PROBLEM TO BE SOLVED: To provide a mat for internal organ protection capable of smoothly extracting an internal organ or interconnecting a living body and an internal organ while keeping a state of cooling the internal organ.SOLUTION: The mat comprises: a heat exchange surface which abuts on an internal organ and performs heat exchange with the internal organ; a fluid conduit which includes a heat-transfer fluid adjusted to a temperature lower than the temperature of the internal organ in healthy time and performs heat exchange with the internal organ via the heat exchange surface; and a lumen standby part which is provided at the heat exchange surface and has a lumen projecting out of the internal organ or included in the living body inserted therethrough.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】臓器を冷却した状態を維持しつつ、円滑に臓器の摘出又は生体と臓器の接続が可能な臓器保護用マットを提供する。【解決手段】上記課題を解決するため、この発明は、臓器に当接し、臓器との間で熱交換を行う熱交換面と、臓器の健常時の温度より低温に調節された伝熱流体を内包し、熱交換面を介して臓器と熱交換を行う流体管路と、熱交換面に設けられ、臓器から突出する、あるいは生体内の管腔が挿通される管腔待機部とを備える。【選択図】 図1