Sometimes for a break from the 35 jabs a week - starts to sound a lot like that doesn't it?! I use a small canula device, developed for diabetic infusion.
I think they have to be bought privately and are around ?50 for a box of ten. The flexible line goes underneath the skin and there is a port through which you can put the needle, a bit like the cap on vials of insulin.
You can wear them for 4-5 days, and they give a great relief to the rest of your body from the daily jabs - here is the product link.
http://www.applied-medical.co.uk/insuflon.shtml
I have only tried using them in my stomach though, it might be worth printing the page and discussing it with your DSN, she might be able to prescribe them, or arrange a few as samples for you.
They are low profile and very durable during normal life, showering, under clothes etc, I've even swam and been to the gym in them.
There was another device I recall, the i-port a similar concept.