Artificial tactile feedback can significantly improve tissue examination through remote palpation

Area of Science:

• Minimally Invasive Surgery
• Surgical Technology
• Haptics

Background:

• Laparoscopic surgery demands high surgeon skill due to impaired tactile feedback and reduced instrument dexterity.
• Artificial tactile feedback (ATF) shows promise in enhancing tactile information during surgical procedures.
• Further research on ATF's interaction with tissue properties and detection thresholds is needed for clinical applications.

Purpose of the Study:

• To identify laparoscopic surgical procedures that could benefit from ATF for tissue examination via remote palpation.
• To evaluate the impact of ATF on detecting hidden objects during laparoscopic surgery.

Main Methods:

• Development of a laparoscopic grasper with a tactile sensor array to provide ATF.
• Graphical display of pressure distribution data on the endoscopic screen.
• Comparative study involving surgeons and non-surgeons assessing object detection with and without ATF, analyzed using MANOVA.

Main Results:

• ATF significantly improved accuracy, speed, reduced the number of grasps, and increased user confidence.
• The benefits of ATF were most pronounced when detecting hidden objects that were either hard/small or large/soft and difficult to discern without tactile feedback.

Conclusions:

• ATF-enhanced instrumentation offers promising applications in laparoscopic surgery.
• This technology can be valuable for the detection and examination of hidden structures through remote palpation in laparoscopic procedures.