Free/affordable bibliographic research I have some medical device ideas and I want some basic bibliographic research to assess feasibility and novelty. Is there a free or affordable service that can do this?
In the medical (and medical devices) field, pubmed is the place to go and the search is free. In most cases the abstracts should give enough hints on whether a paper might be relevant or not. 

You should check patent databases (just ask google about "free patent search") as well.