目的准分子激光原位角膜磨镶术(laser in situkeratomileusis,LASIK)瓣下冲洗是手术成功的关键之一,在术中利用现有的工具做到完美的瓣下冲洗并非易事。本研究介绍一种新型的瓣下冲洗针头的研制与应用。方法我们所用的针头前端呈扁平状...目的准分子激光原位角膜磨镶术(laser in situkeratomileusis,LASIK)瓣下冲洗是手术成功的关键之一,在术中利用现有的工具做到完美的瓣下冲洗并非易事。本研究介绍一种新型的瓣下冲洗针头的研制与应用。方法我们所用的针头前端呈扁平状,与针头体部成90°直角,共有三个孔,一个和普通针头一样在顶部,另两个在针头前端扁平部,在LASIK手术中,当针头连接注射器时,三个孔同时出水冲洗层间。结果相比较于普通针头,我们所使用的冲洗针头确实有效,并缩短了手术时间,术后随访24 h内术眼主诉明显疼痛与流泪的百分率从44.44%下降到13.77%。结论临床证明,使用这样的针头确实能够达到如下目的:缩短手术时间,获得更成功的层间冲洗,使角膜瓣更快地愈合,获得更完美的手术效果。展开更多
AIM: To determine which modification to a vascular puncture needle results in increased visualization during ultrasound (US)-guided vascular puncture. METHODS: We evaluated US images of a phantom made of degassed gela...AIM: To determine which modification to a vascular puncture needle results in increased visualization during ultrasound (US)-guided vascular puncture. METHODS: We evaluated US images of a phantom made of degassed gelatin and each of the following four modified versions of a commercially available vascular puncture needle (18 G): re-cut needle, dimple needle, rough-surface needle (rough over the sections of needle located 3-6 mm from the tip), and a needle with four side holes (side holes covered by the sheath). An unmodified commercially available puncture needle was used as a control. Five interventional radiologists evaluated image quality according to the following classification grade:?I, invisible; II, poor; III, moderate; IV, good; V, excellent. RESULTS: The highest score for needle visualization was obtained for the needle with four side holes. The re-cut needle scored the same as the control. Multiple comparisons were conducted using overall evaluation scores among the commercially available needle, dimple needle, rough-surface needle (3-6 mm), and the needle with four side holes. A significantly higher score was obtained for the needle with four side holes (P < 0.05/6). CONCLUSION: The needle with four side holes was prominently visualized and gained a significantly higher score (compared with the other needles) in a phantom evaluation.展开更多
文摘目的准分子激光原位角膜磨镶术(laser in situkeratomileusis,LASIK)瓣下冲洗是手术成功的关键之一,在术中利用现有的工具做到完美的瓣下冲洗并非易事。本研究介绍一种新型的瓣下冲洗针头的研制与应用。方法我们所用的针头前端呈扁平状,与针头体部成90°直角,共有三个孔,一个和普通针头一样在顶部,另两个在针头前端扁平部,在LASIK手术中,当针头连接注射器时,三个孔同时出水冲洗层间。结果相比较于普通针头,我们所使用的冲洗针头确实有效,并缩短了手术时间,术后随访24 h内术眼主诉明显疼痛与流泪的百分率从44.44%下降到13.77%。结论临床证明,使用这样的针头确实能够达到如下目的:缩短手术时间,获得更成功的层间冲洗,使角膜瓣更快地愈合,获得更完美的手术效果。
文摘AIM: To determine which modification to a vascular puncture needle results in increased visualization during ultrasound (US)-guided vascular puncture. METHODS: We evaluated US images of a phantom made of degassed gelatin and each of the following four modified versions of a commercially available vascular puncture needle (18 G): re-cut needle, dimple needle, rough-surface needle (rough over the sections of needle located 3-6 mm from the tip), and a needle with four side holes (side holes covered by the sheath). An unmodified commercially available puncture needle was used as a control. Five interventional radiologists evaluated image quality according to the following classification grade:?I, invisible; II, poor; III, moderate; IV, good; V, excellent. RESULTS: The highest score for needle visualization was obtained for the needle with four side holes. The re-cut needle scored the same as the control. Multiple comparisons were conducted using overall evaluation scores among the commercially available needle, dimple needle, rough-surface needle (3-6 mm), and the needle with four side holes. A significantly higher score was obtained for the needle with four side holes (P < 0.05/6). CONCLUSION: The needle with four side holes was prominently visualized and gained a significantly higher score (compared with the other needles) in a phantom evaluation.
