原位智能人工肛门的研制及其作用观察

Development of situ intelligent artificial anal sphincter and observation on its efficacy

摘要:

目的：研制一种具有生物反馈功能并符合人体工程学原理的原位人工肛门并观察其节制排便的效果。方法：通过新西兰兔结肠离体和在体实验，向肠管内注入生理盐水模拟大便的形成，观察人工肛门括约肌压力反馈和节制排便的效果。结果：反馈套囊的压力与肠内容物体积和肠管压力在一定范围内成正相关，人工肛门压力反馈系统能有效地反映肠内压的变化；L形人工肛门括约肌在单片机的调控下可以有效地节制排便。结论：该原位智能人工肛门能有效节制排便并准确地反馈肠内压。

Abstract:

Objective：To develop a ergonomics situ intelligent artificial anal sphincter（IAAS） with bio-feedback function and to observe its fecal continence function. Methods：Function of the IAAS was assessed in vitro and in vivo in New Zealand rabbits. Physiological saline was infused into the bowel to simulate the formation of stool. Simultaneously，function of the pressure feedback system and the bowel-restrained function of L-style artificial anal sphincter were observed. Results：Pressure of the feedback cuff was positively correlated with the pressure and volume of the bowel within a certain range；the pressure feedback system can reflect the change of the intraintestinal pressure effectively. L-style artificial anal sphincter can control fecal incontinence under the control of chip micro－computer. Conclusion：IAAS could efficiently maintain continence and reflect the change of the intraintestinal pressure.