What communication protocols are used in medical equipment nowadays?

Nowadays, many medical equipments use CAN to do communication, especially foreign products are more widely used, such as CT machine, ultrasound machine, respiratory machine and so on. I was involved in a project to make a syringe pump device for Siemens CT machine, and the product was using CANOpen protocol for communication, and I used XGATE-COP10 module to transform the original device into a CANOpen slave device to meet the requirements of the project.