Design of a novel tendon-driven manipulator structure based on monolithic compliant rolling-contact joint for minimally invasive surgery

Purpose Compliant mechanisms are commonly used in the design of manipulator and surgical robotic tools for minimally invasive surgery (MIS) thanks to their compactness, ability of miniaturization and lower part count. However, conventional compliant joint has higher internal stiffness, which limits the bending radius. To overcome this problem, a novel tendon-driven manipulator structure based on monolithic compliant rolling-contact joint (CRCJ) is proposed. Methods The proposed rolling-contact mechanism is used to prevent cable slack during actuation, which occurs in conventional compliant joint design. By means of selective laser sintering (SLS) technique, the CRCJ can be fabricated in a monolithic structure, thus granting the CRCJ both the advantages of compliant joints and rolling-contact mechanism. Simulations with nonlinear finite element analysis (FEA) and experiments were conducted to evaluate and compare the mechanical properties of the proposed CRCJ with conventional leaf-type compliant joint including the bending and compliant motion. Results Experimental results showed that the CRCJ has lower bending stiffness, higher maximum bending angle (over $$180^{\circ }$$ 180 ∘ ) and a higher compliance compared to conventional compliant hinges, which allows a larger workspace and reduces the possibility of tissue injury. Agreement was also found between the nonlinear FEA and experiments regarding the relation between actuation force and bending angle. A primary prototype of a 3-DOF handheld laparoscopic manipulator with a diameter of 7 mm was further developed. Conclusion A dexterous tendon-driven monolithic manipulator structure based on CRCJ for MIS is proposed. A preliminary prototype of a handheld laparoscopic manipulator demonstrates the capability of the CRCJ for steerable medical devices. However, design improvements based on FEA and application-orientated prototypes considering anatomical requirements still show room for improvements.

[1]  HyunKi In,et al.  Design Concept of Hybrid Instrument for Laparoscopic Surgery and Its Verification Using Scale Model Test , 2016, IEEE/ASME Transactions on Mechatronics.

[2]  Howie Choset,et al.  Continuum Robots for Medical Applications: A Survey , 2015, IEEE Transactions on Robotics.

[3]  Kiyoung Kim,et al.  Design and Evaluation of a Continuum Robot with Discreted link joints for Cardiovascular Interventions , 2018, 2018 7th IEEE International Conference on Biomedical Robotics and Biomechatronics (Biorob).

[4]  Guang-Zhong Yang,et al.  Design and Fabrication of a 3-D Printed Metallic Flexible Joint for Snake-Like Surgical Robot , 2019, IEEE Robotics and Automation Letters.

[5]  Hongen Liao,et al.  Design and Modularization of Multi-DoF Soft Robotic Actuators , 2019, IEEE Robotics and Automation Letters.

[6]  Tim C. Lueth,et al.  FEM-Based Mechanics Modeling of Bio-Inspired Compliant Mechanisms for Medical Applications , 2020 .

[7]  Lena Zentner,et al.  Compliant systems: Mechanics of elastically deformable mechanisms, actuators and sensors , 2019 .

[8]  Tim C. Lueth,et al.  Automatic Design of Compliant Surgical Forceps With Adaptive Grasping Functions , 2020, IEEE Robotics and Automation Letters.

[9]  Yacine Amirat,et al.  Modeling and Control of a Continuum Style Microrobot for Endovascular Surgery , 2011, IEEE Transactions on Robotics.

[10]  John Kenneth Salisbury,et al.  Mechanics Modeling of Tendon-Driven Continuum Manipulators , 2008, IEEE Transactions on Robotics.

[11]  Arianna Menciassi,et al.  A Soft Modular Manipulator for Minimally Invasive Surgery: Design and Characterization of a Single Module , 2016, IEEE Transactions on Robotics.

[12]  Tim C. Lueth,et al.  3D Printed Single Incision Laparoscopic Manipulator System Adapted to the Required Forces in Laparoscopic Surgery , 2019, 2019 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS).

[13]  Yilun Sun,et al.  SGCL: A B-Rep-Based Geometry Modeling Language in MATLAB for Designing 3D-Printable Medical Robots , 2021, 2021 IEEE 17th International Conference on Automation Science and Engineering (CASE).

[14]  Fan Feng,et al.  Design of 3D-Printed Flexible Joints With Presettable Stiffness for Surgical Robots , 2020, IEEE Access.

[15]  Jung-wook Suh,et al.  Design Considerations for a Hyper-Redundant Pulleyless Rolling Joint With Elastic Fixtures , 2015, IEEE/ASME Transactions on Mechatronics.

[16]  Tim Lüth,et al.  Forces in minimally invasive surgery: Reliable manipulation of gastric mucosa and the sigmoid colon , 2014, 2014 IEEE International Conference on Robotics and Biomimetics (ROBIO 2014).

[17]  Walker Reynolds.  The First Laparoscopic Cholecystectomy , 2001, JSLS : Journal of the Society of Laparoendoscopic Surgeons.

[18]  Tim C. Lueth,et al.  Evaluation of long-term stability of monolithic 3D-printed robotic manipulator structures for minimally invasive surgery , 2020, International Journal of Computer Assisted Radiology and Surgery.

[19]  Tim C. Lueth.  SG-Library: Entwicklung einer konstruktiven MATLAB-Toolbox zur räumlichen Modellierung von Körpern, Gelenken und Getrieben , 2015 .

[20]  Tim C. Lueth,et al.  FEM-Based Mechanics Modeling of Bio-Inspired Compliant Mechanisms for Medical Applications , 2020, IEEE Transactions on Medical Robotics and Bionics.

[21]  Timothy M. Kowalewski,et al.  Soft Passive Valves for Serial Actuation in a Soft Hydraulic Robotic Catheter , 2016 .

[22]  Clément Gosselin,et al.  A Compliant Rolling Contact Joint and Its Application in a 3-DOF Planar Parallel Mechanism With Kinematic Analysis , 2004 .

[23]  Qixin Cao,et al.  A cable-driven distal end-effector mechanism for single-port robotic surgery , 2021, International Journal of Computer Assisted Radiology and Surgery.