The primary role of the flexor pulley system is to convert linear translation and force in the muscle-tendon into rotation and torque at the finger joints. In finger and hand lacerations the pulleys may destroyed and need to be reconstructed. Reconstruction is performed to a remnant of the destroyed pulley, thru bone holes, or encircling the phalanx; pulleys should not be built at the same time as direct repair, tendon grafting, or tenolysis because early active motion may stretch annular pulley.
In Avisa Medical Innovators of East we designed an artificial pulley which include two parts: titanium chassis and tube body which change the two stage operation of tendon grafting to one stage operation.