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Related Experiment Videos

Inflatable penile prosthesis: site-specific malfunction analysis.

B B Garber1

  • 1Division of Urology, The Graduate Hospital, Philadelphia, Pennsylvania, USA. bgarber@comcast.net

International Journal of Impotence Research
|February 28, 2003
PubMed
Summary

Device failure analysis of Mentor Alpha I inflatable penile prostheses revealed distinct malfunction sites. Scrotal implants commonly experienced tubing fractures, while infrapubic devices often had cylinder or reservoir issues.

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Area of Science:

  • Urology
  • Biomedical Engineering
  • Medical Device Analysis

Background:

  • Inflatable penile prostheses are used for erectile dysfunction.
  • Mentor Alpha I is a specific model requiring reliability assessment.
  • Understanding device failure modes is crucial for improving patient outcomes.

Purpose of the Study:

  • To retrospectively analyze the exact sites of device failure in Mentor Alpha I inflatable penile prostheses.
  • To identify differences in malfunction locations between infrapubic and scrotal implantations.

Main Methods:

  • Retrospective review of operative reports for 442 patients implanted over 12 years.
  • Inclusion of patients with documented device malfunction and re-evaluation by the author.
  • Analysis of failure sites based on implant position (infrapubic vs. scrotal).

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Main Results:

  • 22 (4.98%) patients experienced device malfunction.
  • Malfunctions occurred in 3.9% of infrapubic and 5.6% of scrotal devices.
  • Scrotal implants: tubing fractures at pump strain reliefs.
  • Infrapubic implants: cylinder or reservoir failures.

Conclusions:

  • Mentor Alpha I penile prosthesis failure sites differ based on implantation location.
  • Tubing fractures are common in scrotal devices; cylinder/reservoir issues in infrapubic devices.
  • This analysis can guide manufacturers in improving device reliability and surgeons in operative planning.