Do I need new pump parts for new baby?

[NeyhaR]

I have a PISA, which I used regularly for DS until I found out I was pregnant with DD (6 months ago). Do I need to buy new parts for DD? I have extra membranes, but that's it... TIA!

[jgriffin]

I have new membranes, and I might buy new tubing for my PISA, but otherwise I plan to use all the old parts (I'm just using my Harmony hand pump for now).