Well, what I understood about how does it work is that to implant the dispositive the surgeon cut the sperm conduct and fit the to ends qith que dispositive so when you turn the botton in the valve it activates a barrier that blocks the pass in the sperm conducts but :
when the valve is open, does the sperm has to pass by a camera (space between the to ends of the sperm conduct) ?
The barrier works like I explained or the sperms never touch the material ?
Had you made some tests of sperm activity using the device ? I had looked for some articles that talk about the effects of external materials issues when they had contact with sperms like reducing the sperm activity, causing inmune response and causing the sperm doesn´t fertilize the ovum.
if you have an image of the internal function of the device it would be really useful.