Optical visual vertebral arch pedicle puncture system

Abstract

The invention discloses an optical visual vertebral arch pedicle puncture system. The puncture system includes a guide needle channel into which a guide needle can be inserted and a lighting imaging channel for holding a lighting imaging element; and the guide needle channel and the lighting imaging channel are independent of each other. The invention can establish a vertebral arch pedicle channelduring a vertebral arch pedicle screw-setting operation through an optical imaging manner, can avoid cortex breaking of vertebral arch pedicle, and can avoid radiation hazards of X-ray examination and CT navigation adopted by current operations.

Description

technical field [0001] The invention belongs to the field of medical devices, and relates to a medical device used in orthopedic spinal surgery to assist in establishing a pedicle channel, in particular to an optical visualization pedicle puncture system. Background technique [0002] During the surgical treatment of spinal diseases such as thoracolumbar fractures and dislocations, it is necessary to place pedicle instruments (such as pedicle screws) for joint positioning. At present, the application of pedicle instruments combined with bone graft fusion has gradually become the treatment of related orthopedic diseases. gold standard. [0003] The pedicle is the most solid part of the spine and is the effective point of action for surgical manipulation of the spine. However, the pedicles are often adjacent to the spinal cord and nerve roots, especially the inner and lower walls. Any poorly positioned pedicle screws may damage the nerves and cause serious complications. The...

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Problems solved by technology

[0004] The traditional pedicle screw placement technology relies on the identification of anatomical landmarks and the experience of the operator. Even experienced spine surgeons may place the screw in a poor position. With the development of pedicle screw internal fixation technology Development and application, in the process of screw placement, the cases of screw piercing through the pedicle frequently occur

[0005] The technique of free-hand screw placement can easily lead to the puncture of the medial cortex of the pedicle. At present, the techniques to improve the accuracy of screw placement mainly include X-ray fluoroscopy and CT navigation, all of which have radiation hazards, and the equipment is expensive.

Among them, CT navigation can easily lead to the penetration of the lateral cortical bone. If the screw penetrates the pedicle cortex, it will not only reduce the strength of the internal fixation and cause loosening of the internal fixation, but may also damage important tissues such as viscera, spinal cord, and nerve roots, leading to more serious injuries. complication

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