Surgical instrument for epidural anesthesia.

摘要

The invention relates to a surgical instrument comprising a needle (100) and a catheter (200) ASSOCIATE, slidable IN NEEDLE, PARTICULARLY FOR OPERATION OF ANESTHESIA. The catheter is equipped with a set of MAIN THRUST REFERENCES (210) SUSCEPTIBLE TO AGREE, when the catheter (20) is inserted into the needle (100), with an index (I) DEFINED ON THIS, TO INDICATE, BY SIMPLE READING, without calculation, the length (L) catheter OUT OF distal end (1100) NEEDLE AND IS EQUIPPED WITH A SET OF THRUST REFERENCES AUXILIARY EASILY differentiable OF REFERENCES MAIN (210) DESTINED TO iNDICATE, BY SIMPLE READING WITHOUT cALCULATIONS The length of catheter extending from its distal end to each of said auxiliary REFERENCES.