This isn't a formal declaration of rule making, or legislation, simply a declaration of intent from the Prime Minister. There's no formal weight behind this (except probably to start getting internal government bodies working on policy).
There's lot of time and room for sane (or dumb) rules to come out of this.
Medical (and similar) use exceptions are common. For example RoHS initially had a medical device exemption (and still has an implantable device exemption).
Of course they're not going to require that hospitals re-use syringes and the like.
I don't think legitimate medical uses of single use plastics are at risk here, as long as no reasonable alternative exists.
speaking of, what is the scientific evidence like for banning single use plastics? eg. the uk and denmark government found that single use plastic bags aren't worse for the environment than paper bags.
https://assets.publishing.service.gov.uk/government/uploads/...
It seems like in practice this will basically amount to a ban on plastic straws and grocery bags.
A lot of the issue is that we haven't been really using market approaches to deal with it. If the creators where financially a physically responsible for the proper recycling, they would be motivated to use less and make it cheaper to reuse. The current recycling makes the problem a municipal one, in many places, who are ill equipped to deal with it... then we end up shipping it elsewhere.
So, yeah, I’m confident medical stuff will be on the exception list. At the same time, I know of folks that need continuing supplies for their care, such as wound care, but know none personally. Even my thing eventually ended.