中央靜脈導管放置是臨床上常用的醫療步驟，主要是為了要獲得靜脈通道。常見的併發症有動脈刺穿、血胸、氣胸，其中又以動脈刺穿的機率最高。
之前文獻有統計全美有9.4%的人，靜脈與動脈的位置有解剖上的差異，因此近年來開始使用超音波輔助內頸靜脈注射引導(needle guide ultrasound)，使用了超音波輔助後，可以有效的提高注射的成功率，但仍然無法降低總頸動脈穿刺的機率，文獻中猜測可能是因為無法去控制針頭的深度。
因此本研究製作新型超音波輔助注射導引裝置，可以用來控制針頭的深度，希望可以提高注射的成功率，並且降低動脈的穿刺的機率，透過3D 列印製作模具並搭配洋菜膠、碳粉與橡膠管，去建立出頸部假體。
本研究找了八個操作者，其中六個是沒有任何臨床扎針經驗的操作者，一個是沒有使用過超音波臨床醫生，一個是有超音波經驗的臨床醫生，隨機的使用超音波與超音波注射引導的方法，透過自製的假體去評估注射的時間、成功率以及動脈刺穿的機率。
結果發現在沒有臨床扎針經驗的操作者，使用注射引導可以有效的提高30%成功率以及降低23.3%動脈刺穿的機率，在沒有超音波經驗的臨床醫生身上，使用注射引導可以有效的提高40%成功率，在有超音波經驗的臨床醫生上，兩者方法均沒有差別，平均而言使用注射引導所花費的時間較傳統的超音波來的長大約20秒。

Central venous catheters (CVCs) are commonly used in clinical procedure to gain venous access. Common complications of using CVCs include arterial puncture, which is the most frequent, hemothorax and pneumothorax. In a previous study, 9.4% people in the United States were reported to have anatomical variations. Ultrasound needle guides are being increasingly used to improve the success rate of internal jugular vein (IJV) cannulation. However, the rate of carotid artery puncture is not reduced because the depth of the needle cannot be controlled even with the ultrasound. Therefore, a new type of needle guide is proposed in this study. The developed needle guide can be used to limit the depth of acupuncture treatment, thus improving the success rate of injection and reducing the possibility of carotid artery puncture. Further, a mold is fabricated using (three-dimensional) 3D printing, and agar, carbon dust, and a rubber tube are used to build a neck phantom. In this study, eight operators randomly used the conventional ultrasound and proposed needle guides to puncture the phantom and recorded the procedure time, success rate, and arterial puncture rate. The results showed that when a needle guide was used, a success rate of 40% was achieved and the artery injury rate was reduced to 11% but with a longer procedure time.

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