Can you Identify comma splice, run-on, fragment or correct sentences?

1) One particular design gave the English language several phrases still in use today.
2) Allowed the prematurely buried to yell for help.
3) The tube also permitted food and drink to be served to the awakened corpse while he or she was awaiting exhumation.
4) Some designs included flags or lights as signaling devices others were outfitted with heaters and stocked with food and beverages.
5)Today, of course, medical science is more advanced, we have more confidence in our doctor's abilities to recognize death.