Surgical head clamp

Claim 1

A surgical head clamp which comprises a first L-shaped main section and a second L-shaped main section, rack teeth on a first arm of the first main section, a pawl carried by a first arm of the second main section, the pawl being engageable with the rack teeth, opposed head engaging means on second arms of the main sections, means for mounting the main sections with the first arms thereof in sliding relation, means for resiliently urging the pawl into engagement with the rack teeth, the teeth restraining movement of the main sections in a direction to separate the second arms and permitting movement of the main sections in a direction to cause approach of the second arms toward each other, means for advancing the head engaging means on one of the second arms when the sections have been advanced to bring the head engaging means into engagement with a head to increase the pressure of the head engaging means on the head and a pair of spaced head engaging pins carried by the head engaging means of the other of said second arms, the means for advancing the head engaging means on said one of the second arms including a threaded pin carrier supporting said last mentioned head engaging means and means on the associated second arm in threaded engagement therewith, the head engaging means on said one of the second arms being directed substantially opposite to and between the head engaging pins of the other of said second arms.