Shanghai Institute for Minimally Invasive Therapy, School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, China.
Minim Invasive Ther Allied Technol. 2022 Apr;31(4):595-602. doi: 10.1080/13645706.2020.1867585. Epub 2021 Jan 8.
This paper reports the design of a powered stapler for gastrointestinal anastomosis and evaluates its performance. The proposed stapling instrument is intended to simplify and optimize the current procedure of mechanical stapling, while providing controllable operation for the powered stapling procedure, such as conditioning the tissue to the right stage before firing of the stapler.
The feasibility and efficacy of the prototype were assessed by experiments with porcine small intestine segments, where the tissue conditioning operation, burst pressure of the stapled intestine samples, and staple malformation rate were examined.
The functionality of the developed powered stapler was validated, where the theoretical, numerical, and experimental results agree well with each other. The preliminary results indicated that the proposed tissue conditioning operation could lower the clamping pressure with a maximum level of 1.35 g/mm. The average burst pressure of the stapled segments (16 samples) is 6.37 kPa, and the maximum malformation rate of the tested groups (five groups, each group with 90 staplers) was 5.56%.
The developed novel tissue conditioning procedure could reduce the pressure response of the intestine tissue samples. The proposed powered stapler proves effective for performing gastrointestinal anastomosis procedures.
本文介绍了一种用于胃肠吻合的电动吻合器的设计，并评估了其性能。所提出的吻合器械旨在简化和优化当前的机械吻合过程，同时为电动吻合过程提供可控制的操作，例如在吻合器击发前将组织调节到适当的阶段。
通过对猪小肠段的实验，评估了原型的可行性和功效，检验了组织预处理操作、吻合肠段的爆破压力和吻合钉变形率。
所开发的电动吻合器的功能得到了验证，理论、数值和实验结果吻合良好。初步结果表明，所提出的组织预处理操作可以将夹压力降低至最大 1.35g/mm。16 个吻合段的平均爆破压力为 6.37kPa，五个测试组（每组 90 个吻合钉）的最大变形率为 5.56%。
所开发的新型组织预处理程序可以降低肠组织样本的压力响应。所提出的电动吻合器可有效地进行胃肠吻合手术。
