Surgical diamond wheels for minimally invasive surgery in bone resection under small quantity of coolant supply
Surgical diamond wheels for minimally invasive surgery in bone resection under small quantity of coolant supply
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用于微创骨切除手术中少量冷却剂供应的外科金刚石砂轮
DOI：
10.1016/j.precisioneng.2018.09.015
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Urara SATAKE and Toshiyuki ENOMOTO
中科院分区：
文献类型：
--
作者：
75.Takeru MIZUTANI;Urara SATAKE and Toshiyuki ENOMOTO
使用微型球端金刚石砂轮（外科医生称为金刚石车针）进行骨磨削广泛用于骨骼手术切除。在骨切除过程中，会产生大量磨削热，这会对包括神经在内的邻近组织造成热损伤。为了解决这个问题，已经开发了几种类型的对策，例如灌溉，即冷却剂供应方法；然而，现有措施无法抑制过多的热量产生。在我们之前的研究中，我们研究了骨磨削的特性，发现骨屑在砂轮表面的强烈粘附促进了磨削点温度的升高。为了防止粘附，我们提出了两种类型的金刚石砂轮，即二氧化钛 (TiO2) 颗粒沉积砂轮和三氟甲基表面处理砂轮，并发现此类砂轮降低了磨削引起的温升。在实验中，作为冷却剂的盐水的供应速率设置为180mL/h，这是手术中通常采用的。然而，供给量导致操作可视性较差，因此强烈需要降低供给量以提高可视性。为了满足这一要求，对商业和先前开发的砂轮在少量冷却剂供应下的磨削性能进行了研究。根据这些发现，开发了具有疏水性多孔表面的新型金刚石砂轮。与商业和先前开发的轮子相比，在少量冷却剂供应下，这些轮子显着且稳定地抑制了骨温度升高。
Bone grinding with miniature ball-end diamond wheels, called diamond burs by surgeons, is widely used for surgical resection of bones. During bone resection, a considerable amount of grinding heat is generated, which can cause thermal injury to adjacent tissues, including nerves. To address this problem, several types of countermeasures such as irrigation, namely coolant supplying methods, have been developed; however, the existing measures cannot suppress the excessive heat generation. In our previous studies, we investigated the characteristics of bone grinding and revealed that strong adhesion of bone swarf on the wheel surface promoted the temperature increase at the grinding point. To prevent the adhesion, we proposed two types of diamond wheels, namely, titanium dioxide (TiO2) particles deposited wheels and trifluoromethyl surface-treated wheels and found that such wheels reduced the grinding-induced temperature elevation. In the experiments, the supply rate of saline as coolant was set to 180 mL/h, which is typically adopted in surgery. However, the supply rate leads to a poor operative visibility, and therefore the supply rate is strongly required to be reduced for improving the visibility. To meet the requirement, the grinding performances of the commercial and previously-developed wheels under small quantity of coolant supply were investigated. On the basis of the findings, new diamond wheels with hydrophobic porous surface were developed. These wheels significantly and stably suppressed bone temperature elevation compared to the commercial and previously-developed wheels under small quantity of coolant supply.