Reliability of AMS M700 inflatable penile prosthesis

Area of Science:

• Urology
• Biomedical Engineering

Background:

• Implantable medical devices are crucial for treating conditions like erectile dysfunction.
• The AMS M700 inflatable penile prosthesis is a widely used treatment option.

Purpose of the Study:

• To evaluate the long-term outcomes and patient satisfaction with the AMS M700 inflatable penile prosthesis.
• To assess the mechanical reliability and complication rates associated with the device.

Main Methods:

• A retrospective follow-up study of 290 patients implanted with the AMS M700 prosthesis.
• Data collection included device survival, mechanical failures, and patient-reported satisfaction rates.
• Life table analysis was used to determine device survival probability.

Main Results:

• The study followed 290 patients for at least one year, with subsets followed for longer periods.
• Mechanical failures were rare (3 cylinder failures due to sutures), with no reservoir or pump malfunctions.
• A revision in tubing manufacturing in 1983 eliminated slow leak issues; post-revision, no further leaks occurred.
• Three-year device survival probability was 97.9%, and patient satisfaction exceeded 90%.

Conclusions:

• The AMS M700 inflatable penile prosthesis exhibits excellent long-term mechanical reliability and durability.
• High patient satisfaction rates underscore the device's efficacy in treating erectile dysfunction.
• The study confirms the AMS M700 as a safe and effective treatment option with a low complication profile.