The Origin Industries standard medical bay is a small room with an examination/operation table, a small cot, a sink, and cabinets stocked with many types of medicine and standard medical equipment. Though not enough for a larger ship, it is more than functional on smaller ships with very little crew.
Note that it is not really a good idea to perform complex surgeries in this type of medical bay, as all the supplies probably aren't available. This Medical bay is designed to be just enough for small surgeries, such as setting a broken arm or putting in stitches.