm insulated probe
Sterile single-use probe, insulated along its length, applied to the skin surface without an incision
Skin type independent
The target is the vessel wall, not melanin, so darker skin types and recently tanned skin can be treated
Result within the session
The vessel disappears visually as the energy is applied, which shortens the path from consultation to decision
How thermocoagulation works
The procedure has three moments, and understanding them explains why the result is visible straight away.
1. Emptying the vessel and applying energy
The operator applies gentle pressure to empty the vessel segment of blood, then rests the insulated probe on the skin surface above the vessel. The probe does not pierce the skin. On command, the device releases a short burst of 4 MHz current concentrated at the probe tip. Because the rest of its length is insulated, the energy does not dissipate into the epidermis.
2. Sealing the vessel wall
The heat generated locally denatures the proteins in the vessel wall, which seals against itself and collapses. Because the vessel was emptied beforehand, no blood coagulates inside it. That is an important difference from high energy methods, where heating a full vessel can cause rupture, purpura or residual pigmentation.
3. Absorption
The sealed vessel is no longer functional and is gradually cleared by the body through its normal absorption mechanisms. Visually the vessel already disappears as the energy is applied, which lets the operator check immediately whether a segment has been treated completely and go back over it on the spot if needed.
Why low energy matters
A vascular laser or IPL has to deliver enough energy to cross the epidermis and be absorbed by haemoglobin. Melanin in the skin absorbs part of that same energy, which is where the limitations on darker skin types and the restrictions around sun exposure come from. ThermaVein delivers energy directly at the vessel through contact, so the amount required is far smaller and does not depend on what sits between source and target.
Clinical indications
The device covers two families of lesions, both superficial and both common in day-to-day practice.
Vascular lesions
Benign skin lesions
Clinical note: any pigmented or vascular lesion without a confirmed diagnosis must be assessed dermatologically before treatment. The device destroys the lesion, so later examination is no longer possible.
Where it fits next to IPL, vascular laser and sclerotherapy
None of these methods replaces the others. What separates them is the lesion type and the surface to be covered.
| Criterion | ThermaVein | IPL or vascular laser | Sclerotherapy |
|---|---|---|---|
| Target | Vessel wall, through contact | Haemoglobin, through light absorption | Endothelium, through an injected agent |
| Suitable vessels | Fine, superficial, well defined | Diffuse networks, large surfaces | Larger vessels, lower limbs |
| Skin type | No restriction | Restrictions on skin types IV to VI | No restriction |
| When the result appears | During the session | After several weeks, across multiple sessions | After several weeks |
| Aftercare | Transient redness, no dressing | Strict sun protection, possible purpura | Compression stocking, activity restrictions |
Where ThermaVein is not the right choice
- Varicose veins and chronic venous insufficiency. These call for vascular assessment and dedicated procedures, not a surface device.
- Extensive diffuse redness, such as erythematotelangiectatic rosacea across the whole cheek. An area-based device covers that surface faster.
- Leg vessels above roughly 3 mm, where sclerotherapy remains the reference and thermocoagulation is used alongside it.
Safety, skin types and contraindications
Low energy removes part of the risk, but it does not remove the need for correct patient selection.
What lowers the risk
- Melanin is not the target chromophore, so the post-inflammatory hyperpigmentation typical of light-based treatments on darker skin does not occur
- The vessel is emptied before application, so there is no intravascular coagulation carrying a risk of purpura
- The probe is insulated along its length, so the energy stays at the point of contact
- Probes are single-use, which removes resterilisation steps
Contraindications
- Pregnancy and breastfeeding
- Pacemaker or other implanted electronic device
- Epilepsy
- Ongoing anticoagulant therapy
- Active skin infection in the treatment area
- Recently applied fake tan
- Undiagnosed pigmented or vascular lesions, which need dermatological assessment first
The list above is indicative and does not replace individual patient assessment or the clinic's own protocol.
Protocol and realistic expectations
What a clinic can tell a patient before the procedure, without promising more than the method delivers.
Session length
Number of sessions
After the procedure
About how long the result lasts
The treated vessel is sealed and absorbed, so that vessel does not return. New vessels can appear, particularly in patients with rosacea, a family predisposition or chronic sun exposure. This distinction is worth explaining before the procedure: the treatment addresses existing lesions, not the cause that produces them. A properly informed patient comes back for maintenance, one who was promised a permanent result comes back dissatisfied.
