套管
聚酰亚胺
硅油
硅酮
材料科学
生物医学工程
医学
外科
复合材料
图层(电子)
作者
Maximilian Hammer,Sonja Schickhardt,Donald J. Munro,Ramin Khoramnia,Alexander F. Scheuerle,Christian Mayer,Gerd U. Auffarth
出处
期刊:Retina-the Journal of Retinal and Vitreous Diseases
[Ovid Technologies (Wolters Kluwer)]
日期:2022-06-01
卷期号:42 (6): 1170-1175
被引量:3
标识
DOI:10.1097/iae.0000000000003432
摘要
The injection of high-viscosity silicone oil lengthens injection time. New polyimide cannulas offer a greater inner diameter than conventional metal cannulas at the same gauge. We compared the injection time for polyimide and metal cannulas at 23 G for a variety of silicone oils including a 12,500-mPas prototype oil.In this laboratory study, injection time was measured three times per cannula and per oil. Warming the oil before injection to up to 42°C was also evaluated. Finally, the feasibility of polyimide cannulas was tested in vitrectomized porcine eyes.The 23-G polyimide cannula mostly decreased injection times. The time to inject 5 mL of Siluron Xtra and Siluron 5000 decreased by 6:02 (76.9%) minutes (483 vs. 121 seconds) and 12:01 (74.7%) minutes (973 vs. 252 seconds), respectively. Although the 23-G metal cannula failed to inject 12,500 mPas oil, 5 mL was injected in 10:21 minutes using the polyimide cannula. Prewarming Siluron 5000 to 42°C lowered the injection time by 9.0% and by 12.1% when using the metal or polyimide cannula, respectively.Polyimide cannulas allow a clinically relevant decrease in injection time. They may not only shorten surgery time but could also ease the use of next-generation ultra-high-viscosity silicone oils. Prewarming silicone oil leads to decreased injection times.
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