Tuohy Needle Design : Tip Geometry and Procurement Guide
The Tuohy needle is the foundation of epidural anaesthesia. It resembles a typical steel tube. However, the tip shape took decades to perfect. It also has substantial clinical consequences. A defective tip may suggest a botched first effort. It may also signify a torn dura or a severe headache.
Source : https://www.kdlnc.com/tuohy-ne....edle-design-tip-geom
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