Design and Prototype

Prototype

Fully assembled prototype from left anterior viewpoint (left) and left posterior viewpoint (right). Hybrid design consists of a rigid front portion with adjustable chin support and vacuum bead, soft posterior portion. The two are interfaced with velcro.

Design Requirements

Generic cervical collar with specific requirements outlined on design

Design Requirements	Justification
A. Must restrict 6 major neck motions	Excessive movement of the cervical spine leads to secondary spinal cord injury. Rotation is especially detrimental and can cause permanent damage to several body systems.
B. Must allow for natural airway and circulatory function.	Major blood and airway supply flows through the cervical region. Any interference with these functions can lead to unconsciousness or brain death within a few minutes.
C. Must be applied in a clinically acceptable time frame	Spinal cord injuries can lead to permanent damage within 6-10 minutes¹. As such, these injuries should be treated and addressed as efficiently as possible.
D. Must allow for additionally emergency procedures to be performed	Cervical collars remain on the patient during additional emergency procedure including: imaging, intubation, etc. Collars should be compatible with these procedures as well to ensure the best possible outcome for the patient.

1. Munjal et al., 2015

Testing

The team conducted verification testing to assess motion limitation for the prototype. Based on the results, shown to the left, the device successfully limited 4 out of 6 of the major neck motions.