It's not a matter of "not allowed", the medical devices directives were more concerned with reliability than specific solders. 10 years ago the state of lead-fr

It's not a matter of "not allowed", the medical devices directives were more concerned with reliability than specific solders. 10 years ago the state of lead-free solders raised concerns whether they should be used in anything but low risk medical electronics. So the following provision was used: > To avoid conflicts between the RoHS Directive and the medical devices Directives, it is essential to ensure that adequate field data is available to validate the laboratory data from accelerated testing So they keep testing and periodically reevaluate all exemptions from the lead-free directive. The plan was to go full lead-free in every medical device class right about now, or next year.