Shea's aural speculum
This is a non self retaining aural speculum. It does not have a slit in its body. The aural end of the speculum is beveled in order to match the angulation of the ear drum. This speculum straightens the external canal and also holds the cartilaginous portion of the external canal apart enabling the ear drum to be visualized better.
Shea designed this speculum to perform stapedectomy where visualization of the postero superior portion of the tympanic membrane is a mus.