What is the field of study that was founded in the 70's that aims to tackle arguments and moral issues that may arise in the medical technology application?

Possibly this:

https://www.google.com/search?sxsrf=ALeKk01StNsX79ZRFhWVUpSqnnNNXDZ4Lg:1588683893454&q=medical+ethics&sa=X&ved=2ahUKEwiMrITZ5JzpAhVSmeAKHbTAA-YQ1QIoA3oECA0QBA&biw=1433&bih=702

Your text is your best source of this type of information, though.