Inoue Makoto, Shinoda Kei, Shinoda Hajime, Suzuki Kotaro, Kawamura Ryosuke, Ishida Susumu
Department of Ophthalmology, Keio University School of Medicine, Keio University School of Medicine, Tokyo, Japan.
Am J Ophthalmol. 2007 Aug;144(2):302-4. doi: 10.1016/j.ajo.2007.03.046.
To report a 25-gauge trocar-cannula that enhances wound closure and reduces the incidence of postoperative hypotony.
Development of surgical instruments.
A 25-gauge cannula with a microvitreoretinal (MVR) blade trocar was constructed. The resistance of inserting this trocar cannula was compared with that of the conventional 25-gauge trocar cannula (Alcon Laboratories; Fort Worth, Texas, USA). Vitreous surgery was performed on 55 eyes with the trocar cannula with an oblique sclerotomy incision, and the results were compared with those from 68 eyes that underwent surgery with the conventional trocar cannula.
The resistance of inserting the trocar cannula was less than that with the conventional trocar cannula. A temporary hypotony (intraocular pressure [IOP] <6 mm Hg) was found in one eye (2%) with the trocar cannula and in 12 eyes (18%) with the conventional trocar cannula (P = .006, Fisher exact probability test).
The trocar cannula with a MVR blade was effective in postoperative wound closure and prevention of postoperative hypotony.
报告一种25号套管针，其可增强伤口闭合并降低术后低眼压的发生率。
手术器械研发。
构建一种带有微型玻璃体视网膜（MVR）刀片套管针的25号套管针。将这种套管针的插入阻力与传统25号套管针（美国德克萨斯州沃思堡市爱尔康实验室生产）的插入阻力进行比较。使用该套管针经斜向巩膜切口对55只眼进行玻璃体手术，并将结果与68只使用传统套管针进行手术的眼的结果进行比较。
该套管针的插入阻力小于传统套管针。使用该套管针的1只眼（2%）出现暂时性低眼压（眼压[IOP]<6 mmHg），而使用传统套管针的12只眼（18%）出现暂时性低眼压（P = .006，Fisher精确概率检验）。
带有MVR刀片的套管针在术后伤口闭合及预防术后低眼压方面有效。
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