21 CFR 3.2(e) defines a Combination Product as one comprised of any combination of the following Constituent Parts:
- Drug and Device
 - Biological Product and Device
 - Drug and Biological Product
 - Drug, Device and Biological Product
 
Some examples of combination products include:
- Pre-filled syringes
 - Insulin injector pens
 - Metered dose inhalers
 - Transdermal patches
 - Drug eluting stents
 - Catheters with antimicrobial coatings
 - Infusion pumps
 - Medicated wound treatments
 - Therapeutic orthopedic implants