PROBLEM TO BE SOLVED: To solve the problem that, in venipuncture, while succeeding in test puncture, a puncture needle sometimes fails in being pieced into a vein, since a test puncture needle is extracted once after confirmation of a vein, and the puncture needle cannot advance along the same route as the test puncture needle.SOLUTION: A sheath type puncture needle is attached to a lure tube comprising a female lure on one end and a male lure on the other end, and a 22G stainless pipe having a length projecting from a jacket needle tip as long as several millimeters is inserted into the sheath type puncture needle and fixed, and the sheath type puncture needle is guided surely into a deep vein by using, as a guide shaft, a guide wire retained beforehand in the deep vein through a 22G test puncture needle.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2020,JPO&INPIT【課題】深部静脈穿刺術において、試験穿刺に成功しても本穿刺針が静脈内に刺入されないことがある。その理由は、試験穿刺針は静脈確認後一旦抜去され、本穿刺針が試験穿刺針と同一の経路を進行することができないからである。【解決手段】一端がメスルアーで他端がオスルアーよりなるルアー管に、外套型穿刺針を装着し、外套型穿刺針に外套針先端から数ｍｍ突出する長さの２２Ｇステンレス管を挿入固定し、予め２２Ｇ試験穿刺針を通じて深部静脈内に留置したガイドワイヤーを案内軸として、外套型穿刺針を深部静脈内に確実に誘導する。【選択図】図２
