论文部分内容阅读
目的 根据负压在超声乳化手术空间内释放的实际终端效应是具有三维立体分布特征的吸力场 ,本研究在负压的传统脚踏板单维强度 (mmHg ,1mmHg =0 1 33Pa)控制平台的基础上 ,提出融合了基于超声乳化探头控制平台的对负压吸力场强度的空间分布、方向性及阻遏调控的负压多维控制模式 ;就其对提升负压终端效应的精确性及可控性的影响及相关的临床意义进行分析。方法 Ⅳ级硬核老年性白内障病例 1 70例 ( 1 74眼 )接受高负压 ( 2 0 0～ 2 50mmHg)主导下的劈核乳化术式 ,其中 91例 ( 94眼 )接受负压的多维控制模式 ,即在脚踏板控制负压单维强度 (mmHg)的基础上 ,通过调整乳化探头切面的朝向、灌注液流方向及超声靶物的相对位置 ,对负压吸力场进行吸力强度的立体分布、方向性及阻遏调控 ;另外 79例 ( 80眼 )是在传统脚踏板单维负压控制平台下完成的回顾性对照组 ;对术中发生负压相关的后囊膜吸触或吸破的发生阶段以及发生率进行组间差异性对比分析。结果 负压的多维控制模式使负压的实际终端吸力场效应能够更为适时、灵敏地与乳化探头的实际操作状态及操作环境相匹配 ,提升负压的整体控制精度 ,减少负压相关的后囊膜破裂的发生率 ( χ2 =5 4 1 ,P <0 0 2 )。结论 负压的多维控制模式涵盖两个控制平台 :( 1 )
The purpose of this study is to find out the three-dimensional distribution of the suction field in vacuum phacoemulsification space. In this study, the effect of vacuum pressure on the control platform of single-dimensional strength (mmHg, 1mmHg = 0 1 33Pa) Based on the above, a multi-dimensional model of negative pressure multi-dimensional control based on the control platform of phacoemulsification probe is put forward, which integrates the spatial distribution, directionality and deterrent regulation of negative pressure suction field strength. The accuracy and controllability The impact and related clinical implications were analyzed. Methods One hundred and seventy cases (174 eyes) of grade Ⅳ hard-core senile cataract underwent hack nuclear-phacoemulsification under the condition of high negative pressure (200 ~ 250 mmHg), of which 91 (94 eyes) underwent negative pressure multidimensional Control mode, which is based on the foot control one-dimensional strength of negative pressure (mmHg) on the basis of the emulsion probe by adjusting the orientation of the direction of the flow of perfusion fluid and the relative position of the ultrasonic target, the negative pressure suction field suction intensity Three-dimensional distribution, directionality and suppression of regulation; the other 79 cases (80 eyes) is a retrospective control group in the traditional single-pedal negative pressure control platform; negative pressure-related posterior capsule occlusion or Fistula stage and the incidence of incidence of differences between the groups comparative analysis. Results Negative pressure multi-dimensional control mode makes the actual terminal suction field effect of negative pressure more timely and sensitively match with the actual operation state and operating environment of the emulsion probe to enhance the overall negative pressure control accuracy and reduce the negative pressure related The incidence of capsular rupture (χ2 = 5 4 1, P <0 0 2). Conclusion Negative pressure multi-dimensional control mode covers two control platforms: (1)