1. Ultrasound-guided percutaneous cryoneurolysis for treatment of acute pain: could cryoanalgesia replace continuous peripheral nerve blocks? 
B.M. Ilfeld, R.A. Gabriel, A.M. Trescot 
British Journal of Anaesthesia 
Volume 119, Issue 4, Pages (October 2017)
DOI: /bja/aex142
Copyright © 2017 The Author(s) Terms and Conditions

2. Fig 1
A modern cryoneurolysis probe (‘cannula’) produces extremely cold temperatures at its tip because of the Joule–Thomson effect resulting from gas flowing from a high- to low-pressure chamber [used with permission from B.M.I.].
British Journal of Anaesthesia  , DOI: ( /bja/aex142)
Copyright © 2017 The Author(s) Terms and Conditions