Novel, Remotely Controlled, Artificial Urinary Sphincter: A Retro-Compatible Device

Hached, Sami; Loutochin, Oleg; Corcos, Jacques; Garon, André

doi:10.1109/tmech.2013.2280575

Cited by 14 publications

(9 citation statements)

References 41 publications

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“…The mechanical action of the sphincter is usually also defined to ensure continence in the case of high‐pressure conditions in the bladder (Hached et al . ; Singla et al . ).…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of the biomechanics of urethral tissues and structures

Natali

Carniel

Frigo

et al. 2016

Experimental Physiology

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New Findings r What is the central question of this study?Prostheses for treatment of urinary incontinence elicit complications associated with an inadequate mechanical action. This investigation aimed to define a procedure addressed to urethral mechanical characterization. Experimental tests are the basis for constitutive formulation, with a view to numerical modelling for investigation of the interaction between the tissues and a prosthesis. r What is the main finding and its importance?Horse urethra, selected for its histomorphometric similarity to human urethra, was characterized by integrated histological analysis and mechanical tests on the biological tissue and structure, leading to constitutive formulation. A non-linear, anisotropic and time-dependent response was found, representing a valid basis for development of a numerical model to interpret the functional behaviour of the urethra.Urinary dysfunction can lead to incontinence, with an impact on the quality of life. Severe dysfunction can be overcome surgically by the use of an artificial urinary sphincter. Nonetheless, several complications may result from inappropriate functioning of the prosthesis, in many instances resulting from an unsuitable mechanical action of the device on the urethral tissues. Computational models allow investigation of the mechanical interaction between biological tissues and biomedical devices, representing a potential support for surgical practice and prosthesis design. The development of such computational tools requires experimental data on the mechanics of biological tissues and structures, which are rarely reported in the literature. The aim of this study was to provide a procedure for the mechanical characterization of urethral tissues and structures. The experimental protocol included the morphometric and histological analysis of urethral tissues, the mechanical characterization of the response of tissues to tensile and stress-relaxation tests and evaluation of the behaviour of urethral structures by inflation tests. Results from the preliminary experiments were processed, adopting specific model formulations, and also providing the definition of parameters that characterize the elastic and A. N. Natali and others viscous behaviour of the tissues. Different experimental protocols, leading to a comprehensive set of experimental data, allow for a reciprocal assessment of reliability of the investigation approach.

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“…The mechanical action of the sphincter is usually also defined to ensure continence in the case of high‐pressure conditions in the bladder (Hached et al . ; Singla et al . ).…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of the biomechanics of urethral tissues and structures

Natali

Carniel

Frigo

et al. 2016

Experimental Physiology

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“…Hached et al developed an artificial urinary control system based on hydraulic and control modules and used Bluetooth for wireless communication [2]. They also tried to deploy ultra low power RF link in MICS band for better performance.…”

Section: Related Workmentioning

confidence: 99%

Design of wireless real time artificial sphincter control system for Urinary Incontinence

Ramesh

Raj

Kalavampra

et al. 2014

2014 International Symposium on Technology Management and Emerging Technologies

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Urinary Incontinence is the most common health problem in old people, autistic kids and diabetic patients with significant social and economic impact in the quality of life. According to WHO, 20 million people are affected by Urinary Incontinence. This paper proposes an integrated architecture to continuously monitor the patients' bladder and remotely trigger the wireless artificial sphincter system using wireless power transfer in real time. After analysis, a few Ionic Electro Active Polymers (EAP) were selected to physically control the urethra. Possible designs using EAP polymer for urethra control are elaborated in this paper. This paper analyzes the major challenges of wireless power and data transfer and its impact on the design of the complete system. The proposed system provides a solution to continuously monitor the bladder and send alert messages to the control system that's on the patient's body. On receiving these alerts, patients' will remotely trigger the artificial sphincter control system to release the urine from their bladder. Thus the patients or caregivers can monitor the pressure inside their bladder and control urinal flow remotely by opening and closing the ionic EAP clip from outside. The system design has been simulated and tested with its different parameters and its results are discussed in this paper.

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“…Data on our prototype pressure regulation hardware -the wireless connection device and different energy supply systems -have already been reported recently in engineering journals. [14][15][16] In the present article, we describe these three distinctly developed systems from clinicians' viewpoints and in a language accessible to non-engineers. We focus mainly on pressure issues associated with each of them in in-vitro and ex-vivo experiments.…”

Section: Introductionmentioning

confidence: 99%

Montreal electronic artificial urinary sphincters: Our futuristic alternatives to the AMS800™

Biardeau

Hached

Loutochin

et al. 2017

CUAJ

Self Cite

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Introduction: We aimed to present three novel remotely controlled hydromechanical artificial urinary sphincters (AUSs) and report their in-vitro and ex-vivo results. Methods: We successively developed three distinct hydromechanical AUSs on the basis of the existing AMS800 ™ device by incorporating an electronic pump. No changes were made to the cuff and balloon. The AUS#1 was designed as an electromagnetically controlled device. The AUS#2 and AUS#3 were conceived as Bluetooth 2.1 remotely controlled and Bluetooth 4.0 remotelycontrolled, adaptive devices, respectively. In-vitro experiments profiled occlusive cuff pressure (OCP) during a complete device cycle, with different predetermined OCP. Ex-vivo experiments were performed on a fresh pig bladder with 4 cm cuff placed around the urethra. Leak point pressure with different predetermined OCP values was successively measured during cystometry via a catheter at the bladder dome. Results: Our in-vitro and ex-vivo experiments demonstrated that these three novel AUSs provided stable and predetermined OCP -within the physiological range -and completely deflated the cuff, when required, in a limited time compatible with physiological voiding cycles. Conclusions: Our three novel, remotely controlled AUSs showed promising results that should be confirmed by in-vivo experiments focusing on efficacy and safety.

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Novel, Remotely Controlled, Artificial Urinary Sphincter: A Retro-Compatible Device

Cited by 14 publications

References 41 publications

Experimental investigation of the biomechanics of urethral tissues and structures

Experimental investigation of the biomechanics of urethral tissues and structures

Design of wireless real time artificial sphincter control system for Urinary Incontinence

Montreal electronic artificial urinary sphincters: Our futuristic alternatives to the AMS800™

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