Manabu Nagasaka

Publications (3)1.75 Total impact

• Article: Dynamic measuring of physical properties for developing a sophisticated preoperative surgical simulator: how much reaction force should a surgical simulator represent to the surgeon?

  Masato Ogata, Kazuhide Makiyama, Takahiro Yamada, Manabu Nagasaka, Hiroyuki Yamanaka, Yoshinobu Kubota
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  ABSTRACT: The acquisition of physical quantities for a living body in surgery is an important and necessary step toward developing a sophisticated preoperative surgical simulator and its validation and navigation. We have developed a multimodal measuring device that minimizes interference with the movements of the surgeon. We conducted nephrectomy surgery using a laboratory animal and successfully acquired physical quantities. From this experiment, we have acquired the following preliminary result. The surgeon feels a gripping force from -3.5 to 4.4N at the handle of the forceps for dissection. We assume that this data is not far from that of a human.
  Studies in health technology and informatics 01/2013; 184:312-8.
• Article: Development of a patient-specific simulator for laparoscopic renal surgery.

  Kazuhide Makiyama, Manabu Nagasaka, Toru Inuiya, Kentaro Takanami, Masato Ogata, Yoshinobu Kubota
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  ABSTRACT: To describe the development of a patient-specific simulator for laparoscopic renal surgery. Image data of each patient scheduled to undergo laparoscopic renal surgery are captured by the simulator, enabling each patient's organs to be reproduced. The surgeon can carry out a preoperative "rehearsal" of the operation by using a simulator based on patient-specific data. The simulator is programmed to be adapted to both laparoscopic and retroperitoneoscopic surgery. The scope and the trocars can be located anywhere on the skin, and visualized on the monitor of the simulator. Dissection of the renal hilum can be simulated based in the anatomy of each patient. The haptic device of the simulator provides interactive resistance between the organs and surgical tools during the simulation. This patient-specific simulator has been developed with the purpose of providing surgeons with a practical training tool for laparoscopic renal surgery. Using specific data for each patient, the simulator enables surgeons to carry out a "rehearsal" operation.
  International Journal of Urology 05/2012; 19(9):829-35. · 1.75 Impact Factor
• Article: A development of surgical simulator for training of operative skills using patient-specific data.

  Masato Ogata, Manabu Nagasaka, Toru Inuiya, Kazuhide Makiyama, Yoshinobu Kubota
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  ABSTRACT: At the Advanced Medical Research Center at Yokohama City University School of Medicine, we have been developing a practical surgical simulator for renal surgery. Unlike already commercialized laparoscopic surgical simulators, our surgical simulator is capable of using patient-specific models for preoperative training and improvement of laparoscopic surgical skills. We have been evaluating the simulator clinically with the aim of using it in renal surgery training at Yokohama City University Hospital. The simulator can be applied to other types of laparoscopic surgery, such as gynecological, thoracic, and gastrointestinal. Here, we report on the technical aspects of the simulator.
  Studies in health technology and informatics 01/2011; 163:415-21.