FIELD: medical equipment.
SUBSTANCE: invention refers to medical equipment, namely to a transpedicular system for interbody fusion. Transpedicular system for interbody fusion includes an instrument for forming a cavity, an implantation balloon assembly, an internal delivery tube assembly, an external tube assembly. Tool for forming the cavity includes a tubular puncture needle assembly and a flexible drill assembly. Tubular puncture needle assembly comprises a connecting channel and a needle tube. Flexible drill assembly comprises a flexible rod and a drill head. Tubular puncture needle assembly is connected to the front end of the flexible drill assembly through a connecting channel. Implantation balloon assembly includes an implantation balloon, a balloon implantation handle and a guidewire. Implantation balloon has the shape of a dumbbell, and the sealing head with a closed distal end is additionally fixed on the distal end of the implantation balloon. Blind hole with a mouth facing the inside of the implantation balloon is provided at the proximal end of the sealing head. Balloon implantation handle is connected to the proximal end of the implantation balloon. Inner feed tube assembly includes guide, inner tube handle, inner tube slider and inlet. Inner feed tube is rigidly connected to the slider of the inner tube. Slider of the inner tube is connected by a threaded connection to the handle of the inner tube. Handle of the inner tube is rotatable to control the axial movement of the inner feed tube. External tube assembly includes an external tube slider and an external tube handle. External tube is rigidly connected to the slider of the external tube. External tube slider is threadedly connected with external tube handle. External tube handle is rotatable to control axial movement of external tube.
EFFECT: use of the invention allows to push back some physiological tissues of the intervertebral space when forming a cavity and to preserve most of the physiological structures of vertebral bodies.
10 cl, 10 dwg
