In 1953, Sven-Ivar Seldinger develop a technique for inserting catheters into the blood vessels via an INtroducer. the home of Sven-Ivar Seldinger, who developed the Seldinger, the method used in all hospitals throughout the world to insert catheters into the bloodstream via an Introducer.

Using this as inspiration, Staffan Holmin’s team developed the EXtroducer infusion catheter, a novel catheter that uses the same Seldinger principal to exit blood vessels and reach the adjacent tissues. Large animal proof of principal studies at the Karolinska Institutet in tissues, such as heart, kidney, pancreas, and liver, have been performed.

The Extroducer can be integrated with many off-the-shelf microcatheters and navigated into the microvasculature.

catheter angio

See the Extroducer in use

Extroducer publications

  1. Lundberg, J., Johansson, C. B., Jonsson, S. & Holmin, S. Access to the brain parenchyma using endovascular techniques and a micro-working channel. Journal of Neurosurgery 1–7 (2016).
  2. Lundberg, J. et al. Endovascular Method for Transplantation of Insulin-Producing Cells to the Pancreas Parenchyma in Swine. American Journal of Transplantation 14, 694–700 (2014).
  3. Lundberg, J. et al. Liver parenchyma access and lesion marker via the endovascular route. Journal of Surgical Research 195, 488–494 (2015).
  4. Lundberg, J., Jonsson, S. & Holmin, S. Long Term Follow-Up of the Endovascular Trans-Vessel Wall Technique for Parenchymal Access in Rabbit with Full Clinical Integration. PLoS ONE 6, e23328–6 (2011).
  5. Lundberg, J., Jonsson, S. & Holmin, S. New Endovascular Method for Transvascular Exit of Arteries and Veins: Developed in Simulator, in Rat and in Rabbit with Full Clinical Integration. PLoS ONE 5, e10449–9 (2010).