| 摘要 |
PCT No. PCT/FR93/00465 Sec. 371 Date Nov. 10, 1994 Sec. 102(e) Date Nov. 10, 1994 PCT Filed May 12, 1993 PCT Pub. No. WO93/23109 PCT Pub. Date Nov. 25, 1993Surgical instrument for epidural anesthesia comprising a needle and catheter associated therewith which slides in the needle. The catheter has a set of main axial reference marks coinciding with an index on the needle. A reading will indicate the length of the catheter extending from the distal end of the needle. The catheter also includes a set of auxiliary reference marks distinguishable from the main reference marks.
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