Medical injection device for administering insulin in a dose.

The completeness and installation position of the individual components assembled, and the supporting condition of the spring equipment, must be checked. The intersection is 50 μm to 100 μm, so the level of measurement inaccuracy requirement is low. The measurement time is a relatively secondary factor to the subject under consideration. The insulin pen is key to assessing assembly integrity, so the accuracy of the dosage is directly related to patient safety, and industrial CT can be used to check the internal part placement and spring equipment at once in a non-destructive manner.