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A Minimally Invasive Robotic Tissue Palpation Device.
IEEE Transactions on Bio-Medical Engineering
|January 23, 2024
Summary
This study introduces a robotic palpation device to quantify soft tissue stiffness, enabling surgeons to better identify abnormal tissues like tumors during robot-assisted minimally invasive surgery.
Area of Science:
- Robotics
- Biomedical Engineering
- Surgical Technology
Background:
- Robot-assisted minimally invasive surgery lacks haptic feedback, crucial for assessing tissue stiffness.
- This limitation impedes the identification and treatment of abnormal tissues, such as tumors, during robotic procedures.
Purpose of the Study:
- To develop a robotic tissue palpation device for quantifying soft tissue stiffness.
- To enable objective, data-driven decisions for surgeons during minimally invasive surgery.
Main Methods:
- Developed a robotic device for rapid, non-invasive quantification of soft tissue stiffness.
- Evaluated the device on phantoms and various animal tissues (lung, heart, liver, skin).
Main Results:
- The device accurately determined tissue stiffness and located a 2-cm tumor mimic in swine lung.
- Measured elastic modulus values for swine lung, heart, liver, skin, and muscle, consistent with literature.
Conclusions:
- The robotic palpation device can enhance surgical outcomes by enabling accurate intraoperative identification of abnormal tissue.
- The device can be integrated into existing robotic surgical systems or used as a stand-alone tool.

