Usability-optimization of the interface parameters shape and material in an interaction-based arm-assistance-system

在腹腔镜手术期间，外科医生经常具有不舒适的静止手臂和上身姿势，这导致对上肢的高要求。这可能导致疲劳和有效性降低，表现为腹腔镜手术期间错误率增加。必须全面调查和改善这些缺陷。武器援助系统可以弥补这些不足。手臂辅助系统通过在所有静态和动态手臂姿势和运动中经由手臂支撑件将支撑力自适应地传递到前臂来支撑用户。到目前为止，已经进行了研究的可用性的功能原理，手臂支撑面积和自适应手臂支撑力取决于手臂的位置。缓解了上肢和精度的提高被证明。在本研究项目中，界面参数的形状和材料的扶手为选定的操作场景，这是基于以前的项目，尚未被研究，调查方面的可用性。这些是动态操作场景以及倾斜的静态前臂支撑，其受到扶手的界面参数形状和材料的影响。将研究在执行模拟临床任务期间手臂辅助系统的扶手的形状和材料的变化。将收集和评价可用性参数有效性（精度、运动跟踪、工作流分析）、效率（任务执行时间）和满意度（调查）。在以前的项目中开发的设计建议的手臂支撑面积和手臂支撑力垂直从下面的手臂支撑取决于手臂姿势的手臂上使用的调查。手臂支撑区域由前臂上的支撑位置和取决于前臂长度的手臂支撑的支撑长度组成。研究项目的结果是对形状和材料特性的一般性陈述，为用户提供最佳的可用性。

During a laparoscopic operation, the surgeons often have uncomfortable static arm and upper body postures, which lead to high demands on the upper extremities. This can lead to fatigue and reduced effectiveness in the form of increased error rates during laparoscopic procedures. These deficits must be investigated and improved holistically. An arm assistance system can counteract these deficits. The arm assistance system supports the user by adaptively transferring a supporting force to the forearm via the arm support in all static and dynamic arm postures and movements. So far, studies have been carried out on the usability of the functional principle, the arm support area and the adaptive arm support force depending on the arm position. A relief of the upper extremities and improvement of precision was proven.In this research project, the interface parameters shape and material of the armrest for selected operating scenarios, which are based on the previous projects and have not yet been researched, are investigated with regard to usability. These are dynamic operating scenarios as well as inclined static forearm supports, which are influenced by the interface parameters shape and material of the armrest. Variations of the shape and material of the armrest of the arm assistance system during the execution of a simulated clinical task will be investigated. The usability parameters effectiveness (precision, motion tracking, workflow analysis), efficiency (time for task execution) and satisfaction (survey) will be collected and evaluated. The design recommendations developed in previous projects for the arm support area and the arm supporting force acting vertically from below on the arm support depending on the arm posture are used in the investigations. The arm support area consists of the support position on the forearm and the support length of the arm support depending on the forearm length. The result of the research project is a general statement on the shape and material properties with optimal usability for the user.