This major is called medical engineering/biomedical engineering (engineering) in universities.
Category: Engineering-Electrical Information-Biomedical Engineering/Medical Device Engineering.
You can search on the "Choose a University" website:
Shanghai Institute of Medical Devices of "University of Shanghai for Science and Technology" is such a specialized university.
In addition, one Zhejiang University and two Taishan Medical Colleges are relatively good universities in this major.