INTRAMEDULLARY OSTEOSYNTHESIS DEVICE Russian patent published in 2013 - IPC A61B17/72 A61M27/00 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely traumatology and orthopaedics, aims at treating the fractures complicated by osteomyelitis, soft tissue infection, and preventing the above by drainage intraosseous osteosynthesis. A device comprises a nail with a central canal, a screw thread on an internal lateral surface of a proximal end, and locking screws. The device is provided with a cuff with an internal canal and a plastic tube. The cuff comprises a collar support and a screw thread on an external lateral surface of its proximal end. The nail is perforated along the lateral surface and has a solid tip with a through hole for a distal locking screw, and at least one side cut with a window at the base. The locking screws have a central canal and canals on the lateral surface at 120° to each other. A working end of the proximal locking screw represents a truncated cone with a base of the diameter of 1.4-1.5D, wherein D is a perforation diameter. The central and lateral canals of the distal screw are connected with the window of the side cut of the nail that in turn is coupled with the central canal of the nail. The distal screw is provided in the through hole of the nail tip so that its longitudinal axis is perpendicular to that of the tip.

EFFECT: invention provides more effective surgical management of the open and closed fractures if observing any suppurative complications, and prevention of various forms and stages of osteomyelitis combined with instable bone fragments that is ensured by simultaneous complete stability within the fracture, as well as continuous external drainage of the inflammatory post-operative exudate with a certain degree of discharge and permanent monitoring of all the phases of the regenerative process in the bone throughout the length of the treatment.

2 cl, 9 dwg