Change Shape states the following:
Any gear worn or carried by the creature that can’t be worn or carried in its new form instead falls to the ground in its space. If the creature changes size, any gear it wears or carries that can be worn or carried in its new form changes size to match the new size. (Nonhumanoid-shaped creatures can’t wear armor designed for humanoid-shaped creatures, and viceversa.) Gear returns to normal size if dropped.
Is there any way to prevent the dropping of equipment from happening? (ie, it melds into the body instead. It doesn't matter if the gear continues to function in this new form or not.)
Edit: The change in shape would be from humanoid to something like a wolf or a raven. The new shape would not normally be able to wear the gear in question. (An example might be like vampires "Alternate Form (Su)" ability, or abilities like this)