PROBLEM TO BE SOLVED: To provide a puncture adapter for an ultrasonic probe which steadily holds a puncture needle so that the puncture needle is not easily disengaged from a guide section when the puncture needle is intended not to be released.SOLUTION: The adapter includes a holder section which can be attached to the ultrasonic probe, a base section 7 which combines with the holder section and includes a V-shaped groove 8, and a clip section 9 having a V-shaped projection 10 corresponding to the V-shaped groove 8, wherein the puncture needle is held between the V-shaped groove 8 and the V-shaped projection 10, and the puncture needle can slide in a direction of the groove of the V-shaped groove 8. An angle of the V shape of the V-shaped projection 10 is larger than of the V-shaped groove 8.COPYRIGHT: (C)2009,JPO&INPIT【課題】穿刺針の開放を意図しない時には、ガイド部から穿刺針が簡単に外れることがないよう、確実に挟持する超音波プローブ用穿刺アダプタを提供する。【解決手段】超音波プローブに取り付け可能なホルダ部と、ホルダ部と結合し、V字溝8を有するベース部7と、V字溝8に対応したV字突起10を有するクリップ部9とを備え、V字溝8とV字突起10との間で穿刺針を挟持させ、穿刺針をV字溝8の溝方向に移動可能とする。V字突起10におけるV字の角度は、V字溝8におけるV字の角度より大きい。【選択図】図2B