Ear clip for medical monitoring device

A clip comprising:

• an upper shell
• and a lower shell, coupled together around
• a hinge pin, the upper and lower shells having
• a pair of jaws on a first side of the hinge pin, and
• handles for squeezing together to separate the jaws on a second side of the hinge pin;
• a biasing spring to oppose the squeezing together of the handles and to urge the jaws together;
• an insert for fitting into a recess in the upper shell, said hinge pin being attached to said insert, said insert comprising a central block with a tapped hole therein, radial arms extending from the central block, and stabilizing wings integrally cast with the central block and radial arms, the stabilizing wings at an angle to the radial arms;
• said stabilizing wings for engaging the upper shell in accurate alignment with the lower shell, wherein the tapped hole is for receiving the adjustment screw such that the tapped hole and adjustment screw enables adjustment of the separation between the jaws of the upper shell and the lower shell when biasing effect of the biasing spring is not opposed by a squeezing pressure on handles.