Needle assembly for peripheral nerve blocks.

摘要

Needle assembly for peripheral nerve blocks, consisting of a cannula (1) and a plastic mandrel (10) from solid steel, substantially cylindrical, which is provided with a piercing tip without cutting edges and a piece (11) gripping, having a contact (21) electrical plug for connecting an electrical stimulator, being insertable mandrel (10) of steel so the cannula (1), its tip (42) piercing protrudes from its front end or is at least flush therewith, characterized in that the mandrel (10) of steel is configured in a bipolar manner, forming the tip (42) piercing a pole and consisting the second pole in a layer (13) coating conductive, is applied on a layer (14) of insulating material surrounding a closed manner the surface of the coating of the mandrel (10) of steel, and the two poles with a device (21, 37) plug contact electrical being connected I bipo lar.