Relationship between CE mark and ISO 27001?

wheter it is obligatory to be in full compliance with iso 27001 when we wabt to ce mark a Class 2a md which includes collection of data and doctors Reading data on computer
 

Answer:

I am sorry but I am not sure what you mean, but there is no relationship between CE mark and ISO 27001. 
If your question is related to regulations, unless there is a regulation in your country related to the implementation/certification of ISO 27001 (some countries have regulation for the implementation of ISO 27001 in public entities), the compliance with it is not mandatory. 

Here you can see a list of international regulations related to information security and business continuity, maybe can be interesting for you “Laws and regulations on information security and business continuity” : https://advisera.com/27001academy/knowledgebase/laws-regulations-information-security-business-continuity/