Atsuta Koji, Ozawa Soji, Shimojima Naoki, Shimono Tomoyuki, Susa Shigeru, Takei Takayoshi, Ohnishi Kouhei, Morikawa Yasuhide
Department of General and Gastrointestinal Surgery, School of Medicine, Fujita Health University, Japan.
Minim Invasive Ther Allied Technol. 2010 Jun;19(3):177-83. doi: 10.3109/13645701003644053.
Currently available master-slave manipulators cannot recognize the elasticity of organs or tissues. The aim of this study was to examine whether a newly developed haptic forceps using a linear motor could measure the elasticity of living organs using an animal model. We measured the elasticity values and the disruption limit values of rat organs using the new haptic forceps. The elasticity of the materials was calculated using the formula "power / position", with N/m as the unit. We successfully and reproducibly measured the changes in the elasticity values of various materials in real time. We were also able to perceive tactile changes transmitted through the forceps. The changes in gastrointestinal contraction were synchronized with the visually observed changes, and these changes were monitored and measured as elasticity values in real time using the forceps. The damage limits were also successfully measured. In conclusion, the new haptic forceps enabled highly sensitive, real-time measurements of elasticity in living rat organs. The use of this forceps enables the disruption limit values of organs to be measured, and the device could be useful for setting safety limits when grasping organs during endoscopic surgery.
目前可用的主从操纵器无法识别器官或组织的弹性。本研究的目的是检验一种新开发的使用线性电机的触觉镊子能否利用动物模型测量活体器官的弹性。我们使用这种新型触觉镊子测量了大鼠器官的弹性值和破坏极限值。材料的弹性通过“功率/位置”公式计算,单位为N/m。我们成功且可重复地实时测量了各种材料弹性值的变化。我们还能够感知通过镊子传递的触觉变化。胃肠收缩的变化与视觉观察到的变化同步,并且这些变化通过镊子实时监测并作为弹性值进行测量。破坏极限也成功测量出来。总之,新型触觉镊子能够对活体大鼠器官的弹性进行高度灵敏的实时测量。使用这种镊子能够测量器官的破坏极限值,并且该设备在进行内镜手术抓取器官时设定安全极限方面可能会很有用。