PROBLEM TO BE SOLVED: To provide a brain model for training for surgical operation, serving as a brain model for surgical operation training for doctors who are required to have a high level skill, such as, surgical operation and having a kinetic properties (hardness and elasticity) that are similar to those of actual human brain.SOLUTION: The brain model is composed of synthetic polymeric materials, and is so configured that a monomer solution is cast into a mold material, reproducing a brain tissue surface form and swollen with water after thermal reaction. The brain model recreates with high accuracy the physical structure (solid form and surface form) and physical properties (hardness and viscoelasticity) of the brain tissue, and makes all the surgical site in a brain surgery reproducible. Especially, for the monomer solution, acrylic acid added with a material, obtained by adding N,N-methylenebisacrylamide (MBA) as a cross-linking agent, added with ammonium persulfate (APS) as an initiator, and further, polymerization reaction is carried out by heating is used. Thus, a brain model whose texture is similar to that of actual brain can be manufactured.COPYRIGHT: (C)2009,JPO&INPIT【課題】手術など高度な技能が要求される医師の手術訓練用脳モデルとして、実際の人体の脳と力学的特性(硬さや弾性)が類似した手術訓練用脳モデルを提供する。【解決手段】合成高分子材料から成る脳モデルであって、脳組織表面形状を再現した型材にモノマー溶液を流し込み、加熱反応後に水で膨潤させた構成とし、脳組織の物理的構造(立体形状や表面形状)と物理的特性(硬さや粘弾性)を高精度に再現し、脳外科手術における全ての術部を再現可能とする。特に、モノマー溶液は、アクリル酸に、架橋剤としてN,N’-メチレンビスアクリルアミド(MBA)を加え、開始剤として過硫酸アンモニウム(APS)を加え、更に加熱により重合反応させたものを用いることで、実際の脳の質感に近似している脳モデルを作製することができる。【選択図】図1
