Laparoscopic palpation system

  • 概要


  • 背景


  • 研究成果


  • 特徴


  • 研究の未来


project members : Tomohiro Fukuda, Ly Hoang Hiep, Shun Akita


This is a system that aims at intraoperative detection of the tumor that cannot be detected visually during laparoscopic surgery. The surgeon can detect the tumor based on information from a tactile display worn on the finger by scanning the surface of the organ with a forceps-type tactile sensor.

Early-stage gastric tumor is located on the inner surface of the stomach wall, and cannot be detected with visual information. Thus, in conventional open surgery, the surgeon often touches the stomach and detects the tumor, which is often stiffer than the surrounding tissue.

Laparoscopic surgery offers benefits to the patient such as reduced pain and faster recovery compared to open surgery. On the other hand, it significantly limits the surgeons’ tactile sense.If the surgeons’ tactile sense were compensated, the surgeons could detect the tumor by palpating the target tissue.

We developed a tactile sensor and a tactile display suitable for clinical application in collaboration with clinicians to achieve intraoperative tumor detection.

In this system, the surgeon can feel the sensing information through the tactile display in real time, and we aim to utilize the surgeon’s clinical experiences and skills for effective palpation. The ring-type tactile display was designed that it is wore on the finger; thus, it does not disturb the sensor manipulation. Moreover, the tactile sensor has safety for the body tissue because it uses acoustic sensing principle and has no electrical elements within the part inserted into the patient’s body.

We continue to carry out clinical experiments using this system for actual patients who have an early-stage gastric tumor, and we think that our system is approaching to the practical application one step at a time.

We hope that the fusion between haptics and medical field facilitates researches that contribute to provide more patient-friendly medical treatment.

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