PHYSICAL AND MATHEMATICAL MODELING OF SPINAL NEEDLE DEFORMATION FOR ANESTHESIA

The article presents a theoretical basis for the design of a non-invasive thin spinal needle guide and an analysis of the results of clinical testing of this invention in 297 patients. The use of thin spinal needles in routine practice involves the need for preliminary insertion of a thick introducer needle, which often leads to pain in the form of lumbodynia. At a fundamental scientific level, an original physical and mathematical model has been developed that reliably reflects the factors affecting the resistance of the needle to deforming force when performing a spinal puncture. Based on this model, an alternative non-invasive device has been developed that increases the resistance of the spinal needle to deformation, but is not associated with additional trauma to the ligaments, muscles, periosteum and cartilage of the posterior spine. The invention was patented as a utility model and successfully tested in clinical practice.