Doctor was using an m5 straight shot drill bit 70° at 30000 rpm during endoscopic surgery.It burned the exterior of the drill bit at the curved area.According to the electronic medical record, the patient suffered an excoriation/thermal injury to the left nostril.It is being treated with topical antibiotic ointment.It is unclear if this was an equipment malfunction.Confirmed with doctor that he was using high-speed bur with m5 handpiece.Follow-up investigation shows this model of bur has a maximum rpm rating of 12,000, but was being used at 30,000.There is no mechanism that prevents the drill from being operated above the maximum rated speed.The only labeling that indicates 12,000 rpm is small and easy to miss.Most of the other burs we stock are rated for 30,000 rpm.Manufacturer response for surgical drill disposable bur, medtronic xomed (per site reporter): pending investigation.
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