Saudi Electronic University Medical Devices History Discussion

I need brief history of major changes in these medical devices over the years (pictures for devices, pic for inventor or developer for each stage of the development) for the following medical devices: 1- pacemaker 2-defibrillator 3- ventilator 4- ultra sound 5- MRI 6- artificial joints 7- incubator 8- syringe pump 9- artificial ventricle. please focus on pictures of devices and inventor or developer with brief summery of each stage.