Manufacturer and compliance
About ThermaVein Ltd
- Head office: Horwich, Bolton, United Kingdom
- Company number: 08033780
- Focus: thermocoagulation devices for superficial vascular lesions
- Presence: clinics across Europe, North America and the Middle East
- In Romania: aEstet Technology is the distributor
Certification
- CE medical: European marking, since August 2012
- ISO 13485: quality management system for medical devices
- FDA: device registered in the United States
Technical specifications
ThermaVein thermocoagulation system
| Operating principle | Thermocoagulation via high frequency current |
| Frequency | 4 MHz |
| Applicator | Insulated single-use probe, 0.3 mm diameter |
| Application | On the skin surface, no incision |
| Controls | Hand-held remote and foot pedal |
| Treatment time | Under 15 minutes per area in most cases |
| Skin types | I to VI (melanin is not the target) |
| Consumables | Sterile probes, packs of 50 and 150 |
| Certification | CE medical (August 2012), ISO 13485, FDA registered |
| Manufacturer | ThermaVein Ltd, United Kingdom |
What the clinic gets with the device
Certified training
Service in Romania
Consumables on demand
Consumables and support
Clinics already using ThermaVein can order consumables and spare parts directly from aEstet Technology.
Sterile single-use probes
Packs of 50 and 150
Applicator and applicator lead
Replacement parts for normal wear
Foot pedal and remote
Alternative control during the procedure
Power cable
Original replacement part
Magnified vision system
Accessory for working on very fine vessels
Service call-out
Technical inspection and repair, in Romania
On-site training
Session at the clinic, for new operators
Patient information material
Leaflets and presentation support
Prices vary with quantity and with the clinic's agreement, so we share them on request. Tell us what you need and which unit you have in the clinic, and the team will come back with availability and delivery time.
Request a consumables quoteWhat it means for the clinic
The points below are operational, not revenue promises. Financial outcomes depend on patient volume and each clinic's pricing.
Investment and space
The device is compact and portable, fits into an ordinary treatment room and needs no cooling circuit, special ventilation or building work. The initial investment is considerably lower than a laser platform, which makes it an accessible addition to existing equipment.
Clinic workflow
A short procedure fits between longer appointments. A result visible in the same session shortens the path from consultation to decision and supports word of mouth.
No consumables contract
There is no minimum monthly purchase obligation. Consumable cost maps directly to the number of procedures performed, which makes the return calculation simpler.
A complementary service
It serves patients that IPL and vascular laser handle poorly: darker skin types, isolated well defined vessels, angiomas and skin tags. It does not cannibalise existing equipment, it covers the cases that equipment turns away.
Frequently asked questions
What is thermocoagulation and how does it differ from vascular laser or IPL?
Thermocoagulation delivers a high frequency current (4 MHz) through an insulated probe applied to the skin surface. The energy seals the vessel wall, the vessel collapses and the body subsequently absorbs it. Vascular laser and IPL work differently: they emit light that has to be absorbed by a chromophore, usually haemoglobin, and melanin in the skin competes for the same energy. Two practical differences follow. First, thermocoagulation does not depend on skin type, because melanin is not the target. Second, the total energy delivered is considerably lower and is concentrated at a single point instead of spread across an area.
Which skin types can be treated?
All of them, including darker skin types and recently sun-exposed skin, precisely because melanin is not the target. This is the main difference from IPL, where the risk of post-inflammatory hyperpigmentation limits use on skin types IV to VI. Individual assessment remains mandatory, and a test patch at the first session is advised.
How many sessions are needed and how long does the result last?
For most superficial facial vascular lesions a single session is enough, with occasional top-ups on partially treated areas. The treated vessel does not return, because it has been sealed and absorbed. New vessels can appear over time, particularly in patients with rosacea, a genetic predisposition or chronic sun exposure. That is a recurrence of the condition, not a return of the treated vessel, and the patient should understand the distinction before the procedure.
How long does a procedure take and what happens afterwards?
Under 15 minutes per area in most cases. The result is immediate: the vessel disappears as the energy is applied. Local redness and fine linear marks, often described as cat scratches, follow and settle within a few hours or one to two days. No dressings, no compression stockings, no downtime.
What does training involve and who can operate the device?
Certified training is required before the first treatment on a patient. It covers patient selection, distinguishing vascular from pigmented lesions, parameter settings, application technique and managing post-procedure reactions. Who may perform the procedure depends on the professional regulations that apply to the practice, and aEstet Technology can advise based on the type of clinic.
What is ThermaVein not suited for?
It is not a solution for varicose veins and chronic venous insufficiency of the legs, which require vascular assessment and dedicated procedures. It is not efficient across large areas of diffuse redness, where an area-based device such as IPL or vascular laser covers the surface faster. For leg vessels above roughly 3 mm, sclerotherapy remains the reference option, with thermocoagulation used alongside it for the remaining fine vessels.
Demonstration and assessment for your clinic
For a hands-on demonstration, detailed technical specifications or a discussion about fitting ThermaVein into your clinic workflow, the aEstet Technology team is available.
We are the ThermaVein distributor in Romania. We provide technical consultancy, operator training and nationwide service support.
Request information
Fill in the form below and we will get back to you with details tailored to your practice.
Contact form
Fill in the fields below so we can understand your context and give you a relevant answer.