Magnetic navigation pedicle screw

Abstract

The invention provides a magnetic navigation pedicle screw. The magnetic navigation pedicle screw comprises a threaded screw rod and a U-shaped screw wall which are integrally formed. An internal thread is formed in the inner wall of the U-shaped screw wall. A through hole along the axis of the threaded screw rod is formed in the threaded screw rod. Magnetic materials are arranged at the upper end and the lower end of the through hole. A partition piece is arranged between the magnetic materials at the upper end and the lower end. A magnetic material is arranged in the threaded screw rod. The magnetic navigation pedicle screw is used in cooperation with a magnetic sensor for positioning and monitoring the screw entering position, angle and depth and other data in surgery, and therefore the problem that traditional surgery relies on experience, hand feeling and the like of doctors is solved, the surgery success rate and surgery quality are increased, and the requirement of minimally invasive surgery is met; in addition, whether screw breakage happens during screw entering in surgery or not can be judged according to the magnetic materials in a screw body, whether the screw body is broken or not and whether abnormal displacement happens between pedicle screws or not can be found in time through the magnetic navigation pedicle screw in cooperation with an in-vitro monitoring device in the postmastectomy relief period, and a patient is helped to go to a doctor in time.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and mainly relates to a magnetic navigation pedicle screw. Background technique [0002] The application of spinal internal fixation technology has a history of several decades. The traditional screw-rod internal fixation system generally consists of pedicle screws, orthopedic rods, connectors, cross-links and lock nuts. Through open spinal surgery, supplemented by a screw-rod internal fixation system to fix and support the spine, correct deformities, and promote bone fusion recovery, so as to treat spinal disorders. [0003] In the screw-rod internal fixation system, the accurate implantation of the pedicle screw during the operation plays a key role in the success of the operation, and the traditional operation relies on the doctor's feel and experience; and the postoperative load of the pedicle screw is too large, and the screw position is improper. Intervertebral disc degeneration c...

AI Technical Summary

Problems solved by technology

[0003] In the screw-rod internal fixation system, the accurate implantation of the pedicle screw during the operation plays a key role in the success of the operation, and the traditional operation relies on the doctor's feel and experience; and the postoperative load of the pedicle screw is too large, and the screw position is improper. Intervertebral disc degeneration causes loss of intervertebral disc height, osteoporosis or insufficient postoperative recovery time and other factors cause excessive displacement or even fracture of pedicle screws in the body, resulting in surgical failure and complications

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