Calhoun John Teague, Redan Jay A
University of Central Florida College of Medicine, 400 Celebration Place, Suite A-140, Celebration, FL 34747, USA.
Florida Hospital, Celebration Health Nicholson center, CUCF College of Medicine, Celebration, Florida, USA.
JSLS. 2014 Jan-Mar;18(1):55-61. doi: 10.4293/108680813X13693422520431.
Surgeons constantly struggle with the formation of condensation on the lens of a laparoscope, which prolongs procedures and reduces visibility of the abdominal cavity. The goal of this project was to build a device that would direct a flow of carbon dioxide (CO2) into an open chamber surrounding the lens of a laparoscope, acting to keep moisture away from the lens and eliminate condensation.
The device isolates the lens of the laparoscope from the humid environment of the intraperitoneal cavity by creating a microenvironment of dry CO2. This was accomplished by building a communicating sleeve that created an open chamber around the distal 2 to 3 cm of the scope. Into this cavity, dry cool CO2 was pumped in from an insufflator so that the path of the gas would surround the lens of the scope and escape through a single outlet location through which the scope views the intraperitoneal cavity. This chamber is proposed to isolate the lens with a high percentage of dry CO2 and low humidity. The device was tested in 7 different adverse conditions that were meant to challenge the ability of the device to maintain the viewing field with no perceptible obstruction.
In all of the conditions tested, 25 trials total, the device successfully prevented and/or eliminated laparoscopic lens fogging.
The device designed for this project points to the potential of a simple and effective mechanical method for eliminating laparoscopic lens fogging.
外科医生一直面临腹腔镜镜头上形成冷凝水的问题，这会延长手术时间并降低腹腔的可视性。本项目的目标是构建一种装置，该装置能将二氧化碳（CO₂）气流导入围绕腹腔镜镜头的开放腔室，从而使水分远离镜头并消除冷凝水。
该装置通过营造干燥CO₂的微环境，将腹腔镜镜头与腹腔内的潮湿环境隔离开。这是通过构建一个连通套管来实现的，该套管在镜头远端2至3厘米处形成一个开放腔室。干燥的冷CO₂从气腹机泵入这个腔室，使气体路径围绕镜头，并通过镜头观察腹腔的唯一出口位置排出。该腔室旨在用高比例的干燥CO₂和低湿度来隔离镜头。该装置在7种不同的不利条件下进行了测试，这些条件旨在挑战该装置在无明显阻碍的情况下维持视野的能力。
在总共25次测试的所有条件下，该装置均成功防止和/或消除了腹腔镜镜头起雾。
为本项目设计的装置表明了一种简单有效的消除腹腔镜镜头起雾的机械方法的潜力。
