GUIDE TUNNEL FOR INSERTION OF PLATES IN CORRECTION OF PECTUS EXCAVATUM AND METHOD OF APPLICATION THEREOF IN MOBILE FORMS OF DEFORMATION Russian patent published in 2022 - IPC A61B17/56 A61B17/58 

FIELD: medicine.

SUBSTANCE: group of inventions refers to medicine, namely to traumatology and orthopaedics, and can be used for surgical treatment of mobile forms of pectus excavatum (PE). Tunnelling conductor for installation of plates during PE correction contains an elongated body with a bend with length of 350 mm, which is equipped with a threaded hole at the working end. Body of the tunnelling conductor is made of a rectangular plate, the working end of the tunnelling conductor is made in the form of an isosceles triangle with a rounded apex, at length of 40 mm, arched from the plane at angle of 45 degrees. There is a ledge on the shank, in the centre of the ledge there is a threaded hole for a screw, which is coaxial to the hole on the end of the endocorrector plate. Longitudinal incision lines are marked with a felt-tip pen in a projection of an apex of the xiphoid process, and on both sides of the chest, transversely, in area of 4 or 5 intercostal spaces along the midclavicular line in the projection of the apex of the depth of the PE. Endocorrector plate is simulated co-congruent with the physiological configuration of the chest. Incision is made along the lines; an anterior surface of the adjacent ribs of the intercostal space is separated from both sides; the support plates are placed on the ribs perpendicular to their longitudinal axis. Traction is performed by xiphoid process with correction of funnel chest deformation. Guide tunnel is introduced from the left side of the sternum at the PE apex of the intraspinal cord and delivered with its end in the intercostal space on the other side of the sternum, the shank of the tunnelizer-conductor and the end of the modelled endocorrector plate are connected with a screw, and is carried out behind the breastbone until its end exits on the opposite side of the breastbone. Modelled endocorrector plate is disconnected from the guide tunnel. Without stopping the xiphoid process, the curved endocorrector plate is turned through 180 degrees. Endocorrector plate is fixed to the support plates on the ribs with the help of screws. Wounds in intercostal spaces are closed tightly.

EFFECT: group of inventions provides reduction of traumatism of surgical treatment of pectus-shaped deformation of chest with achievement of cosmetic effect for shorter period of fixation with increased efficiency due to elimination of deformation of sternocostal complex without violation of its biomechanical integrity, providing stable fixation in corrected position.

4 cl, 5 dwg, 1 ex