Patent ID: 7846118

Claim:
A cervical immobilization collar comprising an annular support structure having an extended axial length for limiting cervical compaction of a wearer's neck and a chin rest for limiting cervical rotation of the wearer's neck, a heat extractor carried by the support structure comprising at least one rupturable membrane, the heat extractor being located within the annular support structure so that when the annular support structure is positioned about the wearer's neck for limiting cervical compaction and cervical rotation of the wearer's neck, the heat extractor is positioned in thermal contact with an anterior portion of the wearer's neck, and the heat extractor being connected to the annular support structure so that changing the position of the support structure from a first position to a second position, in association with the installation of the support structure around the wearer's neck, automatically activates the heat extractor by breaking the rupturable membrane in the heat extractor, producing an endothermic reaction within the heat extractor.