Pumping and edema

[OregonStrong]

I’m a pretty advanced pumper at this stage, I pump 2 to 3 times a day for years and zero negative effects on my implant. Find the right sized cylinder and wear a cock ring over your nuts that will keep them from getting sucked into the cylinder

[Doggedly_positive]

For example, let's say that you pump up the cylinders to 80 kPa, then use a VED, pumping it up to 20 kPa of vacuum, which is minus 20 kPa.

The total differential pressure is thus increased to 100 kPa, but the pressure in the cylinders is still nominally 80 kPa.

In practice, because of the very slight additional stretching of the tissues, the pressure in the cylinders may well fall to 79 kPa, making the total differential 99 kPa. Not a lot of difference.

What a VED will also do is tend to pull the cylinders axially outward because of the net pressure acting on the cross-sectional area of the penis.

This apparent lengthening is only illusory and temporary, because with the removal of the partial vacuum, the cylinders will settle back into the crus.

I appreciate the explanation. I understand the basic physics here. I'm assuming the same is not true for malleables...

The other danger with a VED is having a ball get sucked up into the VED cylinder.

Very painful!

Before my malleable implant, I experimented with VEDs. I had a ball get sucked in once, and I panicked. It hurt. So bad.

Malleables would not exert any outward pressure on the tissues, so the only stretching would be due to the partial vacuum.

[Kodixx]

This question is for those who use VED post-op. When I asked my Dr about that, he said they work hard to get the sizing (length of implant and number of RTE's) just right so there's no floppy glans and so the tips don't go too far into the glans. So he cautioned that anything that would stretch the length of the tissue might make the cylinders/RTE's too short for the stretched space. As a result I haven't used VED post-op, which is ok for me because I'm ok with the sizing.

Has anyone had an issue like that ? Or is it your experience that the length of the cylinders seem to expand enough to keep the sizing (length) ok with the glans ?

- Chuck

[ElbowRoom]

The VED pressures I see here from other users seem low. I have a medical grade pump that goes to 18 in/Hg which is 80 Kpa and 8psi. I have another consumer-grade pump that can go much higher than that (though I generally don't).