Problem to be solved: to provide an adhesion promoting device capable of preventing or suppressing an adhesion promoting device from adhering to the surrounding biological organ.The healing promotion device 100 according to the present inventionHaving a body part 10 that promotes the healing of biological tissueBody sectionA first region 10a, at least a portion of which is disposed between one of the bonded portions of the body to be joined and the other joining siteA second region 10B formed on the outer side of the first region of the body part andAndThe second area isA reduction portion 20 is provided which separates the second region from the first region so as to reduce the area of the body portion from the outside of the radial direction R toward the inside.Diagram【課題】癒合促進デバイスが周囲の生体器官と癒着することを防止又は抑制することが可能な癒合促進デバイスを提供する。【解決手段】本発明に係る癒合促進デバイス100は、生体組織の癒合を促進する本体部10を有し、本体部は、接合対象となる生体器官の一方の被接合部位と他方の被接合部位との間に少なくとも一部が配置される第1領域10Aと、本体部の第1領域よりも外方側に形成された第2領域10Bと、を有し、第2領域は、本体部の面積を径方向rの外方から内方に向けて減少させるように第2領域を第1領域から分離可能にする減少部20を備える。【選択図】図1