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Ultrasound guided plexus anaesthesia


The visibility of cannula tips in ultrasound guided puncture is very important in preventing damage to neurons and blood vessels1) This property has become a key decision-making criterion in the selection of cannulas in practice.2) as even cannulas that are visible under ultrasound cannot always be identified at angles of 45° and above.3) In this context PAJUNK® developed the new Sono cannula generation, which is characterised by outstanding echogenicity irrespective of the insertion angle.3)
These Sono cannulas that are coated by NanoLine thin-layer technology are available in different kits for deployment for single shot as well as the continuous technique.

Sono cannulas more visibility and security under ultrasound




> Cornerstone Reflectors for maximum echogenicity

The patented Cornerstone Technology developed by PAJUNK® together with Dr. Chris Mitchell was designed specifically to solve this problem, and produces, with its special geometry and design, excellent visibility irrespective of the insertion angle.4) Both the shaft and tip of the cannula are very clearly visible.5) In this way, Sono cannulas make an important contribution to the safety of the application.6)



> Precise nerve stimulation with NanoLine

For verification within the “dual guidance” procedure can in a second step the accuracy of cannula placement can be checked by nerve stimulation. To this end, the distance from the nerve is deduced from the lowest current strength required for stimulation. The PAJUNK® NanoLine thin-coating technology offers considerable benefits with regard to accuracy of stimulation. Because it allows the insulating layer to be reduced to a minimum without reducing functionality. This extremely thin plastic layer, which is applied to every internal and external part of the device except the bare tip, allows highly accurate puncture and precise stimulation.




1) Wiesmann T., Bornträger A., Zoremba M., Neff M., Wulf H., Steinfeldt T. Compound imaging technology and echogenic needle design: effects on needle visibility and tissue imaging, Reg. Anesth. Pain Med. 2013 Sep–Oct; 38(5): 452–455

2) Sviggum H. P., Ahn K., Dilger J. A., Smith H. M. Needle echogenicity in sonographically guided regional anesthesia: blinded comparison of 4 enhanced needles and validation of visual criteria for evaluation, J. Ultrasound Med. 2013 Jan; 32(1): 143–148

3) Uppal V., Sondekoppam R. V., Ganapathy S. Effect of beam steering on the visibility of echogenic and non-echogenic needles: a laboratory study, Can. J. Anesth. 2014 Oct; 61(10): 909–915

4) Hebard S., Hocking G., Murray K. Two-dimensional mapping to assess direction and magnitude of needle tip error in ultrasoundguided regional anaesthesia, Anaesth. Intensive Care 2011; 39(6): 1076–1081

5) Edgcombe H., Hocking G. Sonographic identifi cation of needle tip by specialists and novices: a blinded comparison of 5 regional block needles in fresh human cadavers, Reg. Anesth. Pain Med. 2010 March–April; 35(2): 207–211

6) Hocking G. Mitchell C. Optimizing the safety and practice of ultrasound-guided regional anesthesia: the role of echogenic technology, Curr. Opin. Anaesthesiol. 2012 Oct; 25(5): 603–609

 
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