Final Design

The final design of the ETSC meets all functional requirements of the project. The ETSC will continue to be made of BioMed Clear resin. The ETSC creates a 90° of the ETT for over 72 hours on all ETT sizes. The inner diameter is 10.7 mm, with a thickness of 1.4 mm. The increased diameter prevents pinching on the larger ETTs. On the proximal end tooth, there is an added appendage of 2.45 mm on the lower portion of the clip and an added appendage of 0.6 mm to the upper portion of the clip. The purpose of these added appendages is to provide substantial surface area for the user to place their fingers to position the clip into place at the pilot balloon of the ETT since the grasping point was removed. The tooth sizes have been increased by 2 mm from the original design, securing the clip onto the ETT better. As the ETSC is attached to the ETT from the distal end to the proximal end, the slant edge provides a larger space for the clip to slip onto the tube, allowing for a smooth attachment of the clip.. The leading edge is a smoothed edge to reduce the possibility of damaging the pilot balloon cord as the clip is progressed along the tube into position at the anchoring point. In the event that the ETSC needs to be extracted, a silk suture is attached through the holes located on the back. A slit was included on the back of the clip in order to provide a place for a radiopaque material to be added. If the ETSC becomes detached within the body and cannot be retrieved by the suture, the radiopaque material is able to be seen on an x-ray machine.