METHOD OF DISTAL BLOCKING OF INTRAMEDULLARY RODS IN OSTEOSYNTHESIS OF LONG TUBULAR BONES AND DEVICE FOR ITS REALISATION Russian patent published in 2010 - IPC A61B17/58 A61B18/22 

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely to low-invasive surgery, traumatology and orthopedics. Method includes carrying out closed reposition of bone fractures of long tubular bone. Into intramedullary canal introduced is intramedullary rod of definite length with longitudinal canal, which crosses lower-located and higher-located holes on its working end. By pulse laser intraosteal burning in tubular bone formed are holes coinciding with lower-located and higher-located holes on working end of intramedullary rod. After that through holes formed in tubular bone blocking screws are introduced. Measuring laser signal at wavelength λ₁ and operating laser signal at wavelength λ₂ are delivered to place of formation of holes in tubular bone by means of preliminarily introduced into longitudinal hole of intramedullary rod light guide, whose distal end is mechanically joined and optically connected to acousto-optic tip and whose inlet aperture is mechanically joined and optically connected to optic outlet of double-frequency transmitting-receiving optic unit. Alternate mechanic and optic co-adjustment of transmitting-receiving aperture of acousto-optic tip with lower-located and higher-located holes of intramedullary rod working end is performed. Concentration of energy of pulse operating laser signal at wavelength λ₂ on set point of internal surface of tubular bone to value sufficient for its laser burning is performed in such way that it becomes phase-conjugated with respect to received signal. In control over process of intraosteal laser hole burning in tubular bone also used are data of analysis of parametres of three-dimensional Fourier-image of area of formed hole, obtained while probing said area with measuring pulse laser signal at wave length λ₁. Into formed holes blocking screws are introduced. Correctness of blocking screws passage through formed holes in tubular bone and spatially matched with it holes of intramedullary rod working end are controlled by means of preliminarily introduced through soft tissue into said holes guide Kirschner's wire. In its turn, control over correctness of Kirschner's wire introduction is performed by means of guiding laser ray at wavelength λ₁, spreading from inside through holes of intramedullary rod working end and corresponding holes formed in tubular bone, as well as soft tissues, directly adjacent to tubular bone in region of distal blocking of intranedullary rod.

EFFECT: invention ensures reduction of amount of intraoperational X-ray examination, minimal invasiveness and reduces operation duration.

2 cl, 4 dwg