Physique des matériaux et continence urinaire à l’effort féminine : nouveaux concepts : I) l’élasticité sous la vessie

Guerquin, Bernard

doi:10.1016/j.jgyn.2015.03.001

Cited by 3 publications

(3 citation statements)

References 15 publications

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“…The shape of the flexible ring was chosen so as to not compromise blocking the impact of the elasticity under the bladder. Out of necessity, the dimensions of this ring exceed those of the rigid part so as to correspond to the different dimensions of the vaginal segments [2].…”

Section: Conceptualization Of the Intravaginal Devicementioning

confidence: 99%

“…The difference in the dimensions and viscoelastic properties of the suburethral and subvesical segments of the anterior vaginal wall may underlie the mechanisms of stress urinary incontinence [1][2][3]. To confirm this hypothesis, modeling of the effect of abdominal pressure on the bladder was used to create a new intravaginal device that allows this difference in the viscoelastic properties to be recreated.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Vaginal Viscoelasticity and Stress Urinary Incontinence: Therapeutic Application of an “Intelligent” Vaginal Device

Guerquin¹

2016

Mater. Sci. Eng. Adv. Res

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An intravaginal device to prevent urinary incontinence was devised based on the notions of the 'viscoelasticity of the anterior vaginal' wall. As the anterior vaginal wall can be divided into segments with differing viscoelastic properties, this device is comprised of two parts: a rigid component to treat the urethral side, and a flexible ring-shaped component to exploit thee lastic properties of the anterior vaginal wall in its horizontal portion under the bladder. The resulting device has the potential to address each stage of bladder function in women: straining, bladder filling, and micturition. These specifications ensure that the device is effective and well tolerated by patients. This is hence a new therapeutic approach for the managementof female urinary incontinence. The high efficiency of the device is a validation of the physiological notion of differential viscoelastic properties of the pelvis (and the anterior vaginal wall) on either side of the vaginal cap.

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Section: Conceptualization Of the Intravaginal Devicementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Vaginal Viscoelasticity and Stress Urinary Incontinence: Therapeutic Application of an “Intelligent” Vaginal Device

Guerquin¹

2016

Mater. Sci. Eng. Adv. Res

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“…Then the deepening of this approach helped to understand the vertical vaginal wall (VVW) and the horizontal vaginal wall (HVW),the two segments of the anterior vaginal wall on either side of the vaginal cap (VC), had different viscoelastic behaviour due to their dimensions. Later on, the difference in elasticity caused shock absorption under the bladder, which tempered and delayed the increase of pressure in the bladder in relation to the increase in abdominal pressure [4].250 milliseconds exists between the increase in recorded pressures in the urethra at the junction of the middle 1/3and the lower 1/3, and the rise in intravesical pressure [5]. The excess weight in morbid obesity acts as a competing force saturating and cancelling out this damping function, and creating a regressive functional incontinence after a weight loss [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Stress Urinary Incontinence: A Passive Pelvis Adaptation?

MICHY¹

2016

Mater. Sci. Eng. Adv. Res

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In this theoretical paper, the concepts of elasticity are applied to the whole of the pelvic anatomy. A certaindifference in elasticity between the two sides of the vaginal cap could be the root cause of the adaptation of vesicourethral and vaginal structures under stress. Under abdominal pressure, the significant posterior elasticityof pelvis allows the bottom and the back tilt of the anterior wall of the horizontal vagina and its propulsion forward. The suspension of the anterior vaginal wall as a bridge suspension propels the vaginal cap forwardand upwards in a pendulum mode. This movement allows the sliding backwards and downwards of the bladder neck, and the creation of tension in the vertical suburethral vaginal wall by pulling it up and making it more rigid. The forward movement of the neck compresses the Retzius space, which increases the pressure therein. This increased pressure pushes back the only weak point of the walls of the Retzius space, the segment of the anterior vaginal wall located just above the pelvic diaphragm and pubourethral ligaments. This is followed by distal locking of middle urethra, the most effective mechanism of urinary continence under stress. On the whole, this theory assumes a totally passive adaptation of the urogenital system under stress which is through mechanisms that trigger each other in a descending cascade. The active role of pelvic muscles would then be only a secondary one in strengthening this passive urogenital adaptation to stress.

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Vaginal development during 2nd gestational trimester: translational study in human female fetuses with disorders of the neural tube

Ribeiro-Julio

Vieiralves

Sampaio

et al. 2022

Arch Gynecol Obstet

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Physique des matériaux et continence urinaire à l’effort féminine : nouveaux concepts : I) l’élasticité sous la vessie

Cited by 3 publications

References 15 publications

Vaginal Viscoelasticity and Stress Urinary Incontinence: Therapeutic Application of an “Intelligent” Vaginal Device

Vaginal Viscoelasticity and Stress Urinary Incontinence: Therapeutic Application of an “Intelligent” Vaginal Device

Stress Urinary Incontinence: A Passive Pelvis Adaptation?

Vaginal development during 2nd gestational trimester: translational study in human female fetuses with disorders of the neural tube

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