新型克氏针降低骨坏死率
Hollow Notched K-Wires for Bone Drilling With Through-Tool Cooling
使用中空凹槽设计的克氏针降低钻骨时温度
Journal of Orthopaedic Research, 2019, 37(11).
摘要：
Kirschner wire (K-wire) is a common tool in clinical orthopedic surgery for bone fracture fixation. A significant amount of heat is generated in bone drilling using K-wires, causing bone thermal 热的necrosis 坏死and osteonecrosis. To minimize the temperature rise, a hollow洞，中空notched有缺口的 K-wire in a modified改进 surgical hand drill with through-tool cooling was developed to study the bone temperature, debris evacuation, and material removal rate. The hollow notched K-wire was fabricated by grinding and micro-milling on a stainless steel tube. Bone drilling tests were conducted to evaluate its performance against the solid K-wires. Results showed that compared with solid K-wires, hollow notched K-wire drilling without cooling reduced the peak bone temperature rise, thrust force, and torque by 42%, 59%, and 62% correspondingly相应的. The through-tool compressed air reduced the peak bone temperature rise by 48% with the forced air convection and better debris evacuation. The through-tool water cooling decreased the bone temperature by only 26% due to accumulation and blockage of bone debris in the groove and channel凹槽. This study demonstrated the benefit of using the hollow notched K-wire with through-tool compressed air to prevent the bone thermal necrosis.
有道翻译：
克氏针(K-wire)是临床骨科手术中常用的骨折固定工具。使用k线钻骨时产生大量热量，导致骨热坏死和骨坏死。为了使升温降至最低，我们在改良的手钻中设计了一种空心切口k形金属丝，并通过工具冷却来研究骨温、碎片清除和材料去除率。通过对不锈钢管的磨削和微铣削加工，制备了空心k形切口钢丝。进行了骨钻试验，以评估其性能对固体k线。结果表明，与实心k线相比，不加冷却的空心开槽k线钻孔，其峰值骨温升、推力和扭矩分别降低了42%、59%和62%。通径压缩空气使骨温峰值升高降低48%，强制空气对流和更好的碎片清除。过刀水冷却使骨温仅降低26%，这是由于骨碎片在沟槽和通道内的堆积和堵塞所致。本研究证实了利用空心切口k形钢丝与穿透工具压缩空气防止骨热坏死的好处。