Research of Force Feedback and Control Based on Catheter Insertion Robotic System

Lack of distal force feedback of catheter insertion robotic system makes it difficult for doctors to perceive the force between catheter and tissue and results in complications even perforation or death. This paper assembled force sensor array which was manufacture by pressure sensitive rubber on the tip of catheter and mapped the three-dimension force to master handle, so the doctors could sense the distal force actually. Impedance control was introduced to control the distal force and to guarantee the safety of interventional procedure. Simulation result showed the impedance control method could limit the distal force of catheter to expectations effectively.