This invention provides an effective assistant puncture needle, injection needle, needle positioning device and the objective is to identify ways to help Doctor more accurately judge the success of a puncture or an injection, avoiding improper medical treatment for body injury after surgery . The main idea is to use an image sensing method to detect the different tissue structure which provides different image and achieves the purpose of identification of accurate position of the tissue. The creative optical system design includes optical components, needles and image pick-up device, and the picked images which can be displayed and monitored for the purposes of positioning and medical treatment.本創作提供一種有效輔助注射針、穿刺針定位的裝置,客觀的鑑別方式幫助醫師更精確的判斷成功穿刺或是注射,避免醫療施作不當而造成術後身體損傷或不適等後遺症。主要的概念是利用一種影像偵測方式,偵測不同組織有不同影像,因而藉由辨識組織達成特殊定位的目的。本創作設計結合光學元件、針和影像偵測的裝置,可顯示穿刺時的影像,並監控這個訊號的變化情形,達成定位之功能或治療目的之手段。100‧‧‧探測針101‧‧‧針尖透鏡102‧‧‧準直透鏡103‧‧‧光學成像裝置104‧‧‧功能性通道105‧‧‧訊號感測器106‧‧‧照明光纖