So I looked at the most recent patents achieved by UNS and they provide a hint on some of the developments:
Lisa Auto-injector design
http://pdfpiw.uspto.gov/.piw?PageNu...tract.ASNM.%26OS=AN/Unitract%26RS=AN/Unitract
A target location system:
http://pdfpiw.uspto.gov/.piw?PageNu...tract.ASNM.%26OS=AN/Unitract%26RS=AN/Unitract
This includes this picture (could it be an ear?):
A dose control mechanism
http://pdfpiw.uspto.gov/.piw?PageNu...tract.ASNM.%26OS=AN/Unitract%26RS=AN/Unitract
And a vaccination syringe:
http://pdfpiw.uspto.gov/.piw?PageNu...tract.ASNM.%26OS=AN/Unitract%26RS=AN/Unitract