Clinical Surgery Department, Medical College, São Paulo University, São Paulo, Brazil.
Thoracic Surgery Department, Santa Marcelina Hospital, São Paulo, Brazil.
Surg Endosc. 2022 Feb;36(2):1683-1687. doi: 10.1007/s00464-021-08889-x. Epub 2021 Nov 29.
Nowadays the majority of the surgical procedures are video surgeries. Despite technological advances, some problems remain. The buildup of residues in front of the lens is an example of this problem. To solve it, Abreu et al. (Surg Technol Int 26:43-47, 2015) developed LacrimaSurg, which works as a lacrimal duct in the optics preventing fogging and residues buildup on it. This had 98.1% of efficiency in an experimental study.
Study feasibility and safety of the device under real surgical conditions.
A pilot study included 30 patients undergoing thoracic procedures using LacrimaSurg. Procedures were recorded for further analysis by investigators. The characteristics of patients (age, sex, body mass index, Charlton comorbidity index), data of environment (Temperatures variances), and data of procedures (type of surgery and duration of it) were recorded. The investigators watched the videos and recorded the residue buildup and fogging events that impaired surgeon's vision. The number of times the optics got dirty, need for further jets of crystalloid solution, and need for mechanical cleaning were collected to evaluate efficacy. Comparative serum measurements of electrolytes before and after surgery were studied. Data were organized and analyzed by simple linear correlations and t test for continuous variables and Fisher's test for categorical variables.
The use of the device allowed 97% of the procedures to be performed without interruption. No characteristics inherent to the patients or to the procedures that lead to fogging or filth of the optics were identified. There were no statistically significant differences between pre- and postoperative serum ions, and no postoperative complications related to the use of the device were observed.
The device was effective in preventing interruption of surgical procedures due to dirt or fogging, its use was considered safe, and did not cause postoperative complications.
如今，大多数外科手术都是视频手术。尽管技术有所进步，但仍存在一些问题。镜头前的残留物堆积就是一个例子。为了解决这个问题，Abreu 等人（《外科技术国际》26：43-47，2015）开发了 LacrimaSurg，它在光学上充当泪道，防止镜头起雾和残留物堆积。在一项实验研究中，它的效率达到了 98.1%。
在实际手术条件下研究该设备的可行性和安全性。
一项试点研究纳入了 30 名接受胸腔手术的患者，他们使用了 LacrimaSurg。研究人员对手术过程进行了记录，以便进一步分析。记录了患者的特征（年龄、性别、体重指数、Charlton 合并症指数）、环境数据（温度变化）和手术数据（手术类型和持续时间）。研究人员观看视频，并记录了影响外科医生视线的残留物堆积和起雾事件。记录了光学器件变脏的次数、需要进一步喷射晶体溶液的次数以及需要机械清洁的次数，以评估疗效。研究了手术前后电解质的血清测量值。数据通过简单线性相关性和连续变量的 t 检验以及分类变量的 Fisher 检验进行组织和分析。
该设备的使用使 97%的手术得以顺利进行，没有中断。没有发现导致镜头起雾或变脏的患者或手术固有特征。手术前后血清离子无统计学差异，且未观察到与设备使用相关的术后并发症。
该设备可有效防止因污垢或起雾而中断手术，使用安全，且不会引起术后并发症。
