Had anyone got experience of a vacuum dressing following mastectomy?

I had this post my double mastectomy on each breast. It is called a pico dressing. It was kept on for a week and removed with the drains. It wasn’t painful (although I’m numb over each breast) and sometimes made a low sucking or humming noise. This was only once in a while and not constant. The actual “pack” attached to the dressing can be clipped to a post of bra when moving. I hope this helps. 
Helen

Hi, I had a mastectomy the week before last and have a Pico 14 dressing on, due to be removed tomorrow. It's been fine tho I did have a issue with the sticky strips peeling back causing the unit to beep a lot but this was fixed with some new sticky strips. Any questions just ask x