A sterile flexible tube designed to provide percutaneous access to a peripheral nerve group for the insertion of a nerve-block blunt needle and injection of an anaesthetic/analgesic agent for nerve-block/pain control. It is typically made of plastic and contains a sharp-tipped metal needle to facilitate its introduction which may be guided by fluoroscopy. Once introduced, the sharp needle is intended to be removed so the cannula can be used as a conduit for the nerve-block blunt needle. This is a single-use device.
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