I have two projects that I wish to illustrate:
1. A drape that is used for draping an eye and the speculum (retractor) that holds the eyelids open. I want to demonstrate how the drape works by doing an animation of the use of the drape.
2. A device that is a type of retractor of the iris to enlarge a pupil during eye surgery. The placement of the retractor and it's use in an animated illustration is what I require.
I have been involved in designing the above and want to demonstrate the concepts without incurring the expense of producing a prototype. I hope to be able to sell the idea to others.