Loewenstein A, Rader R S, Shelley T H, de Juan E
Johns Hopkins Microsurgery Advanced Design Laboratory (MADLAB), Wilmer Ophthalmological Institute, Johns Hopkins Hospital, Baltimore, MD 21287, USA.
Ophthalmic Surg Lasers. 1997 Sep;28(9):774-5.
Injection of fluids or drugs into the subretinal space is often necessary during subretinal surgery. The authors have developed a flexible micro-cannula for subretinal surgery that can be used for submacular injection of drugs or for atraumatic hydrodissection of the retina. The novel features of the soft tip include reduced diameter (200 microns), increased length, and material selection for resistance to tip buckling. The authors have used this cannula following pars plana vitrectomy for 14 patients with subfoveal choroidal neovascularization secondary to age-related macular degeneration (13 patients) and angioid streaks (1 patient). The cannula creates a relatively atraumatic retinotomy and allows an efficient, controlled injection of subretinal fluid. This micro-cannula seems to be a valuable tool for the subretinal infusion of fluids or drugs.
在视网膜下手术期间，常常需要向视网膜下间隙注射液体或药物。作者研发了一种用于视网膜下手术的柔性微插管，可用于黄斑下药物注射或视网膜的无创水分离。软尖的新颖特性包括减小的直径（200微米）、增加的长度以及用于抵抗尖端弯曲的材料选择。作者在14例年龄相关性黄斑变性继发中心凹下脉络膜新生血管形成的患者（13例）和1例血管样条纹患者中，于玻璃体平坦部玻璃体切除术后使用了这种插管。该插管可形成相对无创的视网膜切开，并能实现视网膜下液的高效、可控注射。这种微插管似乎是用于视网膜下输注液体或药物的一种有价值的工具。
