Who we are

Aiming for the precise

At CLS, we aim at getting doctors as close as possible to the clinical problem and provide the means needed for solving it – without causing another. We do this by providing precise tools for image-guided laser-mediated thermal ablations.

What we do

Thermal ablation is used for treatment and removal of diseased or abnormal soft tissues, such as malignant tumors (cancer) or epileptogenic foci. The procedure is minimally invasive and can therefore be offered also to patients that are considered inoperable in view of traditional open surgery.

How it all started

CLS has its origins in using laser-mediated thermal ablation for immune stimulating treatment of metastasized (spread) cancer.

Our co-founder professor Karl-Göran Tranberg showed in his scientific research how precise laser-mediated “low temperature-long time” thermal ablation (imILT), of cancer cells, triggered the immune system to track and kill cancer cells throughout the body, the so called abscopal effect.

Our products

CLS portfolio of TRANBERG products integrates with common imaging equipment used in hospitals and operates with high precision using state-of-the-art software with assisted procedure guidance, monitoring, and control.

Today, our products are commercially available and routinely used in focal therapy of localized prostate cancer. Treatment of tumors and other lesions in the brain as well as abscopal treatment of metastasized cancer comes next.

This is how we make a difference – by providing precise and accurate tools that can transform today’s standard-of-care and improve patient outcome and quality of life. Carefully precise.

About CLS

CLS is a medical technology company based in Lund, Sweden. We are committed to continuously develop more precise treatment tools for laser ablation of diseased tissue, such as tumors. Through our platform, more patients can be accurately treated based on their specific diagnosis and needs.

How it works

Our products for laser ablation are based on two different principles, both with the intention of treating patient conditions as precisely as possible, while reducing or eliminating unpleasant side effects.


Our driving force is to design and develop tools for treatment of severe diseases, such as cancer, in a precise and careful way. We have developed the TRANBERG® Thermal Therapy Systems – seamlessly integrated systems for laser ablation, with several options for real time monitoring and control of the treatment.

Welcome to Clinical Laserthermia Systems.

Please note that all our products and indications are not yet approved in all markets. Don’t hesitate to contact us for up-to-date market approvals in your area!

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