Optical myringotomy knife

OBJECTIVE: To describe an improvised optical myringotomy knife essential in creation of an incision in a myringotomy simulator. METHODS: Design: Instrumental Innovation Setting: Tertiary Private Hospital Subject: None RESULTS: The optical myringotomy knife was able to create incisions on mock membranes made up of polyethylene film (Cling Wrap) in a myringotomy simulator. The incisions measured approximately 2mm with sharp edges indicating that the myringotomy knife was able to penetrate the mock membrane with ease. It provided good control in performing myringotomy incisions under endoscopic visualization of the tympanic membrane. CONCLUSION: Our initial experience with this optical myringotomy knife for tympanostomy tube insertion suggests that it may greatly improve the performance of myringotomy especially among less experienced surgeons. Further studies may establish its accuracy and replicability in vitro, after which formal in vivo trials can be attempted. 

A myringotomy and ventilating tube applicator: New look at a five century old procedure

@#<p style="text-align: justify;"><strong>OBJECTIVES:</strong> To fabricate a single instrument that can be used to perform myringotomy and insert a pressure equalizing tube at almost the same time.<br /><br /><strong>METHODS</strong> <br /><strong>Design:</strong> Surgical Instrumentation</p> <p><strong>Setting:</strong> Tertiary Private Hospital</p> <p style="text-align: justify;"><strong>Subject:</strong> A chicken egg membrane was used as a tympanic membrane model<br /><br /><strong>RESULTS:</strong> The fabricated instrument was able to perforate the egg membrane and apply the modified polyethylene pressure equalizing tube in less than one minute without complications.<br /><br /><strong>CONCLUSION:</strong> The prototype applicator can facilitate myringotomy and pressure equalizing (PE) tube insertion at only a fraction of the time it usually takes to do the standard myringotomy and subsequent ventilating tube insertion.</p>