The Artificial Sphincter

Author(s):  
John Christiansen
Keyword(s):  
2020 ◽  
Vol 64 (1-4) ◽  
pp. 1253-1259
Author(s):  
Minghui Wang ◽  
Hongliu Yu

Clamping devices with constant force or pressure are desired in medical device, such as hemostatic forceps and the artificial sphincter, to prevent soft tissues from injures due to overloading. It is easily obtained by stretching an SMA wire. However, studies with SMA bending round bar have seldom been reported before. This paper studied constant force characteristic of C-shaped round bar with shape memory alloys. Optimization designs of the components were carried out with computational simulation. Numerical results show that the phenomenon of constant force strongly depends on contour curve shape and geometric dimensions of the C-shaped round bar of SMA component.


2017 ◽  
Vol 84 (4) ◽  
pp. 263-266 ◽  
Author(s):  
Christophe Llorens ◽  
Tobias Pottek

Study Design This is a retrospective, non-randomised study. Objectives The aim of this study was to evaluate safety and efficacy of artificial urinary sphincter ZSI 375 inserted in male patients with stress urinary incontinence (SUI). Methods Between May 2009 and January 2017, 45 men with SUI underwent ZSI 375 device insertion. Operations were performed in two French centres by one surgeon. Complications and pad used to manage continence were recorded. Results From May 2009 to January 2012, 45 patients with a mean age of 70.42 years underwent placement of the ZSI 375 device in France. The most common cause for incontinence was radical prostatectomy (RP, 33/45 ­patients, 73.33%). The minimal period of incontinence was 6 months. Twenty-seven out of 45 patients (60.00%) had a severe incontinence (at least four pads per day), 13 patients (28.89%) had moderate incontinence (three pads per day) and five patients (11.11%) had two pads per day. With a long follow-up, the ZSI 375 device was considered to be successful in 73.33% patients after 5 years (60 months) and 72% of patients after 7 years (84 months). The infection rate was 2.2 % affecting one in 45 patients. Six out of 45 patients presented a urethral erosion (13.33%). Mechanical failure with a revision occurred in three patients (6.67%). Conclusions The ZSI 375 device is a safe and effective device to treat severe SUI in men.


2006 ◽  
Vol 63 (5) ◽  
pp. AB92
Author(s):  
Robert Ganz ◽  
Chris Gostout ◽  
Todd Berg

1989 ◽  
Vol 32 (5) ◽  
pp. 432-436 ◽  
Author(s):  
John Christiansen ◽  
Marianne Lorentzen

1996 ◽  
Vol 156 (2S) ◽  
pp. 622-624 ◽  
Author(s):  
Salvador Vilar C. Lima ◽  
Luiz Alberto P. Araujo ◽  
Fabio O. Vilar ◽  
Carmen L. Kummer ◽  
Eduardo C. Lima

2018 ◽  
Vol 44 (1) ◽  
pp. 114-120 ◽  
Author(s):  
Carlos Alberto Ricetto Sacomani ◽  
Stênio de Cássio Zequi ◽  
Walter Henriques da Costa ◽  
Bruno Santos Benigno ◽  
Rodrigo Sousa Madeira Campos ◽  
...  

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