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Related Experiment Videos

Hardness evaluation of penile prostheses.

Shyh-Jen Wang1, Kuang-Kuo Chen, Alex Tong-Long Lin

  • 1Division of Experimental Surgery, Department of Surgery, Taipei Veterans General Hospital, and Department of Urology, School of Medicine, National Yang-Ming University, Taipei, Taiwan. wangsj@vghtpe.gov.tw

International Journal of Urology : Official Journal of the Japanese Urological Association
|June 15, 2006
PubMed
Summary

Penile prosthesis rigidity, measured by hardness and buckling force, is crucial for device performance. Understanding these mechanical properties aids clinicians and patients in selecting and using penile implants effectively.

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Area of Science:

  • Biomedical Engineering
  • Urology
  • Materials Science

Background:

  • Penile prostheses are implanted to treat erectile dysfunction.
  • Understanding the mechanical properties of penile prostheses is essential for optimal function and patient satisfaction.

Purpose of the Study:

  • To investigate the hardness and buckling force of penile prostheses.
  • To assess penile prosthesis rigidity before and after implantation.

Main Methods:

  • Evaluated inflatable and semi-rigid penile prostheses, including one post-implantation.
  • Measured hardness using a Shore Durimeter and buckling force with a push-pull gauge.
  • Assessed penile hardness in a volunteer with an inflatable prosthesis during varying pumping cycles.

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Main Results:

  • Hardness and buckling force showed a strong correlation in penile prostheses.
  • Continuous pumping beyond the hardness limit increased material tension and risk of mechanical failure.
  • Buckling force in semi-rigid prostheses decreased with length and increased with diameter.

Conclusions:

  • Mechanical measurements of penile prosthesis rigidity offer valuable insights for clinicians pre-implantation.
  • These findings enhance patient understanding of prosthesis usage and limitations post-implantation.