Toksvig-Larsen S, Ryd L, Lindstrand A
Department of Orthopaedics, University Hospital, Lund, Sweden.
J Bone Joint Surg Br. 1991 Jan;73(1):13-5. doi: 10.1302/0301-620X.73B1.1991747.
A saw blade was made from two standard oscillating blades which were fixed to each other with channels between, so that cooling fluid could be directed to the saw teeth. The blade was connected to a standard arthroscopy pump which delivered a flow of 80 ml/min through the blade. The performance of this blade was compared with that of a standard saw blade, cutting ox-bone in the laboratory. Irrigation of the standard saw blade with saline delivered by a syringe only slightly diminished the maximum temperature. Pumped irrigation was more effective but required large volumes of fluid. The heat generated by the internally cooled saw blade was negligible and the temperatures achieved (19 degrees C to 34 degrees C) fell well below the critical level for bone death (44 degrees C to 47 degrees C).
锯片由两片标准的摆动锯片制成，两片锯片相互固定，中间有通道，以便冷却液能够导向锯齿。该锯片连接到一个标准的关节镜泵，该泵以每分钟80毫升的流量通过锯片输送液体。在实验室中，将这种锯片与标准锯片切割牛骨的性能进行了比较。用注射器注入生理盐水对标准锯片进行冲洗，只能略微降低最高温度。泵送冲洗更有效，但需要大量的液体。内部冷却锯片产生的热量可以忽略不计，所达到的温度（19摄氏度至34摄氏度）远低于骨坏死的临界水平（44摄氏度至47摄氏度）。
