THE NOVEL USE OF HIGH-FLOW POLYIMIDE CANNULAS TO IMPROVE SILICONE OIL INJECTABILITY IN VITREORETINAL SURGERY.

Retina (Philadelphia, Pa.) Pub Date : 2022-06-01 DOI:10.1097/IAE.0000000000003432

Maximilian Hammer, Sonja K Schickhardt, Donald Munro, Ramin Khoramnia, Alexander Scheuerle, Christian S Mayer, Gerd U Auffarth

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引用次数: 3

Abstract

Purpose: 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.

Methods: 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.

Results: 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.

Conclusion: 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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新型高流量聚酰亚胺套管改善玻璃体视网膜手术中硅油的可注射性。

目的:注射高粘度硅油延长注射时间。新型聚酰亚胺套管比相同口径的传统金属套管具有更大的内径。我们比较了聚酰亚胺和金属套管在23 G下对各种硅油的注射时间，包括12500 - mpas的原型油。方法:在本实验室研究中，测量注射时间，每个套管和每个油三次。在注射前将油加热至42°C也进行了评估。最后，在玻璃体切除的猪眼中验证了聚酰亚胺套管的可行性。结果:23-G聚酰亚胺套管明显减少注射次数。注射5ml Siluron Xtra和Siluron 5000所需时间分别缩短了6:02 (76.9%)min (483 vs. 121 s)和12:01 (74.7%)min (973 vs. 252 s)。23-G金属套管虽然未能注入12500 mPas油，但聚酰亚胺套管在10:21分钟内注入了5 mL。将Siluron 5000预热至42℃，使用金属套管或聚酰亚胺套管时，注射时间分别缩短9.0%和12.1%。结论:聚酰亚胺套管可减少临床相关的注射时间。它们不仅可以缩短手术时间，还可以简化下一代超高粘度硅油的使用。预热硅油可减少注射次数。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Retina (Philadelphia, Pa.)

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