Topology Optimization of Compliant Mechanism for Laparoscopic Surgery Instruments

Compliant mechanisms are flexible single-piece structures that produce the desired movement by going through elastic deformation, which is different from the traditional mechanisms that are joined by rigid bodies. Some of the advantages of compliant mechanisms include reduced friction, wear, noise and the possibility to generate unconventional actuation as well as ease of manufacture and assembly. A critical step in the design of compliant mechanisms is topology optimization for material distribution. It helps designers to extend and fine-tune a design that already has near-optimum material distribution. It involves determining the shape and location of holes of a structure as well and the connectivity of the domain.