Any technological progress in health tech worsen disparities, because when it's new, it's expensive. The more the tech is ground breaking, the more the disparity because the effect is so drastic for the money.
It’s also sometimes needlessly expensive when companies make excess profits on medical gear. It’s up to governments (is really) to help everyone get access to improved care.
Medical device companies have very high gross profit margins but net profit margins around 7%, which is pretty typical for high tech manufacturing. That suggests that there isn't much in the way of excess profit.
"Overall annual medical liability system costs, including defensive medicine, are estimated to be $55.6 billion in 2008 dollars, or 2.4 percent of total health care spending."
Doesn't mean we should not improve health tech.