Is a single hole multi-channel a category B

No. "Single port multichannel" refers to the application of multiple consecutive channels to a single port. This technology is widely used in a variety of medical devices and medical equipment, such as surgical instruments, catheter inserters, venous blood collection, puncture, and placement of stents. Single-hole multi-channel technology is not a Class B, but a special technology or design that belongs to medical devices. Class B medical devices are medical devices with higher risk or higher complexity, and the use of the product requires strict control and management by the medical organization, and the operator needs to have the appropriate professional skills and experience.