| 摘要 |
An emergency extrication collar comprising a flexible band for encircling the wearer's neck, and a chin support member which may be readily adjusted in elevation with respect to the band so as to permit adjustment to fit patients having varying neck sizes. The chin support member is connected to the band by means of a post which is slidably connected to a vertical strap on the band, and such that the elevation of the chin support member above the post, and thus the neck size of the collar, may be adjusted by simply sliding the post and chin support upwardly to any selected size between the size extremes. A pawl and ratchet interconnection between the post and strap precludes movement in the opposite direction. The collar is secured in its adjusted size by means of a locking arm which is pivotally mounted on the post, and movement of the locking arm to its release position also releases the pawl and ratchet interconnection.
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