Surgery retainer options

Short story:

I need a surgery safe retainer for flat helix that will cause the least irritation. Bioflex plastic? Silicone?

Backstory:

I'm going in for surgery in a few weeks and I've been told no jewelry which is fine, all my guys are healed to the point that I don't have to worry about them except my flat helix. My flat will be one year in July but it's been a pain in the a**hole the entire time, two rounds of antibiotics, and it finally just settled (Knock on wood) a month ago when the infection burst out the back and drained. I went from a 9mm to a 6mm in the span of days.

It's been a long road and there's finally a light at the end of the proverbial piercing tunnel, I really don't want to irritate it in any way. I have to take it out for the surgery, so I've been shopping retainers but I'm not entirely sure what the best option is that won't set me back healing wise. I've never used a retainer before but I'm assuming plastic is going to be easier to put in with my taper.