Multi-screen hands-free pointer system for minimally invasive surgery

腹腔镜手术是一种微创手术（MIS），其中细长的器械和内窥镜通过小切口进入患者体内。虽然MIS减少了组织创伤，术后疼痛和恢复时间，但它需要高水平的经验和技能，并对外科学员提出了挑战。在高级微创腹腔镜手术中，外科医生（指导员）和助理（受训者）通常双手都被手术器械占据。此外，两者在手术室都有自己的监视器，可以显示手术图像。手术室的这种配置使手术时的教学变得复杂，因为教师经常被迫松开其中一个器械，指向受训者的监护仪来提供指导。

Laparoscopic surgery is a type of minimally invasive surgery (MIS) in which long slender instruments and an endoscope enter the patient's body through small incisions. Although MIS reduces tissue trauma, post-operative pain and recovery time, it requires a high level of experience and skill, and poses challenges to surgical trainees. During advanced minimally invasive laparoscopic surgery, the surgeon (instructor) and assistant (trainee) typically have both hands occupied by surgical instruments. In addition, both have their own monitor in the operating room on which the surgical image appears. This configuration in the operating room complicates the delivery of instruction while performing surgery, as the instructor is often forced to release one of the instruments to point to the trainee's monitor to provide instruction.