An ultrasound probe dedicated for guiding the puncture needle, it sets a passage in the center of the structure and the diameter of the passage is equal to the outer diameter of puncture needle. When puncture needle passes through the center of the passage and enters the tissue, not only before puncture but also during puncture, the piezoelectric transducers disposed around the passage can immediately receive ultrasound echo signals of tissues. The ultrasound echo signal can distinguish out bony tissue and non-bony tissue by the strength of the echo signals, and guide the puncture needle to avoid bony tissues. The bony and non-bony tissues can be distinguished out by the strength of the echoes so that the puncture needle can be guided to avoid hitting the bony tissue during insertion.一種導引穿刺用之超音波探頭係在該探頭結構中心處設有一通道,並且該通道直徑為穿刺針的外徑,當穿刺針經此中心通道進行穿刺時,不管是穿刺前或穿刺中,通道周圍的壓電換能器都可即時接收組織的超音波回波訊號,藉由回波訊號的強弱來辨識出骨組織與非骨組織,用以導引穿刺針來避開骨組織。1‧‧‧超音波探頭2‧‧‧空心通道31‧‧‧壓電換能器一32‧‧‧壓電換能器二33‧‧‧壓電換能器三34‧‧‧壓電換能器四
