1) I think you're confusing two episodes. One included McCoy helping a pregnant woman over rough terrain and up a mountain (The World is Hollow and I Have Touched the Sky), and another that featured a blind woman being transported for diplomatic reasons that took place entirely aboard the ship (Is There in Truth No Beauty?)

2) The series under discussion is 'Voyager', not the original series. The 'Best Original Series Episodes' discussion is here:

http://www.techrepublic.com/blog/geekend/the-five-best-star-trek-episodes-ever/8999