Pathway to Finite Element Analysis of Stress Urinary Incontinence Mechanics

2011 ◽  
Author(s):  
Thomas Spirka ◽  
Kimberly Kenton ◽  
Linda Brubaker ◽  
Margot Damaser
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Urinary Incontinence ◽  
Stress Urinary Incontinence ◽  
Bladder Pressure ◽  
Abdominal Pressure ◽  
Element Analysis ◽  
Urethral Closure Pressure ◽  
Bladder Contraction ◽  
Urethral Closure

Stress urinary incontinence (SUI), a condition that affects mainly women, is characterized by the involuntary leakage of urine caused by an increase in abdominal pressure in the absence of a bladder contraction that raises the vesical (bladder) pressure to a level that exceeds the urethral closure pressure.

scholarly journals Urethral closure occurs by recoiling, pressure transmission, and a guarding reflex

2020 ◽  
Vol 31 (11) ◽  
pp. 2447-2449
Author(s):  
Bo S. Bergström
Keyword(s):  
Urinary Incontinence ◽  
Stress Urinary Incontinence ◽  
Integral Theory ◽  
Female Stress Urinary Incontinence ◽  
Abdominal Pressure ◽  
Pressure Transmission ◽  
Urethral Closure

AbstractEnhörning’s abdominal pressure transmission theory (ET) is built on Pascal’s law of fluid pressures. A theory that rejects ET also rejects this basic physical law and cannot be considered scientifically sound. The integral theory (IT) of female stress urinary incontinence rejects ET. This issue is discussed from the viewpoint of the urethral hanging theory of female stress urinary incontinence (UHT).

Development of Biocompatible MEMS Wireless Capacitive Pressure Sensor

2005 ◽  
Vol 2 (4) ◽  
pp. 287-296
Author(s):  
Shankaran Janardhanan ◽  
Joan. Z. Delalic ◽  
Jeffrey Catchmark ◽  
Dharanipal Saini
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Resonant Frequency ◽  
Pressure Sensor ◽  
Impedance Matching ◽  
Pressure Sensors ◽  
Important Variable ◽  
Bladder Pressure ◽  
Capacitive Pressure Sensor ◽  
Element Analysis

The objective of this research was to develop a wireless pressure sensor useful for monitoring bladder pressure. The wireless sensor consists of an active capacitive element and an inductor coil. The changes in pressure are related to the changes in the resonant frequency of the internal sensor. The existing pressure sensors have inductors formed on both sides of the substrate. The changes in internal capacitance of these sensors are related to the changes in pressure by impedance matching of the internal LC circuit. The deviation in bladder pressure is an important variable in evaluating the diseased state of the bladder. The inductor designed for this application is a spirally wound inductor fabricated adjacent to the capacitor. The external sensing uses equivalent changes in internal LC. The resonant frequency of the internal sensor is defined by the deformation of the plate, causing the plate to touch the dielectric on the fixed capacitive plate, which is reflected as changes in capacitance(C). The deformation of the plate has been modeled using Finite Element Analysis. The finite element analysis optimizes the dimensions of the design. Remote sensing is achieved through inductive coupling and the changes in pressure are determined. The device is tested for pressures ranging from 0–150 mmHg, bladder pressure. The RF Telemetry system has been modeled using Sonnet. The frequency range is between 100–670 MHz which is in compliance to that specified by Federal Communications Commission (FCC) regulations.

Correlation between valsalva leak point pressure and maximal urethral closure pressure in women with stress urinary incontinence

2004 ◽  
Vol 15 (3) ◽  
pp. 194-197 ◽  
Author(s):  
Paulo Cezar Feldner ◽  
Leonardo Robson Pinheiro Sobreira Bezerra ◽  
Rodrigo Aquino de Castro ◽  
Marair Gracio Ferreira Sartori ◽  
Edmund Chada Baracat ◽  
...  
Keyword(s):  
Urinary Incontinence ◽  
Stress Urinary Incontinence ◽  
Leak Point Pressure ◽  
Maximal Urethral Closure Pressure ◽  
Valsalva Leak Point Pressure ◽  
Urethral Closure Pressure ◽  
Urethral Closure ◽  
Point Pressure

scholarly journals Stress Urinary Incontinence: Relative Importance of Urethral Support and Urethral Closure Pressure

2008 ◽  
Vol 179 (6) ◽  
pp. 2286-2290 ◽  
Author(s):  
John O.L. DeLancey ◽  
Elisa R. Trowbridge ◽  
Janis M. Miller ◽  
Daniel M. Morgan ◽  
Kenneth Guire ◽  
...  
Keyword(s):  
Urinary Incontinence ◽  
Stress Urinary Incontinence ◽  
Relative Importance ◽  
Urethral Closure Pressure ◽  
Urethral Closure ◽  
Urethral Support
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