The transmitter is not a permanent implant.

This Aachen keratoprosthesis (Aachen-KPro) is developed to be used as permanent implant to restore vision in corneal blind patients.

Unlike other devices such as hip or breast implants, mesh embeds into the tissue and is designed to be a permanent implant.

In 10 patients, radiotherapy was delivered by a permanent implant of iodine-125 (median activity 13 mCi).

But hundreds, if not thousands, who elected to undergo surgery suffered chronic and debilitating acute pain as the supposedly permanent implants eroded.

Conclusion: The effect of tumor repopulation is not negligible in determining the LQ parameters for prostate cancer, especially for the low-dose-rate permanent implants.