Double-groove channel-to-channel connection type percutaneous vertebral pedicle screw nail internal fixation system

Abstract

The present invention relates to a twin-trough channel connecting percutaneous pedicle screw inner fixing system, which comprises a twin-trough channel connecting pedicle screw, a connecting rod and a plug screw. The twin-trough channel connecting pedicle screw comprises a pedicle screw and a double-trough connecting channel. The twin-trough connecting channel is a hollow tube and one side of the tube wall is provided with a whole rabbet; the internal side of two thirds tube wall above the opposite side is provided with a groove and the one third tube wall below is provided with an inverted U-shaped semi-rabbet; when the connecting channel is completely connected with the screw, the two rabbets are superimposed; the connecting channel is connected with the pipe interface of the pedicle screw head through screw threaded covered joint, cutting grafting, clamped joint or a long needle axial fixed connecting structure and is provided with an internal screw thread on the lower one second section inside the channel, which is connected with the internal screw thread of the tube joint of the screw head. The present invention adopts the integrated design of the twin-trough work channel and the screw, thus avoiding multiple replacement of expansion channel, reducing the damages of the approach tissue caused by multiple entering, simplifying the operational machinery and shortening the operation time.

Description

technical field [0001] The invention relates to an internal fixation operation device for spinal surgery, and more specifically, relates to a posterior spinal percutaneous pedicle screw internal fixation system for treating motion segments of spinal lesions. Background technique [0002] At present, the surgical treatment of spinal trauma, degenerative diseases, degenerative diseases and other spinal instability diseases often requires the use of spinal internal fixation devices. The purpose of applying spinal internal fixation devices is to provide strong fixation and strong support to maintain the correction of deformity, ensure the stability of the surgical segment, promote fusion, and allow early mobilization of the patient with minimal or no external fixation support. . [0003] Pedicle screws were conceived in 1944 and used to fix the lumbosacral joint with success until 1959. In 1970, doctors in France and Switzerland began to use pedicle screws clinically. After i...

AI Technical Summary

Problems solved by technology

However, these complicated auxiliary equipment also make the operation expensive and the operation is more complicated, which prolongs the operation time and increases the operation trauma to a certain extent.

At the same time, its working channel can only adapt to one way of connecting rod placement. Although it is suitable for the intraoperative operation of most patients, for patients with special conditions and special intraoperative conditions, this single way of connecting rod placement will increase the surgical operation. difficulty, thus prolonging the operation time and increasing the surgical trauma to a certain extent

Images