NERVE PIPE EXTENSION Russian patent published in 2005 - IPC

FIELD: medicine; traumatic surgery; orthopedics; neuron-surgery.

SUBSTANCE: device can also be used in rehabilitation surgery for curing nerve pipes. Extension has drive mechanism and traction unit, both disposed inside cylindrical case onto vertical axis. Case and cap have cylindrical shape. Drive mechanism is made in form of spring-loaded unit which has crown-shaped ring with beveled teeth and double-teeth pusher with single-sided beveled teeth connected by compression-torsion spring. Drive mechanism is installed of form of horizontal protrusions inside guides onto internal surface of case to provide movement of rest pins along circle onto horizontal arms of which pins it is placed. Under pressure applied to cap of case, reciprocal motion of cap transforms to interrupted rotational motion of coil in cheek of which coil the rest pins are fixed. Coil has flexible link fastened onto hub. Free end of flexible link is drawn outside through the hole in wall of case. Coil and hub compose traction unit being rigidly connected with axis of the extension. Lugs provided with holes are made in bottom of case.

EFFECT: reduced traumatism of surgical operation; better results of cure.

4 dwg