Prototype Spacer for Water-filled Laparoendoscopic Surgery Based on Reversible Structural Alteration between Two- and Three-dimensional Shapes
Prototype Spacer for Water-filled Laparoendoscopic Surgery Based on Reversible Structural Alteration between Two- and Three-dimensional Shapes
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基于二维和三维形状之间可逆结构改变的充水腹腔镜手术原型垫片
DOI：
10.11239/jsmbe.54.76
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发表时间：
2016
影响因子：
--
通讯作者：
伊藤智義
中科院分区：
文献类型：
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作者：
佐野麻理恵;鈴木啓介;角江崇;石井琢郎;五十嵐辰男;土井俊祐;藤田伸輔;中山弘敬;下馬場朋禄;伊藤智義
与开腹手术相比，内窥镜下手术具有创伤小、出血少、患者痛苦小等优点，为精确手术提供了广阔的视野。为了更好地保存正常组织和灵活利用超声成像，充水腹腔镜手术(Wafles)得到了积极的研究。在Wafles中，腹腔内充满了生理盐水，而不是注入二氧化碳气体。循环灌注液为器官保持理想的湿度和温度，并提供清晰的内窥镜观察。由于浮力效应，手术中器官漂浮，容易移动，但手术视野周围的器官往往会影响外科医生的视野。我们提出了一种基于二维和三维形状的可逆结构改变的新型手术隔膜，它被设计成通过一个单一的小切口插入并在腹膜腔内独立扩张。我们设计和制造了由聚氯乙烯和聚对苯二甲酸乙二酯制成的间隔物的原型，并测试了它们的结构强度。原型展示了在Wafles条件下，承受来自治疗区域周围器官的压力所需的强度。
Surgery under endoscopic vision has advantages such as lower invasiveness, less bleeding, and less pain for patients, providing expanded vision for precise operation compared with open abdominal surgery. To improve preservation of normal tissue and flexible utilization of ultrasound imaging, water-filled laparoendoscopic surgery (WaFLES) has been actively researched. In WaFLES, the abdominal cavity is filled with saline instead of insufflated with carbon dioxide gas. The circulating irrigating solution maintains desirable moisture and temperature for organs as well as provides a clear endoscopic view. By buoyancy effect, the organs are floating and easy to move during surgery, but organs around the surgical field often affect the surgeon's view. We propose a novel surgical spacer for WaFLES based on reversible structural alteration between two-and threedimensional shapes, which is designed to be inserted through a single small incision and expanded in the abdominal cavity independently. We designed and fabricated prototypes of the proposed spacer made of polyvinyl chloride and polyethylene terephthalate, and tested their structural strengths. The prototypes demonstrated the required strength to withstand the forces loaded from organs around the treated area under WaFLES conditions.