Royston D D, Torres J H, Thomsen S, Sriram P S, Welch A J
Food and Drug Administration, Rockville, MD 20857, USA.
Lasers Surg Med. 1995;16(2):189-96. doi: 10.1002/lsm.1900160209.
Sapphire and sculpted silica fiber scalpels were evaluated for performance as they aged. Performance was determined by measuring their useful lifetime, forward transmission, incision depth, and the thermal coagulation thickness at the sides and bottom of the incision. STUDY DESIGN/MATERIALS, AND METHODS: Aging was performed with a chicken breast model. Performance measurements were made at periodic intervals. Sapphire scalpels were cooled with air or saline.
The air-cooled, frosted sapphire scalpels had the longest useful lifetime, whereas the saline-cooled, frosted sapphire scalpels had the shortest. Aging deteriorated the forward transmission of the sculpted silica fiber scalpels the most. Little difference was found between the averages of all incision measurements. Two of the saline-cooled, frosted sapphire scalpels fractured during the aging process.
Aging influences the scalpel lifetime, but there was no evidence that the aging process significantly affected the incision size.
评估蓝宝石和雕刻石英光纤手术刀随使用时间增长的性能。通过测量其使用寿命、向前传输能力、切口深度以及切口两侧和底部的热凝厚度来确定性能。研究设计/材料与方法：采用鸡胸模型进行老化处理。定期进行性能测量。蓝宝石手术刀用空气或盐水冷却。
风冷磨砂蓝宝石手术刀的使用寿命最长，而水冷磨砂蓝宝石手术刀的使用寿命最短。老化对雕刻石英光纤手术刀向前传输能力的影响最大。所有切口测量平均值之间差异不大。两把水冷磨砂蓝宝石手术刀在老化过程中发生断裂。
老化会影响手术刀的使用寿命，但没有证据表明老化过程会显著影响切口大小。
