Sun Yilun, Zhang Dingzhi, Lueth Tim C
Annu Int Conf IEEE Eng Med Biol Soc. 2020 Jul;2020:4704-4707. doi: 10.1109/EMBC44109.2020.9176027.
Disposable forceps are frequently used in different surgical procedures to prevent infections caused by poorly sterilized reusable metal forceps. Compared to traditional rigid-joint mechanisms, compliant mechanisms are much easier to sterilize due to their monolithic structure, hence they are widely used for designing disposable surgical forceps. However, the clamping performance of plastic compliant forceps is generally less robust than metal forceps, which has greatly limited their use in medical applications. To cope with this problem, a novel 3D-printed plastic compliant forceps with optimized clamping performance was developed in this paper for open surgery and physical nursing applications. Bio-inspired topology optimization techniques were employed to synthesize the forceps. The clamping capability of the proposed forceps was evaluated by finite element analysis and loading tests. Results showed that the proposed forceps can generate greater and more stable clamping forces than the previous model of disposable compliant forceps. The proposed bionic optimization method also has potential for synthesizing compliant devices for robotic surgery.
一次性镊子常用于不同的外科手术中，以防止因可重复使用的金属镊子消毒不彻底而导致感染。与传统的刚性关节机构相比，柔性机构由于其整体结构，消毒要容易得多，因此被广泛用于设计一次性手术镊子。然而，塑料柔性镊子的夹持性能通常不如金属镊子，这极大地限制了它们在医疗应用中的使用。为了解决这个问题，本文开发了一种新型的具有优化夹持性能的3D打印塑料柔性镊子，用于开放手术和物理护理应用。采用仿生拓扑优化技术来合成镊子。通过有限元分析和加载试验对所提出的镊子的夹持能力进行了评估。结果表明，所提出的镊子能够产生比以前的一次性柔性镊子模型更大、更稳定的夹持力。所提出的仿生优化方法在合成用于机器人手术的柔性装置方面也具有潜力。
