Department of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, China.
Shanghai BJ-KMC Medical Technology Co., Ltd., Shanghai, China.
J Orthop Surg Res. 2020 Feb 21;15(1):62. doi: 10.1186/s13018-020-01596-8.
Arthroscopic shavers play an indispensable role in arthroscopic debridement. They have exquisite structures and similar designs. The purpose of this study was to establish a reproducible testing protocol to compare the resection performance and the quality (tensile strength, torsional strength, and corrosion resistance) of different arthroscopic shavers with comparable designs. We hypothesized that there could be little difference in resection performance and quality between these shavers.
Incisor Plus Blade (IPB; Smith & Nephew, Andover, MA) and Double Serrated Plus Blade (DSPB; BJKMC, Shanghai, China) were selected for resection performance and quality test. For resection performance testing, the resection torque, which is the minimum torque required to cut off silicone blocks with the same cross-sectional area, was measured to evaluate the resection performance of shaver blades when the other factors remain the same. For quality testing, tensile and torsion tests of the shavers' joint part were performed, and ultimate failure load and maximum torque were measured and compared. The corrosion resistance of these blades was assessed by the boiling water test based on the ISO13402.
No significant difference existed in the resection torque between the shaver blades of IPB and DSPB (P = 0.54). To the failure load of shavers' joint parts, IPB was significantly higher than DSPB, both in the outer and inner blades (P < 0.0001). The maximum torque of the joint part had no significant difference between IPB and DSPB (for inner blades P = 0.60 and outer blades P = 0.94). The failure load (for both IPB and DSPB P < 0.0001) and maximum torque (for IPB P = 0.0475 and DSPB P = 0.015) of the inner blades were higher than those of the outer blades. No blemishes were observed on the surface of the blades after corrosion resistance tests.
This study provided some new methods to evaluate the resection performance and quality of different shavers. The resection performance, the torsional strength of the joint part, and the corrosion resistance of IPB and DSPB may show comparable properties, whereas the tensile strength of the shavers' joint part showed some level of difference.
关节镜刨削器在关节镜清创术中发挥着不可或缺的作用。它们结构精巧，设计相似。本研究旨在建立一种可重复的测试方案，以比较具有相似设计的不同关节镜刨削器的切除性能和质量（拉伸强度、扭转强度和耐腐蚀性）。我们假设这些刨削器在切除性能和质量方面可能没有什么差异。
选择 Incisor Plus Blade（IPB；Smith & Nephew，安多弗，MA）和 Double Serrated Plus Blade（DSPB；BJKMC，上海）进行切除性能和质量测试。在切除性能测试中，测量切除扭矩，即切断具有相同截面积的硅橡胶块所需的最小扭矩，以评估在其他因素保持不变的情况下，刨削器叶片的切除性能。在质量测试中，对刨削器关节部分进行拉伸和扭转试验，测量并比较最终失效负载和最大扭矩。根据 ISO13402，通过沸水试验评估这些刀片的耐腐蚀性。
IPB 和 DSPB 的刨削器叶片的切除扭矩之间没有显著差异（P=0.54）。对于刨削器关节部分的失效负载，IPB 明显高于 DSPB，内外刀片均如此（P<0.0001）。内外刀片的关节部分的最大扭矩没有显著差异（内刀片 P=0.60，外刀片 P=0.94）。内外刀片的失效负载（均为 P<0.0001）和最大扭矩（内刀片 P=0.0475，外刀片 P=0.015）均高于外刀片。腐蚀试验后，刀片表面未见瑕疵。
本研究提供了一些新的方法来评估不同刨削器的切除性能和质量。IPB 和 DSPB 的切除性能、关节部分的扭转强度和耐腐蚀性可能表现出相似的特性，而刨削器关节部分的拉伸强度则表现出一定程度的差异。
