Epidural 腔識 another apparatus

A Upon the epidural, fewer parts, so that the tip of the injection needle 5 in a state never medical equipment such as a needle touches can easily identify that which is punctured into the epidural space to. The A needle tip epidural injection needle epidural 腔識 another device identifies that has reached the epidural space, and the cylindrical barrel 2 is communicatively connected to the injection needle 5 side If, to the cylindrical, inserted retractably into the barrel 2, a plunger 3 which air holes 3e are formed leading to the cylinder, provided at the distal end portion 3b of the plunger 3, the air discharge is restricted by the needle 5 side and configured to include an expander member 4 having an inflatable portion 4e which is inflated within the plunger 3 in a positive pressure state by pushing the plunger 3 in state. .The