Abstract: A medical device assembly is disclosed. The medical device assembly includes a therapeusis delivery portion and an algometer portion. The therapeusis delivery portion includes a body having a proximal end and a distal end. The algometer portion includes a body having a proximal end and a distal end. The body of the therapeusis delivery portion defines a therapeusis-delivering passage and an algometer-receiving passage. The algometer-receiving passage may be sized to receive a portion of the algometer portion for connecting the algometer portion to the therapeusis delivery portion. A portion of medical device assembly is also disclosed. A method is also disclosed.