Miniature ball-end diamond wheels are widely used for bone grinding in endoscopic surgeries. During bone grinding, a considerable amount of heat is generated, which can cause thermal injuries to the tissues adjacent to bone, including nerves. In our previous studies, it was revealed that the strong adhesion of bone chips on the wheel surface promotes heat generation. To prevent adhesion, a surface-treated wheel was proposed, and it reduced the temperature elevation. However, we found that the proposed wheel cannot stably suppress the temperature elevation because the wheel effect depends on the coolant supply rate. In this study, a bone grinding method that stably suppresses temperature elevation was investigated. Based on the obtained findings, a cooling method using cold air was developed, and the temperature elevation was stably suppressed under a cold air supply.

微型球形端金刚石砂轮广泛用于内窥镜手术中的骨磨。在骨头研磨过程中，会产生大量的热量，这可能会对骨头附近的组织（包括神经）造成热伤害。在我们以前的研究中，发现骨屑在车轮表面上的牢固粘附会促进热量的产生。为了防止粘附，提出了一种表面处理过的车轮，它降低了温度升高。但是，我们发现所提出的车轮不能稳定地抑制温度升高，因为车轮效应取决于冷却液的供应速度。在这项研究中，研究了稳定地抑制温度升高的骨磨方法。根据获得的发现，开发了一种使用冷空气的冷却方法，