关节镜刨刀介绍课件.ppt

* The INCISOR (sloped outer like synovator can rest flat against surfac) and INCISOR Plus (straight cut with teeth, volume on outer window bigger, smaller sharper teeth more efficient for tough tissue, teeth don’t recommend near bone) families are distinguished by sharp teeth on the inner and outer blades. These help grab frayed tissue and draw it into the cutting window. For this reason many surgeons use it to resect frayed meniscal and bursal tissue. These blades include a rounded, open-end design which delivers side and end cutting and facilitates joint entry. The INCISOR blade’s cutting window is a teardrop shape, wider at the distal tip for efficient end cutting. The INCISOR PLUS blade includes an oval cutting window and sharper blades. * Smith Nephew offers 10 unique blade families which include over 125 shaver blades in a variety of diameters, lengths and configurations. Performance is influenced by factors including the size and shape of the cutting window; inner and outer edgeform design; and the shaft diameter, length and shape. As a general rule of thumb, more and sharper teeth, a large diameter blade and a wider cutting mouth result in the most aggressive resection. However, within this portfolio you will find the right blade for just about any job. * (left handed burrs)A variety of factors drive burr cutting efficiency including size - , 5.5mm burrs remove more tissue than 4.0mm devices; head design - long, barrel shapes used during acromioplasty, remove more tissue than the ball burrs used during notchplasty; flute sharpness and design – many flutes deliver controlled bone resection while few flutes product aggressive bone resection; and burr speed – faster speeds remove more tissue. 刨削刀及磨头介绍 正确选用刨刀… 软组织刨刀 外鞘静止 内鞘转动 内外鞘窗口都有锋利的仞 吸引 (连接到手持件), - 从关节间隙制造一个流出通路，利用这个通路使得软组织通过刨刀窗口开启而吸出 旋转的内鞘撕咬组织 (像剪刀) 组织像吞咽一样进入刨刀手柄然后从手柄吸出到吸引收集瓶 软组织刨刀 吸出 更多的吸出 – 更多的组织通过窗口吸入 – 更有效性 边缘 更多的锐齿, 大直径的刨刀, 更宽的窗口 - 更有效性 速度 高速 – 更多的切割 低速, 更多的组织需要时间去更大撕咬和吸引 单独的速度, 无法达到有效性 有