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首页> 外文会议>Biomedical Engineering Meeting, 2009. BIYOMUT 2009 >The influence of the bladder geometry to the bladder pressure and urine flow
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The influence of the bladder geometry to the bladder pressure and urine flow

机译：膀胱几何形状对膀胱压力和尿流的影响

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Urinary bladder having a function of storing urine, covered by mucosa and having muscle layer on its wall is a global organ. There are two main functions of the bladder. 1-Storing urine with low-pressure as possible until the maximum filling capacity, 2-during urination absolutely excreting the urine by maximum compressive force. The common factors excreting the bladder are compressive force of the bladder and flow resistance caused by the factors belonging prostate and urethra. Nowadays, bladder geometry as an additional factor is discarded because all bladders are assumed to have a standard spherical shape. In this study, it is observed that the geometry obtained by MRI sagittal section differs from patient to patient. The bladder has a pineal shape and differs to a spherical shape as the patient age increases. Therefore, the study planned that the shape can be a factor affecting the urine flow. Since clinical data include urethral and prostate dependent factors, computer simulation of the urinary bladder is done and the effect of the bladder geometry on urine flow is estimated. It is observed that the bladder having pineal shape provides more pressure and flow rate than the bladder having spherical shape in clinical data. Therefore, bladders having pineal and spherical shape are simulated using Fluent software which performs finite element method and the flow rates and pressures are measured. As a result, It is observed that bladder having pineal shape has a more flow rate and pressure.
机译：具有储尿功能，被粘膜覆盖并且其壁上具有肌肉层的膀胱是整体器官。膀胱有两个主要功能。 1-尽可能以低压方式存储尿液，直到最大填充量为止； 2-在排尿过程中，通过最大压缩力将尿液绝对排泄。排泄膀胱的常见因素是膀胱的压力和由前列腺和尿道的因素引起的流动阻力。如今，由于假定所有膀胱均具有标准球形，因此不再考虑将膀胱几何形状作为附加因素。在这项研究中，观察到通过MRI矢状切面获得的几何结构因患者而异。膀胱具有松果形状，并且随着患者年龄的增加而不同于球形。因此，研究计划形状可能是影响尿流的一个因素。由于临床数据包括尿道和前列腺依赖性因素，因此完成了膀胱的计算机模拟，并估算了膀胱几何形状对尿流的影响。在临床数据中观察到，具有松果形状的膀胱比具有球形的膀胱提供更多的压力和流速。因此，使用执行有限元方法的Fluent软件模拟了具有松果状和球形形状的膀胱，并测量了流量和压力。结果，观察到具有松果形状的膀胱具有更大的流量和压力。

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