A transdermal patch is a sticky bandage whose function is to dispense medication through the skin instead of protecting the wound.
Butterfly closure, also known as butterfly suture, is usually a thin strip of glue that can be used to close small wounds. They pass through the laceration in a way that pulls the skin on both sides of the wound together. They are not true sutures, but can often be used as a supplement or replacement for actual sutures for small wounds. The advantage of butterfly sutures is that they do not require a medical professional to place or remove, so they are a common item in first aid kits.