Medical tools used before 1865 in hospitals to help save lives and reduce pain and infection. Back then medical tools caused people to get infections such as the bone chain and amputation saw. Bloodletting fleam was used to draw blood and it caused infection and was used when not needed, we now have a better way to solution to drawing blood in a safer way does not cause infection or anything esle. Nowadays present medical tools don't cause any injections since we are able to disinfect them as well, it's less dangerous than it was back then. As for medical tools used during birth they were originally just a chair so that it can be easier. The same ideas used for birthing are the same as what is used today such as the Miraculous Chair, today they have made it more comfortable as well as easier to see more elevated for Doctors. With all these medical tools upgraded the impact on society is huge to helping others in all sorts of ways including give birth, infections, amputation, dental care, and draw blood without any side effects at the moment.