| 摘要 |
A continuously conductive unipolar cannula for anesthesia is described with an electrically conductive cannula tube ( 10 ), with a tip ( 14 ) at the distal end and a body part ( 18 ) at the proximal end. The cannula tube ( 10 ) is provided with an outer electrically insulating covering, which leaves exposed only an end area ( 16 ) of the distal tip ( 14 ). In the area of the body part ( 18 ), an electrically contacting connection ( 22, 24, 26 ) for electro-stimulation is provided, which is provided radially on the outer circumference of the cannula tube ( 10 ). The body part ( 18 ) includes a guide inlet opening ( 32, 34 ) axially aligned with the cannula tube ( 10 ), through which a catheter can be introduced in the cannula tube ( 10 ). Alternatively, an injection hose or a needle can be connected to the body part ( 18 ).
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