Patent ID: 8864774
Filing Date: 2014-10-21
Classification: A61B,A61F

Abstract:
1. A system for forming an incision in a tympanic membrane and delivering a pressure equalization tube into the incision, the system comprising: (a) a housing including a handle; (b) an elongate shaft assembly coupled with the housing, the shaft assembly comprising: (c) a cam assembly comprising: (d) a spring biased between the housing and the cam shaft, the spring having a wound position which places a torsional load on the cam shaft, and a released position; and (e) a release member moveably coupled to the cam shaft, the release member having a first position which maintains the spring in the wound position and a second position which allows the spring to move into the released position; wherein the cam profiles are arranged and configured such that, when the release member is moved into the released position, the spring is released to move the cam shaft and cause the cam followers to linearly move respective portions of the shaft assembly to form an incision in a tympanic membrane using the cutting member, dilate the incision using the dilator, and advance the pressure equalization tube out of the shield and into the incision using the pusher.