目的:研究23-,25-,3种不同玻璃体切除术系统的27号玻璃体切除术和27号玻璃体切除术,以告知手术技术。
方法:一项不涉及任何人类受试者的实验研究。
方法:9个玻璃体切除术(23个-,25-,和27号)来自爱尔康,荷兰眼科研究中心(DORC)测量Bausch和Lomb(B/L)。在尖端和距尖端15mm处使用电动位移进行测量。在每个位置进行了五次测量,并确保了完全的弹性变形。
方法:测量的主要参数是使玻璃体垂直向下偏转1毫米所需的力(克),在玻璃体尖端或15毫米的尖端。
结果:共进行90次测量。跨品牌,对于23号规格,B/L在尖端和15毫米点处显示出最小的刚度(8.0±0.3gf,67.3±1.0gf),25规格(6.8±0.3gf,60.5±0.4gf),和27规格(3.3±0.1gf,33.9±0.5gf)玻璃体。尽管在15毫米的点处,与23号的玻璃体相比,25号的玻璃体的刚度仅略有下降,这种差异对于Alcon具有统计学意义(P<0.001),DORC(P<0.001),B/L(P<0.001)。
结论:基于这项研究,25号钳口,虽然比27号口径的玻璃体大,比23号口径的玻璃体硬度小,可以在刚度和轨距之间提供有利的折衷。然而,外科医生的经验,preference,在进行最终的玻璃体切除术时,所进行的手术类型应该是最重要的。了解这些机械性能可以帮助外科医生在规格尺寸和玻璃体切除术系统之间进行选择,以优化其舒适度和效率。
To investigate the mechanical properties of 23-, 25-, and 27-gauge vitrectomy vitrectors across 3 different vitrectomy systems to inform surgical techniques.
An experimental study that did not involve any human subjects.
Nine vitrectors (3 each of 23-, 25-, and 27 gauge) from Alcon, Dutch Ophthalmic Research Center (DORC), and Bausch & Lomb (B/L) were measured. Measurements were performed using electroforce displacement at the tip and 15 mm from the tip. Five measurements were performed at each location, and fully elastic deformation was ensured.
The main parameter being measured was the force in grams (gf) necessary to deflect the vitrectors vertically downward by 1 mm, either at the tip of the vitrector or 15 mm from the tip.
A total of 90 measurements were performed. Across brands, B/L demonstrated the least stiffness at both the tip and at the 15-mm point for 23-gauge (8.0±0.3gf, 67.3±1.0gf), 25-gauge (6.8±0.3gf, 60.5±0.4gf), and 27-gauge (3.3±0.1gf, 33.9±0.5gf) vitrectors. Although there was only a small decrease in the stiffness in the 25-gauge vitrector compared with the 23-gauge vitrector at the 15-mm point, this difference was statistically significant for Alcon (P < 0.001), DORC (P < 0.001), and B/L (P < 0.001).
Based on this study, 25-gauge vitrectors, although larger than the 27-gauge vitrectors and less stiff than the 23-gauge vitrectors, may offer favorable compromise between stiffness and gauge size. However, surgeon experience, preference, and the type of surgery being performed should be paramount when making the final vitrector selection. Knowledge of these mechanical properties may aid surgeons in choosing between gauge size and vitrectomy system to optimize their comfort and efficiency.