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Biomedical subjects

A D Grüneberger

Publications and source records attributed to A D Grüneberger.

9 recordsLinked to original sources

[Magnetic closure with colposuspension in complicated recurrent incontinence].

The magnetic sphincter consists of a bow shaped retropubical implanted magnet, fixed on the inner rim of the symphysis. Another removable magnet is installed in the vagina, both gently closing the urethra. 31 patients with severe recurrent stress incontinence after repeated operations (hypotone urethra mean = 17 cm H2O upp rest, mean = 59 years) were operated on with the magnetic sphincter system. 16 patients have been operated with this method, getting a curing rate of 12.4 continent patients do not use to vaginal magnet because of complaints. This system has now been modified. The modification described herein consists of a colposuspension over the upper edge of the implanted magnet. With this modification, 12 of the patients became continent, 10 resulting from the colposuspension alone, 2 became adequately continent with the additional intravaginal magnet. The idea of a colposuspension over the upper edge of the magnetic implant is convincing by its success in recurrent stress incontinence, and gives the possibility to increase the continence rate by using the intravaginal magnet. The operation is easy to perform and the result effective.

Adult↗

[Development of a magnetic urethral closure device--an animal experiment study].

The new magnetic closure device consists of a retropubically implanted magnet and another removable intravaginal magnet, which gently closes the urethra. This system has shown its proper function in Merino sheep during a period of observation up to 33 weeks. The pressure on the tissue can be adjusted by the size and strength of the removable magnet. By using smooth-edged magnets, no necrosis of the vaginal wall and urethra could be observed.

Animals↗

[Modification of the use of a magnetic device for urethral occlusion in recurrent incontinence].

The magnetic closure device consists of a bow-shaped retropubically implanted magnet. Another removable magnet is situated in the vagina, thus gently closing the urethra. The modification described herein consists of colposuspension over the upper edge of the implanted magnet. Continence was thus achieved. The use of the intravaginal magnet was not necessary. The case report deals with the first two patients.

Female↗

[Clinical experiences with magnetic urethral closure].

The new magnetic closure device consists of a retropubically implanted magnet. Another removable magnet is situated in the vagina, when the patient is physically active and when continence is desired. The system has been used in 11 patients with up to 5 years follow-up observation.

Adult↗

[Development of a magnetic urethral closure and initial clinical experiences].

The new magnetic closure device consists of a retropubically implanted magnet and another removable intravaginal magnet, which gently closes the urethra. The system has shown its proper function in animal experiments up to an urethral pressure of 120 cm water pressure and in an animal model - female merino sheep - during a period of observation up to 33 weeks. The first experiences with a magnetic urethral closure system in female patients with recurrent urinary incontinence, when common incontinence surgery is useless (no descensus, extremely hypotone urethral), are promising. Continence can be achieved, the handling is easy and can be managed by intelligent and well motivated patients. The system has been used successfully in 7 patients carrying the magnet in the vagina over 8 h daily for up to 3 years.

Animals↗

A magnet system for urethral closure in females.

The magnetic/urethral-closure system consists of a retropubically implanted magnet, fixed to the inner rim of the symphysis pubica, and an intravaginal magnet which, by their mutual attraction, close the urethra. Magnetic force/distance characteristics of rare earth/cobalt magnets used for this purpose have been investigated with distances similar to those to be expected with the system in situ. Experiments on excised sheep urethra and bladder have shown proper function of the closure system up to a urethral pressure of more than 120 cm H2O. The system has also been tested in vivo in 16 Merino sheep.

Animals↗

A magnetic urethral closure device: preliminary report of an experimental study.

The new magnetic urethral closure system consists of a retropubically implanted magnet and another removable intravaginal magnet, thus gently closing the urethra. The device has shown its proper function in 12 sheep during a period of observation of up to 33 weeks. There were no technical defects. The pressure on the tissue can be modulated by the size and strength of the removable magnet and the pressure action time can easily be limited to the actual needs of the patient. Necrosis of the vagina wall and urethra have not been observed, using smooth-edged magnets.

Animals↗