To Compare the Success Rate of Internal Jugular Vein Catheterization at the First-attempt Between Single-operator Laser-assisted T-shaped Probe and Traditional Ultrasound-guided Out-of-plane Technique in Adults (≥ 18 Years of Age).

The Single-operator Laser-assisted T-shaped probe consisted of TuoRen Ultrasonic System (TUR200, Shenzhen Tuoren Bio-Medical Electronics Co., LTD) with a T-shaped probe (L38T7C), a 3D-printed probe-carrying enclosure with a linear laser transmitter ( ZLM120AL650-22130BXS, Shenzhen Zhonglai Technology Co., Ltd.) and ultrasonic probe manipulator.

Ultrasonic (Huasheng Color Ultrasonic Diagnostic System, Navi s, Shenzhen Huasheng Medical Technology Co., LTD.) and a 4.0MHz phased probe were used for the short-axis out-of-plane internal jugular vein catheterization