I know there a Implants in the Medical Field who are used for Drug Delivery, I think such Implants could be easily self made.
You Need so Material who degrades in the Body under a very constant Speed, and which is not Toxic or has Toxic Metabolites.
You Mix This Material with your Chemical of Choice and your done with the implant itself.
Could this work?
What does this Community think about this Idea?
Wish you all a nice Day!