I would first Google and see if medtronic has some FAQ or something to these kinda of questions. But the first thing I thought of is using something similar to this: https://www.amazon.com/dp/B01EAS3ER8/ref=cm_sw_r_cp_apa_i_F4PzFbVX8ZDHD
I don't know if it would work or if it's even a good idea to try and find a plunger-like thing but it would beat tweezers and digging into your arm if it truly is in there