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Related Experiment Videos

Alloplastic replacement of the urinary bladder

D Rohrmann1, D Albrecht, J Hannappel

  • 1Department of Urology, Hospital of the University, RWTH Aachen, Germany.

The Journal of Urology
|December 1, 1996
PubMed
Summary

A novel silicone rubber prosthesis for bladder replacement demonstrated successful function and biocompatibility in a sheep model, offering a promising alternative to current urinary diversion methods.

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Area of Science:

  • Biomaterials Science
  • Urology
  • Surgical Innovation

Background:

  • Current bladder reconstruction often uses gastrointestinal segments, posing management challenges and unknown long-term effects.
  • Alloplastic replacements offer a potential alternative to biological grafts for urinary diversion.

Purpose of the Study:

  • To develop and evaluate a silicone rubber prosthesis for alloplastic urinary bladder replacement.
  • To assess the feasibility and efficacy of this artificial bladder in an animal model.

Main Methods:

  • Implantation of two silicone rubber prostheses into subcutaneous abdominal pockets in 5 sheep.
  • Connection of prostheses to kidneys and urethral stump, with a mean follow-up of 11.5 months.
  • Evaluation through blood chemistry, renal ultrasound, and histopathological examination.

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Main Results:

  • The artificial bladder achieved adequate capacity and reliable mechanical function.
  • Patent anastomoses to renal pelvis and urethra were maintained.
  • No morphological or functional deterioration of renal parenchyma was observed; excellent clinical results confirmed by histopathology.

Conclusions:

  • The silicone rubber bladder prosthesis shows promise for human bladder substitution.
  • Further development for standardized industrial production is required before human implantation.