Power: 20 to 200 mW
Frequency: 10 to 200 kHz
Feed gas: neon, helium
Flow rate (feed gas): 300 sccm
Shielding gas: carbon dioxid
Flow rate (shielding gas): 300 sccm
Pressure: 1 bar

Technology Readiness Level: 


The Plasmaskop plasma source is designed to be inserted into the working channel of a conventional endoscope. It has a tube-like character, is flexible, very thin and generates a biologically active jet plasma at the gas outlet. The device consists of an inner plastic tube, a ceramic nozzle, an outer plastic tube and a metal wire. The inner plastic tube is plugged upon the thin end of the ceramic nozzle. In order to provide high voltage at the end of the tube and at the same time maintain tube flexibility the metal wire is coiled around the inner tube. The outer plastic tube is placed coaxially over the inner tube. Thus, two gas channels are created. Through the inner tube helium or neon feed gas is provided with moderate flow rates of up to 300 sccm. The resulting gap between the inner and the outer tube is used to bring a second gas (CO₂) to the gas nozzle that acts as shielding gas. Due to the use of feed and shielding gas a stable plasma jet is generated even in hollow bodies.

Further information on fields and limits of application of the Plasmaskop plasma source in ear, nose and throat medicine is provided here (German).

The project in which the device was developed is briefly introduced in


Enhanced atmospheric pressure plasma jet setup for endoscopic applications
J. Winter, T. M. C. Nishime, R. Bansemer, M. Balazinski, K. Wende, and K.-D. Weltmann, J. Phys. D: Appl. Phys. 52 (2018) 024005

On the development of a deployable cold plasma endoscope
J. Winter, T. M. C. Nishime, S. Glitsch H. Lühder, and K.-D. Weltmann, Contrib. Plasma Phys. 58 (2018) 404



Leibniz Institute for Plasma Science and Technology
Felix-Hausdorff-Str. 2
17489 Greifswald
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The Leibniz Institute for Plasma Science and Technology (INP) is the largest non-university institute in the field of low temperature plasmas, their basics and technical applications in Europe. The institute carries out research and development from idea to prototype. The topics focus on the needs of the market. At present, plasmas for materials and energy as well as for environment and health are the focus of interest.


For further information and/or interest in collaborations please contact:

Dr. Robert Bansemer
Plasma Sources

Tel.: +49 3834 554 3976
Fax: +49 3834 554 301

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