title: Design and Coordination Kinematics of an Insertable Robotic Effectors Platform for Single-Port Access Surgery.
abstract: Single port access surgery (SPAS) presents surgeons with added challenges that require new surgical tools and surgical assistance systems with unique capabilities. To address these challenges, we designed and constructed a new insertable robotic end-effectors platform (IREP) for SPAS. The IREP can be inserted through a Ø15 mm trocar into the abdomen and it uses 21 actuated joints for controlling two dexterous arms and a stereo-vision module. Each dexterous arm has a hybrid mechanical architecture comprised of a two-segment continuum robot, a parallelogram mechanism for improved dual-arm triangulation, and a distal wrist for improved dexterity during suturing. The IREP is unique because of the combination of continuum arms with active and passive segments with rigid parallel kinematics mechanisms. This paper presents the clinical motivation, design considerations, kinematics, statics, and mechanical design of the IREP. The kinematics of coordination between the parallelogram mechanisms and the continuum arms is presented using the pseudo-rigid-body model of the beam representing the passive segment of each snake arm. Kinematic and static simulations and preliminary experiment results are presented in support of our design choices.
authors: Advanced Robotics and Mechanism Applications Laboratory, Columbia University, New York, NY 10027 USA. He is now with Hstar Technologies, Inc., Cambridge, MA 02138 USA.
authors: Jienan
authors: J
authors: Ding
authors: Roger E
authors: RE
authors: Goldman
authors: Kai
authors: K
authors: Xu
authors: Peter K
authors: PK
authors: Allen
authors: Dennis L
authors: DL
authors: Fowler
authors: Nabil
authors: N
authors: Simaan
keywords: Continuum robots; kinematics; medical robotics; parallel mechanisms; single-port access surgery (SPAS)
references: Surg Laparosc Endosc Percutan Tech. 2007 Oct;17(5):422-4
references: 18049406
references: Gastrointest Endosc. 2007 Dec;66(6):1243-5
references: 17892873
references: Am J Surg. 2005 Jul;190(1):131-6
references: 15972186
references: Surg Endosc. 2009 Jul;23(7):1419-27
references: 19347400
references: J Gastrointest Surg. 2009 Mar;13(3):533-4
references: 18709515
references: Int J Rob Res. 2009 Sep 1;28(9):1134-1153
references: 20160881
references: Int J Med Robot. 2008 Mar;4(1):15-22
references: 18314917